CN203614816U - Water temperature selection switch valve - Google Patents

Abstract

The utility model discloses a water temperature selection switch valve, which comprises a fixed part, a temperature sensing element, a transmission part and a pilot valve. The temperature-sensing element can expand or contract under the influence of temperature change, it is located in the first assembly cavity, and the first water inlet corresponds to the temperature-sensing element. The transmission part is movably installed in the pilot passage and the transmission is connected to the temperature sensing element and moves between the sealing position and the open position. When the transmission part is in the sealing position, the pilot passage is not connected to the lower cavity. When the transmission part is in the open position, the pilot passage It is connected with the lower cavity and the drain hole; the pilot valve can control the first water inlet to switch to the first water outlet channel and the second water outlet channel under the action of the water pressure in the pilot channel, and it is installed in the second assembly cavity. The user does not need to test the water temperature by hand, but only needs to open the water inlet valve, and soon the water flowing out from the shower will be hot water, and the cold water will flow out from the first water outlet channel, which is extremely convenient to use.

Description

A water temperature selection switch valve

technical field

The utility model relates to a water temperature selection switch valve.

Background technique

In the current showers, there is generally a hot water output pipeline connected between the hot water input port and the warm water output port. The hot water in this part of the pipeline will remain in the pipeline. If it is not used for a long time, the heat will be easily lost. For cold water, especially in winter or in colder northern regions. When taking a shower, in order to obtain a comfortable water temperature, the hot water switch is usually turned on first, and the cold water is drained, and while the water is released, the temperature of the water is sensed by hand until it feels comfortable, which is extremely inconvenient to operate.

Utility model content

The utility model provides a water temperature selection switch valve, which overcomes the existing shortcomings of the background technology. The technical solution adopted by the utility model to solve the technical problem is: a water temperature selection switch valve, which is characterized in that it includes:

The fixed part, which is provided with the first water inlet (110), the first water outlet channel (120), the second water outlet channel (130), the drainage hole (140), the first assembly cavity (150), and the first assembly cavity (150) of the second assembly cavity (160) and the pilot channel (170) connected to the second assembly cavity (160), the first water inlet (110) connected to the first assembly cavity (150), the first assembly cavity ( 150) includes an upper chamber (152) and a lower chamber (153) that are not connected to each other;

A temperature sensing element (200) capable of expanding or contracting due to temperature changes, which is located in the first assembly cavity (150), and the first water inlet (110) corresponds to the temperature sensing element (200);

The transmission part (300), which is movably connected in the pilot channel (170) and is connected to the temperature sensing element (200) and moves between the sealing position and the open position. When the transmission part (300) is in the sealing position, the pilot channel (170 ) is not connected with the lower chamber (153), and the pilot channel (170) is connected with the lower chamber (153) and the drainage hole (140) when the transmission member (300) is in the open position;

Under the action of water pressure in the pilot channel (170), the pilot valve that can control the first water inlet (110) to switch through the first water outlet channel (120) and the second water outlet channel (130) is installed in the second assembly chamber (160).

In a preferred embodiment: it also includes a sliding seat (151) that is movably mounted in the first assembly cavity (150), the temperature sensing element (200) is mounted in the sliding seat (151), and the temperature sensing element (200 ) cooperates with the sliding seat (151) to separate the first assembly cavity (150) into an upper cavity (152) and a lower cavity (153) that are not connected to each other, and the drain hole (140) is connected to the lower cavity ( 153), the pilot channel (170) is connected with the lower cavity (153) when the transmission member (300) is in the open position.

In a preferred embodiment: a first elastic member (154) is also included, and the first elastic member resists between the sliding seat (151) and the cavity wall of the first assembly cavity (150).

In a preferred embodiment: the cavity wall of the second assembly cavity (160) is provided with a first through hole (161) connected to the first assembly cavity (150), and the pilot valve includes:

A valve body (410), which is provided with a second water inlet (411), a first water outlet (412) and a second water outlet (413), the second water inlet (411) is connected to the first through hole (161), The first water outlet (412) is connected to the first water outlet channel (120), and the second water outlet (413) is connected to the second water outlet channel (130);

The pilot spool is movably connected in the valve body (410), and it is provided with a thin hole (421) connected with the second water inlet (411), forming a gap between it and the valve body (410) and the fixed part. A pressure control chamber (422), the pilot channel (170) and the fine hole (421) are connected to the pressure control chamber (422);

The transmission part (300) moves to control the water pressure in the pressure control chamber (422) and then drives the pilot spool to move to selectively seal the first water outlet (412) and the second water outlet (413) so that the second water inlet (411 ) to switch and connect the first water outlet channel (120) and the second water outlet channel (130).

In a preferred embodiment: the first water outlet (412) and the second water outlet (413) are arranged at intervals up and down, the second water inlet (411) is located between the two water outlets, and the pilot valve core slides up and down Installed on the valve body (410).

In a preferred embodiment: the pilot spool includes a first valve shaft (420) and a first sealing protruding ring (423) capable of sealing the first water outlet (412) and the second water outlet (413) and The second sealing protruding ring (424), the two sealing protruding rings are fixedly connected to the first valve shaft (420) and arranged at intervals along the length direction of the first valve shaft (420), the space between the two sealing protruding rings corresponds to the second water inlet (411), the thin hole (421) runs through the second sealing protruding ring (424), and the pressure control chamber (422) is formed between the second sealing protruding ring (424), the valve body (410) and the fixed part.

In a preferred embodiment: the fixed part includes a water distribution pipe (500), and the water distribution pipe (500) is provided with a third water inlet (510), a third water outlet channel (520) and a fourth water outlet channel (530) In addition, there is a reversing valve (560) that can switch the third water inlet (510) to connect the third water outlet channel (520) and the fourth water outlet channel (530) under the action of water pressure. Inside the water pipe (500).

In a preferred embodiment: the reversing valve (560) includes a valve seat (540) installed in the water distribution pipe (500) and a reversing valve core movably installed in the valve seat (540), the valve The seat (540) is provided with a large water outlet hole (541) and a small water outlet hole (542), and the reversing valve core includes a second valve shaft (550) and a large sealing ring (551) which can respectively seal the large and small water outlet holes (541, 542). ) and small sealing convex rings (552), the large and small sealing rings are fixedly connected to the second valve shaft (550) and arranged at intervals along the length direction of the second valve shaft (550), the space between the large and small sealing rings corresponds to the third water inlet ( 510).

In a preferred embodiment: it also includes a temperature adjustment mechanism, which includes a fixed seat (600) fixed in the first assembly cavity (150), a shaft sleeve (610) installed in the fixed seat (600), An adjustment shaft (620) movably connected with the shaft sleeve (610) and an adjustment knob (630) that can rotate relative to the fixed part, the adjustment shaft (620) is transmission-connected to the adjustment knob (630) and the temperature sensing element (200).

Compared with the background technology, this technical solution has the following advantages:

1. Its working principle is: if the water entering the first assembly cavity from the first water inlet is water below the set temperature, the temperature sensing element remains in the initial state without expansion, and the water flows from the first assembly cavity through the second assembly cavity and The water flowing out from the first water outlet channel is cold water; and the transmission part is not driven by the temperature sensing element and kept in a sealed position, that is, the pilot channel is not connected to the first assembly chamber, and the water pressure inside and outside the pressure control chamber remains constant. Change so that the first sealing protruding ring of the pilot spool keeps opening the first water outlet, the second sealing protruding ring seals the second water outlet, and the water cannot be discharged from the second water outlet channel;

If the water temperature has reached the preset temperature value, the thermal expansion of the temperature sensing element will drive the transmission part to move downward so that the transmission part will move from the sealing position to the open position. At this time, the pilot channel is connected with the cavity under the first assembly cavity, The water in the pilot channel flows through the lower chamber and flows out from the drain hole. Since the aperture of the pilot channel is larger than that of the fine hole, the water entering the pilot channel from the fine hole is much smaller than the water flowing out of the pilot channel, and the pressure control chamber produces pressure reduction. Small, negative pressure is generated, the downward pressure on the pilot spool is greater than the upward pressure, so that the pilot spool moves downward, the first sealing convex ring seals the first water outlet, the second sealing convex ring opens the second Water outlet, water flows through the second water outlet and is discharged from the second water outlet channel, at this time, the water discharged from the second water outlet channel is hot water with a preset temperature. The second water outlet channel can be connected to showers such as showers.

The user does not need to test the water temperature by hand, but only needs to open the water inlet valve, and soon the water flowing out from the shower will be hot water, and the cold water will flow out from the first water outlet channel, which is extremely convenient to use.

2. There is also a reversing valve. If the water flowing out from the second water outlet is small, such as residual water, the pressure is too small to drive the large sealing ring of the reversing valve core to leave the large water outlet. At this time, the small sealing ring opens Small water outlet, the residual water flows out from the fourth water outlet channel; if the water flow out of the second water outlet is large, such as normal discharge, the pressure is relatively high, and the water pressure can drive the large sealing ring to leave the large water outlet, and the large water outlet is blocked. Open, the small water outlet hole is sealed by the small sealing ring, and the water flows out from the third water outlet channel, further ensuring that the outflowing water is hot water with a preset temperature.

3. There is also a temperature adjustment mechanism, so that the preset temperature value can be adjusted according to the user's needs. If a higher temperature is required, just rotate the adjustment knob to drive the adjustment shaft to move upward, and the temperature sensing element also moves upward, and the temperature sensing element expands The volume needs to be larger to drive the movement of the transmission parts; if a lower temperature is required, just turn the adjustment knob to drive the temperature sensing element to move down, which is easy to adjust.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

FIG. 1 shows an overall schematic diagram of a water temperature selection switch valve in a preferred embodiment.

Fig. 2 is a perspective exploded schematic diagram of a water temperature selectable on-off valve of a preferred embodiment.

Fig. 3 is a schematic diagram showing a water outlet state of a first water outlet channel of a water temperature selection switch valve according to a preferred embodiment.

Fig. 4 is a schematic diagram showing a water outlet state of a fourth water outlet channel of a water temperature selection switch valve according to a preferred embodiment.

Fig. 5 shows a partial cross-sectional schematic diagram of a water temperature selection switch valve in a preferred embodiment.

Fig. 6 is a schematic diagram showing a water outlet state of the second water outlet channel of a water temperature selection switch valve according to a preferred embodiment.

Fig. 7 is a schematic diagram showing the water outlet state of the third water outlet channel of a water temperature selection switch valve according to a preferred embodiment.

Detailed ways

Please refer to FIG. 1 to FIG. 7 , a preferred embodiment of a water temperature selectable on-off valve. The water temperature selectable on-off valve includes a fixed part, a temperature sensing element 200, a transmission member 300 and a pilot valve.

The fixed part is provided with a first water inlet 110, a first water outlet channel 120, a second water outlet channel 130, a drain hole 140, a first assembly cavity 150, a second assembly cavity 160 connected to the first assembly cavity 150 and The pilot passage 170 of the second assembly cavity 160 is connected, and the first water inlet 110 is connected to the first assembly cavity 150 .

In this embodiment, the cavity wall of the first assembly cavity 150 is provided with a second through hole 155 , and the cavity wall of the second assembly cavity 160 is provided with a first through hole 161 connected to the second through hole 155 .

In this embodiment, the fixed part includes an upper body 180 and a lower body 190 connected to the upper body, and the first assembly cavity 150, the second assembly cavity 160, the first water inlet 110, and the first water outlet channel 120 are all set in The upper body 180 , the second water outlet channel 130 and the pilot channel 170 are all arranged on the lower body 190 .

The temperature sensing element 200 can expand or contract under the influence of temperature change, it is located in the first assembly cavity 150 , and the first water inlet 110 corresponds to the temperature sensing element 200 .

In this embodiment, the switch valve also includes a sliding seat 151 movably mounted in the first assembly cavity 150, the temperature sensing element 200 is mounted in the sliding seat 151, and the temperature sensing element 200 cooperates with the sliding seat 151 to make the first assembly The cavity 150 is divided into an upper cavity 152 and a lower cavity 153 which are not connected to each other. The drainage hole 140 is always connected to the lower cavity 153 .

In this embodiment, the on-off valve further includes a first elastic member 154 , and the first elastic member resists between the sliding seat 151 and the cavity wall of the first assembly cavity 150 .

The transmission member 300 is movably connected in the pilot passage 170 and is connected to the temperature sensing element 200 and moves between the sealing position and the open position. When the transmission member 300 is in the sealing position, the pilot passage 170 is not connected to the first assembly cavity 150 connected, when the transmission member 300 is in the open position, the pilot channel 170 is connected to the first assembly chamber 150 and the drain hole 140 . In this embodiment, a third elastic member 310 is further included, which is pressed against between the fixed part and the transmission member 300 .

The pilot valve can control the first water inlet 110 to switch on the first water outlet channel 120 and the second water outlet channel 130 under the action of water pressure in the pilot channel 170 , and it is installed in the second assembly cavity 160 .

In this embodiment, the pilot valve includes a valve body 410 and a pilot valve core.

The valve body 410 is provided with a second water inlet 411, a first water outlet 412 and a second water outlet 413, the second water inlet 411 is connected to the first through hole 161, and the first water outlet 412 is connected to the first water outlet In the channel 120 , the second water outlet 413 is connected to the second water outlet channel 130 .

In this embodiment, the first water outlet 412 and the second water outlet 413 are arranged at intervals up and down, and the second water inlet 411 is located between the two water outlets.

The pilot spool is slid up and down in the valve body 410, and it is provided with a small hole 421 connected to the second water inlet 411, and a pressure control chamber 422 is formed between it, the valve body 410 and the fixed part. , the pilot channel 170 and the fine hole 421 are both connected to the pressure control cavity 422 .

The transmission member 300 moves to control the water pressure in the pressure control chamber 422 and then drives the pilot valve core to move to selectively seal the first water outlet 412 and the second water outlet 413 so that the second water inlet 411 is switched to connect the first water outlet channel 120 and the second water outlet 413. The second water outlet channel 130 .

In this embodiment, the pilot spool includes a first valve shaft 420, a first sealing protruding ring 423 and a second sealing protruding ring 424 capable of sealing the first water outlet 412 and the second water outlet 413 respectively, and the two sealing protruding rings Fixed on the first valve shaft 420 and arranged at intervals along the length direction of the first valve shaft 420, the space between the two sealing protrusions corresponds to the second water inlet 411, the thin hole 421 runs through the second sealing protrusion 424, the second sealing protrusion The pressure control cavity 422 is formed between the ring 424 and the valve body 410 and the fixed part.

In this embodiment, the pilot valve further includes a second elastic member 430 , which abuts between the fixed part and the second sealing protruding ring 424 .

In this embodiment, the fixed part includes a water distribution pipe 500. The water distribution pipe 500 is provided with a third water inlet 510, a third water outlet channel 520 and a fourth water outlet channel 530. The three water inlets 510 switch and connect the reversing valve 560 of the third water outlet channel 520 and the fourth water outlet channel 530 , which is installed in the water distribution pipe 500 .

In this embodiment, the reversing valve 560 includes a valve seat 540 installed in the water distribution pipe 500 and a reversing valve core movably installed in the valve seat 540. The valve seat 540 is provided with a large water outlet hole 541 and a small water outlet. hole 542, the reversing valve core includes a second valve shaft 550 and a large sealing ring 551 and a small sealing convex ring 552 that can respectively seal the large and small water outlet holes 541, 542, and the large and small sealing rings are fixed on the second valve shaft 550 and along the second The valve shafts 550 are arranged at intervals in the length direction, and the space between the large and small sealing rings corresponds to the third water inlet 510 .

In this embodiment, the reversing valve 560 further includes a fourth elastic member 570, which resists between the valve seat 540 and the reversing valve core. Equipped with a reversing valve, if the water flowing out from the second water outlet is small, such as residual water, the pressure is low, and the large sealing ring of the reversing valve core cannot be driven to leave the large water outlet hole. At this time, the small sealing ring opens the small water outlet hole , the residual water flows out from the fourth water outlet channel; if the water flow out from the second water outlet is relatively large, as in normal discharge, the pressure is relatively high, and the water pressure can drive the large sealing ring to leave the large water outlet hole, the large water outlet hole is opened, and the small water outlet hole is opened. The water outlet hole is sealed by a small sealing ring, and the water flow flows out from the third water outlet channel, further ensuring that the water flowing out is hot water with a preset temperature.

In this embodiment, the on-off valve also includes a temperature adjustment mechanism, which includes a fixed seat 600 fixed in the first assembly cavity 150, a shaft sleeve 610 mounted in the fixed seat 600, and a regulating valve movably connected with the shaft sleeve 610. The shaft 620 and the adjustment knob 630 that can rotate relative to the fixed part, the adjustment shaft 620 is drivingly connected with the adjustment knob 630 and the temperature sensing element 200 . There is also a temperature adjustment mechanism, so that the preset temperature value can be adjusted according to the user's needs. If a higher temperature is required, just rotate the adjustment knob to drive the adjustment shaft to move upward, and the temperature sensing element also moves upward, and the volume of the temperature sensing element expands. It needs to be larger to drive the movement of the transmission parts; if a lower temperature is required, just rotate the adjustment knob to drive the temperature sensing element to move down, which is convenient to adjust.

The working principle of the switch valve is: if the water entering the first assembly cavity 150 from the first water inlet 110 is water below the set temperature, the temperature sensing element 200 remains in the initial state without expansion, and the water flows through the first assembly cavity 150 The second assembly cavity 160 flows out from the first water outlet channel 120, and the water is cold water; and the transmission member 300 is kept in a sealed position without being driven by the temperature sensing element 200, that is, the pilot channel 170 is not connected to the first assembly cavity 150. connected, the internal and external water pressure of the pressure control chamber 422 remains unchanged, so that the first sealing protruding ring 423 of the pilot valve core keeps opening the first water outlet 412, and the second sealing protruding ring 424 seals the second water outlet 413, so that water cannot flow from The second water outlet channel 130 is discharged;

If the water temperature has reached the preset temperature value, the thermal expansion of the temperature sensing element 200 drives the transmission part 300 to move downward so that the transmission part 300 moves from the sealing position to the open position. Body 153 is connected, the water in the pilot channel 170 flows through the lower chamber 153 and flows out from the drain hole 140, because the aperture of the pilot channel 170 is larger than the aperture of the fine hole 421, the water entering the pilot channel 170 from the fine hole 421 is far away. If the water flowing out of the pilot channel 170 is smaller than the water flowing out of the pilot channel 170, the pressure in the pressure control chamber 422 will decrease and negative pressure will be generated. The downward pressure on the pilot valve core is greater than the above-mentioned upward pressure, so that the pilot valve core moves downward, and the first sealing convex The ring 423 seals the first water outlet 412, the second sealing convex ring 424 opens the second water outlet 413, the water flows through the second water outlet 413 and is discharged from the second water outlet channel 130, at this time, the water discharged from the second water outlet channel 130 is Hot water with preset temperature.

The above is only a preferred embodiment of the utility model, so the scope of implementation of the utility model cannot be limited accordingly, that is, the equivalent changes and modifications made according to the patent scope of the utility model and the contents of the specification should still belong to this utility model. within the scope of utility models.

Claims (9)

1. A water temperature selection switch valve, characterized in that: it comprises: The fixed part, which is provided with the first water inlet (110), the first water outlet channel (120), the second water outlet channel (130), the drainage hole (140), the first assembly cavity (150), and the first assembly cavity (150) of the second assembly cavity (160) and the pilot channel (170) connected to the second assembly cavity (160), the first water inlet (110) connected to the first assembly cavity (150), the first assembly cavity ( 150) includes an upper chamber (152) and a lower chamber (153) that are not connected to each other; A temperature sensing element (200) capable of expanding or contracting due to temperature changes, which is located in the first assembly cavity (150), and the first water inlet (110) corresponds to the temperature sensing element (200); The transmission part (300), which is movably connected in the pilot channel (170) and is connected to the temperature sensing element (200) and moves between the sealing position and the open position. When the transmission part (300) is in the sealing position, the pilot channel (170 ) is not connected with the lower chamber (153), and the pilot channel (170) is connected with the lower chamber (153) and the drainage hole (140) when the transmission member (300) is in the open position; Under the action of water pressure in the pilot channel (170), the pilot valve that can control the first water inlet (110) to switch through the first water outlet channel (120) and the second water outlet channel (130) is installed in the second assembly chamber (160). 2. A water temperature selection switch valve according to claim 1, characterized in that it also includes a sliding seat (151) movably attached to the first assembly cavity (150), and the temperature sensing element (200) is attached to Inside the sliding seat (151), the temperature sensing element (200) cooperates with the sliding seat (151) to separate the first assembly cavity (150) into an upper cavity (152) and a lower cavity (153) that are not connected to each other. The drainage hole (140) is connected to the lower cavity (153), and the pilot channel (170) is connected to the lower cavity (153) when the transmission member (300) is in the open position. 3. A water temperature selection switch valve according to claim 2, characterized in that it further comprises a first elastic member (154), and the first elastic member bears against the sliding seat (151) and the first assembly cavity ( 150) between the walls of the cavity. 4. A water temperature selective switch valve according to claim 1, characterized in that: the cavity wall of the second assembly cavity (160) is provided with a first through hole (161) connected to the first assembly cavity (150). ), the pilot valve includes: A valve body (410), which is provided with a second water inlet (411), a first water outlet (412) and a second water outlet (413), the second water inlet (411) is connected to the first through hole (161), The first water outlet (412) is connected to the first water outlet channel (120), and the second water outlet (413) is connected to the second water outlet channel (130); The pilot spool is movably connected in the valve body (410), and it is provided with a thin hole (421) connected with the second water inlet (411), forming a gap between it and the valve body (410) and the fixed part. A pressure control chamber (422), the pilot channel (170) and the fine hole (421) are connected to the pressure control chamber (422); The transmission part (300) moves to control the water pressure in the pressure control chamber (422) and then drives the pilot spool to move to selectively seal the first water outlet (412) and the second water outlet (413) so that the second water inlet (411 ) to switch and connect the first water outlet channel (120) and the second water outlet channel (130). 5. A water temperature selection switch valve according to claim 4, characterized in that: the first water outlet (412) and the second water outlet (413) are arranged at intervals up and down, and the second water inlet (411) is located at two Between the water outlets, the pilot spool slides up and down and is mounted on the valve body (410). 6. A water temperature selection switch valve according to claim 4, characterized in that: the pilot spool includes a first valve shaft (420) and can respectively seal the first water outlet (412) and the second water outlet ( 413), the first sealing protruding ring (423) and the second sealing protruding ring (424), the two sealing protruding rings are fixedly connected to the first valve shaft (420) and arranged at intervals along the length direction of the first valve shaft (420), the two The space between the sealing protruding rings corresponds to the second water inlet (411), the thin hole (421) runs through the second sealing protruding ring (424), and the gap between the second sealing protruding ring (424) and the valve body (410) and the fixed part The pressure control cavity (422) is formed. 7. A water temperature selection switch valve according to claim 1, characterized in that: the fixed part includes a water distribution pipe (500), and the water distribution pipe (500) is provided with a third water inlet (510), a third water outlet channel (520) and the fourth water outlet channel (530), and there is another one that can switch the third water inlet (510) to connect the third water outlet channel (520) and the fourth water outlet channel (530) under the action of water pressure Reversing valve (560), it is installed in the water distribution pipe (500). 8. A water temperature selection switch valve according to claim 7, characterized in that: the reversing valve (560) includes a valve seat (540) installed in the water distribution pipe (500) and a valve seat (540) that is movably attached to the valve The reversing valve core in the seat (540), the valve seat (540) is provided with a large water outlet hole (541) and a small water outlet hole (542), and the reversing valve core includes the second valve shaft (550) and can respectively seal the large and small water outlets. The large sealing ring (551) and the small sealing convex ring (552) of the holes (541, 542), the large and small sealing rings are fixed on the second valve shaft (550) and arranged at intervals along the length direction of the second valve shaft (550), the size The space between the sealing rings corresponds to the third water inlet (510). 9. A water temperature selection switch valve according to claim 1, characterized in that it also includes a temperature adjustment mechanism, which includes a fixed seat (600) fixed in the first assembly cavity (150), attached to the fixed The shaft sleeve (610) in the seat (600), the adjustment shaft (620) movably connected with the shaft sleeve (610) and the adjustment knob (630) that can rotate relative to the fixed part, the adjustment shaft (620) transmission connection adjustment knob (630 ) and temperature sensing element (200).

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