Anti-freezing valve with high temperature sensing sensitivity

Abstract

The utility model provides a kind of frost-proof valve with high temperature sensing sensitivity, including valve seat, temperature sensing valve core and valve sleeve;The valve seat has valve cavity and water inlet;The valve seat is plastic material;The temperature sensing valve core has temperature sensing part, and the temperature sensing valve core is installed in valve cavity, and its temperature sensing part is extended outside valve seat;The temperature sensing valve core includes shell and valve stem;The valve stem is movably installed in shell to close or open the water inlet;The valve sleeve is connected with valve seat and is sleeved outside temperature sensing part;The valve sleeve is metal or alloy material;Multiple outer fins are distributed on the outer wall of the valve sleeve, and multiple inner fins are distributed on the inner wall of the valve sleeve;First drainage channel is provided between the temperature sensing valve core and valve cavity, which is communicated with water inlet;The gap between adjacent inner fins forms second drainage channel communicated with first drainage channel.The valve seat of the technical scheme can slow down the water temperature transmission in faucet, so that the valve core preferentially senses ambient temperature to open or close, with high sensitivity and good frost-proof effect.

Description

Technical Field

[0001] This utility model relates to an antifreeze valve with high temperature sensitivity. Background Technology

[0002] Existing antifreeze valves, such as the seepage drainage antifreeze valve disclosed in utility model patent CN221974459U, connect to the faucet via a valve seat. Since the valve seat is typically made of metal or alloy, which has high thermal conductivity, the water temperature is transferred to the valve body through the valve seat. This makes the valve body highly susceptible to water temperature fluctuations. However, the water temperature in pipes and faucets cools down more slowly than air. Therefore, when the ambient temperature drops suddenly, the valve body remains at a relatively high temperature, preventing the antifreeze valve from opening. This can easily lead to a situation where, by the time the water temperature reaches the freezing point, the valve seat has transferred the heat to the valve body in time, resulting in poor antifreeze performance, easy freezing, and disruption of normal use. Some antifreeze valves attempt to overcome this problem by raising the temperature sensing threshold, but this can cause dripping even when the ambient temperature rises to 5-6°C, resulting in water waste. Utility Model Content

[0003] The purpose of this utility model is to provide an antifreeze valve with high temperature sensitivity, including a valve seat, a temperature-sensing valve core, and a valve sleeve; the valve seat is used to connect to a water source, and the valve seat has a valve cavity and a water inlet communicating with the valve cavity; the valve seat is made of plastic; the temperature-sensing valve core has a temperature-sensing part, which is installed in the valve cavity and extends out of the valve seat; the temperature-sensing valve core includes a shell and a valve stem; the valve stem is movably installed in the shell to close or open the water inlet; the temperature-sensing valve core drives the valve stem to move by sensing temperature changes through the temperature-sensing part; the valve sleeve is connected to the valve seat and sleeved over the temperature-sensing part; the valve sleeve is made of metal or alloy; the outer wall of the valve sleeve has multiple outer fins, and the inner wall of the valve sleeve has multiple inner fins; a first drainage channel communicating with the water inlet is provided between the temperature-sensing valve core and the valve cavity; the gap between adjacent inner fins forms a second drainage channel, which communicates with the first drainage channel.

[0004] The valve seat in this technical solution is made of plastic, which has low thermal conductivity, significantly reducing the rate of heat transfer to the water. The valve sleeve is equipped with outer and inner fins, increasing the surface area in contact with the outside air, allowing the temperature-sensing part of the temperature-sensing valve core to preferentially sense the ambient temperature. During cooling, the inlet opens quickly to prevent freezing, and the water flows into the second drain channel, contacting the housing of the temperature-sensing valve core. This heats the valve core, driving the valve stem forward, reducing the distance between the valve stem and the inlet, thus decreasing the water flow and reducing water waste. When the temperature drops sharply and the difference between the water temperature and the air temperature is large, the inlet may even close as soon as the water flows into the second drain channel, reopening after cooling through contact with the air. During heating, the inlet closes quickly, further reducing water waste.

[0005] The antifreeze valve in this technical solution can slow down the transfer of water temperature in water pipes and faucets, and prioritizes sensing the ambient temperature to open or close. By utilizing the temperature difference between the external ambient temperature and the water flowing to the outside of the temperature-sensing valve core housing, the valve stem maintains dynamic balance, resulting in high sensitivity, excellent antifreeze effect, and energy saving. Attached Figure Description

[0006] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0007] Figure 2 This is an exploded view of the structure of Embodiment 1 of this utility model.

[0008] Figure 3 This is a cross-sectional view of the inlet when it is closed in Embodiment 1 of this utility model.

[0009] Figure 4 This is a cross-sectional view of the water inlet of Embodiment 1 of this utility model when it is open.

[0010] Figure 5 and Figure 6 This is a schematic diagram of the valve seat at different angles according to Embodiment 1 of this utility model.

[0011] Figure 7 This is a cross-sectional view of the valve seat according to Embodiment 1 of this utility model.

[0012] Figure 8 This is a schematic diagram of the structure of the permeable gasket of this utility model.

[0013] Figure 9 and Figure 10 This is a schematic diagram of the mounting cover of this utility model at different angles.

[0014] Figure 11 This is a schematic diagram of the limiting plug of this utility model.

[0015] Figure 12 and Figure 13 This is a schematic diagram of the valve sleeve at different angles of this utility model.

[0016] Figure 14 This is an exploded view of the structure of Embodiment 2 of this utility model. Detailed Implementation

[0017] The following description, in conjunction with the accompanying drawings, further illustrates the proposed solution:

[0018] Example 1

[0019] See appendix Figure 1-13 A high temperature-sensitive antifreeze valve includes a valve seat 1, a temperature-sensing valve core 2, and a valve sleeve 3.

[0020] The valve seat 1 is used to connect to a water source. The valve seat 1 has a valve cavity 11 and a water inlet 12 communicating with the valve cavity 11. The valve seat 1 is made of plastic. The temperature-sensing valve core 2 has a temperature-sensing part 20. The temperature-sensing valve core 2 is installed in the valve cavity 11, and its temperature-sensing part 20 extends out of the valve seat 1. The temperature-sensing valve core 2 includes a housing 21 and a valve stem 22. The valve stem 22 is movably installed in the housing 21 to close or open the water inlet 12. The temperature-sensing valve core 2 senses temperature through the temperature-sensing part 20. The valve stem 22 is moved by the temperature change; the valve sleeve 3 is connected to the valve seat 1 and is sleeved on the outside of the temperature sensing part 20; the valve sleeve 3 is made of metal or alloy; the outer wall of the valve sleeve 3 is distributed with a plurality of outer fins 31, and the inner wall of the valve sleeve 3 is distributed with a plurality of inner fins 32; a first drainage channel 12 communicating with the water inlet 12 is provided between the temperature sensing valve core 2 and the valve cavity 11; the gap between adjacent inner fins 32 forms a second drainage channel 33, and the second drainage channel 33 communicates with the first drainage channel 12.

[0021] In this embodiment, the valve sleeve 3 is screwed to the rear end of the valve seat 1, and a sealing ring is sandwiched between the valve sleeve 3 and the valve seat 1.

[0022] The cavity wall of the valve chamber 11 is provided with a plurality of axially extending and circumferentially spaced ribs 14, and the gap between adjacent ribs 14 forms a first drainage channel 12.

[0023] The second drainage channel 33 has a drainage outlet 331 at its rear end.

[0024] The valve seat 1 in this technical solution is made of plastic, which has low thermal conductivity, significantly reducing the rate of heat transfer to the water. The valve sleeve 3 is equipped with outer fins 31 and inner fins 32, increasing the area in contact with the outside air, allowing the temperature-sensing part 20 of the temperature-sensing valve core 2 to preferentially sense the ambient temperature. During cooling, the inlet 12 opens quickly to prevent freezing. When the water flows to the second drain channel 33 and contacts the housing 21 of the temperature-sensing valve core 2, the valve core 2 heats up, driving the valve stem 22 forward, reducing the distance between the valve stem 22 and the inlet 12, thus reducing water flow and minimizing water waste. When the temperature drops sharply and the water temperature differs significantly from the air temperature, the inlet 12 may even close as soon as the water flows to the second drain channel 33, reopening after cooling through contact with the air. During heating, the temperature-sensing valve core 2 quickly senses the ambient temperature and causes the inlet 12 to close rapidly, further reducing water waste.

[0025] The antifreeze valve of this technical solution can slow down the transfer of water temperature from the water pipe and faucet to the valve sleeve 3, so that the temperature sensing valve core 2 can prioritize sensing the ambient temperature to open or close; by utilizing the temperature difference between the external ambient temperature and the water flowing to the housing 21 of the temperature sensing valve core 2, the valve stem 22 can maintain dynamic balance, which has high sensitivity, good antifreeze effect, and saves energy.

[0026] Each outer fin 31 extends along the length of the valve sleeve 3 and is evenly distributed circumferentially; each inner fin 32 extends along the length of the valve sleeve 3 and is evenly spaced circumferentially so that each second drainage channel 33 is evenly spaced circumferentially.

[0027] The outer fins 31 and inner fins 32 of this technical solution are circumferentially distributed around the temperature sensing part 20 of the temperature sensing valve core 2, which can quickly conduct the temperature of the air; the second drainage channel 33 of this technical solution is also circumferentially distributed, and the discharged water flow can be dispersed around the temperature sensing part 20, quickly conduct the water temperature, and improve the temperature sensing sensitivity.

[0028] The inlet 12 is provided with a water-blocking sealing ring 4, which has an inner hole 41. The front end of the valve stem 22 faces the inlet 12. When the valve stem 22 closes the inlet 12, it means that the front end of the valve stem 22 is inserted into the inner hole 41 of the water-blocking sealing ring 4 to block it. When the valve stem 22 opens the inlet 12, it means that the front end of the valve stem 22 is withdrawn from the inner hole 41 of the water-blocking sealing ring 4. A water-permeable gasket 5 is sandwiched between the water-blocking sealing ring 4 and the temperature-sensing valve core 2. The water-permeable gasket 5 has a central hole 52 for the valve stem 22 to pass through. The end face of the water-permeable gasket 5 near the temperature-sensing valve core 2 has multiple circumferentially evenly spaced guide grooves 51, which are connected to the first drainage channel 12.

[0029] This technical solution disperses the water flow through the guide groove 51 of the permeable gasket 5, directing it to each of the first drainage channels 12 and then dispersing it to each of the second drainage channels 33.

[0030] In this embodiment, both ends of the permeable gasket 5 are provided with guide grooves 51, so there is no need to separate the surfaces during installation, which speeds up the installation efficiency.

[0031] The inlet 12 is covered with an installation cover 6, which has a through hole 61 and a settling groove 62 inside the through hole 61. The water-blocking sealing ring 4 is installed in the settling groove 62. The installation cover 6 abuts against the water-permeable gasket 5.

[0032] This technical solution uses the installation cover 6 to limit the water-blocking sealing ring 4 and the water-permeable gasket 5, thereby achieving the installation and fixation of the water-blocking sealing ring 4 and the water-permeable gasket 5.

[0033] The housing 21 has a cavity 211 and an opening communicating with the cavity 211; the rear part of the valve stem 22 is installed in the cavity 211; the cavity 211 is filled with temperature-sensitive wax oil (not shown in the figure) to form the temperature-sensitive part 20; the temperature-sensitive wax oil can expand or contract in response to temperature changes; the valve stem 22 is pushed forward by the temperature-sensitive wax oil when it expands; the valve stem 22 is moved backward when the temperature-sensitive wax oil contracts.

[0034] This technical solution can also be sensitively applied when using temperature-sensitive wax oil with a phase change temperature of 1-2.5℃.

[0035] The cavity is provided with a limiting plug 23, the limiting plug 23 is provided with a through hole 231, and the front end of the valve stem 22 passes through the through hole 231 and is movablely engaged with it.

[0036] The peripheral wall of the limiting plug 23 is provided with conical barbs 232 to strengthen the fixation and prevent it from detaching from the housing 21.

[0037] A spring 24 is provided between the limiting plug 23 and the valve stem 22 to keep the valve stem 22 moving backward; specifically, a limiting part 221 is provided at the rear end of the valve stem 22, and the spring 24 is sleeved on the valve stem 22, with the rear end of the spring 24 abutting against the limiting part 221.

[0038] An oil-blocking sealing ring 25 and an anti-wear washer 26 are provided between the limiting plug 23 and the spring 24.

[0039] In this embodiment, two oil-blocking sealing rings 25 and two anti-wear washers 26 are provided, and the oil-blocking sealing rings 25 and the anti-wear washers 26 are spaced apart. One of the oil-blocking sealing rings 25 abuts against the limiting plug 23, and one of the anti-wear washers 26 abuts against the front end of the spring 24.

[0040] In this embodiment, the anti-wear washer 26 is a copper washer.

[0041] The valve seat 1 has a connection port 15 on the front side of the water inlet 12. The connection port 15 has an internal thread 151 and is used to screw into the water outlet of the faucet. A sealing washer 16 is provided inside the connection port 15.

[0042] Example 2

[0043] See appendix Figure 14 A high temperature-sensitive antifreeze valve is described in this embodiment, which differs from the first embodiment above in that the high temperature-sensitive antifreeze valve also includes an adapter 7; the valve seat 1 does not have a connection port on its front side, but is connected to a faucet via the adapter 7.

[0044] Specifically, the adapter 7 is provided with a threaded hole 71, and the outer wall of the front end of the valve seat 1 is provided with an external thread 16. One end of the threaded hole 71 is screwed into the external thread of the valve seat 1, and the other end of the threaded hole 71 is used to screw into the water outlet of the faucet.

[0045] The above preferred embodiments should be regarded as illustrative examples of the embodiments of the present application. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present application should be considered within the scope of protection of this patent.

Claims

1. A high-temperature-sensitivity antifreeze valve, comprising a valve seat, a temperature-sensing valve core, and a valve sleeve; characterized in that: The valve seat is used to connect to a water source, and the valve seat has a valve cavity and a water inlet communicating with the valve cavity; the valve seat is made of plastic. The temperature-sensing valve core has a temperature-sensing part, which is installed inside the valve cavity and extends out of the valve seat; the temperature-sensing valve core includes a housing and a valve stem; the valve stem is movably installed in the housing to close or open the water inlet; the temperature-sensing valve core drives the valve stem to move by sensing temperature changes through the temperature-sensing part. The valve sleeve is connected to the valve seat and is fitted over the temperature sensing part; the valve sleeve is made of metal or alloy; the outer wall of the valve sleeve has multiple outer fins, and the inner wall of the valve sleeve has multiple inner fins. A first drainage channel connected to the water inlet is provided between the temperature-sensing valve core and the valve cavity. The gap between adjacent inner fins forms a second drainage channel, which is connected to the first drainage channel.

2. The antifreeze valve with high temperature sensitivity according to claim 1, characterized in that: Each outer fin extends along the length of the valve sleeve and is circumferentially distributed. Each inner fin extends along the length of the valve sleeve and is circumferentially spaced so that each second drainage channel is circumferentially spaced.

3. The antifreeze valve with high temperature sensitivity according to claim 2, characterized in that: The inlet is equipped with a water-blocking sealing ring, which has an inner hole; the front end of the valve stem faces the inlet; closing the inlet with the valve stem means that the front end of the valve stem is inserted into the inner hole of the water-blocking sealing ring to block it; opening the inlet with the valve stem means that the front end of the valve stem is withdrawn from the inner hole of the water-blocking sealing ring. A water-permeable gasket is sandwiched between the water-blocking sealing ring and the temperature-sensing valve core; The permeable gasket is provided with a central hole for the valve stem to pass through; The permeable gasket has multiple circumferentially spaced guide grooves on its end face near the temperature-sensing valve core, and the guide grooves are connected to the first drainage channel.

4. The antifreeze valve with high temperature sensitivity according to claim 3, characterized in that: The inlet is covered with an installation cover, which has a through hole and a groove inside the through hole. The water-blocking sealing ring is installed in the groove. The mounting cover abuts against the water-permeable gasket.

5. The antifreeze valve with high temperature sensitivity according to claim 4, characterized in that: The housing has a cavity and an opening communicating with the cavity; the rear part of the valve stem is installed in the cavity; the cavity is filled with temperature-sensitive wax oil to form the temperature-sensing part; The cavity is provided with a limiting plug, the limiting plug is provided with a through hole, and the front end of the valve stem passes through the through hole and is movablely engaged with it.

6. The antifreeze valve with high temperature sensitivity according to claim 5, characterized in that: The peripheral wall of the limiting plug is provided with conical barbs.

7. The antifreeze valve with high temperature sensitivity according to claim 6, characterized in that: A spring is provided between the limiting plug and the valve stem to keep the valve stem moving backward; An oil-blocking sealing ring and an anti-wear washer are provided between the limiting plug and the spring.

8. The antifreeze valve with high temperature sensitivity according to any one of claims 1-7, characterized in that: The valve seat has a connection port on the front side of the water inlet, and the connection port has an internal thread. The connection port is used to screw into the water outlet of the faucet.

9. The antifreeze valve with high temperature sensitivity according to any one of claims 1-7, characterized in that: It also includes an adapter; the adapter is provided with a threaded hole, the outer wall of the front end of the valve seat is provided with an external thread, one end of the threaded hole is screwed into the external thread of the valve seat, and the other end of the threaded hole is used to screw into the water outlet of the faucet.

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