CN216407806U

CN216407806U - Prevent frostbite and split constant temperature case

Info

Publication number: CN216407806U
Application number: CN202120651817.0U
Authority: CN
Inventors: 吴育志; 林凯; 游锋
Original assignee: Xiamen Dabai Technology Co Ltd
Current assignee: Xiamen Dabai Technology Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-04-29
Anticipated expiration: 2031-03-31

Abstract

The utility model discloses an anti-frost-crack thermostatic valve core which comprises a temperature regulating unit and an anti-freezing unit arranged at the downstream of the temperature regulating unit, wherein the anti-freezing unit comprises a base fixedly connected with the temperature regulating unit and a movable assembly arranged in the base; the base is provided with a cavity for accommodating the movable assembly, the movable assembly is abutted to the opening of the cavity under the action of a pretightening force, the movable assembly moves in the cavity in the direction of compressing the pretightening force to provide a pressure release space for the body matched with the thermostatic valve core to be used under the action of high pressure, and the movable assembly resets after the high pressure disappears.

Description

Prevent frostbite and split constant temperature case

Technical Field

The utility model relates to the technical field of bathroom products, in particular to an anti-frost-crack thermostatic valve core.

Background

With the increasingly better living standard and the increasing technology of sanitary products, people in both the south and the north have great interest in using constant temperature showers to provide comfortable water temperature for showering. However, in the north, especially in winter, if the water is not used for a while, such as on business trip, then the residual water in the shower can freeze in the faucet of the shower because the temperature is too low; or in the ordinary use process, the state of instantaneous high water pressure occasionally occurs, in this case, if the body of the faucet is not provided with a cavity for releasing pressure or an expansion space, the thermostatic valve core or the body of the faucet can crack, break or fail, etc

SUMMERY OF THE UTILITY MODEL

The utility model provides a frost crack prevention thermostatic valve core for solving the problems.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a crack prevention thermostatic valve core comprises a temperature regulating unit and an anti-freezing unit arranged on the downstream of the temperature regulating unit, wherein the anti-freezing unit comprises a base fixedly connected with the temperature regulating unit and a movable assembly arranged in the base; the base is provided with a cavity for accommodating the movable assembly, the movable assembly is abutted to the opening of the cavity under the action of a pre-tightening force, the movable assembly is compressed in the cavity in the direction of the pre-tightening force to move so as to provide a pressure release space for the body matched with the thermostatic valve core to use under the action of high pressure, and the movable assembly resets after the high pressure disappears.

Preferably, the movable assembly comprises a protective cover movably arranged in the cavity and an elastic body arranged above the protective cover, the protective cover moves up and down in the cavity, and the elastic body is pushed by the protective cover to compress upwards or reset and pushed by the elastic body to move downwards.

Preferably, the elastic body is a compression spring or a compressible body.

Preferably, the compressible body is made of soft material.

Preferably, the base has an outer ring, an inner ring disposed inside the outer ring, and a connecting body connecting the outer ring and the inner ring, and the lower end surfaces of the outer ring and the inner ring and the lower end surface of the connecting body form the cavity; the inner ring body is provided with a through hole in a vertically through way.

Preferably, a pressure relief hole is formed in one side, close to the connecting body, of the outer ring body, and the pressure relief hole is communicated with the cavity.

Preferably, the upper end portions of the outer ring body and the inner ring body, the upper end surface of the connecting body and the lower end surface of the plunger form an accommodating cavity, and a working spring is arranged in the accommodating cavity.

Preferably, the temperature adjusting unit comprises a housing, an adjusting component arranged in the housing, a plunger arranged below the adjusting component, and a thermosensitive element penetrating through the plunger, wherein the adjusting component is adjusted up and down in the housing to enable the thermosensitive element to move up and down to enable the plunger to move up and down and adjust the ratio of cold water and hot water inlet, so that the outlet water temperature of the thermostatic valve core is adjusted.

Preferably, the shell is provided with a through cavity with an upper opening and a lower opening, a first water inlet and a second water inlet which are arranged on the side wall of the shell and communicated with the through cavity, and the first water inlet and the second water inlet are arranged in an up-and-down corresponding manner; the plunger is movably arranged between the first water inlet and the second water inlet, and the thermosensitive element moves up and down to push the plunger to move up and down, so that the water inflow of the first water inlet and the second water inlet is changed.

Preferably, the plunger has a spliced pole, locates outer wall outside the spliced pole and connects the spliced pole with the face of connecting of outer wall, it has a plurality of water holes of crossing to run through on the face of connecting, and rivers are followed respectively first water inlet flows through the water hole and the flow direction the through-hole and/or follow the second water inlet flow direction the through-hole.

The utility model has the beneficial effects that:

1) through set up the unit of preventing frostbite in the thermostatic cartridge, set up cavity and mobilizable movable part in the cavity in the unit of preventing frostbite to when receiving high pressure effect or freezing volume expansion for the body of tap, provide pressure release space, its simple structure, manufacturing are easy, machining efficiency is high.

2) The protective cover and the elastic body are arranged in the movable assembly, so that the protective cover can move up and down in the cavity to change the volume inside and outside the cavity and provide a release space for pressure.

3) The elastic body is made of a compression spring or a soft material or a rubber material and the like, and provides reverse acting force for resetting of the protective cover, so that the volume inside and outside the cavity can be changed, and a release space is provided for pressure.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a cross-sectional view of a freeze-crack resistant thermostatic cartridge of the present invention.

Fig. 2 is a structural view of the frost crack prevention thermostatic valve element according to the present invention in a use state.

Fig. 3 is a sectional view of an anti-freeze unit for preventing freeze-cracking of a thermostatic cartridge according to a first embodiment of the present invention in a normal use state.

Fig. 4 is a sectional view of an anti-freeze unit for preventing freeze-cracking of a thermostatic cartridge according to a first embodiment of the present invention in a compressed state.

Fig. 5 is a sectional view of an anti-freeze unit for preventing freeze-cracking of a thermostatic cartridge according to a second embodiment of the present invention in a normal use state.

Fig. 6 is a sectional view of an anti-freeze unit for preventing freeze-cracking of a thermostatic cartridge according to a second embodiment of the present invention in a compressed state.

Fig. 7 is an isometric view of a base of a freeze-crack resistant thermostatic cartridge of the present invention.

Reference numbers in the figures:

1. a temperature adjusting unit; 11. a housing; 111. a first water inlet; 112. a second water inlet; 12. an adjustment assembly; 121. adjusting a rod; 122. a guide bar; 123. a top pillar; 124. a protection spring; 13. a plunger; 131. connecting columns; 132. an outer wall surface; 133. A connecting surface; 134. water passing holes; 14. a thermosensitive element; 141. a columnar body; 142. an annular projection; 143. a step;

2. an anti-freezing unit; 21. a base; 211. an outer ring body; 212. an inner ring body; 213. a linker; 214. an accommodating cavity; 215. a working spring; 216. a through hole; 217. a cavity; 218. a pressure relief vent; 22. a movable component; 221. a protective cover; 222. a compression spring; 223. a clamp spring; 224. a compressible body;

800. a thermostatic valve core; 900. a body.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 7, a crack prevention thermostatic valve cartridge 800 according to a preferred embodiment of the present invention includes a temperature adjusting unit 1, and an anti-freezing unit 2 disposed below the temperature adjusting unit 1; the temperature adjusting unit 1 comprises a shell 11, an adjusting component 12 arranged in the shell 11, a plunger 13 arranged below the adjusting component 12, and a thermosensitive element 14 penetrating through the plunger 13, wherein the adjusting component 12 is adjusted up and down in the shell 11 so that the thermosensitive element 14 moves up and down to move the plunger 13 up and down and adjust the ratio of cold water and hot water inlet, thereby adjusting the outlet water temperature of the thermostatic valve core 800; the anti-freezing unit 2 comprises a base 21 fixedly connected with the shell 11 and a movable assembly 22 arranged in the base 21, wherein the movable assembly 22 moves in the base 21 so as to provide a pressure release space when the body 900 matched with the thermostatic valve core 800 is subjected to high water pressure action or icing expansion; when the high water pressure or ice is released, the movable assembly 22 is reset.

The casing 11 has an upper and lower open-ended logical chamber, locates casing 11 lateral wall and with lead to first water inlet 111 and the second water inlet 112 that the chamber link up mutually, first water inlet 111 with second water inlet 112 corresponds the setting from top to bottom.

The adjusting assembly 12 includes an adjusting rod 121 penetrating through an upper opening of the housing 11, a guide rod 122 movably and fixedly disposed below the adjusting rod 121, a support pillar 123 disposed on a lower end surface of the guide rod 122, and a protection spring 124 disposed above the support pillar 123, the guide rod 122 has a first cavity with openings at two ends, a first internal thread is disposed on an inner wall surface of the first cavity close to the upper end surface, a first external thread is disposed at one end of the adjusting rod 121 close to the guide rod 122, and the first internal thread is screwed with the first external thread, so that the adjusting rod 121 is movably and fixedly connected with the guide rod 122; the top pillar 123 is disposed on the lower end surface of the first cavity, and the protection spring 124 is limited by the top pillar 123 and the adjustment rod 121 and is accommodated in the first cavity.

The thermosensitive element 14 is provided with a cylindrical body 141, an annular protrusion 142 arranged at the middle section of the cylindrical body 141, and a step 143 arranged at the upper end of the cylindrical body 141, the step 143 abuts against the top post 123, and the top post 123 pushes the thermosensitive element 14 to move up and down through the spiral rotation of the adjusting rod 121 and the guide rod 122; the cylindrical body 141 is provided with a second external thread on a wall surface at one end of the step 143 and close to the annular protrusion 142.

The plunger 13 is provided with a connecting column 131, an outer wall surface 132 arranged outside the connecting column 131 and a connecting surface 133 connecting the connecting column 131 and the outer wall surface 132, a plurality of water through holes 134 are arranged on the connecting surface 133 in a penetrating manner, a second internal thread is arranged on the connecting column 131 in a penetrating manner, and a first sealing ring is arranged on the outer wall surface 132; the second internal thread and the second external thread are fixed in a screwed manner, so that the plunger 13 is fixedly connected with the thermosensitive element 14; the plunger 13 is movably arranged between the first water inlet 111 and the second water inlet 112, the first water inlet 111 and the second water inlet 112 are sealed and isolated from each other through the first sealing ring, and the thermosensitive element 14 moves up and down to push the plunger 13 to move up and down, so that the water inflow of the first water inlet 111 and the second water inlet 112 is changed, the hot and cold water ratio is adjusted, and the water temperature of the discharged water is changed.

The through cavity is provided with a third internal thread at one end of the lower opening, a third external thread is arranged at one end, close to the shell 11, of the base 21, and the third internal thread is fixedly connected with the third external thread, so that the shell 11 is fixedly connected with the base 21.

The base 21 has an outer ring body 211, an inner ring body 212 disposed inside the outer ring body 211, and a connecting body 213 connecting the outer ring body 211 and the inner ring body 212, the third internal thread is disposed on an inner wall surface of the outer ring body 211, an accommodating cavity 214 is formed by upper end portions of the outer ring body 211 and the inner ring body 212, an upper end surface of the connecting body 213, and a lower end surface of the plunger 13, and a working spring 215 is disposed in the accommodating cavity 214; after the adjusting rod 121 pushes the guide rod 122 so that the top post 123 pushes the heat sensitive element 14 and the plunger 13 to move downwards, the working spring 215 is compressed; when the plunger 13 needs to move upwards to adjust the water inlet area of the first water inlet 111 and the second water inlet 112, the adjusting rod 121 drives the guide rod 122 to move upwards, and the elasticity of the working spring 215 pushes the plunger 13 and the heat sensitive element 14 to move upwards; the inner ring 212 is vertically provided with a through hole 216 in a penetrating manner, and the lower end of the column 141 is arranged in the through hole 216 in a penetrating manner; the water flows from the first water inlet 111 through the water through hole 134 to the through hole 216 and/or from the second water inlet 112 to the through hole 216, respectively.

A cavity 217 is formed at the lower end of the outer ring body 211, the lower end of the inner ring body 212 and the lower end of the connecting body 213, and the movable assembly 22 is sleeved in the cavity 217; the movable assembly 22 is abutted to the opening of the cavity 217 under the action of a pretightening force, the movable assembly 22 is movable in the cavity 217 towards the direction of the pretightening force in order to provide a pressure release space when the body 900 used with the thermostatic valve core 800 is under the action of high pressure, and the movable assembly 22 is reset after the high pressure disappears.

In the first embodiment, the movable assembly 22 includes a protection cover 221 sleeved on the inner ring 212, and a compression spring 222 disposed above the protection cover 221; a clamping groove is formed in one side, close to the lower end face, of the cavity 217, a clamping spring 223 is arranged in the clamping groove, and the protective cover 221 and the compression spring 222 are limited in the cavity 217 by the clamping spring 223; the inner and outer side walls of the protective cover 221 are respectively provided with a second sealing ring, and the two second sealing rings are in sealing fit with the outer ring body 211 and the inner ring body 212 to prevent air from entering the cavity 217 from one end of the protective cover 221. A pressure relief hole 218 communicated with the cavity 217 is formed in one side, close to the connecting body 213, of the outer ring body 211, and when the cavity 217 is compressed, the pressure relief hole 218 exhausts air in the cavity 217 to exhaust pressure in the cavity 217. Working under normal water pressure, the compression spring 222 is in a pre-compression state, ensuring that the protective cover 221 is not pushed by the water pressure; when the body 900 used with the thermostatic valve element 800 is subjected to high water pressure or is frozen and expanded, the water pressure overcomes the elastic force of the compression spring 222 to push the protective cover 221 and compressed air to buffer the pressure, so that the thermostatic valve element 800 or the body 900 is prevented from being frozen.

In the second embodiment, the movable assembly 22 includes a protective cover 221 sleeved on the inner ring, and a compressible body 224 disposed above the protective cover 221, wherein the compressible body 224 is a compressible material, such as a soft material, a rubber material, etc.; other structures are the same as those of the first embodiment, and are not described in detail herein.

The working principle of the utility model is briefly described as follows:

the thermostatic valve core 800 is arranged in the body 900, and the temperature control handle is connected with the adjusting rod 121; in a normal working state, the first water inlet 111 and the second water inlet 112 are respectively connected with cold water and hot water; rotating the temperature control handle to drive the adjusting rod 121 to rotate, the adjusting rod 121 pushing the guide rod 122 to make the top post 123 push the heat sensitive element 14 and the plunger 13 to move downwards, the working spring 215 is compressed, the water inlet area of the first water inlet 111 is larger than that of the second water inlet 112, cold water is more than hot water, the water temperature is reduced, and water flows from the first water inlet 111 to the through hole 216 through the water through hole 134 and flows from the second water inlet 112 to the through hole 216 to flow out respectively; when the water temperature needs to be increased, that is, the water inlet areas of the first water inlet 111 and the second water inlet 112 are changed, the water inlet area of the first water inlet 111 is smaller than the water inlet area of the second water inlet 112, the adjusting rod 121 drives the guide rod 122 to move upwards, the elastic force of the working spring 215 pushes the plunger 13 and the thermal element 14 to move upwards, and the cold and hot water flows from the first water inlet 111 through the water through hole 134 to the through hole 216 and from the second water inlet 112 to the through hole 216 to flow out respectively. In a normal working state, the movable component 22 is located at a side close to the lower end surface of the base 21, as shown in fig. 3 and 5.

When the density of water starts to change at 4 ℃, when the outside air temperature is reduced, even the temperature is below zero degrees centigrade, the tap is not used for a long time, so that the residual water in the body 900 starts to freeze and freeze to cause the internal volume to increase, and at this time, if there is no space for releasing the volume, the body 900 or the thermostatic valve element 800 may be damaged or cracked. When the inside of the faucet is frozen or a large instantaneous pressure occurs, the pressure pushes the protective cover 221 to move the protective cover 221 upwards, and as shown in fig. 4 and 6, the space of the cavity 217 is reduced, so that the volume of the cavity inside the body 900 is enlarged, and expansion caused by freezing or high instantaneous pressure is avoided; air in the cavity 217 is exhausted from the pressure relief hole 218. When the faucet is normally opened for use, ice can be melted by the temperature of hot water or warm water, so that the thermostatic valve core 800 is prevented from being damaged or the body 900 is prevented from cracking.

According to the utility model, the anti-freezing unit 2 is arranged in the thermostatic valve core 800, the cavity 217 and the movable component 22 which can move in the cavity 217 are arranged in the anti-freezing unit 2, so that a pressure release space is provided when the body 900 of the faucet is subjected to high pressure action or the freezing volume expands, and the thermostatic valve core is simple in structure, easy to manufacture and high in processing efficiency; by arranging the protective cover 221 and the elastic body in the movable assembly 22, the protective cover 221 can move up and down in the cavity 217 to change the volume inside and outside the cavity 217 so as to provide a release space for pressure; the elastic body is made of a compression spring 222, a soft material or a rubber material, and the like, and provides a reverse acting force for the resetting of the protective cover 221, so that the volume inside and outside the cavity 217 can be changed, and a release space is provided for pressure.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A crack prevention thermostatic valve core comprises a temperature regulating unit and an anti-freezing unit arranged on the downstream of the temperature regulating unit, wherein the anti-freezing unit comprises a base fixedly connected with the temperature regulating unit and a movable assembly arranged in the base; the constant temperature valve core is characterized in that the base is provided with a cavity for accommodating the movable assembly, the movable assembly is abutted to the opening of the cavity under the action of a pretightening force, the movable assembly is compressed in the cavity in the pretightening force direction to move so as to provide a pressure release space for a body matched with the constant temperature valve core to be used under the action of high pressure, and the movable assembly resets after the high pressure disappears.

2. The anti-frost-crack thermostatic valve cartridge of claim 1, wherein the movable assembly comprises a protective cover movably disposed in the cavity and an elastic body disposed above the protective cover, the protective cover moves up and down in the cavity, and the elastic body is pushed by the protective cover to compress upward or reset by the elastic body to push the protective cover to move downward.

3. The frost crack prevention thermostatic cartridge of claim 2, wherein the elastic body is a compression spring or a compressible body.

4. The freeze-crack resistant thermostatic cartridge of claim 3, wherein the compressible body is a soft material.

5. The antifreeze thermostatic cartridge of any one of claims 1 to 4, wherein the base comprises an outer ring body, an inner ring body disposed inside the outer ring body, and a connecting body connecting the outer ring body and the inner ring body, wherein the lower end surfaces of the outer ring body and the inner ring body and the lower end surface of the connecting body form the cavity; the inner ring body is provided with a through hole in a vertically through way.

6. The frost crack prevention thermostatic valve cartridge of claim 5, wherein a pressure relief hole is disposed on a side of the outer ring body adjacent to the connector, and the pressure relief hole is communicated with the cavity.

7. The frost crack prevention thermostatic valve cartridge of claim 6, wherein the upper end portions of the outer and inner rings, the upper end surface of the connecting body, and the lower end surface of the plunger form a receiving chamber, and a working spring is disposed in the receiving chamber.

8. The anti-frost-crack thermostatic valve cartridge according to claim 7, wherein the temperature adjustment unit comprises a housing, an adjustment assembly arranged in the housing, a plunger arranged below the adjustment assembly, and a thermal element penetrating through the plunger, and the adjustment assembly is adjusted up and down in the housing to move the thermal element up and down to move the plunger up and down to adjust a cold-hot water inlet ratio, so as to adjust a water outlet temperature of the thermostatic valve cartridge.

9. The frost crack prevention thermostatic valve element according to claim 8, wherein the housing has a through cavity with an upper opening and a lower opening, and a first water inlet and a second water inlet which are arranged on the side wall of the housing and communicated with the through cavity, and the first water inlet and the second water inlet are arranged in an up-and-down corresponding manner; the plunger is movably arranged between the first water inlet and the second water inlet, and the thermosensitive element moves up and down to push the plunger to move up and down, so that the water inflow of the first water inlet and the second water inlet is changed.

10. The frost crack prevention thermostatic cartridge of claim 9, wherein the plunger has a connecting post, an outer wall surface disposed outside the connecting post, and a connecting surface connecting the connecting post and the outer wall surface, and a plurality of water through holes are formed through the connecting surface, and water flows from the first water inlet to the through hole and/or from the second water inlet to the through hole respectively.