Valve device and water supply equipment

Abstract

The utility model belongs to the technical field of water supply equipment, and particularly discloses a valve device and water supply equipment. A valve body assembly of the valve device is provided with a first port communicated with the hot water channel, a second port communicated with the cold water channel and a valve cavity communicated with the first port and the second port, and a communication port is formed in the valve cavity. The valve element assembly comprises a valve element capable of being axially and movably installed in the valve cavity, a blocking piece and a temperature adjusting piece, wherein the blocking piece and the temperature adjusting piece are both connected to the valve element. The blocking piece is used for opening or blocking the communicating opening. The temperature adjusting piece can change deformation force acting on the valve element 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 element to overcome the deformation force so that the communication port can be communicated; when the fluid temperature is higher than the preset temperature, the blocking piece blocks the communicating opening. The valve device has the one-way conduction function and the temperature sensing function, the machining cost is reduced, no complex pipeline system exists, the cost is reduced, and the reliability of water supply equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply equipment, in particular to a valve device and water supply equipment. Background Art

[0002] The zero cold water function of the water heater is a technology that preheats the low-temperature cold water in the hot water channel to the temperature set by the user. When the user needs to use hot water, it can be used "instantly" without waiting for the cold water to be discharged. It can save water and improve user comfort.

[0003] Currently, the zero cold water function is achieved primarily through two methods: one is to arrange a return pipe in the hot water channel, and use a circulating pump to pump the remaining cold water in the hot water channel back to the heating tank for heating; the other is to install a return valve structure at a remote water point, connecting the hot water channel and the cold water channel in one direction, and use a circulating pump to pump the cold water in the hot water channel back to the heating tank for heating. Existing return valve structures generally include a temperature control element and a one-way valve. The temperature control element detects the water temperature in the hot water channel. When the water temperature in the hot water channel is too low, the one-way valve is controlled to conduct, and the cold water in the hot water channel with a lower temperature flows into the cold water channel and returns to the heating tank for heating before circulating into the hot water channel. This return valve structure is relatively complex, requiring the simultaneous installation of a one-way valve and a temperature control element, which is costly. Utility Model Content

[0004] The first technical problem solved by the present invention is to provide a valve device which can solve the problem that the existing return valve structure needs to be provided with a temperature control element and a one-way valve, resulting in a complex structure and high cost.

[0005] The second technical problem solved by the present invention is to provide a water supply device, the valve device of which can solve the problems of the existing return valve structure being complex and high in cost.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A valve device is provided, comprising:

[0008] A valve body assembly having a first port, a second port, and a valve cavity communicating between the first port and the second port, wherein the first port is used to communicate with a hot water channel, the second port is used to communicate with a cold water channel, and a conducting port is provided in the valve cavity;

[0009] A valve core assembly, the valve core assembly includes a valve core, a sealing member and a temperature regulating member all connected to the valve core, the valve core can be axially movably installed in the valve cavity, the sealing member is used to open or seal the conduction port; the temperature regulating member is located at the first port, and 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 to make the conduction port conductive; when the fluid temperature is higher than the preset temperature, the sealing member blocks the conduction port.

[0010] Compared with the background technology, the valve device described in the present invention has the following beneficial effects: under normal conditions, under the deformation force of the temperature regulating member, the blocking member blocks the conduction port, and water cannot flow from the second port to the first port, thereby realizing the one-way valve function. The temperature regulating member is located at the first port. When the temperature of the fluid in the hot water channel changes, the deformation force of the temperature regulating member is different. The force acting on the blocking member is the combined force of the fluid pressure in the first port and the deformation force applied by the temperature regulating member. The two are in opposite directions. The direction of the fluid pressure is from the first port to the second port, and the deformation force is from the second port to the first port. When the fluid temperature is lower than the preset temperature, the deformation force of the temperature regulating member decreases, so that the fluid pressure in the first port is greater than the deformation force of the temperature regulating member, and the conduction port is connected; 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 the blocking member blocks the conduction port. The valve core assembly has both one-way conduction and temperature-controlled valve opening functions, which simplifies the structure and reduces processing costs.

[0011] In one embodiment, the temperature regulating member is a memory spring, the spring coefficient of the memory spring is positively correlated with the fluid temperature, and in the initial state, the memory spring is in a compressed state to generate the deformation force, and the deformation force always has the tendency to drive the valve core to move axially so that the sealing member moves toward the direction of blocking the conducting port.

[0012] In one embodiment, the valve core assembly also includes a base and a baffle, the base is installed in the valve cavity, the valve core can be axially movably inserted into the base, the baffle is fixed on the valve core, the temperature adjustment component is sleeved on the valve core and the two ends are respectively connected to the base and the baffle, the baffle and the sealing component are respectively located on both sides of the base, and the base is provided with an axially penetrating water hole.

[0013] In one embodiment, the valve core includes a coaxially arranged adjusting member and a main shaft body, one of the adjusting member and the main shaft body is provided with an adjusting screw hole, and the other has a screw segment, and the screw segment is screwed into the adjusting screw hole; an adjusting gap is provided between the screw segment and the bottom of the adjusting screw hole, the baffle is installed on the adjusting member, and the sealing member is installed on the main shaft body, and the main shaft body can be axially movably passed through the base.

[0014] In one embodiment, a guide support is provided on the valve core, and the guide support can be axially movably provided in the valve cavity. The outer periphery of the guide support abuts against the inner cavity wall of the valve cavity, and the guide support has a water guide channel opened axially therethrough.

[0015] In one embodiment, a guide support is provided on the valve core, and the guide support can be axially movably provided in the valve cavity. The outer periphery of the guide support abuts against the inner cavity wall of the valve cavity, and the guide support has a water guide channel opened axially therethrough.

[0016] In one embodiment, the valve device also includes a hot water tee joint and a cold water tee joint, the hot water tee joint is used to connect the hot water channel, and the cold water tee joint is used to connect the cold water channel, the hot water tee joint includes a hot water inlet, a hot water outlet and a first circulation port that are interconnected, and the cold water tee joint includes a cold water inlet, a cold water outlet and a second circulation port that are interconnected, the hot water tee joint and the cold water tee joint are both connected to the valve body assembly, and the first port is connected to the first circulation port, and the second port is connected to the second circulation port; the first circulation port and the second circulation port are connected to form the valve cavity.

[0017] In one embodiment, a first guide groove is provided in the hot water tee joint, and a second guide groove is provided in the cold water tee joint. The two ends of the valve core are movably inserted into the first guide groove and the second guide groove respectively. When the sealing member opens the conducting port, the bottom of the second guide groove abuts against the end of the valve core to limit the axial movement of the valve core.

[0018] In one embodiment, the valve device further includes an elastic reset member, which is sleeved outside the valve core. The elastic reset member always has the tendency to drive the valve core to move axially so that the blocking member moves toward blocking the conducting port.

[0019] The second technical problem mentioned above is solved by the following technical solution:

[0020] Provided is a water supply device, a water heater, and a hot water channel and a cold water channel respectively connected to the water heater, and also includes a valve device as described above, the hot water channel is connected to the first port of the valve device, and the cold water channel is connected to the second port of the valve device.

[0021] Compared with the background technology, the water supply equipment described in the present invention has the following beneficial effects: the temperature adjustment member 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 adjustment member is reduced, so that the fluid pressure in the first port is greater than the deformation force of the temperature adjustment member, and the conduction port is one-way; when the fluid temperature is higher than the preset temperature, the fluid pressure in the first port is not enough to overcome the deformation force, so the blocking member blocks the conduction port, and water cannot flow from the second port to the first port, thereby realizing the one-way valve function. The valve device has both one-way conduction and temperature sensing functions, reduces processing costs, and does not have a complex piping system, simplifies the piping structure of the water supply equipment, and improves the reliability of the water supply equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A cross-sectional view of the structure of the valve device provided in Example 1 of the present utility model when closed;

[0023] Figure 2 A cross-sectional view of the structure of the valve device provided in the first embodiment of the present invention when it is in conduction;

[0024] Figure 3 A schematic structural diagram of the valve core assembly provided in Example 1 of the present utility model;

[0025] Figure 4 A schematic diagram of the disassembly of the structure of the valve core assembly provided in the first embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the disassembled structure of the valve body assembly provided in the first embodiment of the present invention;

[0027] Figure 6 The cross-sectional view of the valve device provided in the second embodiment of the present invention when closed Figure 1 ;

[0028] Figure 7 The cross-sectional view of the valve device provided in the second embodiment of the present invention when it is turned on Figure 1 ;

[0029] Figure 8 The cross-sectional view of the valve device provided in the second embodiment of the present invention when closed Figure 2 ;

[0030] Figure 9The cross-sectional view of the valve device provided in the second embodiment of the present invention when it is turned on Figure 2 ;

[0031] Figure 10 A schematic structural diagram of a valve core assembly provided in Example 2 of the present utility model;

[0032] Figure 11 A schematic diagram of the structure of the knob provided in the second embodiment of the present invention;

[0033] Figure 12 This is a structural diagram of the water supply equipment provided in Example 3 of the present utility model.

[0034] Description of labels:

[0035] 1. Valve body assembly; 10. Restriction groove; 11. First port; 12. Second port; 13. Valve chamber; 14. Guide port; 15. First guide groove; 16. Second guide groove; 17. Valve cover; 171. Adjustment hole; 18. First housing; 19. Second housing;

[0036] 2. Valve core assembly; 21. Valve core; 211. Adjustment member; 212. Main shaft; 2121. Adjustment screw hole; 22. Blocking member; 23. Temperature adjustment member; 24. Base; 241. Water hole; 25. Baffle; 26. Guide support member; 261. Water channel;

[0037] 3. Adjustment knob; 31. Matching hole; 4. Hot water tee; 41. Hot water inlet; 42. Hot water outlet; 5. Cold water tee; 51. Cold water inlet; 52. Cold water outlet; 6. Elastic reset element; 7. Circlip; 8. Sealing ring;

[0038] 100, hot water channel; 200, cold water channel; 300, water heater. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] In the description of this application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0041] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0043] Example 1

[0044] like Figure 1-Figure 5As shown, the present invention first provides a valve device, comprising a valve body assembly 1 and a valve core assembly 2. The valve body assembly 1 has a first port 11, a second port 12, and a valve cavity 13 communicating between the first port 11 and the second port 12. The first port 11 is configured to communicate with a hot water channel 100, and the second port 12 is configured to communicate with a cold water channel 200. A conduction port 14 is provided within the valve cavity 13. The valve core assembly 2 includes a valve core 21, a blocking member 22, and a temperature regulating member 23, both connected to the valve core 21. The valve core 21 is axially movable within the valve cavity 13. The blocking member 22 is configured to open or block the conduction port 14. When the blocking member 22 opens the conduction port 14, one-way communication is established between the first port 11 and the second port 12, allowing fluid to flow only from the hot water channel 100 to the cold water channel 200. The temperature regulating member 23 is located at the first port 11. The temperature regulating member 23 can change the deformation force acting on the valve core 21 according to the fluid temperature of the first port 11, and the deformation force can drive the valve core 21 to move axially. Under normal conditions, under the deformation force of the temperature regulating member 23, the blocking member 22 blocks the conduction port 14, and water cannot flow from the second port 12 to the first port 11, thereby realizing the one-way valve function. When the fluid temperature in the hot water channel 100 changes, the changing fluid temperature causes the temperature regulating member 23 to generate different deformation forces. The force acting on the blocking member 22 is the resultant force of the fluid pressure in the first port 11 and the deformation force applied by the temperature regulating member 23. The two are in opposite directions. The direction of the fluid pressure is from the first port 11 to the second port 12, and the deformation force is from the second port 12 to the first port 11. When the fluid temperature is below a preset temperature, the fluid pressure in hot water channel 100 overcomes the deformation force, allowing passage 14 to flow. When the fluid temperature is above the preset temperature, the fluid pressure in hot water channel 100 is insufficient to overcome the deformation force, and thus blocking member 22 blocks passage 14. This valve device combines unidirectional conduction with temperature sensing, simplifies the structure, reduces manufacturing costs, and eliminates the need for complex piping systems, making it easier to install.

[0045] The temperature adjustment element 23 is a memory spring whose spring constant is positively correlated with the fluid temperature. Initially, the memory spring is compressed, generating a deformation force that consistently drives the valve core 21 axially, causing the blocking element 22 to move toward the sealing port 14. The memory spring is made of a shape memory alloy. Leveraging its properties, the temperature adjustment element 23 operates in two states: a soft phase and a hard phase. When the fluid temperature at the first port 11 is low, the temperature adjustment element 23 is in the soft phase, exhibiting a low spring constant and low spring forces generated by both tension and compression. As the temperature of the first port 11 rises, the memory spring gradually transitions from the soft phase to the hard phase, increasing the spring constant of the temperature adjustment element 23. For the same amount of compression, the spring force generated by the memory spring correspondingly increases. This spring force is the deformation force that the temperature adjustment element 23 uses to drive the valve core 21. Initially, the temperature adjustment element 23 is compressed, allowing the elastic force generated by compression to serve as the deformation force driving the valve core 21.

[0046] The valve core assembly 2 also includes a base 24 and a baffle 25. The base 24 is installed in the valve cavity 13. The valve core 21 can be axially movably installed in the base 24. The baffle 25 is fixed on the valve core 21. The valve core 21 provides guidance for the temperature regulating member 23. The temperature regulating member 23 is mounted on the valve core 21 and is connected to the base 24 and the baffle 25 at both ends. The baffle 25 and the sealing member 22 are respectively located on both sides of the base 24. The baffle 25 and the base 24 limit the position of the temperature regulating member 23. The base 24 is embedded in the valve cavity 13, and the baffle 25 and the sealing member 22 are respectively located on both sides of the base 24, so that the temperature regulating member 23 is located on one side of the first port 11. The base 24 and the valve cavity 13 can be installed by interference fit, which is relatively simple. The base 24 is provided with a water hole 241 that runs through the axial direction to ensure the fluidity of the fluid in the valve cavity 13.

[0047] After the base 24 is installed in the valve cavity 13, the memory spring serving as the temperature adjustment element 23 is always in a compressed state. The initial state of the valve device is defined as the amount of compression of the memory spring when the blocking member 22 opens the conduction port 14. At this point, the temperature adjustment element 23 is in a soft phase, with a small deformation force, which is less than the fluid pressure within the hot water channel 100. Therefore, the valve device is open when the blocking member 22 is positioned away from the conduction port 14 and toward the second port 12. As the temperature of the fluid within the hot water channel 100 increases, the temperature adjustment element 23 transitions from a soft phase to a hard phase, gradually increasing the stiffness of the memory spring. For the same amount of compression, the deformation force of the memory spring also increases. When the temperature reaches T1, the deformation force of the memory spring increases sufficiently to overcome the fluid pressure within the hot water channel 100, causing the blocking member 22 to block the conduction port 14, and the valve device is closed. Temperature T1 at this point is defined as a predetermined temperature. Below this predetermined temperature, the valve device is unidirectionally open; above this temperature, the valve device is closed.

[0048] The valve core 21 is provided with a guide support 26, which is axially movable in the valve cavity 13. The outer periphery of the guide support 26 abuts against the inner wall of the valve cavity 13. The guide support 26 has a water guide channel 261 extending through the guide support 26 in the axial direction. Figure 3 and Figure 4 The guide support 26 provides radial support to prevent the valve core 21 from deflecting and becoming stuck during axial movement, thereby making the movement of the valve core 21 smoother. The water guide channel 261 ensures smooth flow of fluid, allowing the fluid to flow from the hot water channel 100 through the valve cavity 13 to the cold water channel 200.

[0049] For example, Figure 3 and Figure 4 As shown in the figure, the guide support member 26 is a plum blossom-shaped structure, the raised petals are used to abut the inner cavity wall of the valve cavity 13, and the gaps between adjacent petals form a water guide channel 261 for fluid to pass through.

[0050] In order to achieve quick connection with the hot water channel 100 and the cold water channel 200, the valve device also includes a hot water tee joint 4 and a cold water tee joint 5. The hot water tee joint 4 is used to connect the hot water channel 100, and the cold water tee joint 5 is used to connect the cold water channel 200. The hot water tee joint 4 includes a hot water inlet 41, a hot water outlet 42 and a first circulation port that are interconnected. The cold water tee joint 5 includes a cold water inlet 51, a cold water outlet 52 and a second circulation port that are interconnected. The hot water tee joint 4 and the cold water tee joint 5 are both connected to the valve body assembly 1, and the first port 11 is connected to the first circulation port, and the second port 12 is connected to the second circulation port, forming an H-shaped structure. Figure 5 When the fluid temperature in the hot water channel 100 is low, the valve device opens, allowing the fluid to enter the valve chamber 13 through the first circulation port and flow into the cold water channel 200 through the second circulation port. The liquid in the cold water channel 200 can flow back into the water heater 300 and, after preheating, circulate back into the hot water channel 100.

[0051] To simplify the assembly and processing of the valve device, the valve body assembly 1 comprises a first housing 18 and a second housing 19. The first and second housings 18, 19 are detachably connected to enclose a valve chamber 13. The first port 11 and the conducting port 14 are provided in the first housing 18, and the second port 12 is provided in the second housing 19. Since the first housing 18 and the hot water tee 4 are integrally formed, and the second housing 19 and the cold water tee 5 are integrally formed, the first and second circulation ports are not labeled in the drawings. In this case, the first port 11 and the first circulation port are directly connected, and the second port 12 and the second circulation port are directly connected, forming the valve chamber 13. This simplifies the structure and facilitates assembly. The first housing 18 and the hot water tee 4, and the second housing 19 and the cold water tee 5, are attached to the ends of the valve core 21, respectively. While the first and second housings 18, 19 enclose the valve chamber 13, the blocking member 22 is located on the side of the conducting port 14 facing the second port 12.

[0052] A first guide groove 15 is provided in the hot water tee 4, and a second guide groove 16 is provided in the cold water tee 5. The two ends of the valve core 21 are movably inserted into the first guide groove 15 and the second guide groove 16, respectively. When the blocking member 22 opens the conducting port 14, the bottom of the second guide groove 16 abuts the end of the valve core 21 to limit the axial movement of the valve core 21. The first guide groove 15 and the second guide groove 16 provide guidance for the axial movement of the valve core 21, preventing the valve core 21 from twisting during movement and maintaining the smooth movement of the valve core 21. In addition, the second guide groove 16 also has an axial limiting function. When the blocking member 22 is away from the conducting port 14, making the valve device unidirectional, the end of the valve core 21 can abut the bottom of the second guide groove 16. The abutment limit of the second guide groove 16 can prevent the valve core 21 from moving too far axially due to high fluid pressure.

[0053] The valve assembly also includes an elastic return member 6, which is mounted on the outside of the valve core 21. The elastic return member 6 always has the tendency to drive the valve core 21 to move axially, causing the blocking member 22 to move toward the blocking conduction port 14. For example, the elastic return member 6 is a compression spring mounted on the outside of the valve core 21, with one end abutting the inner wall of the cold water tee 5. The elastic return member 6 applies an elastic force from the second port 12 to the first port 11 to the valve core 21, thereby pushing the valve core 21 and causing the blocking member 22 to move toward the blocking conduction port 14. Under the action of the elastic return member 6, the valve assembly can be reliably closed, preventing the temperature adjustment member 23 from deforming insufficiently to overcome the fluid pressure and failing to close properly. On the other hand, when the user is using 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 regulating member 23 is small and insufficient to overcome the fluid pressure in the hot water channel 100. In this case, fluid can easily flow from the hot water channel 100 into the cold water channel 200, affecting the normal discharge of cold water from the cold water channel 200. However, the elastic force of the elastic return member 6 can prevent this from happening. The elastic force of the elastic return member 6 and the deformation force of the temperature regulating member 23 have the same direction, and together they can overcome the fluid pressure in the hot water channel 100, keeping the valve device closed. Of course, when the fluid temperature at the first port 11 drops below the preset temperature and the hot water channel 100 is discharging hot water, the fluid pressure at the first port 11 can overcome the elastic force of the elastic return member 6 and the deformation force of the temperature regulating member 23, allowing the conduction port 14 to achieve normal conduction and ensure fluid backflow. The valve body assembly 1 also includes a valve cover 17. The hot water tee connector 4 defines an outlet connected to the first port 11, and the valve cover 17 is disposed at the outlet. The valve cover 17 is mounted to the hot water tee connector 4 using fasteners. Removing the valve cover 17 allows for quick removal of the valve core assembly 2 from the valve cavity 13 for maintenance. Accordingly, the first guide groove 15 is disposed on the valve cover 17.

[0054] To ensure the sealing of the valve body assembly 1, the valve device also includes a retaining spring 7 and a sealing ring 8. The first housing 18 can be inserted into the second housing 19, or the second housing 19 can be inserted into the first housing 18. For example, the second housing 19 is inserted into the first housing 18, and the sealing ring 8 is sleeved outside the second housing 19 and located between the second and first housings 19, thereby sealing the gap between the second and first housings 19, 18. The retaining spring 7 is used to connect the second and first housings 19, 18, making assembly relatively simple.

[0055] Example 2

[0056] The second embodiment of the present invention provides a valve device, such as Figures 6 to 11As shown, the valve device comprises a valve body assembly 1 and a valve core assembly 2, identical to those in the first embodiment. The valve body assembly 1 comprises a first port 11, a second port 12, and a valve cavity 13 communicating between the first port 11 and the second port 12. The first port 11 is configured to communicate with the hot water channel 100, and the second port 12 is configured to communicate with the cold water channel 200. A conduction port 14 is provided within the valve cavity 13. The valve core assembly 2 comprises a valve core 21, a sealing member 22, and a temperature regulating member 23, both connected to the valve core 21. The valve core 21 is axially movable within the valve cavity 13. The sealing member 22 is configured to open or block the conduction port 14. When the sealing member 22 opens the conduction port 14, one-way flow is established between the first port 11 and the second port 12, allowing fluid to flow only from the hot water channel 100 to the cold water channel 200. The temperature regulating member 23 is located at the first port 11. It deforms according to the temperature of the fluid in the first port 11 and, through this deformation force, drives the valve core 21 to move axially. The moving valve core 21 then drives the blocking member 22 toward the passage 14, blocking the passage 14. When the fluid temperature in the hot water passage 100 changes, the changing fluid temperature causes the temperature regulating member 23 to deform differently, generating different deformation forces. The force acting on the blocking member 22 is the combined force of the fluid pressure applied by the hot water passage 100 and the deformation force applied by the temperature regulating member 23, which act in opposite directions. The fluid pressure is directed from the first port 11 to the second port 12, while the deformation force is directed from the second port 12 to the first port 11. When the fluid temperature is below a preset temperature, the fluid pressure in the hot water passage 100 overcomes the deformation force, rendering the passage 14 unidirectional. When the fluid temperature is above the preset temperature, the fluid pressure in the hot water passage 100 is insufficient to overcome the deformation force, and the blocking member 22 blocks the passage 14.

[0057] The difference of this second embodiment is that the valve core 21 includes a coaxially arranged adjustment member 211 and a main shaft body 212. One of the adjustment member 211 and the main shaft body 212 has an adjustment screw hole 2121, and the other has a screw segment that is threaded into the adjustment screw hole 2121. An adjustment gap is provided between the screw segment and the bottom of the adjustment screw hole 2121, allowing axial relative movement between the screw segment and the adjustment screw hole 2121. The baffle 25 is fixed to the adjustment member 211, and the blocking member 22 is mounted on the main shaft body 212. The main shaft body 212 is axially movable and extends through the base 24.

[0058] Illustratively, the end of the main shaft 212 facing the first port 11 defines an adjustment screw hole 2121. A screw segment is disposed at one end of the adjustment member 211 and is threadedly engaged with the adjustment screw hole 2121. When the base 24 is embedded in the valve cavity 13, the adjustment member 211 is rotated, and the baffle 25 moves axially with the adjustment member 211. The main shaft 212 and the base 24 remain stationary, thereby adjusting the distance between the baffle 25 and the base 24. The initial deformation, or compression, of the temperature adjustment member 23 is determined by the distance between the baffle 25 and the base 24. When the distance between the baffle 25 and the base 24 is increased, the initial deformation of the temperature regulating member 23 becomes smaller, that is, the compression of the temperature regulating member 23 becomes smaller. Accordingly, when the valve device is closed, the compression of the memory spring also becomes smaller. In order to make the memory spring generate the same amount of deformation force to achieve the axial movement of the blocking member 22 to block the conduction port 14, the fluid temperature in the hot water channel 100 needs to be higher, so that the spring coefficient of the memory spring becomes larger to obtain the same amount of elastic force. Figure 6 and Figure 7 As shown, the distance between the baffle 25 and the base 24 before adjustment is shown; Figure 8 and Figure 9 As shown, the figure shows a case where the distance between the baffle 25 and the base 24 is increased.

[0059] Therefore, adjusting the distance between the baffle 25 and the base 24 adjusts the preset temperature of the valve device. Furthermore, the greater the distance between the baffle 25 and the base 24, the higher the preset temperature of the valve device. This allows users to meet different water temperature requirements. When the outlet water temperature of the zero-cold water function is higher, the distance between the baffle 25 and the base 24 is increased to reduce the compression of the memory spring. When the outlet water temperature of the zero-cold water function is lowered, the distance between the baffle 25 and the base 24 is decreased to increase the compression of the memory spring.

[0060] The valve body assembly 1 also includes a valve cover 17. The hot water tee connector 4 is provided with an outlet connected to the first port 11, and the valve cover 17 is disposed at the outlet. The valve cover 17 is provided with an adjustment hole 171 extending therethrough. The valve device also includes an adjustment knob 3. One end of the adjustment knob 3 is connected to the adjustment member 211, and the other end can be rotatably passed through the adjustment hole 171 to extend outside the valve cavity 13. This facilitates the user to adjust the preset temperature from outside the valve device through the adjustment knob 3. The end of the adjustment knob 3 located within the valve cavity 13 is provided with a mating hole 31. The valve body assembly 1 is also provided with a limited rotation groove 10 within the valve cavity 13. The end of the adjustment member 211 away from the main shaft body 212 is inserted into the mating hole 31. The adjustment knob 3 is configured to drive the adjustment member 211 to rotate. The end of the main shaft body 212 away from the adjustment member 211 is axially movably inserted into the limited rotation groove 10. The limited rotation groove 10 is configured to constrain the main shaft body 212 from rotating about its own axis. In this way, when the adjusting knob 3 drives the adjusting member 211 to rotate, the main shaft body 212 is constrained by the limiting groove 10 and cannot rotate, ensuring that the main shaft body 212 will not follow the rotation, so that the screw segment will rotate in the adjusting screw hole 2121, realizing the axial position change between the adjusting member 211 and the main shaft body 212.

[0061] In order to improve the reliability of the adjusting knob 3 rotating the adjusting member 211, as Figure 10 and Figure 11 As shown, the end of the adjusting member 211 is a hexagonal prism, and the other end of the main shaft body 212 away from the adjusting member 211 is also configured as a hexagonal prism. The cross-sectional shape of the matching hole 31 is compatible with the hexagonal prism, and the cross-sectional shape of the rotation-limiting groove 10 is also compatible with the hexagonal prism. The hexagonal prism of the adjusting member 211 is inserted into the matching hole 31 of the adjusting knob 3, and the hexagonal prism of the main shaft body 212 is inserted into the rotation-limiting groove 10. Moreover, there is an accommodating gap between the hexagonal prism of the adjusting member 211 and the bottom of the matching hole 31. In this way, when the knob is adjusted, the adjusting knob 3 can drive the adjusting member 211 to rotate, while the main shaft body 212 remains stationary under the constraint of the rotation-limiting groove 10. Relative rotation occurs between the screw segment and the adjusting screw hole 2121, realizing the axial movement of the adjusting member 211. Moreover, there is a non-interference fit between the hexagonal prism at the end of the adjusting member 211 and the matching hole 31 of the adjusting knob 3. The adjusting member 211 can move axially in the matching hole 31 while rotating, and the accommodating gap provides space for the axial movement of the adjusting member 211. In this way, the adjusting knob 3 only needs to be rotated, and no axial position movement will occur, thereby avoiding excessive protrusion from the valve body assembly 1, reducing the occupied axial space, and not being constrained by a narrow space.

[0062] In other embodiments, the end of the adjusting member 211 and the other end of the main shaft body 212 can also be set as prisms with other cross-sectional shapes, such as triangular prisms, quadrangular prisms, etc., and it is only necessary to adapt the matching hole 31 and the end of the adjusting member 211, and the limiting groove 10 and the other end of the main shaft body 212 to each other, and it is not limited to the drawings of this embodiment.

[0063] Example 3

[0064] The present invention also provides a water supply device. Figure 12 As shown, the water supply device includes a water heater 300, a hot water channel 100 and a cold water channel 200 connected to the water heater 300, and a valve device as described in the first or second embodiment. The hot water channel 100 is connected to the first port 11 of the valve device, and the cold water channel 200 is connected to the second port 12 of the valve device. A conducting port 14 is provided within the valve chamber 13. The valve core assembly 2 includes a valve core 21, a sealing member 22 and a temperature adjustment member 23, both connected to the valve core 21. The valve core 21 is axially movable within the valve chamber 13. The sealing member 22 is used to open or close the conducting port 14. When the sealing member 22 opens the conducting port 14, one-way flow is established between the first port 11 and the second port 12, allowing fluid to flow only from the hot water channel 100 to the cold water channel 200. The temperature regulating member 23 is located at the first port 11. The temperature regulating member 23 can generate different deformation forces according to the change in the fluid temperature of the first port 11, thereby driving the valve core 21 to move axially. The moving valve core 21 can drive the blocking member 22 to move toward the blocking guide port 14. When the temperature of the fluid in the hot water channel 100 changes, the changing fluid temperature causes the temperature regulating member 23 to deform differently, generating different deformation forces. The force acting on the blocking member 22 is the combined force of the fluid pressure applied by the hot water channel 100 and the deformation force applied by the temperature regulating member 23. The two forces are in opposite directions. The direction of the fluid pressure is from the first port 11 to the second port 12, and the deformation force is from the second port 12 to the first port 11. Under normal conditions, the deformation force of the temperature regulating member 23 blocks the passage 14, preventing water from flowing from the second port 12 to the first port 11, thereby functioning as a one-way valve. When the fluid temperature is below a predetermined temperature, the fluid pressure in the hot water channel 100 overcomes the deformation force, rendering the passage 14 unidirectional. When the fluid temperature is above the predetermined temperature, the fluid pressure in the hot water channel 100 is insufficient to overcome the deformation force, causing the blocking member 22 to block the passage 14. This valve device combines unidirectional flow and temperature sensing functions, reducing manufacturing costs and eliminating complex piping systems, simplifying the piping structure of the water supply equipment and improving its reliability.

[0065] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The specific contents of the above-mentioned specific embodiments only express several embodiments of the present invention. Although the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the appended claims.

Claims

1. A valve device, characterized in that include: A valve body assembly (1), the valve body assembly (1) comprising a first port (11), a second port (12), and a valve cavity (13) communicating between the first port (11) and the second port (12), the first port (11) being used to communicate with a hot water channel (100), the second port (12) being used to communicate with a cold water channel (200), and a conducting port (14) being provided in the valve cavity (13); A valve core assembly (2), the valve core assembly (2) comprising a valve core (21), a blocking member (22) and a temperature regulating member (23) both connected to the valve core (21), the valve core (21) being axially movable mounted in the valve cavity (13), the blocking member (22) being used to open or block the conduction port (14); the temperature regulating member (23) being located at the first port (11), and being capable of changing a deformation force acting on the valve core (21) according to a fluid temperature at the first port (11); When the fluid temperature is lower than a preset temperature, the fluid pressure of the first port (11) can enable the valve core (21) to overcome the deformation force to make the conducting port (14) conducting; when the fluid temperature is higher than the preset temperature, the blocking member (22) blocks the conducting port (14).

2. The valve device according to claim 1, characterized in that The temperature regulating member (23) is a memory spring, the spring coefficient of which is positively correlated with the fluid temperature. 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 to drive the valve core (21) to move axially so that the blocking member (22) moves toward the direction of blocking the conducting port (14).

3. The valve device according to claim 2, characterized in that The valve core assembly (2) further includes a base (24) and a baffle (25), wherein the base (24) is installed in the valve cavity (13), the valve core (21) is axially movable through the base (24), the baffle (25) is fixed on the valve core (21), the temperature regulating member (23) is sleeved on the valve core (21) and its two ends are respectively connected to the base (24) and the baffle (25), the baffle (25) and the blocking member (22) are respectively located on both sides of the base (24), and the base (24) is provided with an axially penetrating water hole (241).

4. The valve device according to claim 3, characterized in that The valve core (21) includes a coaxially arranged adjusting member (211) and a main shaft body (212), one of the adjusting member (211) and the main shaft body (212) is provided with an adjusting screw hole (2121), and the other has a screw segment, which is screwed into the adjusting screw hole (2121); an adjusting gap is provided between the screw segment and the bottom of the adjusting screw hole (2121), the baffle (25) is mounted 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 movable and penetrates the base (24).

5. The valve device according to claim 4, characterized in that The valve device also includes an adjusting knob (3), which can be rotatably passed through the valve body assembly (1) so that one end extends outside the valve cavity (13), and a matching hole (31) is provided at one end of the adjusting knob (3) located in the valve cavity (13). The valve body assembly (1) is also provided with a limited rotation groove (10) in the valve cavity (13), and the end of the adjusting member (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 member (211) to rotate; the end of the main shaft body (212) away from the adjusting member (211) can be axially movably inserted into the limited rotation groove (10), and the limited rotation groove (10) is configured to constrain the main shaft body (212) to rotate around its own axis.

6. The valve device according to claim 1, characterized in that The valve core (21) is provided with a guide support member (26), and the guide support member (26) can be axially movably arranged in the valve cavity (13). The outer periphery of the guide support member (26) abuts against the inner cavity wall of the valve cavity (13), and the guide support member (26) has a water guide channel (261) extending through the guide support member along the axial direction.

7. The valve device according to claim 1, characterized in that The valve device further comprises a hot water tee (4) and a cold water tee (5), wherein the hot water tee (4) is used to connect the hot water channel (100), and the cold water tee (5) is used to connect the cold water channel (200), the hot water tee (4) comprises a hot water inlet (41), a hot water outlet (42) and a first circulation port that are interconnected, and the cold water tee (5) comprises a cold water inlet (51), a cold water outlet (52) and a second circulation port that are interconnected, the hot water tee (4) and the cold water tee (5) are both connected to the valve body assembly (1), and the first port (11) is connected to the first circulation port, and the second port (12) is connected to the second circulation port; the first circulation port and the second circulation port are connected to form the valve cavity (13).

8. The valve device according to claim 7, characterized in that A first guide groove (15) is provided in the hot water three-way joint (4), and a second guide groove (16) is provided in the cold water three-way joint (5). The two ends of the valve core (21) are movably inserted into the first guide groove (15) and the second guide groove (16), respectively. When the blocking member (22) opens the conducting port (14), the bottom of the second guide groove (16) abuts against the end of the valve core (21) to limit the axial movement of the valve core (21).

9. The valve device according to any one of claims 1 to 8, characterized in that: The valve device further comprises an elastic reset member (6), wherein the elastic reset member (6) is sleeved outside the valve core (21), and the elastic reset member (6) always has a tendency to drive the valve core (21) to move axially so as to move the blocking member (22) toward the direction of blocking the conducting port (14).

10. A water supply device comprising a water heater (300), and a hot water channel (100) and a cold water channel (200) respectively connected to the water heater (300), characterized in that: It also comprises the valve device according to any one of claims 1 to 9, wherein the hot water channel (100) is connected to the first port (11) of the valve device, and the cold water channel (200) is connected to the second port (12) of the valve device.

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