COOL WATER DRAINING SWITCH VALVE AND COMBINATION SHOWER HEAD

Abstract

A cool water draining switch valve includes a valve body, a valve spool and a thermal module disposed in the valve body; the valve body has an inlet passage and a first outlet passage and a second outlet passage respectively connected to the inlet passage; the valve body is further disposed with a cool water draining passage connected to the inlet passage; the first outlet passage is connected to the cool water draining passage by a water draining hole, the second outlet passage is connected to the draining passage in unidirectional way by a check valve; a thermal port of the thermal module detects the water temperature of the draining passage, a retractable port of the thermal module opens or closes the water draining hole; when the valve spool is switched to a cool water draining mode, cool water in the inlet passage is drained to the draining passage.

Claims

1. A cool water draining switch valve, comprising a valve body, a valve spool and a thermal module disposed in the valve body; wherein the valve body is disposed with an inlet passage and a first outlet passage and a second outlet passage respectively connected to the inlet passage; the valve body is further disposed with a cool water draining passage connected to the inlet passage; the first outlet passage is connected to the cool water draining passage by a water draining hole, the second outlet passage is connected to the cool water draining passage in unidirectional way by a check valve; a thermal port of the thermal module detects the water temperature of the cool water draining passage, a retractable port of the thermal module opens or closes the water draining hole; when the valve spool is switched to the cool water draining mode, the first outlet passage and the second outlet passage are disconnected to the inlet passage, cool water in the inlet passage is drained to the cool water draining passage; when water passes by an outlet of the check valve, residual cool water in the second outlet passage is absorbed by an absorb force to the cool water draining passage along the check valve; at the same time, the retractable port of the thermal module is retracted, the water draining hole is open, water drains out of the outlet of the first outlet passage through the water draining hole; when water temperature rises to a preset value, the retractable port of the thermal module extends out to close the water draining hole, the cool water draining is finished; a normal-open non-return valve is disposed at a waterway defined between the second outlet passage and the cool water draining passage; when water flows to the second outlet passage from the inlet passage, the normal-open non-return valve disconnects the connection of the second outlet passage and the cool water draining passage under the action of a reverse water pressure; when water flows from the second outlet passage to the cool water draining passage, the normal-open non-return valve doesn't be influenced by external force and keeps in normal-open state.

2. The cool water draining switch valve according to claim 1, wherein the second outlet passage is disposed with a first outlet connected to the inlet passage and a second outlet connected to an inlet port of the check valve; the normal-open non-return valve is disposed between the first outlet and the second outlet.

3. The cool water draining switch valve according to claim 1, wherein the retractable port of the thermal module is linked to a sealing element, the retractable port drives the sealing element to move along the length direction of the retractable port.

4. The cool water draining switch valve according to claim 3, wherein the thermal module further comprises a reset element, the retractable port and the reset element are respectively disposed at two sides of the water draining hole and are coupled to clamp the sealing element.

5. The cool water draining switch valve according to claim 4, wherein the thermal module further comprises a shaft sleeve base, which is connected to the internal wall of the cool water draining passage in sealing way; the reset element and the sealing element are disposed in the shaft sleeve base.

6. The cool water draining switch valve according to claim 1, wherein the front end of the cool water draining passage is disposed with an accelerating passage, which is connected to the inlet passage; the water flowing area of the central portion of the accelerating passage is smaller than that of the two end portions, an outlet port of the check valve is connected to the rear portion of the accelerating passage.

7. A showerhead assembly, wherein comprising a showerhead, a handheld showerhead and the cool water draining switch valve according to claim 1; the handheld showerhead is connected to the outlet of the first outlet passage, the showerhead is connected to the outlet of the second outlet passage.

8. A showerhead assembly, wherein comprising a showerhead, a handheld showerhead and the cool water draining switch valve according to claim 2; the handheld showerhead is connected to the outlet of the first outlet passage, the showerhead is connected to the outlet of the second outlet passage.

9. A showerhead assembly, wherein comprising a showerhead, a handheld showerhead and the cool water draining switch valve according to claim 3; the handheld showerhead is connected to the outlet of the first outlet passage, the showerhead is connected to the outlet of the second outlet passage.

10. A showerhead assembly, wherein comprising a showerhead, a handheld showerhead and the cool water draining switch valve according to claim 4; the handheld showerhead is connected to the outlet of the first outlet passage, the showerhead is connected to the outlet of the second outlet passage.

11. A showerhead assembly, wherein comprising a showerhead, a handheld showerhead and the cool water draining switch valve according to claim 5; the handheld showerhead is connected to the outlet of the first outlet passage, the showerhead is connected to the outlet of the second outlet passage.

12. A showerhead assembly, wherein comprising a showerhead, a handheld showerhead and the cool water draining switch valve according to claim 6; the handheld showerhead is connected to the outlet of the first outlet passage, the showerhead is connected to the outlet of the second outlet passage.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1 illustrates a sectional diagram of a cool water draining switch valve with waterway in cool water draining mode of Embodiment 1 of the present invention.

[0024] FIG. 2 illustrates a sectional diagram of the cool water draining switch valve with waterway after cool water draining of Embodiment 1 of the present invention.

[0025] FIG. 3 illustrates a sectional diagram of the cool water draining switch valve switched to the first outlet passage of Embodiment 1 of the present invention.

[0026] FIG. 4 illustrates a sectional diagram of the cool water draining switch valve switched to mixing water outlet of Embodiment 1 of the present invention.

[0027] FIG. 5 illustrates a sectional diagram of the cool water draining switch valve switched to the second outlet passage of Embodiment 1 of the present invention.

[0028] FIG. 6 illustrates a sectional diagram of a thermal module of Embodiment 1 of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The present invention will be further described with the drawings and the embodiments.

Embodiment 1

[0030] Referring to FIGS. 1-6, a cool water draining switch valve, comprising a valve body 1, a valve spool 2 and a thermal module 3 disposed in the valve body 1;

[0031] the valve body 1 is disposed with an inlet passage 11 and a first outlet passage 12 and a second outlet passage 13 respectively connected to the inlet passage 11; the valve body 1 is further disposed with a cool water draining passage 14 connected to the inlet passage 11; the first outlet passage 12 is connected to the cool water draining passage 14 by a water draining hole 121, the second outlet passage 13 is connected to the cool water draining passage 14 in unidirectional way by a check valve 131; a thermal port of the thermal module 3 detects the water temperature of the cool water draining passage 14, a retractable port of the thermal module 3 opens or closes the water draining hole 121;

[0032] the valve spool 2 comprises a cool water draining mode, a first outlet waterway and a second outlet waterway.

[0033] When the valve spool 2 is switched to the cool water draining mode, the first outlet passage 12 and the second outlet passage 13 are disconnected to the inlet passage 11, cool water in the inlet passage 11 is drained to the cool water draining passage 14; when water passes by the outlet of the check valve 131, an absorb force is generated to absorb the residual cool water in the second outlet passage 13 to the cool water draining passage along the check valve 131; at the same time, the retractable port of the thermal module 3 is retracted, the water draining hole is open, water drains out of the outlet 122 of the first outlet passage 12 through the water draining hole; when water temperature rises to a preset value, the retractable port of the thermal module 3 extends out to close the water draining hole 121, the cool water draining is finished.

[0034] Therefore, the present invention realizes the inlet passage 11, the first outlet passage 12 and the second outlet passage 13 drain cool water outlet at the same time. When the cool water drains out and hot water flows out of the inlet passage 11, the water temperature rises to the preset value, the retractable port of the thermal module extends out to close the water draining hole 121, the cool water draining is finished, avoiding waste of water. At the same time, it avoids human being to test the water temperature, user can use hot water to get shower after the cool water is drained out without influenced by cool water. In addition, with the check valve 131, water in the cool water draining passage 14 would not flow reversely to the second outlet passage 13.

[0035] A normal-open non-return valve 132 is disposed at a waterway defined between the second outlet passage 13 and the cool water draining passage 14; the normal-open non-return valve 132 is normal-open if there is no external force, that is to say, the second outlet passage 13 keeps connected to the cool water draining passage 14. when the valve spool 2 is switched to the cool water draining passage, residual water in the second outlet passage 13 can flow to the cool water draining passage 14 freely; when the valve spool 2 is switched to the second outlet passage 13 to outlet water, water flows to the second outlet passage 13 from the inlet passage 11, the normal-open non-return valve 132 disconnects the connection of the second outlet passage 13 and the cool water draining passage 14 under the action of a reverse water pressure.

[0036] Therefore, when the valve spool 2 is switched to the second outlet passage 13 to outlet water, water doesn't flow to the cool water draining passage 14 due to the non-return valve 132, thus ensuring the stability of the whole switch valve.

[0037] In a detailed structure: the second outlet passage 13 is disposed with a first outlet 133 connected to the inlet passage 11 and a second outlet 134 connected to an inlet port of the check valve 131; the normal-open non-return valve 132 is disposed between the first outlet 133 and the second outlet 134. With this configuration, when the normal-open non-return valve 132 is open, the second outlet passage 13 is connected to the cool water draining passage by the second outlet 134; when the normal-open non-return valve 132 is closed, the second outlet passage 13 is connected to the inlet passage 11 by the first outlet 133.

[0038] The retractable port of the thermal module 3 is linked to a sealing element 31, the retractable port drives the sealing element 31 to move along the length direction of the retractable port. When the retractable port of the thermal module 3 extends out, the sealing element 31 closes the water draining hole 121.

[0039] The thermal module 3 further comprises a reset element 32, the retractable port and the reset element 32 are respectively disposed at two sides of the water draining hole 121 and are coupled to clamp the sealing element 31. When the retractable port extends out, the reset element 32 is compressed, when the retractable port is retracted, the resilience force of the reset element 32 drives the sealing element 31 to reset to open the water draining hole 121.

[0040] The thermal module 3 further comprises a shaft sleeve base 33, which is connected to the internal wall of the cool water draining passage 14 in sealing way; the reset element 32 and the sealing element 31 are disposed in the shaft sleeve base 33.

[0041] The front end of the cool water draining passage 14 is disposed with an accelerating passage 141, which is connected to the inlet passage 11; the water flowing area of the central portion of the accelerating passage 141 is smaller than that of the two end portions, an outlet port of the check valve 131 is connected to the rear portion of the accelerating passage 141. Therefore, the water flowing through the accelerating passage is accelerated, improving the Venturi effect. when water passes by the outlet of the check valve 131, an absorb force is generated to absorb the residual cool water in the second outlet passage 13 to the cool water draining passage along the check valve 131

Embodiment 2

[0042] This embodiment is provided with a showerhead assembly, which comprises a showerhead, a handheld showerhead and the cool water draining switch valve according to Embodiment 1;

[0043] the handheld showerhead is connected to the outlet of the first outlet passage, the showerhead is connected to the outlet of the second outlet passage.

[0044] Although the present invention has been described with reference to the preferred embodiments thereof for carrying out the patent for invention, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the patent for invention which is intended to be defined by the appended claims.