CN223203834U - Valve device and water supply equipment - Google Patents

Abstract

The present invention belongs to the technical field of water supply equipment, and specifically discloses a valve device and a water supply equipment. The valve body assembly of the valve device has a first port connected to a hot water channel, a second port connected to a cold water channel, and a valve cavity connected to the first port and the second port, and a conducting port is provided in the valve cavity; the valve core assembly includes a valve core axially movably installed in the valve cavity, a sealing member and a temperature regulating member both connected to the valve core, and the sealing member is used to open or block the conducting port; the temperature regulating member can change the deformation force acting on the valve core according to the fluid temperature of the first port; when the fluid temperature is lower than the preset temperature, the fluid pressure of the first port can enable the valve core to overcome the deformation force and make the conducting port conducting; when the fluid temperature is higher than the preset temperature, the sealing member blocks the conducting port. The valve device disclosed by the present invention has both unidirectional conduction and temperature sensing functions, reduces processing costs, and does not have a complex piping system, thereby reducing costs and improving the reliability of the water supply equipment.

Description

Valve device and water supply equipment

Technical Field

The utility model relates to the technical field of water supply equipment, in particular to a valve device and water supply equipment.

Background

The zero cold water function of the water heater is that low-temperature cold water in a hot water channel is preheated to the temperature set by a user, when the user needs to use hot water, the water heater can be used immediately without waiting for the cold water discharge, and the comfort level of the user can be improved while the water is saved.

At present, the zero cold water function is mainly realized in two modes, namely, a water return pipe is arranged on a hot water channel, residual cold water in the hot water channel is pumped back to a heating liner for heating through a circulating pump, and a water return valve structure is arranged at a remote water point, so that the hot water channel is communicated with the cold water channel in one way, and cold water in the hot water channel is pumped back to the heating liner for heating through the circulating pump. The existing water return valve structure generally comprises a temperature control element and a one-way valve, wherein the temperature control element detects the water temperature in a hot water channel, the one-way valve is controlled to be conducted when the water temperature in the hot water channel is too low, and cold water with lower temperature in the hot water channel flows into a cold water channel and flows back to a heating liner to be heated and then circularly enters the hot water channel. The water return valve is complex in structure, a one-way valve and a temperature control element are required to be arranged at the same time, and cost is high.

Disclosure of utility model

The first technical problem to be solved by the utility model is to provide a valve device which can solve the problems of complex structure and high cost caused by the fact that a temperature control element and a one-way valve are required to be arranged in the existing water return valve structure.

The second technical problem to be solved by the utility model is to provide a water supply device which is provided with a valve device capable of solving the problems of complex structure and high cost of the existing water return valve structure.

The first technical problem is solved by the following technical scheme:

there is provided a valve device comprising:

The valve body assembly is provided with a first port, a second port and a valve cavity communicated between the first port and the second port, wherein the first port is used for communicating a hot water channel, the second port is used for communicating a cold water channel, and a conducting port is arranged in the valve cavity;

The valve core assembly comprises a valve core, a plugging piece and a temperature adjusting piece, wherein the plugging piece and the temperature adjusting piece are connected to the valve core, the valve core can be axially movably installed in the valve cavity, the plugging piece is used for opening or plugging the conducting port, the temperature adjusting piece is located at the first port and can change deformation force acting on the valve core according to the fluid temperature of the first port, when the fluid temperature is lower than a preset temperature, the fluid pressure of the first port can enable the valve core to overcome the deformation force to conduct the conducting port, and when the fluid temperature is higher than the preset temperature, the plugging piece is used for plugging the conducting port.

Compared with the background technology, the valve device has the beneficial effects that under the normal state, the plugging piece plugs the conducting port under the action of the deformation force of the temperature adjusting piece, and water cannot flow from the second port to the first port, so that the one-way valve function is realized. The temperature regulating part is positioned at the first port, when the temperature of fluid in the hot water channel changes, the deformation force of the temperature regulating part is different, the acting force born by the plugging part is the resultant force of the fluid pressure in the first port and the deformation force exerted by the temperature regulating part, the directions of the fluid pressure and the deformation force are opposite, the fluid pressure direction is directed to the second port from the first port, and the deformation force is directed to the first port from the second port. When the temperature of the fluid is lower than the preset temperature, the deformation force of the temperature regulating element is reduced, so that the fluid pressure in the first port is larger than the deformation force of the temperature regulating element, the conducting port is conducted, and when the temperature of the fluid is higher than the preset temperature, the fluid pressure in the first port is insufficient to overcome the deformation force, and therefore the plugging element plugs the conducting port. The valve core component has the functions of unidirectional conduction and temperature control valve opening, so that the structure is simplified, and the processing cost is reduced.

In one embodiment, the temperature adjusting member is a memory spring, the stiffness coefficient of the memory spring is positively correlated with the fluid temperature, and in an initial state, the memory spring is in a compressed state to generate the deformation force, and the deformation force always has a tendency of driving the valve core to axially move so as to enable the plugging member to move towards the direction of plugging the conducting port.

In one embodiment, the valve core assembly further comprises a base and a baffle, the base is installed in the valve cavity, the valve core can axially movably penetrate through the base, the baffle is fixed on the valve core, the temperature adjusting piece is sleeved on the valve core, two ends of the temperature adjusting piece are respectively connected with the base and the baffle, the baffle and the plugging piece are respectively located on two sides of the base, and the base is provided with an axially penetrating water through hole.

In one embodiment, the valve core comprises an adjusting piece and a main shaft body which are coaxially arranged, one of the adjusting piece and the main shaft body is provided with an adjusting screw hole, the other one of the adjusting piece and the main shaft body is provided with a screw rod section which is in threaded connection with the adjusting screw hole, an adjusting gap is reserved between the screw rod section and the bottom of the adjusting screw hole, the baffle is arranged on the adjusting piece, the plugging piece is arranged on the main shaft body, and the main shaft body can axially movably penetrate through the base.

In one embodiment, the valve core is provided with a guide support member, the guide support member is axially movably arranged in the valve cavity, the periphery of the guide support member is abutted against the inner cavity wall of the valve cavity, and the guide support member is provided with a water guide channel which is axially penetrated and arranged.

In one embodiment, the valve core is provided with a guide support member, the guide support member is axially movably arranged in the valve cavity, the periphery of the guide support member is abutted against the inner cavity wall of the valve cavity, and the guide support member is provided with a water guide channel which is axially penetrated and arranged.

In one embodiment, the valve device further comprises a hot water tee joint and a cold water tee joint, wherein the hot water tee joint is used for connecting the hot water channel, the cold water tee joint is used for connecting the cold water channel, the hot water tee joint comprises a hot water inlet, a hot water outlet and a first circulation port which are mutually communicated, the cold water tee joint comprises a cold water inlet, a cold water outlet and a second circulation port which are mutually communicated, the hot water tee joint and the cold water tee joint are both connected to the valve body assembly, the first port is communicated with the first circulation port, the second port is communicated with the second circulation port, and the first circulation port is connected with the second circulation port to form the valve cavity.

In one embodiment, a first guide groove is arranged in the hot water three-way joint, a second guide groove is arranged in the cold water three-way joint, two ends of the valve core are respectively movably arranged in the first guide groove and the second guide groove in a penetrating mode, and when the plugging piece opens the conducting port, the bottom of the second guide groove abuts against the end portion of the valve core to limit the axial movement of the valve core.

In one embodiment, the valve device further comprises an elastic reset piece, the elastic reset piece is sleeved outside the valve core, and the elastic reset piece always has a trend of driving the valve core to axially move so that the plugging piece moves towards the direction of plugging the conducting port.

The second technical problem is solved by the following technical scheme:

There is provided a water supply apparatus, a water heater, and a hot water passage and a cold water passage connected to the water heater, respectively, further comprising a valve device as described above, the hot water passage communicating with a first port of the valve device, and the cold water passage communicating with a second port of the valve device.

Compared with the background technology, the water supply equipment has the advantages that the temperature regulating part of the valve device can change the deformation force acting on the valve core according to the change of the fluid temperature of the first port, when the fluid temperature is lower than the preset temperature, the deformation force of the temperature regulating part is reduced, so that the fluid pressure in the first port is higher than the deformation force of the temperature regulating part, the conducting port is conducted unidirectionally, and when the fluid temperature is higher than the preset temperature, the fluid pressure in the first port is insufficient to overcome the deformation force, so that the blocking part blocks the conducting port, and water cannot flow from the second port to the first port, thereby realizing the one-way valve function. The valve device has the functions of one-way conduction and temperature sensing, reduces the processing cost, has no complex pipeline system, simplifies the pipeline structure of the water supply equipment, and improves the reliability of the water supply equipment.

Drawings

FIG. 1 is a cross-sectional view of a valve device according to a first embodiment of the present utility model when closed;

FIG. 2 is a cross-sectional view of a valve device according to a first embodiment of the present utility model in a conducting state;

FIG. 3 is a schematic structural diagram of a valve core assembly according to a first embodiment of the present utility model;

fig. 4 is a schematic diagram illustrating a disassembled structure of a valve core assembly according to a first embodiment of the present utility model;

FIG. 5 is a schematic illustration showing a valve assembly according to an embodiment of the present utility model;

FIG. 6 is a cross-sectional view showing a valve device according to a second embodiment of the present utility model;

FIG. 7 is a cross-sectional view of a valve device according to a second embodiment of the present utility model;

FIG. 8 is a second cross-sectional view of a valve device according to a second embodiment of the present utility model when closed;

FIG. 9 is a second cross-sectional view of a valve device according to a second embodiment of the present utility model;

fig. 10 is a schematic structural diagram of a valve core assembly according to a second embodiment of the present utility model;

FIG. 11 is a schematic diagram of a knob according to a second embodiment of the present utility model;

Fig. 12 is a schematic structural view of a water supply apparatus according to a third embodiment of the present utility model.

Description of the reference numerals:

1. Valve body assembly, 10, rotation limiting groove, 11, first port, 12, second port, 13, valve cavity, 14, conducting port, 15, first guide groove, 16, second guide groove, 17, valve cover, 171, adjusting hole, 18, first shell, 19, second shell;

2. The valve comprises a valve core assembly, a valve core, 211, an adjusting piece, 212, a main shaft body, 2121, an adjusting screw hole, 22, a plugging piece, 23, a temperature adjusting piece, 24, a base, 241, a water through hole, 25, a baffle, 26, a guide supporting piece, 261 and a water guide channel;

3. The device comprises an adjusting knob, 31, a matching hole, 4, a hot water three-way joint, 41, a hot water inlet, 42, a hot water outlet, 5, a cold water three-way joint, 51, a cold water inlet, 52, a cold water outlet, 6, an elastic reset piece, 7, a clamp spring, 8 and a sealing ring;

100. Hot water channel, 200, cold water channel, 300, water heater.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" and "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1 to 5, an embodiment of the present utility model first provides a valve device including a valve body assembly 1 and a valve cartridge assembly 2. The valve body assembly 1 is provided with a first port 11, a second port 12 and a valve cavity 13 communicated between the first port 11 and the second port 12, wherein the first port 11 is used for being communicated with the hot water channel 100, the second port 12 is used for being communicated with the cold water channel 200, and a conducting port 14 is arranged in the valve cavity 13. The valve core assembly 2 comprises a valve core 21, a blocking piece 22 and a temperature regulating piece 23, wherein the blocking piece 22 and the temperature regulating piece 23 are both connected to the valve core 21, the valve core 21 can be axially movably arranged in the valve cavity 13, the blocking piece 22 is used for opening or blocking the conducting port 14, when the blocking piece 22 opens the conducting port 14, one-way conduction is realized between the first port 11 and the second port 12, and only fluid is allowed to flow from the hot water channel 100 to the cold water channel 200. The temperature adjusting member 23 is located at the first port 11, and the temperature adjusting member 23 is capable of changing a deformation force acting on the valve element 21 according to a fluid temperature of the first port 11, and the deformation force is capable of driving the valve element 21 to move in an axial direction. Under normal state, under the deformation force of the temperature adjusting piece 23, the sealing piece 22 seals the conducting port 14, and water cannot flow from the second port 12 to the first port 11, so that the one-way valve function is realized. When the temperature of the fluid in the hot water passage 100 changes, the changing fluid temperature causes the temperature adjusting member 23 to generate different deformation forces. The force applied by the blocking member 22 is the resultant of the fluid pressure in the first port 11 and the deformation force applied by the temperature adjusting member 23, which are opposite in direction, and the fluid pressure is directed from the first port 11 to the second port 12, and the deformation force is directed from the second port 12 to the first port 11. When the fluid temperature is lower than the preset temperature, the fluid pressure of the hot water channel 100 can overcome the deformation force to enable the conduction port 14 to be conducted, and when the fluid temperature is higher than the preset temperature, the fluid pressure of the hot water channel 100 is insufficient to overcome the deformation force, so that the plugging piece 22 plugs the conduction port 14. The valve device has the functions of unidirectional conduction and temperature sensing, simplifies the structure, reduces the processing cost, has no complex pipeline system and is convenient to install.

The temperature adjusting member 23 is a memory spring, the stiffness coefficient of which is positively correlated with the fluid temperature, and in the initial state, the memory spring is in a compressed state to generate a deformation force, and the deformation force always has a tendency to drive the valve core 21 to axially move so as to move the blocking member 22 toward the blocking port 14. The memory spring is made of shape memory alloy, the working state of the temperature regulating member 23 is divided into a soft phase and a hard phase by utilizing the characteristic of the memory spring, the temperature regulating member 23 is in the soft phase state when the fluid temperature of the first port 11 is low, the stiffness coefficient of the temperature regulating member 23 is small, the spring force generated by stretching and compression is small, when the temperature of the first port 11 is increased, the memory spring is gradually changed from the soft phase to the hard phase, the stiffness coefficient of the temperature regulating member 23 is increased, and the spring force generated by the memory spring with the same compression amount is correspondingly increased, namely the deformation force of the valve core 21 driven by the temperature regulating member 23. The temperature adjusting member 23 in the initial state is in a compressed state, so that the elastic force generated by the compression can be utilized as the deformation force for driving the valve body 21.

The valve core assembly 2 further comprises a base 24 and a baffle plate 25, the base 24 is arranged in the valve cavity 13, the valve core 21 can axially movably penetrate through the base 24, the baffle plate 25 is fixed on the valve core 21, the valve core 21 provides guidance for the temperature regulating piece 23, the temperature regulating piece 23 is sleeved on the valve core 21, two ends of the temperature regulating piece are respectively connected with the base 24 and the baffle plate 25, and the baffle plate 25 and the plugging piece 22 are respectively positioned on two sides of the base 24. The baffle 25 and the base 24 limit the position of the temperature adjusting member 23. The base 24 is embedded in the valve cavity 13, and the baffle 25 and the blocking piece 22 are respectively located at two sides of the base 24, so that the temperature adjusting piece 23 is located at one side of the first port 11. The base 24 and the valve cavity 13 can be mounted through interference fit, so that the mounting is simpler. The base 24 is provided with a water through hole 241 penetrating in the axial direction, so that the fluidity of the fluid in the valve cavity 13 is ensured.

After the base 24 is installed in the valve cavity 13, the memory spring serving as the temperature adjusting member 23 is always in a compressed state, and the valve device is defined to be in an initial state when the plugging member 22 opens the conducting port 14, at this time, the temperature adjusting member 23 is in a soft phase, the deformation force is small, and the deformation force is smaller than the fluid pressure in the hot water channel 100, so that the plugging member 22 is far away from the conducting port 14 and faces to one side of the second port 12, and the valve device is conducted. When the temperature of the fluid in the hot water channel 100 increases, the temperature adjusting member 23 is changed from the soft phase to the hard phase, the stiffness coefficient of the memory spring is gradually increased, the deformation force of the memory spring is gradually increased under the same compression amount, and when the temperature increases to T1, the deformation force of the memory spring is increased enough to overcome the pressure of the fluid in the hot water channel 100, so that the blocking member 22 blocks the conducting port 14, and the valve device is in a closed state. The temperature T1 at this time is defined as a preset temperature, and when the temperature is lower than the preset temperature, the valve device is turned on unidirectionally, and when the temperature is higher than the preset temperature, the valve device is turned off.

The valve core 21 is provided with a guide support member 26, the guide support member 26 is axially movably arranged in the valve cavity 13, the periphery of the guide support member 26 is abutted against the inner cavity wall of the valve cavity 13, and the guide support member 26 is provided with a water guide channel 261 which is axially penetrated and opened, as shown in fig. 3 and 4. The guide support 26 can provide radial support to avoid the clamping stagnation caused by the deflection of the valve core 21 in the axial movement process, so that the movement of the valve core 21 is smoother. The water guide passage 261 can ensure the smoothness of the fluid, which can flow from the hot water passage 100 to the cold water passage 200 through the valve chamber 13.

Illustratively, as shown in fig. 3 and 4, the guide support 26 is a quincuncial structure, with convex petals for abutting against the inner cavity wall of the valve cavity 13, and gaps between adjacent petals form water guide channels 261 for fluid passage.

In order to achieve the quick connection with the hot water channel 100 and the cold water channel 200, the valve device further comprises a hot water tee joint 4 and a cold water tee joint 5, wherein the hot water tee joint 4 is used for connecting the hot water channel 100, the cold water tee joint 5 is used for connecting the cold water channel 200, the hot water tee joint 4 comprises a hot water inlet 41, a hot water outlet 42 and a first circulation port which are mutually communicated, the cold water tee joint 5 comprises a cold water inlet 51, a cold water outlet 52 and a second circulation port which are mutually communicated, the hot water tee joint 4 and the cold water tee joint 5 are connected to the valve body assembly 1, the first port 11 is communicated with the first circulation port, and the second port 12 is communicated with the second circulation port to form an H-shaped structure, as shown in fig. 5. When the temperature of the fluid in the hot water passage 100 is low, the valve means is opened, and the fluid enters the valve chamber 13 through the first circulation port and flows into the cold water passage 200 through the second circulation port. The liquid in the cold water passage 200 can flow back into the water heater 300 and circulate into the hot water passage 100 after being preheated.

In order to simplify assembly and processing of the valve device, the valve body assembly 1 comprises a first housing 18 and a second housing 19, the first housing 18 and the second housing 19 are detachably connected to enclose a valve cavity 13, a first port 11 and a communication port 14 are arranged on the first housing 18, and a second port 12 is arranged on the second housing 19. The first shell 18 and the hot water three-way joint 4 are integrally formed, and the second shell 19 and the cold water three-way joint 5 are integrally formed. The first and second circulation ports are not labeled in the drawings, because in the case of integral formation, the first port 11 and the first circulation port are in direct communication, the second port 12 and the second circulation port are in direct communication, and the first circulation port and the second circulation port are connected to form the valve chamber 13. The structure is simplified on the one hand, on the other hand, the assembly is convenient, the first shell 18, the hot water three-way joint 4, the second shell 19 and the cold water three-way joint 5 are respectively arranged at two ends of the valve core 21, and the plugging piece 22 is positioned at one side of the conducting port 14 towards the second port 12 while the first shell 18 and the second shell 19 are surrounded to form the valve cavity 13.

The hot water tee joint 4 is internally provided with a first guide groove 15, the cold water tee joint 5 is internally provided with a second guide groove 16, and two ends of the valve core 21 are respectively movably penetrated in the first guide groove 15 and the second guide groove 16. When the blocking piece 22 opens the through-hole 14, the bottom of the second guide groove 16 abuts the end of the spool 21 to restrict the spool 21 from moving axially. The first guide groove 15 and the second guide groove 16 provide guide for the axial movement of the valve core 21, so that torsion is avoided in the movement process of the valve core 21, and the movement stability of the valve core 21 is maintained. In addition, the second guide groove 16 has an axial limiting function, when the blocking piece 22 is far away from the conducting port 14 to enable the valve device to conduct unidirectionally, the end portion of the valve core 21 can be abutted against the bottom of the second guide groove 16, and the abutment limiting function of the second guide groove 16 can prevent the axial movement distance of the valve core 21 from being too large due to larger fluid pressure.

The valve device further comprises an elastic reset piece 6, the elastic reset piece 6 is sleeved outside the valve core 21, and the elastic reset piece 6 always has a trend of driving the valve core 21 to axially move so that the blocking piece 22 moves towards the blocking conducting port 14. The elastic restoring member 6 is exemplified by a compression spring, the compression spring is sleeved outside the valve core 21, one end of the compression spring is abutted against the inner wall of the cold water three-way joint 5, the elastic restoring member 6 applies an elastic force directed to the first port 11 from the second port 12 to the valve core 21, and the valve core 21 can be pushed to drive the blocking member 22 to move towards the direction of the blocking conducting port 14. Under the action of the elastic restoring element 6, on the one hand, a reliable closing of the valve device can be ensured, and the situation that the temperature regulating element 23 cannot be normally closed when the deformation degree is insufficient to overcome the fluid pressure is prevented. On the other hand, in the state that the user uses the cold water channel 200 to discharge cold water, if the water pressure in the cold water channel 200 is low and the fluid temperature in the hot water channel 100 is also relatively low, the deformation force of the temperature adjusting member 23 is small and insufficient to overcome the fluid pressure in the hot water channel 100, and at this time, the condition that fluid enters the cold water channel 200 from the hot water channel 100 easily occurs, which affects the normal cold water discharge of the cold water channel 200. Under the action of the elastic force of the elastic reset piece 6, the occurrence of the above situation can be avoided, the elastic force of the elastic reset piece 6 and the deformation force of the temperature adjusting piece 23 are in the same direction, and the elastic force and the deformation force of the temperature adjusting piece are overlapped together to overcome the fluid pressure in the hot water channel 100, so that the valve device is kept in a closed state. Of course, when the fluid temperature of the first port 11 is reduced to be lower than the preset temperature, and the hot water channel 100 is in a hot water state, the fluid pressure of the first port 11 can overcome the elastic force of the elastic reset element 6 and the deformation force of the temperature adjusting element 23, so that the conduction port 14 is normally conducted to ensure the backflow of the fluid. The valve body assembly 1 further comprises a valve cover 17, an outlet communicated with the first port 11 is formed in the hot water three-way joint 4, and the valve cover 17 is arranged at the outlet. The valve cover 17 is arranged on the hot water three-way joint 4 through a fastener, and the valve core assembly 2 can be quickly taken out from the valve cavity 13 for overhauling after the valve cover 17 is disassembled. Accordingly, the first guide groove 15 is provided on the valve cover 17.

In order to ensure the tightness of the valve body assembly 1, the valve device further comprises a clamp spring 7 and a sealing ring 8, and the first shell 18 is inserted into the second shell 19, or the second shell 19 is inserted into the first shell 18. Illustratively, the second housing 19 is inserted into the first housing 18, and the seal ring 8 is sleeved outside the second housing 19 and between the second housing 19 and the first housing 18 to seal a gap between the second housing 19 and the first housing 18. The clamp spring 7 is used for connecting the second shell 19 and the first shell 18, and the assembly mode is simple.

Example two

A second embodiment of the present utility model provides a valve device having the same valve body assembly 1 and valve element assembly 2 as in the first embodiment, as shown in fig. 6 to 11. The valve body assembly 1 is provided with a first port 11, a second port 12 and a valve cavity 13 communicated between the first port 11 and the second port 12, wherein the first port 11 is used for being communicated with the hot water channel 100, the second port 12 is used for being communicated with the cold water channel 200, and a conducting port 14 is arranged in the valve cavity 13. The valve core assembly 2 comprises a valve core 21, a blocking piece 22 and a temperature regulating piece 23, wherein the blocking piece 22 and the temperature regulating piece 23 are both connected to the valve core 21, the valve core 21 can be axially movably arranged in the valve cavity 13, the blocking piece 22 is used for opening or blocking the conducting port 14, when the blocking piece 22 opens the conducting port 14, one-way conduction is realized between the first port 11 and the second port 12, and only fluid is allowed to flow from the hot water channel 100 to the cold water channel 200. The temperature regulating piece 23 is located at the first port 11, the temperature regulating piece 23 can deform according to the fluid temperature of the first port 11 and drive the valve core 21 to move axially through deformation force, and the moving valve core 21 drives the plugging piece 22 to move towards the plugging conducting port 14. When the temperature of the fluid in the hot water channel 100 changes, the temperature of the fluid changes to make the temperature adjusting piece 23 deform differently, and different deformation forces are generated. The force applied by the blocking piece 22 is the resultant force of the fluid pressure applied by the hot water channel 100 and the deformation force applied by the temperature regulating piece 23, the directions of the fluid pressure are opposite, the direction of the fluid pressure is directed to the second port 12 from the first port 11, and the deformation force is directed to the first port 11 from the second port 12. When the fluid temperature is lower than the preset temperature, the fluid pressure of the hot water channel 100 can overcome the deformation force to enable the conduction port 14 to conduct unidirectionally, and when the fluid temperature is higher than the preset temperature, the fluid pressure of the hot water channel 100 is insufficient to overcome the deformation force, so that the blocking piece 22 blocks the conduction port 14.

The second embodiment is different in that the valve core 21 includes an adjusting member 211 and a main shaft body 212 coaxially disposed, one of the adjusting member 211 and the main shaft body 212 is provided with an adjusting screw hole 2121, the other one has a screw section, the screw section is screwed to the adjusting screw hole 2121, an adjusting gap is formed between the screw section and the bottom of the adjusting screw hole 2121, and axial relative movement can be generated between the screw section and the adjusting screw hole 2121. The baffle 25 is fixed on the adjusting member 211, the blocking member 22 is mounted on the main shaft body 212, and the main shaft body 212 is axially movably arranged on the base 24 in a penetrating manner.

Illustratively, an end of the main shaft body 212 facing the first port 11 is provided with an adjusting screw hole 2121, and an end of the adjusting member 211 is provided with a screw section screwed into the adjusting screw hole 2121. When the base 24 is embedded in the valve cavity 13, the adjusting piece 211 is rotated, the baffle 25 moves along with the axial movement of the adjusting piece 211, and the main shaft body 212 and the base 24 are kept still, so that the purpose of adjusting the distance between the baffle 25 and the base 24 is achieved. The initial deformability, i.e. the compression, of the thermostatic element 23 is determined by the distance between the baffle 25 and the seat 24. When the distance between the baffle 25 and the base 24 is increased, the initial deformation degree of the temperature adjusting member 23 becomes smaller, that is, the compression amount of the temperature adjusting member 23 becomes smaller, and accordingly, when the valve device is in the closed state, the compression amount of the memory spring becomes smaller, so that the fluid temperature in the hot water channel 100 needs to be higher in order to enable the memory spring to generate the deformation force with the same magnitude to realize the axial movement of the blocking member 22 to the blocking conducting port 14, and the stiffness coefficient of the memory spring becomes larger, so that the elastic force with the same magnitude can be obtained. As shown in fig. 6 and 7, which show the distance between the shutter 25 and the base 24 before adjustment, and fig. 8 and 9, which show the case where the distance between the shutter 25 and the base 24 is increased.

Therefore, the preset temperature of the valve device can be adjusted by adjusting the distance between the baffle 25 and the base 24, and the larger the distance between the baffle 25 and the base 24 is, the higher the preset temperature of the valve device is. Therefore, different water temperature requirements of users are met, when the water outlet temperature requiring the zero cold water function is higher, the distance between the baffle plate 25 and the base 24 is increased to reduce the compression amount of the memory spring, and when the water outlet temperature requiring the zero cold water function is reduced, the distance between the baffle plate 25 and the base 24 is reduced to increase the compression amount of the memory spring.

The valve body assembly 1 further comprises a valve cover 17, an outlet communicated with the first port 11 is formed in the hot water three-way joint 4, and the valve cover 17 is arranged at the outlet. The valve cover 17 is provided with a through adjusting hole 171, the valve device further comprises an adjusting knob 3, one end of the adjusting knob 3 is connected to the adjusting member 211, and the other end of the adjusting knob 3 rotatably passes through the adjusting hole 171 to extend out of the valve cavity 13, so that a user can conveniently adjust the preset temperature from the outer side of the valve device through the adjusting knob 3. The end of the adjusting knob 3 located in the valve cavity 13 is provided with a matching hole 31, the valve body assembly 1 is further provided with a limited rotation groove 10 in the valve cavity 13, one end of the adjusting piece 211 away from the main shaft body 212 is inserted into the matching hole 31, and the adjusting knob 3 is configured to drive the adjusting piece 211 to rotate. An end of the main shaft body 212 remote from the adjusting member 211 is axially movably inserted into the rotation limiting groove 10, and the rotation limiting groove 10 is configured to restrict the main shaft body 212 from rotating about its own axis. Thus, when the adjusting knob 3 drives the adjusting piece 211 to rotate, the main shaft body 212 is restrained by the rotation limiting groove 10 and cannot rotate, the main shaft body 212 is guaranteed not to rotate along with the rotation, and the screw rod section can rotate in the adjusting screw hole 2121, so that the axial position change between the adjusting piece 211 and the main shaft body 212 is realized.

In order to improve the reliability of the rotation of the adjusting member 211 by the adjusting knob 3, as shown in fig. 10 and 11, the end of the adjusting member 211 is a hexahedral prism, and the other end of the main shaft body 212 remote from the adjusting member 211 is also a hexahedral prism, the cross-sectional shape of the mating hole 31 is adapted to the hexahedral prism, and the cross-sectional shape of the rotation limiting groove 10 is also adapted to the hexahedral prism. The hexahedral prism of the adjusting member 211 is inserted into the fitting hole 31 of the adjusting knob 3, the hexahedral prism of the main shaft body 212 is inserted into the rotation limiting groove 10, and an accommodating gap is provided between the hexahedral prism of the adjusting member 211 and the bottom of the fitting hole 31. Thus, the knob is adjusted to the knob 3, the adjusting knob 3 can drive the adjusting piece 211 to rotate, the main shaft body 212 is kept static under the constraint of the rotation limiting groove 10, and relative rotation occurs between the screw section and the adjusting screw hole 2121, so that the adjusting piece 211 moves in the axial direction. Moreover, the six prisms at the end part of the adjusting piece 211 and the matching hole 31 of the adjusting knob 3 are in non-interference fit, the adjusting piece 211 can axially move in the matching hole 31 while rotating, and the accommodating gap provides space for the axial movement of the adjusting piece 211, so that the adjusting knob 3 only needs to rotate, and the axial position movement can not be generated, so that the valve body component 1 is prevented from being excessively protruded, the occupied axial space is reduced, and the restriction of a narrow space is avoided.

In other embodiments, the end of the adjusting member 211 and the other end of the main shaft body 212 may be configured as prisms with other cross-sectional shapes, such as triangular prisms, quadrangular prisms, etc., and only the matching hole 31 is required to be matched with the end of the adjusting member 211, and the rotation limiting groove 10 is required to be matched with the other end of the main shaft body 212, which is not limited by the drawings of the embodiment.

Example III

The embodiment of the present utility model further provides a water supply apparatus, as shown in fig. 12, where the water supply apparatus includes a water heater 300, and a hot water channel 100 and a cold water channel 200 that are in communication with the water heater 300, and further includes a valve device as in the first or second embodiment, and the hot water channel 100 is in communication with the first port 11 of the valve device, and the cold water channel 200 is in communication with the second port 12 of the valve device. A through hole 14 is provided in the valve chamber 13. The valve core assembly 2 comprises a valve core 21, a blocking piece 22 and a temperature regulating piece 23, wherein the blocking piece 22 and the temperature regulating piece 23 are both connected to the valve core 21, the valve core 21 can be axially movably arranged in the valve cavity 13, the blocking piece 22 is used for opening or blocking the conducting port 14, when the blocking piece 22 opens the conducting port 14, one-way conduction is realized between the first port 11 and the second port 12, and only fluid is allowed to flow from the hot water channel 100 to the cold water channel 200. The temperature adjusting piece 23 is located at the first port 11, the temperature adjusting piece 23 can generate different deformation forces according to the fluid temperature change of the first port 11, so as to drive the valve core 21 to move along the axial direction, and the moving valve core 21 can drive the plugging piece 22 to move towards the plugging conducting port 14. When the temperature of the fluid in the hot water channel 100 changes, the temperature of the fluid changes to make the temperature adjusting piece 23 deform differently, and different deformation forces are generated. The force applied by the blocking piece 22 is the resultant force of the fluid pressure applied by the hot water channel 100 and the deformation force applied by the temperature regulating piece 23, the directions of the fluid pressure are opposite, the direction of the fluid pressure is directed to the second port 12 from the first port 11, and the deformation force is directed to the first port 11 from the second port 12. Under the deformation force of the temperature adjusting piece 23 in a normal state, the plugging piece 22 plugs the conducting port 14, water cannot flow from the second port 12 to the first port 11 to realize the one-way valve function, when the fluid temperature is lower than the preset temperature, the fluid pressure of the hot water channel 100 can overcome the deformation force to enable the conducting port 14 to conduct unidirectionally, and when the fluid temperature is higher than the preset temperature, the fluid pressure of the hot water channel 100 is insufficient to overcome the deformation force, so that the plugging piece 22 plugs the conducting port 14. The valve device has the functions of one-way conduction and temperature sensing, reduces the processing cost, has no complex pipeline system, simplifies the pipeline structure of the water supply equipment, and improves the reliability of the water supply equipment.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing detailed description of the embodiments presents only a few embodiments of the present utility model, which are described in some detail and are not intended to limit the scope of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A valve apparatus, comprising:

The valve body assembly (1), the valve body assembly (1) is provided with a first port (11), a second port (12) and a valve cavity (13) communicated between the first port (11) and the second port (12), the first port (11) is used for being communicated with a hot water channel (100), the second port (12) is used for being communicated with a cold water channel (200), and a conducting port (14) is arranged in the valve cavity (13);

The valve core assembly (2) comprises a valve core (21), a blocking piece (22) and a temperature adjusting piece (23), wherein the blocking piece (22) and the temperature adjusting piece (23) are connected to the valve core (21), the valve core (21) can be axially movably installed in the valve cavity (13), the blocking piece (22) is used for opening or blocking the conducting port (14), the temperature adjusting piece (23) is located at the first port (11), the temperature adjusting piece (23) can change deformation force acting on the valve core (21) according to fluid temperature of the first port (11), when the fluid temperature is lower than the preset temperature, fluid pressure of the first port (11) can enable the valve core (21) to overcome the deformation force to enable the conducting port (14) to be conducted, and when the fluid temperature is higher than the preset temperature, the blocking piece (22) can block the conducting port (14).

2. Valve device according to claim 1, characterized in that the temperature regulating member (23) is a memory spring, the stiffness coefficient of which is positively correlated with the fluid temperature, which memory spring is in a compressed state in an initial state to generate the deformation force, which deformation force always has a tendency to drive the valve core (21) axially to move the closing member (22) in the direction of closing the through opening (14).

3. The valve device according to claim 2, characterized in that the valve core assembly (2) further comprises a base (24) and a baffle plate (25), the base (24) is installed in the valve cavity (13), the valve core (21) is axially movably arranged on the base (24) in a penetrating manner, the baffle plate (25) is fixed on the valve core (21), the temperature regulating piece (23) is sleeved on the valve core (21) and two ends of the temperature regulating piece are respectively connected with the base (24) and the baffle plate (25), the baffle plate (25) and the blocking piece (22) are respectively located on two sides of the base (24), and the base (24) is provided with a water through hole (241) which axially penetrates.

4. A valve device according to claim 3, characterized in that the valve core (21) comprises an adjusting member (211) and a main shaft body (212) which are coaxially arranged, one of the adjusting member (211) and the main shaft body (212) is provided with an adjusting screw hole (2121), the other is provided with a screw rod section which is in threaded connection with the adjusting screw hole (2121), an adjusting gap is arranged between the screw rod section and the bottom of the adjusting screw hole (2121), the baffle plate (25) is arranged on the adjusting member (211), the blocking member (22) is arranged on the main shaft body (212), and the main shaft body (212) can axially movably penetrate through the base (24).

5. The valve device according to claim 4, further comprising an adjusting knob (3), wherein the adjusting knob (3) rotatably penetrates through the valve body assembly (1) so that one end of the adjusting knob (3) extends out of the valve cavity (13), a matching hole (31) is formed in one end of the adjusting knob (3) located in the valve cavity (13), a limited rotation groove (10) is further formed in the valve cavity (13), one end of the adjusting piece (211) away from the main shaft body (212) is inserted into the matching hole (31), the adjusting knob (3) is configured to drive the adjusting piece (211) to rotate, one end of the main shaft body (212) away from the adjusting piece (211) is axially movably inserted into the limited rotation groove (10), and the limited rotation groove (10) is configured to restrict the main shaft body (212) to rotate around the self axis.

6. Valve device according to claim 1, characterized in that the valve core (21) is provided with a guide support (26), the guide support (26) is axially movably arranged in the valve cavity (13), the outer circumference of the guide support (26) abuts against the inner cavity wall of the valve cavity (13), and the guide support (26) is provided with a water guide channel (261) which is axially and penetratingly opened.

7. The valve device according to claim 1, further comprising a hot water tee joint (4) and a cold water tee joint (5), wherein the hot water tee joint (4) is used for connecting the hot water channel (100), the cold water tee joint (5) is used for connecting the cold water channel (200), the hot water tee joint (4) comprises a hot water inlet (41), a hot water outlet (42) and a first circulation port which are communicated with each other, the cold water tee joint (5) comprises a cold water inlet (51), a cold water outlet (52) and a second circulation port which are communicated with each other, the hot water tee joint (4) and the cold water tee joint (5) are connected to the valve body assembly (1), the first port (11) is communicated with the first circulation port, the second port (12) is communicated with the second circulation port, and the first circulation port and the second circulation port are connected to form the valve cavity (13).

8. Valve device according to claim 7, characterized in that a first guiding groove (15) is provided in the hot water three-way joint (4), a second guiding groove (16) is provided in the cold water three-way joint (5), two ends of the valve core (21) are respectively movably penetrated in the first guiding groove (15) and the second guiding groove (16), and when the sealing piece (22) opens the conducting port (14), the bottom of the second guiding groove (16) is abutted against the end part of the valve core (21) to limit the axial movement of the valve core (21).

9. Valve device according to any one of claims 1-8, characterized in that it further comprises an elastic return element (6), said elastic return element (6) being fitted over said valve element (21), said elastic return element (6) always having a tendency to drive said valve element (21) axially to move said blocking element (22) in a direction to block said through opening (14).

10. Water supply device comprising a water heater (300), and a hot water channel (100) and a cold water channel (200) connected to the water heater (300), respectively, characterized in that it further comprises a valve device according to any one of claims 1-9, the hot water channel (100) being in communication with a first port (11) of the valve device, the cold water channel (200) being in communication with a second port (12) of the valve device.