WATER TANK MOUNTING STRUCTURE FOR VENTILATION TREATMENT APPARATUS AND VENTILATION TREATMENT APPARATUS
20240123179 ยท 2024-04-18
Assignee
Inventors
- Yunjing CHEN (Tianjin, CN)
- Zhi ZHUANG (Beijing, CN)
- Qingsong WANG (Beijing, CN)
- Fang ZHENG (Tianjin, CN)
- Jian Xu (Beijing, CN)
Cpc classification
A61M16/1005
HUMAN NECESSITIES
A61M16/024
HUMAN NECESSITIES
A61M2206/14
HUMAN NECESSITIES
International classification
Abstract
A water tank mounting structure and a ventilation treatment apparatus is provided. The water tank mounting structure comprises a cavity for containing a water tank, a back wall for defining the cavity, at least one side wall for defining the cavity, and a guiding assembly for guiding the water tank to assemble to the cavity. The back wall is provided with at least one opening for transmitting a respiratory gas between a main unit of the ventilation treatment apparatus and the water tank. The guiding assembly is set such that when the water tank is assembled into the cavity, at least one gas port of the water tank is aligned to the at least one opening of the back wall. The guiding assembly includes at least one first guiding component provided on the back wall and a second guiding component provided on the at least one side wall.
Claims
1. A water tank mounting structure for a ventilation treatment apparatus, comprising: a cavity for containing a water tank; a back wall for defining the cavity; at least one side wall for defining the cavity; and a guiding assembly for guiding the water tank to assemble to the cavity; wherein: the back wall is provided with at least one opening for transmitting a respiratory gas between a main unit of the ventilation treatment apparatus and the water tank; the guiding assembly is set such that when the water tank is assembled into the cavity, at least one gas port of the water tank is aligned to the at least one opening of the back wall; and the guiding assembly includes at least one first guiding component provided on the back wall and a second guiding component provided on the at least one side wall.
2. The water tank mounting structure of claim 1, further comprising: a positioning structure for positioning the water tank in its assembling position.
3. The water tank mounting structure of claim 2, wherein the positioning structure is provided on the at least one first guiding component.
4. The water tank mounting structure of claim 1, wherein each of the at least one first guiding component is provided with one or more positioning posts, and one or more depressed structures are provided on a first sliding part of the water tank.
5. The water tank mounting structure of claim 1, wherein each of the at least one first guiding component includes two parallel guiding plates.
6. The water tank mounting structure of claim 5, wherein the first sliding part of the water tank includes two surfaces facing the two parallel guiding plates respectively.
7. The water tank mounting structure of claim 6, wherein each one of the two parallel guiding plates is provided with a positioning post; and at least one of the two surfaces of the first sliding part of the water tank is provided with a depressed structure corresponding to the positioning post provided on a corresponding guiding plate.
8. The water tank mounting structure of claim 7, wherein the two parallel guiding plates are spaced from each other in a direction perpendicular to an assembling direction of the water tank.
9. The water tank mounting structure of claim 8, wherein a spacing between the two parallel guiding plates is set to allow the first sliding part of the water tank to enter.
10. The water tank mounting structure of claim 9, wherein the two parallel guiding plates are set horizontally; and the first sliding part of the water tank protrudes from an outer surface of the water tank and extend horizontally.
11. The water tank mounting structure of claim 1, wherein each of the at least one first guiding component is provided with one or more depressed structures, and one or more positioning posts are provided on a first sliding part of the water tank.
12. The water tank mounting structure of claim 1, wherein the second guiding component includes two guide rails arranged on two opposite side walls of the at least one side wall respectively.
13. The water tank mounting structure of claim 12, wherein each of the two guide rails is configured to be matched with a second sliding part provided on the water tank such that the water tank is capable of sliding along the two guide rails.
14. The water tank mounting structure of claim 13, wherein the each of the two guide rails includes two guiding ribs that protrude from an inner surface of one of the at least one side wall and extend in an assembling direction of the water tank.
15. The water tank mounting structure of claim 14, wherein the two guiding ribs have an interval in a height direction of the one of the at least one side wall; and the interval is set to allow the second sliding part of the water tank to enter.
16. The water tank mounting structure of claim 13, wherein the each of the two guide rails includes a groove that inwardly concave from an inner surface of one of the at least one side wall and extend in an assembling direction of the water tank.
17. The water tank mounting structure of claim 16, wherein the second sliding part of the water tank protrudes from an outer surface of the water tank and extend in the assembling direction; and a height of the groove is set to allow the second sliding part of the water tank to enter.
18. The water tank mounting structure of claim 13, wherein the each of the two guide rails includes a first segment and a second segment; the first segment and the second segment are arranged along an assembling direction of the water tank; and a height or an interval of the first segment in a height direction of one of the at least one side wall is larger than a height or an interval of the second segment in a height direction of the one of the at least one side wall.
19. The water tank mounting structure of claim 1, wherein the at least one gas port of the water tank includes a gas inlet and a gas outlet; the at least one opening of the back wall includes a first opening corresponding to the gas inlet of the water tank and a second opening corresponding to the gas outlet of the water tank; the first opening is configured to transmit, through the gas inlet of the water tank, the respiratory gas into the water tank for humidifying the respiratory gas; and the second opening is configured to transmit a humidified respiratory gas from the gas outlet of the water tank back into the main unit of the ventilation treatment apparatus.
20. A ventilation treatment apparatus comprising: a water tank; and a main unit, the main unit including a water tank mounting structure for mounting the water tank, the water tank mounting structure including a cavity for containing a water tank, a back wall for defining the cavity, at least one side wall for defining the cavity, and a guiding assembly for guiding the water tank to assemble to the cavity; wherein: the back wall is provided with at least one opening for transmitting a respiratory gas between a main unit of the ventilation treatment apparatus and the water tank; the guiding assembly is set such that when the water tank is assembled into the cavity, at least one gas port of the water tank is aligned to the at least one opening of the back wall; and the guiding assembly includes at least one first guiding component provided on the back wall and a second guiding component provided on the at least one side wall.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0043] The accompanying drawings are provided here to facilitate further understanding on the present invention, and constitute a part of this document. They are used in conjunction with the following embodiments to explain the present invention, but shall not be comprehended as constituting any limitation to the present invention. In the figures:
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REFERENCE NUMBERS
[0089] 10main unit; 11cavity; 12back wall; 121opening; 122limiting rib; 13inner top wall; 131guiding plate; 132guiding bevel; 133flange; 134LED lamp; 135wiring groove; 14inner side wall; 141guide rail; 142mounting slot; 143first gas hole; 15bottom wall; 16intake tube; 17sealing element; 18heating tube connector; 20water tank; 21main body; 211annular convex edge; 212first interface; 213second interface; 22adapter; 221horizontal tube; 222gas inlet; 223groove; 224vertical tube; 225third interface; 226fourth interface; 227gas outlet; 228check valve; 23water injection tube; 30 casing; 31outer top wall; 311notch; 32outer side wall; 321second gas hole; 33bottom plate; 331stop rib; 34base; 341supporting column; 342spring; 35heating plate; 36front cover; 410casing; 4101top wall; 4102bottom wall; 4103back wall; 4104left side wall; 4105right side wall; 4106panel; 4107second fitting surface; 411upper partition; 4111bottom plate; 4112upper side plate; 412lower partition; 4121lower side plate; 413oxygen isolation chamber; 4131mounting hole; 414fan chamber; 415power supply chamber; 416main board mounting chamber; 417ventilating fan; 418humidifying cavity; 420oxygen assembly; 421oxygen connector; 422oxygen proportioning valve; 423first tube; 424second tube; 425oxygen pressure sensor; 426bracket; 430fan assembly; 431fan housing; 4311gas inlet; 4312gas outlet; 4313communicating port; 4314oxygen inlet; 4315mixed gas outlet; 4316upper fan housing; 4317lower fan housing; 432oxygen mixing compartment; 4321baffle; 4322first measuring component; 4323second measuring component; 433first fan compartment; 434second fan compartment; 435first fan; 4351positioning ring; 4352main body of fan; 4353supporting component; 436second fan; 437connecting tube; 440main board; 4401main board screen; 4402control key; 441acrylic plate; 4411knob mounting hole; 4412button mounting hole; 442light guiding base; 4421claw; 4422positioning post; 4423first fitting surface; 443seal ring; 444knob; 445button; 446silicone button pad; 4461upper fitting surface; 4462middle fitting surface; 4463lower fitting surface; 4464groove.
DETAILED DESCRIPTION
[0090] Hereunder some embodiments of the present invention will be detailed with reference to the accompanying drawings. It should be understood that the embodiments described herein are only provided to describe and explain the present invention rather than constitute any limitation to the present invention.
[0091] Unless otherwise specified in the present invention, the terms that denotes the directions or orientations, such as top, bottom, front, back, left, right, etc., usually refer to the directions or orientations as indicated in
[0092] In ventilation treatment apparatuses, the humidifying device usually includes a heating assembly capable of heating the water in the water tank. However, in the existing humidifying devices, the cavity is an airtight structure, the gas temperature in the cavity will be increased as the heating assembly carries out heating continuously, and the hot gas in the cavity can't be vented; moreover, since the side wall for defining the cavity is a single-layer structure, the foreign substances or water in the external environment may enter into the cavity easily and affect the use of the ventilation treatment apparatus if gas holes are arranged in the side wall simply.
[0093] To solve the above problems, the present invention provides a water tank mounting structure for a ventilation treatment apparatus, comprising a cavity 11 for containing a water tank 20 and a side wall for defining the cavity 11, wherein the side wall comprises an inner side wall 14 and an outer side wall 32 spaced apart from each other, a first gas hole 143 is provided in the inner side wall 14, a second gas hole 321 is provided in the outer side wall 32, and the first gas hole 143 and the second gas hole 321 are arranged in a staggered manner in a direction perpendicular to the side wall (see the left-right direction in
[0094] Compared with the prior art, in the water tank mounting structure in the present invention, the side wall for defining the cavity 11 is configured into a two-layer structure (i.e., including an inner side wall 14 and an outer side wall 32), and a first gas hole 143 and a second gas hole 321 are arranged in the inner side wall 14 and the outer side wall 32 respectively, so that the hot gas in the cavity 11 can be effectively vented through the first gas hole 143 and the second gas hole 321; besides, by arranging the first gas hole 143 and the second gas hole 321 in a staggered manner, when external water enters through the second gas hole 321, the water flows downwards along the side wall without invading into the cavity 11, thus a waterproof effect is achieved.
[0095] It should be noted: in the present invention, the side wall mentioned above should be the side wall located outside, such as the right side wall of the ventilation treatment apparatus shown in
[0096] In order to enhance the gas permeability of the cavity 11, the inner side wall 14 may be provided with a plurality of first gas holes 143, and the outer side wall 32 may be provided with a plurality of second gas holes 321. The plurality of first gas holes 143 and the plurality of second gas holes 321 may be arranged in any way. For example, as shown in
[0097] In the present invention, the cavity 11 may be in different shapes, depending on the shape and structure of the ventilation treatment apparatus and the shape of the water tank 20; furthermore, the side wall for defining the cavity 11 may be arranged in different ways. The inner side wall 14 and the outer side wall 32 may have the same extension direction or different extension directions, as long as there is spacing between them. According to an embodiment of the present invention, as shown in
[0098] During use, when external water enters into the spacing between the inner side wall 14 and the outer side wall 32 from the second gas hole 321, the water can't directly enter into the cavity 11 through the first gas hole 143 because the first gas hole 143 and the second gas hole 321 are staggered from each other; instead, the water will flow downward to the bottom of the side wall under the blocking action of the inner side wall 14 opposite to the second gas hole 321. Furthermore, to drain off the water flowing to the bottom of the side wall timely, the water tank mounting structure in the present invention may further comprise a guide channel arranged on the bottom of the side wall for guiding out the water between the outer side wall 32 and the inner side wall 14.
[0099] There is no particular restriction on the specific structure of the guide channel in the present invention. According to an embodiment of the present invention, as shown in
[0100] It should be noted: when the water flows into the guide channel, the bottom plate 33 and the drain port shall cooperate with each other to guide the water to the drain port so that the water is drained. For example, the bottom plate 33 may be disposed obliquely (see
[0101] In addition, in the present invention, the water tank mounting structure further includes a top wall for defining the cavity 11, the top wall preferably comprises an inner top wall 13 and an outer top wall 31 that are spaced apart from each other (see
[0102] Moreover, as shown in
[0103] As shown in
[0104] There is no guiding structure for guiding the assembling of the water tank in existing humidifying devices. Consequently, the assembling efficiency of the water tank is low, and the intake tube for ventilation to the water tank of the ventilation treatment apparatus may be misaligned to the gas inlet of the water tank easily, resulting in gas leakage. To solve the above problems, according to an embodiment of the present invention, as shown in
[0105] It can be understood that usually the respiratory gas should be charged into the water tank 20 through the gas inlet 222 of the water tank 20 via the intake tube 16, and the respiratory gas is humidified in the water tank 20 and then delivered to the user during the use of the ventilation treatment apparatus. In the present invention, by providing the guiding assembly, the gas inlet 222 of the water tank 20 can be aligned to the opening 121 where the intake tube 16 is mounted while the water tank 20 is guided to assemble to the cavity 11, so as to facilitate the mounting of the water tank 20 of the water tank mounting structure and prevent gas leakage resulted from the misalignment of the gas inlet 222 from the opening 121.
[0106] It should be noted that the cavity 11 may be shaped to match the shape of the water tank 20, and the cavity 11 has an opening for mounting and removing the water tank 20.
[0107] To make the technical scheme of the present invention understood more clearly, the present invention provides a specific water tank structure. Here the guiding assembly will be described in detail with reference to the specific water tank structure. It should be understood that the specific structures of the water tank and the guiding assembly in the present invention are not limited to the structures described here.
[0108] For example, as shown in
[0109] In addition, as shown in
[0110] Of course, in order to further ensure the airtightness between the intake tube 16 and the horizontal tube 221, a sealing element 17 may be provided at the joint between the intake tube 16 and the horizontal tube 221. In the case that the connection between the intake tube 16 and the horizontal tube 221 is made by inserting the intake tube 16 into the horizontal tube 221, the sealing element 17 may be a seal ring sleeved on the intake tube 16, as shown in
[0111] Based on the above water tank structure, the guiding assembly may comprise a first guiding component to be fitted with the horizontal tube 221 to guide the assembling of the water tank 20 and/or a second guiding component to be fitted with the main body 21 to guide the assembling of the water tank 20. Preferably, the guiding assembly comprises a first guiding component and a second guiding component, so that the top part and the bottom part of the water tank 20 are fitted with the first guiding component and the second guiding component respectively to guide the assembling of the water tank 20; thus, the smoothness of movement of the water tank 20 can be improved, and the guiding effect on the water tank 20 can be improved as well, so that the assembling of the water tank 20 is more reliable.
[0112] According to an embodiment of the present invention, as shown in
[0113] To facilitate the horizontal tube 221 to enter into the spacing between the two guiding plates 131 smoothly during the assembling, a guiding bevel 132 may be formed on the end of each guiding plate 131 away from the opening 121, as shown in
[0114] In another embodiment of the water tank mounting structure in the present invention, the water tank mounting structure may further comprise a positioning structure for positioning the water tank 20 in its assembling position. It can be understood that the assembling position refers to the position where the water tank 20 is mounted correctly in the cavity 11. By arranging the positioning structure, the reliability of mounting of the water tank 20 can be improved, and gas leakage caused by the swaying of the water tank 20 in the cavity 11 or the loosening of other connecting components can be avoided.
[0115] The positioning structure may be implemented in different ways, and there is no particular restriction on the specific implementation of the positioning structure in the present invention. For example, the positioning structure may be positioning posts and positioning holes that are arranged on the cavity 11 and the water tank 20 and fitted with each other. To make the water tank mounting structure simpler, reduce the manufacturing cost and ensure effective positioning of the water tank 20, according to a preferred embodiment of the present invention, the positioning structure comprises a flange 133 provided on one of the inner side of the guiding plate 131 and the outer wall of the horizontal tube 221, and a groove 223 provided on the other of the inner side of the guiding plate 131 and the outer wall of the horizontal tube 221 to be fitted with the flange 133. During the assembling, when a click sound is heard as the horizontal tube 221 is moved along the guiding plate 131, it indicates that the flange 133 is embedded in the groove 223 and the water tank 20 is mounted in the correct position. Thus, it is seen that the position of the flange 133 must correspond to the position of the groove 223 so that the flange 133 is embedded in the groove 223 when the water tank 20 reaches its assembling position.
[0116] Furthermore, as shown in
[0117] In the present invention, for the second guiding component, according to an embodiment of the present invention, the water tank mounting structure comprises two side walls arranged opposite to each other for defining the cavity 11, the second guiding component may comprise two guide rails 141 arranged on the two side walls respectively (see
[0118] Furthermore, the cross section of the main body 21 may be circular, the sliding part may be an annular convex edge 211 protruding outward from the outer circumferential surface of the main body 21 and extending in the circumferential direction of the main body 21, the guide rails 141 comprise two guiding ribs that protrude from the inner surface of the side wall and extend in the assembling direction, and are spaced apart from each other in the height direction of the side wall, and the annular convex edge 211 can enter into the spacing between the two guiding ribs (see
[0119] During the assembling of the water tank 20, the horizontal tube 221 enters into the spacing between the two guiding plates 131 and the two sides of the annular convex edge 211 enter into the two guide rails 141 respectively as the water tank 20 enters into the cavity 11 through the opening of the cavity 11; under the guidance of the guiding plates 131 and the guide rails 141, the gas inlet 222 of the water tank 20 is aligned and gradually approaches to the opening 121; when a click sound is heard, it indicates that the flange 133 is embedded in the groove 223 and the water tank 20 reaches its assembling position and is fixed in the assembling position.
[0120] Preferably, the spacing between the two guide rails 141 is decreased in the assembling direction to prevent the main body 21 to move further in the assembling direction after it reaches the assembling position. The decreasing may be gradual decreasing, or may be in the form as shown in
[0121] The water tank mounting structure in the present invention is applicable to any type of ventilation treatment apparatus. For example, the water tank mounting structure may be applied in a ventilation treatment apparatus in which the main unit and the humidifying device are separate components; in such a ventilation treatment apparatus, the water tank mounting structure is arranged on the humidifying device; alternatively, the water tank mounting structure may be applied in a ventilation treatment apparatus in which the main unit and the humidifying device are formed integrally, such as the ventilation treatment apparatus shown in
[0122] Specifically, as shown in
[0123] As shown in
[0124] As shown in
[0125] Moreover, to facilitate water injection from an external water source into the water tank 20 at any time, as shown in
[0126] At present, many ventilation treatment apparatus available on the market, such as oxygen therapeutic instruments or high-flow oxygen therapeutic instruments, have no separate oxygen isolation space. Once leakage occurs at the seal of the tube for oxygen supply, the oxygen will diffuse into the entire main unit without any obstruction. Since electronic components (e.g., circuit boards) are usually arranged in the main unit, the risk that the electronic components become ignition sources will be increased in folds and even a fire disaster may occur in the oxygen-enriched environment. In order to solve the above problems, the present invention provides a ventilation treatment apparatus, which may comprise a casing 410 and an oxygen assembly 420, wherein a main unit cavity is defined in the casing 410, and a partition assembly is arranged in the main unit cavity and separates an airtight oxygen isolation chamber 413 in the main unit cavity, and the oxygen assembly 420 is mounted in the oxygen isolation chamber 413.
[0127] In the present invention, by arranging a partition assembly in the main unit cavity to separate an oxygen isolation chamber 413 and mounting the oxygen assembly 420 (i.e., components related with oxygen, such as oxygen supply tube, and oxygen proportioning valve for regulating the oxygen flow, etc.) in the oxygen isolation chamber 413, the oxygen assembly 420 is isolated from the electronic components in the main unit, such as circuit boards, etc. Thus, once the oxygen leaks, it will not diffuse into other areas of the main unit cavity immediately; instead, the oxygen will be enclosed in the separate oxygen isolation chamber 413, thereby the reliability and safety of the ventilation treatment apparatus are improved.
[0128] It is well-known that the main unit cavity of an existing ventilation treatment apparatus (e.g., respirator) usually is further provided with a fan for providing respiratory gas and a power supply adapter for supplying power, etc. In order to simplify the main unit cavity structure and reduce the manufacturing cost of the ventilation treatment apparatus while separating the oxygen isolation chamber 413 in the main unit cavity, the partition assembly may be arranged in the main unit cavity in a way that a fan chamber 414 and a power supply chamber 415 are separated in the main unit cavity. That is to say, the partition assembly can divide the main unit cavity into an oxygen isolation chamber 413, a fan chamber 414 and a power supply chamber 415, thus the arrangement of the components in the main unit cavity is neat and modular, and thereby the layout rationality and space utilization of the main unit cavity are improved.
[0129] Specifically, according to an embodiment of the present invention, as shown in
[0130] Furthermore, as shown in
[0131] Furthermore, as shown in
[0132] In addition, according to an embodiment of the present invention, as shown in
[0133] Moreover, as shown in
[0134] Since a ventilation treatment apparatus usually further comprises a main board 440 for control, the main unit cavity may further comprise a main board mounting chamber 416. According to an embodiment of the present invention, as shown in
[0135] As shown in
[0136] In order to improve the leak-tightness between the main board and the panel 4106 and prevent adverse effects on the use of the ventilation treatment apparatus resulted from invasion of external water or dust into the clearance between the main board and the panel 4106, the following embodiments may be used: (1) the sealing between the main board screen 4401 and the panel 4106 may be implemented by means of a screen bracket (e.g., a frame arranged around the main board screen 4401) made of silicone, the screen bracket can achieve positioning of the main board screen 4401 and wrap the main board screen 4401 to attain a sealing and dustproof effect against the clearance between the main board screen 4401 and the panel 4106; (2) as shown in
[0137] As for the dustproofing and waterproofing between the knobs 444, the buttons 445 and the panel 4106, as shown in
[0138] In the present invention, the ventilation treatment apparatus may further comprise a fan assembly 430 mounted in the fan chamber 414. The fan assembly 430 may comprise a fan housing 431 and a fan, wherein an oxygen mixing compartment 432 and a fan compartment for mounting the fan are defined in the fan housing 431, the fan housing 431 is provided with a gas inlet 4311 (it should be understood that a main gas inlet communicating with the gas inlet 4311 is arranged on the casing 410) communicating with the fan compartment and a gas outlet 4312 communicating the fan compartment and the oxygen mixing compartment 432, and an oxygen inlet 4314 and a mixed gas outlet 4315 that communicate with the oxygen mixing compartment 432. It can be understood that the gas inlet of the fan corresponds to the gas inlet 4311 of the fan compartment, and the gas outlet of the fan corresponds to the gas outlet of the fan compartment. With the above arrangement, during use, outside gas enters into the fan through the gas inlet 4311, then is discharged into the oxygen mixing compartment 432 through the gas outlet 4312, is mixed with the oxygen introduced into the oxygen mixing compartment 432 through the oxygen inlet 4314, and then the mixed gas flows out through the mixed gas outlet 4315. The discharged mixed gas can be directly conveyed to the end user, or may be conveyed to the humidifying device for warming and humidification before it is conveyed to the end user.
[0139] By arranging the oxygen mixing compartment 432 downstream of the gas outlet 4312 of the fan compartment, the oxygen will not pass through the motor of the fan; thus, the motor doesn't operate in an oxygen-enriched environment, thereby a fire risk is decreased.
[0140] Specifically, for example, in an embodiment shown in
[0141] In the present invention, as shown in
[0142] Moreover, in an embodiment of the present invention, as shown in
[0143] In the present invention, as shown in
[0144] In the present invention, the oxygen assembly 420 refers to a component related with oxygen. According to an embodiment of the present invention, as shown in
[0145] The oxygen assembly 420 may further comprise an oxygen pressure sensor 425, which is used to measure the pressure in the first tube 423, i.e., measure the pressure of the high-pressure oxygen connected into the ventilation treatment apparatus. Thus, by detecting the pressure of the oxygen entering into the ventilation treatment apparatus, accidental oxygen interruption can be detected and an alarm can be provided. Moreover, by measuring the pressure of the oxygen, compensation may be made when the oxygen concentration of the mixed gas is calculated.
[0146] In addition, as shown in
[0147] In the present invention, as shown in
[0148] While some preferred embodiments of the present invention are described above with reference to the accompanying drawings, the present invention is not limited to the details in those embodiments. Those skilled in the art can make modifications and variations to the technical scheme of the present invention, without departing from the spirit of the present invention. However, all these modifications and variations shall be deemed as falling into the scope of protection of the present invention.
[0149] In addition, it should be noted that the specific technical features described in above embodiments may be combined in any appropriate form, provided that there is no conflict. To avoid unnecessary repetition, the possible combinations are not described specifically in the present invention.
[0150] Moreover, different embodiments of the present invention may also be combined freely as required, as long as the combinations don't deviate from the ideal and spirit of the present invention. However, such combinations shall also be deemed as falling into the scope disclosed in the present invention.