Anti-scald module and shower

Abstract

The utility model provides an anti-scald module and a shower, the anti-scald module comprises a temperature limiting valve core, and further comprises a shell provided with a water inlet port and a water outlet port, and a water supply channel is arranged between the water inlet port and the water outlet port; the first mounting part is arranged on the shell and is communicated with the water supply channel between the water inlet port and the water outlet port; the temperature limiting valve element is installed on the first installation part and can cut off the water supply channel. The anti-scald module can be connected to the water outlet end of an existing common cold and hot valve element and is used for limiting the highest water outlet temperature, when the temperature passing through the temperature limiting valve element is too high, a temperature bulb body or a memory metal spring or the like in the temperature limiting valve element is heated to deform to drive a temperature limiting valve rod in the temperature limiting valve element to move, and therefore on-off of a water supply channel can be controlled; water flow is blocked when the temperature is higher than the limited temperature, and the problem that a user is scalded due to too high temperature can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bathroom products, in particular to an anti-scalding module and a shower. Background Art

[0002] When users use showers, water pressure issues in different regions or gas water heaters may cause the valve core to adjust the temperature incorrectly, resulting in too high a water outlet temperature, which affects the use of the shower. Some products will add a temperature limit ring to the valve core of the mixing valve to mechanically limit the rotation angle of the valve core to control the water outlet temperature. The method of adding a temperature limit ring to the valve core to limit the rotation angle of the valve core is essentially to control the water inlet area of ​​hot and cold water, but this method is only applicable when the water pressure of hot and cold water is the same. When the hot water pressure is too high, the water outlet temperature of the shower will be too high, which may even seriously scald the user. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide an anti-scalding module and a shower.

[0004] The utility model is implemented by the following method: an anti-scalding module includes a temperature-limiting valve core, and also includes: a housing, provided with a water inlet port and a water outlet port, a water supply channel is provided between the water inlet port and the water outlet port;

[0005] The first mounting portion is disposed on the housing and communicates with the water supply channel between the water inlet port and the water outlet port; the temperature limiting valve core is mounted on the first mounting portion and can cut off the water supply channel.

[0006] Preferably, the first mounting portion is a first mounting cavity opened in the shell, the temperature limiting valve core is installed in the first mounting cavity, the water supply channel passes through the first mounting cavity, the water supply channel is connected to the inner end of the first mounting cavity, and the temperature limiting valve core is used to control the on-off of the water supply channel between the inner end of the first mounting cavity and the water outlet port.

[0007] Preferably, the first installation cavity has a first port at one end away from the water supply channel, and a pressure cover is connected to the first port. The pressure cover cooperates with the temperature limiting valve core to prevent the temperature limiting valve core from escaping from the first installation cavity; the part of the valve stem of the temperature limiting valve core that passes through the pressure cover is connected to a knob.

[0008] Preferably, a second mounting portion is further provided on the shell, and the second mounting portion is arranged in parallel with the first mounting portion. The second mounting portion is a second mounting cavity opened in the shell, and the inner end of the second mounting cavity is connected to the water supply channel. The shell is provided with a drainage channel connected to the second mounting cavity, and the second mounting portion is installed with a one-way valve group for controlling the liquid in the water supply channel to be discharged from the drainage channel.

[0009] Preferably, the one-way valve group includes a one-way valve and a one-way valve driving member; the one-way valve is arranged in the second installation cavity and located between the drainage channel and the water supply channel. Under normal conditions, the one-way valve is closed to cut off the water supply channel and the drainage channel, and the one-way valve driving member is used to drive the one-way valve to open to control the connection between the water supply channel and the drainage channel.

[0010] Preferably, the one-way valve driving member includes a drainage valve rod which is telescopically installed in the second installation cavity. A second port is provided at one end of the second installation cavity away from the water supply channel. One end of the drainage valve rod abuts against the valve core of the one-way valve, and the other end of the drainage valve rod extends out of the second installation cavity through the second port.

[0011] Preferably, a nut is also screwed at the second port, and a telescopic hole is provided on the nut for the drainage valve rod to pass through. A limiting portion is provided on the drainage valve rod to cooperate with the nut to prevent the drainage valve rod from coming out.

[0012] Preferably, a second sealing ring is provided at the sliding fit portion of the drainage valve rod and the telescopic hole; a first sealing ring is provided at the cooperation portion of the outer periphery of the nut and the inner wall of the second installation cavity; a drainage button is connected to the portion of the drainage valve rod passing through the nut.

[0013] Preferably, the temperature-limiting valve core is a telescopic structure. When the water in the water supply channel exceeds the preset temperature, the temperature-limiting valve core expands to cut off the water supply channel.

[0014] A shower includes a main body, a mixing valve and a water outlet joint installed on the main body, and is characterized in that it further includes an anti-scalding module as described in any one of the above. The water inlet port of the housing is connected to the water outlet of the mixing valve, and the water outlet port of the housing is connected to the water outlet joint.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model provides a heat insulation module. Compared with the prior art, the present utility model has at least the following technical effects: 1. This heat insulation module can be connected to the water outlet end of an existing ordinary cold and hot water valve core to limit the maximum water outlet temperature. When the temperature passing through the temperature-limiting valve core is too high, the temperature-sensitive bulb body or shape memory metal spring inside it is heated and deformed to drive the temperature-limiting valve rod inside it to move, so as to control the on-off of the water supply channel, that is, to block the water flow when the temperature is higher than the limited temperature, thus avoiding the problem of scalding users due to different cold and hot water pressures, and also avoiding the problem of too high water outlet temperature caused by accidentally turning the handwheel to the end directly. 2. A drainage channel and a one-way valve group are additionally arranged in the heat insulation module. When the water temperature is higher than the set temperature, the temperature-limiting valve core closes the water supply channel. To restore the water outlet again, it is necessary to reduce the water temperature in front of the temperature-limiting valve core. If waiting for natural cooling, it will take a long time. Then, through the action of the one-way valve group, the one-way valve group can be opened to discharge the high-temperature hot water when the water outlet needs to be restored. At this time, the temperature of the incoming water is reduced through the front-end mixing valve, so as to achieve the purpose of rapid cooling and reduce the waiting time to quickly restore the water outlet. 3. A drainage channel is separately communicated with the second installation cavity, and the other end of the drainage valve rod extends out of the second installation cavity through the second port. Then, the hot water discharged after the one-way valve is opened can be discharged through the drainage channel, avoiding scalding the user who is pressing the one-way valve rod.

[0017] The present utility model provides a shower. Compared with the prior art, the present utility model has at least the following technical effects:

[0018] 1. After adopting the above heat insulation module, the hot water mixed by the mixing valve is output to the water outlet joint through the heat insulation module. When the water temperature is too high, the temperature-limiting valve core will block the water supply channel to block the output of overheated hot water, so as to avoid scalding users. 2. The heat insulation module is provided with a one-way valve group and a drainage channel for quickly discharging the overheated hot water in the water supply channel, so as to quickly cool down and reset the temperature-limiting valve core, which helps to quickly restore the water outlet of the shower and reduces the waiting time of users. 3. The overall structure of the heat insulation module is simple and does not occupy too much space of the shower. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the discrete components of a heat insulation module of the present utility model.

[0020] Figure 2 is a schematic cross-sectional view of a heat insulation module of the present utility model.

[0021] Figure 3 is a three-dimensional view of the temperature-limiting valve core of the present utility model.

[0022] Figure 4 is a schematic diagram of the normal outflow state of hot water in the water supply channel of a heat insulation module of the present utility model.

[0023] Figure 5 It is a schematic diagram of a state in which a one-way valve of an anti-scalding module of the utility model is opened to discharge hot water from a drainage channel.

[0024] Figure 6 It is a schematic diagram of the state in which hot water in a water supply channel of an anti-scalding module of the utility model is discharged from a drainage channel.

[0025] Figure 7 The utility model is a structural schematic diagram of a shower.

[0026] Figure 8 The utility model is a schematic diagram of the internal structure of a shower.

[0027] Figure 9 The utility model is a cross-sectional view of an anti-scalding module of a shower.

[0028] Explanation of the accompanying symbols: 1. Anti-scalding module; 11. Temperature limiting valve core; 111. Temperature limiting valve stem; 12. Shell; 13. Water inlet port; 14. Water outlet port; 15. Water supply channel; 16. Pressure cover; 17. One-way valve group; 171. One-way valve; 172. Drain valve stem; 173. Nut; 174. First sealing ring; 175. Second sealing ring; 176. Retaining ring; 177. Drain button; 18. Drain channel; 19. Temperature adjustment knob; 2. Main body; 3. Mixing valve; 4. Water outlet connector. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] See also Figures 1 to 6 A scalding prevention module 1 includes a temperature limiting valve core 11, and also includes: a housing 12, provided with a water inlet port 13 and a water outlet port 14, a water supply channel 15 is provided between the water inlet port 13 and the water outlet port 14; a first mounting portion is provided on the housing 12 and communicates with the water supply channel 15 between the water inlet port 13 and the water outlet port 14; the temperature limiting valve core 11 is installed on the first mounting portion and can cut off the water supply channel 15. The scalding prevention module 1 can be connected to the water outlet end of the existing common cold and hot valve core to limit the maximum outlet water temperature. When the temperature of the temperature limiting valve core 11 is too high, the internal temperature package or memory metal spring thereof is deformed by heat to drive the temperature limiting valve stem 111 therein to move, so as to realize the control of the on-off of the water supply channel 15, that is, to realize the blocking of water flow when the temperature is higher than the limited temperature, so as to avoid the problem of scalding the user due to the different water pressures of cold and hot water, and also to avoid the problem of excessively high outlet water temperature caused by accidentally turning the hand wheel to the bottom.

[0031] See also Figures 1 to 6, preferably, the first mounting portion is a first mounting cavity formed in the housing 12, the temperature-limiting valve core 11 is mounted in the first mounting cavity, the water supply channel 15 communicates with the inner end of the first mounting cavity, the water outlet port 14 communicates with the side wall of the first mounting cavity, and the temperature-limiting valve core 11 is used to control the on-off of the water supply channel 15 between the inner end of the first mounting cavity and the water outlet port 14. One end of the temperature-limiting valve core 11 close to the water supply channel 15 intakes water, and the side surface discharges water. When the temperature is higher than the set value, the valve core closes and no water is discharged; when the inlet water temperature is less than the set value, the valve core discharges water normally.

[0032] Please refer to Figures 1 to 6 , preferably, one end of the first mounting cavity away from the water supply channel 15 has a first port, a gland 16 is connected at the first port, the gland 16 is in limit fit with the temperature-limiting valve core to prevent the temperature-limiting valve core from disengaging from the first mounting cavity; a part of the valve stem of the temperature-limiting valve core 11 passing through the gland 16 is connected with a temperature adjustment knob 19. Rotating the temperature adjustment knob 19 to drive the valve stem connecting the temperature-limiting valve core 11 can adjust the maximum water temperature that the temperature-limiting valve core 11 can pass through.

[0033] Please refer to Figure 1 、 Figure 2 、 Figures 4 to 6 , preferably, a second mounting portion is further provided on the housing 12, the second mounting portion is arranged in parallel with the first mounting portion, the second mounting portion is a second mounting cavity formed in the housing 12, the inner end of the second mounting cavity communicates with the water supply channel 15, the housing 12 is provided with a drainage channel 18 communicating with the second mounting cavity, and a one-way valve group 17 is installed in the second mounting portion to control the liquid in the water supply channel 15 to be discharged from the drainage channel 18. By adding a one-way valve group 17 and a drainage channel in the anti-scald module 1, when the water temperature is higher than the set temperature, the temperature-limiting valve core 11 closes the water supply channel 15. To resume water discharge, it is necessary to reduce the water temperature in front of the temperature-limiting valve core. Waiting for natural cooling will take a long time. Then, when it is necessary to resume water discharge, the one-way valve group 17 can be opened under the action of the one-way valve group 17 to discharge the high-temperature hot water in the water supply channel 15. At this time, the temperature of the incoming water can be reduced by the front-end mixing valve 3 to achieve the purpose of rapid cooling and reduce the waiting time to quickly resume water discharge.

[0034] Please refer to Figure 1 、 Figure 2 、 Figures 4 to 6, preferably, the one-way valve group 17 includes a one-way valve 171 and a one-way valve driving member; the one-way valve 171 is arranged in the second installation cavity and located between the drainage channel 18 and the water supply channel 15. Under normal conditions, the one-way valve 171 is closed to cut off the water supply channel 15 and the drainage channel 18. The one-way valve driving member is used to drive the one-way valve 171 to open or close to control the communication between the water supply channel 15 and the drainage channel 18. A separate drainage channel 18 communicating with the second installation cavity is provided. The drainage channel 18 can be connected to a hose communicating with the sewer, so that the hot water discharged after the one-way valve 171 is opened can be discharged through the drainage channel 18, avoiding scalding the user who is pressing the valve stem of the one-way valve 171. The one-way valve driving member is used to open the one-way valve 171 for drainage. When the one-way valve driving member does not work, the one-way valve 171 is reset by the water pressure and the internal return spring to block the passage.

[0035] Please refer to Figure 1 , Figure 2 , Figures 4 to 6 , preferably, the one-way valve driving member includes a drainage valve stem 172. The drainage valve stem 172 is telescopically installed in the second installation cavity. A second port is provided at one end of the second installation cavity away from the water supply channel 15. One end of the drainage valve stem 172 abuts against the valve core of the one-way valve 171, and the other end of the drainage valve stem 172 extends out of the second installation cavity through the second port. One end is exposed outside the second installation cavity, which is convenient for operating and pressing the drainage valve stem 172 to open the one-way valve 171.

[0036] Please refer to Figure 1 , Figure 2 , Figures 4 to 6 , preferably, a nut 173 is also screwed at the second port. The nut 173 is provided with a telescopic hole for the drainage valve stem 172 to pass through. A limiting portion is provided on the drainage valve stem 172 to cooperate with the nut 173 to prevent the drainage valve stem 172 from coming out. It is convenient to install the one-way valve group 17 in the second installation cavity of the housing 12.

[0037] Please refer to Figure 1 , Figure 2 , Figures 4 to 6 , preferably, a second sealing ring 175 is provided at the sliding fit portion of the drainage valve stem 172 and the telescopic hole; a first sealing ring 174 is provided at the cooperation portion between the outer periphery of the nut 173 and the inner wall of the second installation cavity; a drainage button 177 is connected to the part of the drainage valve stem 172 passing through the nut 173. It avoids hot water leaking along the valve stem. Preferably, a circlip 176 is provided on the upper side of the connection of the drainage channel 18 in the second installation cavity, and a circlip 176 installation groove is provided on the side wall of the second installation cavity. The inner diameter of the circlip 176 is smaller than the limiting portion of the valve stem to limit the upward movement of the valve stem.

[0038] Please refer to Figure 1 to Figure 6 , preferably, the temperature-limiting valve core 11 is a telescopic structure. When the water in the water supply channel exceeds the preset temperature, the temperature-limiting valve core 11 expands to cut off the water supply channel. The temperature-limiting valve core 11 is provided with a temperature-sensitive element or a shape memory alloy spring, etc. During the telescopic expansion process, the temperature-limiting valve stem 111 inside the temperature-limiting valve core 11 is driven to block or open the water outlet end or water inlet end of the temperature-limiting valve core 11. The specific working principle can refer to the thermostatic valve core.

[0039] Please refer to Figures 1 to 9 , a shower, comprising a main body 2, a mixing valve 3 and a water outlet joint 4 installed on the main body 2, characterized in that it further comprises an anti-scalding module 1 as described in any one of the above, the water inlet port 13 of the housing 12 is connected to the water outlet of the mixing valve 3, and the water outlet port 14 of the housing 12 is connected to the water outlet joint 4. The anti-scalding module 1 can be integrated with the main body 2 or installed separately after being separated. After adopting the above anti-scalding module 1, the hot water mixed and discharged by the mixing valve 3 is output to the water outlet joint 4 through the anti-scalding module 1. When the water temperature is too high, the temperature-limiting valve core will block the water supply channel 15 to block the output of overheated hot water, so as to avoid scalding the user. A one-way valve group 17 is provided on the anti-scalding module 1 for quickly discharging the overheated hot water in the water supply channel 15, so as to facilitate the quick cooling and reset of the temperature-limiting valve core 11, contribute to quickly restoring the water output of the shower, and reduce the waiting time of the user. The one-way valve group 17 can be selected and installed. The water outlet joint 4 of the shower can be connected to a shower head, a rain shower head, etc.

[0040] The working principle of the present invention is as follows:

[0041] The temperature-limiting valve core 11 of the anti-scalding module 1 is in an open state all the time. When the water temperature is higher than the set temperature, the temperature-limiting valve core 11 automatically closes. At this time, the water supply channel 15 is closed and the shower cannot discharge water. To resume water discharge, it is necessary to lower the temperature in front of the temperature-limiting valve core 11. On the one hand, it can wait for natural cooling (the temperature-limiting valve core 11 can be reopened after the temperature drops); or, directly discharge the high-temperature hot water in front of the temperature-limiting valve core 11; by pressing the drain valve stem 172 of the one-way valve group 17 to push open the valve core of the internal one-way valve 171, the hot water in the water supply channel 15 can flow through the one-way valve 171 and into the drain channel 18 for discharge. At the same time, it is necessary to lower the temperature of the water inlet port 13 (that is, lower the water outlet temperature of the shower mixing valve 3), so that the temperature of the temperature-limiting valve core 11 can be lowered and reopened to resume water discharge. The hot water discharged from the drain channel 18 can be externally connected through a hose to avoid directly dripping on the user's hand.

[0042] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change.

[0043] Second, in the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0044] Finally, the above description is only the preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model.

[0045] It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A scalding prevention module, comprising a temperature limiting valve core, characterized in that: Also includes: The housing is provided with a water inlet port and a water outlet port, and a water supply channel is provided between the water inlet port and the water outlet port; The first mounting portion is disposed on the housing and communicates with the water supply channel between the water inlet port and the water outlet port; the temperature limiting valve core is mounted on the first mounting portion and can cut off the water supply channel.

2. The anti-scalding module according to claim 1, characterized in that: The first mounting portion is a first mounting cavity opened in the shell, the temperature limiting valve core is installed in the first mounting cavity, the water supply channel is connected to the inner end of the first mounting cavity, the water outlet port is connected to the side wall of the first mounting cavity, and the temperature limiting valve core is used to control the on-off of the water supply channel between the inner end of the first mounting cavity and the water outlet port.

3. The anti-scalding module according to claim 2, characterized in that: The first installation cavity has a first port at one end away from the water supply channel, and a pressure cover is connected to the first port. The pressure cover cooperates with the temperature limiting valve core to prevent the temperature limiting valve core from escaping from the first installation cavity; the part of the valve stem of the temperature limiting valve core that passes through the pressure cover is connected to a knob.

4. The anti-scalding module according to claim 1, characterized in that: The shell is also provided with a second mounting portion, which is arranged in parallel with the first mounting portion. The second mounting portion is a second mounting cavity opened in the shell, and the inner end of the second mounting cavity is communicated with the water supply channel. The shell is provided with a drainage channel connected with the second mounting cavity, and the second mounting portion is installed with a one-way valve group for controlling the liquid in the water supply channel to be discharged from the drainage channel.

5. The anti-scalding module according to claim 4, characterized in that: The one-way valve group includes a one-way valve and a one-way valve driving member; the one-way valve is arranged in the second installation cavity and is located between the drainage channel and the water supply channel. Under normal circumstances, the one-way valve is closed to cut off the water supply channel and the drainage channel, and the one-way valve driving member is used to drive the one-way valve to open to control the water supply channel and the drainage channel to be connected.

6. The anti-scalding module according to claim 5, characterized in that: The one-way valve driving component includes a drain valve stem, which is telescopically installed in the second installation cavity. A second port is provided at one end of the second installation cavity away from the water supply channel. One end of the drain valve stem is abutted against the valve core of the one-way valve, and the other end of the drain valve stem extends out of the second installation cavity through the second port.

7. The anti-scalding module according to claim 6, characterized in that: A nut is also screwed on the second port, a telescopic hole is provided on the nut for the drain valve stem to pass through, and a limiting portion is provided on the drain valve stem to cooperate with the nut to prevent the drain valve stem from falling out.

8. The anti-scalding module according to claim 7, characterized in that: A second sealing ring is provided at the sliding fitting portion between the drain valve stem and the telescopic hole; a first sealing ring is provided at the fitting portion between the outer periphery of the nut and the inner wall of the second mounting cavity; and a drain button is connected to the portion of the drain valve stem that passes through the nut.

9. The anti-scalding module according to claim 1, characterized in that: The temperature limiting valve core is a telescopic structure. When the water in the water supply channel exceeds a preset temperature, the temperature limiting valve core expands to cut off the water supply channel.

10. A shower, comprising a main body, and a mixing valve and a water outlet joint installed on the main body, characterized in that: It also includes an anti-scalding module as described in any one of claims 1 to 9, the water inlet port of the shell is connected to the water outlet of the mixing valve, and the water outlet port of the shell is connected to the water outlet connector.

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