COMPRESSOR AND REFRIGERATION DEVICE
20220112897 · 2022-04-14
Assignee
Inventors
Cpc classification
F25B31/026
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04B39/0284
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04C29/02
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04C29/005
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04C29/028
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04C2240/805
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04C2240/50
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04B39/023
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04C23/008
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04C2240/809
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
International classification
F04C29/02
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
A compressor and a refrigeration device are provided. The compressor has a shell, a compression assembly, a motor, an oil sump and an oil return channel. The shell defines a cavity. A part of the compression assembly is connected to the shell and located in the cavity. The cavity is divided into a first cavity and a second cavity by the compression assembly. A part of the motor is arranged in the first cavity. A part of the shell located below the central axis of the motor is a first shell. The oil sump is arranged in the second cavity. The oil return channel is arranged in the compression assembly, and is provided with an oil inlet facing the first cavity.
Claims
1. A compressor comprising: a shell defining a cavity; a compression assembly, wherein a part of the compression assembly is fixedly connected to the shell and located in the cavity, and the cavity is divided into a first cavity and a second cavity by the compression assembly; a motor, wherein a part of the motor is arranged in the first cavity, and wherein a part of the shell located below a central axis of the motor is a first shell; an oil sump being arranged in the second cavity; and an oil return channel, being arranged in the compression assembly and configured to communicate the first cavity with the second cavity, wherein: the oil return channel is provided with an oil inlet facing the first cavity, and the oil inlet has a dividing line parallel to a horizontal plane where the central axis of the motor is located, a distance between the dividing line and an inner-side wall of the first shell is a first relative distance, the first relative distance is greater than 0 mm and less than or equal to 12% of an inner diameter of the shell.
2. The compressor according to claim 1, wherein: the oil inlet comprises an oil through area which is located at one side the dividing line departing from the central axis of the motor, and an area of the oil through area is greater than or equal to 90% of an area of the oil inlet and less than or equal to the area of the oil inlet.
3. The compressor according to claim 2, wherein the first relative distance is greater than 0 mm and less than or equal to 10 mm.
4. The compressor according to claim 1, wherein the first relative distance is greater than 0 mm and less than or equal to 7 mm.
5. The compressor according to claim 1, wherein: the oil inlet has an apex away from a horizontal plane where the central axis of the motor is located, a distance between the apex and the inner-side wall of the first shell is a second relative distance, and the second relative distance is greater than or equal to 0 mm and less than or equal to 3 mm.
6. The compressor according to claim 5, wherein a part of the compression assembly is concaved towards a direction close to the central axis of the motor, so as to form the oil return channel.
7. The compressor according to claim 1, wherein the motor comprises: a crankshaft, wherein a first end of the crankshaft is located in the first cavity, and a second end of the crankshaft is connected to the compression assembly; a rotor, sleeved on the first end of the crankshaft; and a stator, sleeved on an outer-side wall of the rotor, wherein an interval is formed between at least a part of an outer-side wall of the stator and the inner-side wall of the shell, wherein, a sectional area of the interval on a cross section of the crankshaft is a first sectional area, a sectional area of the oil return channel on a cross section of the crankshaft is a second sectional area, and the second sectional area is less than or equal to 30% of the first sectional area.
8. The compressor according to claim 7, wherein: the number of the intervals is at least two, and the first sectional area is a sum of the sectional areas of the at least two intervals, the number of the oil return channels is at least two, and the second sectional area is a sum of the sectional areas of the at least two oil return channels.
9. The compressor according to claim 1, wherein the compression assembly comprises: an air cylinder; and a main bearing, provided at a side of the air cylinder facing the motor, wherein a part of the motor penetrates the main bearing and connects the air cylinder, wherein one of the main bearing and the air cylinder, which is fixedly connected to the shell, is a fastener, and the oil return channel is provided on the fastener.
10. The compressor according to claim 1, further comprising: an exhaust pipe provided on the shell corresponding to the compression assembly; and an airflow channel provided on the compression assembly, wherein the airflow channel, the first cavity and the exhaust pipe are communicated with one another.
11. The compressor according to claim 1, further comprising: a base; and a mounting rack, connected to a side of the base facing the shell, wherein the mounting rack is adapted and connected to the shell.
12. A refrigeration device comprising: a housing comprising a mounting cavity; and a compressor according to claim 1, wherein the compressor is connected to the housing and located in the mounting cavity.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0037] The above and/or additional aspects and advantages of the present disclosure will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:
[0038]
[0039]
[0040]
[0041]
[0042]
[0043]
[0044]
[0045]
[0046]
[0047]
[0048] The description of the reference numerals shown in
[0049] 1 compressor, 10 shell, 101 first shell, 11 cavity, 111 first cavity, 112 second cavity, 12 compression assembly, 121 air cylinder, 122 main bearing, 13 motor, 131 crankshaft, 132 rotor, 133 stator, 134 interval, 14 oil sump, 15 oil return channel, 151 oil inlet, 16 exhaust pipe, 17 airflow channel, 18 base, 19 mounting rack.
DETAILED DESCRIPTION OF EMBODIMENTS
[0050] In order that the above objects, features, and advantages of the present disclosure may be more clearly understood, the present disclosure will be described in further detail with reference to the accompanying drawings and preferred embodiments. It should be noted that the embodiments and features in the embodiments of the present disclosure may be combined with one another without conflict.
[0051] In the following description, many specific details are set forth in order to fully understand the present disclosure. However, the present disclosure can also be implemented in other ways different from those described herein. Therefore, the scope of the present disclosure is not limited by specific embodiments disclosed below.
[0052] A compressor 1 and a refrigeration device according to some embodiments of the present disclosure are described below with reference to
[0053] According to an exemplary embodiment of the present disclosure, a compressor 1 is provided. As shown in
[0054] The compressor 1 provided by the present disclosure comprises a shell 10, a compression assembly 12, a motor 13, an oil sump 14 and an oil return channel 15. The shell 10 is a sealed shell 10, and a part of the compression assembly 12 is fixedly connected to the shell 10. For example, a part of the compression assembly 12 can be fixedly connected to the shell 10 through a welding method, thereby ensuring a reliable connecting performance between the compression assembly 12 and the shell 10. The compression assembly 12 is arranged in the cavity 11 and divides the cavity 11 into a first cavity 111 and a second cavity 112. The first cavity 111 is located at the left side of the compression assembly 12, and the second cavity 112 is located at the right side of the compression assembly 12. A part of the motor 13 is located in the first cavity 111, the oil sump 14 is disposed in the second cavity 112, and a lubricating oil is stored in the oil sump 14. When the compressor 1 works, the compression assembly 12 can compress a refrigerant, and a portion of compressed refrigerant air can be exhausted through an exhaust structure provided on the shell 10, and the other portion of the compressed refrigerant air can enter the first cavity 111 and cool the motor 13, and subsequently, the refrigerant can enter the second cavity 112 and is exhausted through the exhaust structure. According to the present disclosure, through disposing the oil return channel 15 in the compression assembly 12, the lubricating oil in the oil sump 14 can communicate through the oil return channel 15. When the refrigerant enters the first cavity 111, the pressure in the first cavity 111 rises, and under the effect of the pressure, the lubricating oil in the first cavity 111 can enter the second cavity 112 through the oil return channel 15. This embodiment has a simple and reasonable structure and can improve the recovery efficiency of the lubricating oil, so that the fluctuation of the oil level in the oil sump 14 is relatively stable, and the oil circulation ratio of the compressor 1 is further lowered, so that the oil sump 14 can provide a sufficient volume of oil for the compressor 1, thereby further improving the reliability and the energy efficiency grade of the compressor 1. Regardless of the working conditions of the compressor 1, the oil in the cavity of the motor 13 can return to the oil cavity through the oil return channel 15 in the compression assembly 12, the oil supply from the oil sump 14 to the compression assembly is ensured, and the reliability of the oil stored in the oil cavity is ensured. Therefore, the oil circulation ratio is decreased, and the performance of the compressor 1 is improved.
[0055] In addition, the lubricating oil in the oil return channel 15 can also enter the interior of the compression assembly 12 to lubricate the compression assembly 12, and thus the operation of the compressor 1 can be offered more lubrication. For example, the compressor 1 can be a horizontal compressor.
[0056] Further, as shown in
[0057] As shown in
[0058] For example, as shown in
[0059] Referring to
[0060] When the first relative distance H1 and the inner diameter of the shell 10 satisfy the abovementioned relation, it is difficult to expose the oil inlet 151 of the oil return channel 15 in the refrigerant, and this can effectively improve the ventilation condition in the oil sump 14, and subsequently lower the oil circulation ratio of the compressor. Further, the area of the oil through area is greater than or equal to 90% of the area of the oil inlet 151 and less than or equal to the area of the oil inlet 151, and this can further ensure that the lubricating oil flows from the oil inlet 151 to the oil sump 14.
[0061] When the area of the oil through area is equal to the area of the oil inlet 151, the dividing line is located at the highest point of the oil inlet 151 (the highest point refers to the highest point in the oil inlet 151 close to the horizontal plane where the central axis of the motor 13 is located). When the area of the oil through area is less than the area of the oil inlet 151 and greater than or equal to 90% of the area of the oil inlet 151, the dividing line can divide the oil inlet 151 into two areas. One is an oil through area located on the side of the dividing line departing from the central axis of the motor, and the lubricating oil can enter the oil sump 14 through the oil through area.
[0062] It should be explained that, when the dividing line is not located above the first shell 101, the distance between the dividing line and the inner-side wall of the first shell 101 is the distance between the dividing line and the plane where the inner-side wall of the first shell 101 is located.
[0063] For example, the oil return channel 15 is located under the horizontal plane where the central axis of the motor 13 is located, the lubricating oil is deposited on the bottom of the cavity 11 under the effect of gravity, and the oil return channel 15 located in the bottom can help the flow of the lubricating oil.
[0064] Further, the oil return channel 15 presents a flaring shape in the direction of the central axis of the motor 13, and subsequently, the area of the oil outlet is greater than the area of the oil inlet 151. For example, the oil return channel 15 can also have equivalent cross sections in the direction of the central axis of the motor 13, and a good oil circulation rate can be achieved as long as the distance between the oil inlet 151 of the oil return channel 15 and the first shell 101 satisfies the abovementioned relation.
[0065] Further, the first relative distance is greater than 0 mm and less than or equal to 7 mm.
[0066] In the embodiment, the highest point of the oil inlet 151 in the oil return channel 15 can be further lowered if the first relative distance H1 satisfies 0 mm<H1≤7 mm, so that it is more difficult to expose the oil inlet 151 in the refrigerant, thereby effectively improving the ventilation condition of the oil sump 14, and further reducing the oil circulation ratio.
[0067] Further, as shown in
[0068] In the embodiment, as shown in
[0069] Further, a part of the compression assembly 12 is concaved towards a direction close to the central axis of the motor 13, so as to form the oil return channel 15.
[0070] In the embodiment, a part of the compression assembly 12 is concaved towards a direction close to the central axis of the motor 13, so as to form the oil return channel 15, i.e., the oil return channel 15 has an oil inlet 151 and an oil outlet along the axis of the motor 13. Meanwhile, the oil return channel 15 also has an opening facing the shell 10, and subsequently, since the part of the compression assembly 12 which is provided with the oil return channel 15 is fixedly connected to the shell 10, the second relative distance H2 between the apex on the oil inlet 151 and the inner-side wall of the first shell 101 is 0 mm. Further, a projection of the oil return channel 15 on the cross section of the crankshaft 131 of the motor 13 is in a circular shape, a triangular shape or a polygonal shape.
[0071] According to another exemplary embodiment, the motor 13 comprises a crankshaft 131, a rotor 132 and a stator 133. A first end of the crankshaft 131 is located in the first cavity 111, and a second end of the crankshaft 131 is connected to the compression assembly 12. The rotor 132 is sleeved on the first end of the crankshaft 131, the stator 133 is sleeved on an outer-side wall of the rotor 132, and an interval 134 is formed between at least a part of an outer-side wall of the stator 133 and the inner-side wall of the shell 10. A sectional area of the interval 134 on a cross section of the crankshaft 131 is a first sectional area, a sectional area of the oil return channel 15 on a cross section of the crankshaft 131 is a second sectional area, and the second sectional area is less than or equal to 30% of the first sectional area.
[0072] In the embodiment, as shown in
[0073] Further, the number of the intervals 134 is at least two, and the first sectional area is a sum of the sectional areas of the at least two intervals 134, the number of the oil return channels 15 is at least two, and the second sectional area is a sum of the sectional areas of the at least two oil return channels 15.
[0074] In the embodiment, the number of the intervals 134 is multiple, and the first sectional area is a sum of the sectional areas of a plurality of intervals 134, the number of the oil return channels 15 is multiple, and the second sectional area is a sum of the sectional areas of a plurality of oil return channels 15. If the sum of the sectional areas of the multiple intervals 134 and the sum of the sectional areas of the multiple oil return channels 15 satisfy the above relation, it can be ensured that the lubricating oil can circulate smoothly in the first cavity 111, the oil return channel 15 and the second cavity 112.
[0075] According to another exemplary embodiment of the present disclosure, the compression assembly 12 comprises an air cylinder 121 and a main bearing 122. The main bearing 122 is provided at a side of the air cylinder 121 facing the motor 13, and a part of the motor 13 penetrates the main bearing 122 and connects the air cylinder 121. One of the main bearing 122 and the air cylinder 121, which is fixedly connected to the shell 10, is a fastener, and the oil return channel 15 is provided on the fastener.
[0076] In the embodiment, the compression assembly 12 comprises an air cylinder 121 and a main bearing 122. The main bearing 122 is provided at a side of the air cylinder 121 facing the motor 13, the second end of the crankshaft 131 penetrates the main bearing 122 and connects the air cylinder 121. The main bearing 122 can be fixedly connected to the inner-side wall of the shell 10 through welding, and the air cylinder 121 can also be fixedly connected to the inner-side wall of the shell 10 through welding, and the fixed connection between the main bearing 122 or the cylinder 121 and the shell 10 can be selected according to actual assembling needs. If the main bearing 122 is welded to the shell 10, the air cylinder 121 is not fixedly connected to the shell 10, and at this moment, the oil return channel 15 is disposed on the main bearing 122, the lubricating oil will enter into the oil return channel 15 from the first cavity 111 through the oil inlet 151, and flow to the oil sump 14 through the gap between the air cylinder 121 and the shell 10. On the contrary, if the air cylinder 121 is fixedly connected to the shell 10, the lubricating oil can enter the oil return channel 15 from the first cavity 111 through the gap between the main bearing 122 and the shell 10, and subsequently enter the oil sump 14.
[0077] Further, the compressor 1 further comprises an exhaust pipe 16 and an airflow channel 17. The exhaust pipe 16 is provided on the shell 10 corresponding to the compression assembly 12, the airflow channel 17 is provided on the compression assembly 12, and the airflow channel 17, the first cavity 111 and the exhaust pipe 16 are communicated with each other.
[0078] In the embodiment, when the compressor 1 works, the compression assembly 12 can pressurize the refrigerant, a portion of the compressed refrigerant air can be exhausted directly through the exhaust pipe 16, the other portion of the compressed refrigerant air can enter the first cavity 111 through the airflow channel 17 and cool the motor 13, and subsequently, the refrigerant can enter the second cavity 112 and is exhausted through the exhaust pipe 16.
[0079] Further, the compressor 1 further comprises a base 18 and a mounting rack 19, and the mounting rack 19 is connected to a side of the base 18 facing the shell 10, and the mounting rack 19 is adapted and connected to the shell 10.
[0080] In the embodiment, the base 18 can be parallel to the crankshaft 131, i.e., the shell 10 is disposed on the base 18 horizontally. The base 18 can also be disposed at a certain angle with the crankshaft 131, i.e., the shell 10 is tilted on the base 18. When the shell 10 is disposed on the base 18, the central axis of the motor 10 has a horizontal plane where it is located. When the shell 10 is tilted on the base 18, the central axis is at a certain angle with respect to the horizontal plane, and subsequently, the base 18 can be tilted fixedly on the horizontal bottom, so that the central axis (crankshaft 131) of the motor 13 is parallel to the horizontal plane, and subsequently the position relation between the oil inlet 151 in the compression assembly 12 of the compressor 1 and the first shell 101 should also satisfy the above relation.
[0081] According to another exemplary embodiment of the present disclosure, a refrigeration device is provided, and the refrigeration device comprises a compressor 1 provided according to any one of the above embodiments.
[0082] The refrigeration device provided by the present disclosure comprises the compressor 1 provided according to any one of the above embodiments, and thus has all the beneficial effects of the compressor, which will not be repeated herein.
[0083] Further, the refrigeration device further comprises a housing, a mounting cavity is formed in the housing, the compressor 1 is connected to the housing and located in the mounting cavity, and the compressor 1, through the protection of the housing, will not be affected by external environment, thereby ensuring the accurate operation of the compressor 1.
[0084] Further, the refrigeration device can be home appliance devices, such as, a refrigerator and an air conditioner.
[0085] In the present disclosure, the term “a plurality of” refers to two or more, unless explicitly defined otherwise. The terms such as “installation”, “connected”, “connecting”, “fixation” and the like shall be understood in broad sense, and for example, “connecting” may be a fixed connection, a detachable connection, or an integral connection; “connected” may be directly connected, or indirectly connected through an intermediary. The specific meaning of the above terms in the present disclosure will be understood by those of ordinary skills in the art, as the case may be.
[0086] In the illustration of the description, the illustration of the terms of “one embodiment”, “some embodiments”, “specific embodiment”, etc. means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present disclosure. In this description, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0087] The foregoing is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. that made within the spirit and principle of the present disclosure are intended to be included within the scope of the present disclosure.