Heat exchange equipment and make-up water valve

Abstract

The present invention relates to a heat exchange device and a water replenishing valve. When water needs to be replenished to the heating chamber, operations such as applying force are performed on the operating end of the valve core, causing the valve core to move integrally along the direction of its central axis against the acting force of the first elastic resetting member. As a result, the sealing end of the valve core moves away from the water inlet direction, enabling the water inlet to communicate with the liquid replenishing chamber. External water source enters the liquid replenishing chamber through the water inlet, and the water in the liquid replenishing chamber then flows into the heating chamber through the water outlet for water replenishment. After the water replenishment is completed, simply remove the acting force applied to the operating end. Under the resetting force of the first elastic resetting member, the valve core automatically resets, causing the sealing end of the valve core to move back to seal and block the water inlet, thereby re-cutting off the water inlet from the liquid replenishing chamber and preventing the pressure of the heating hot water furnace system from being too high due to excessive water replenishment.

Description

Technical Field

[0001] The present invention relates to the technical field of valve bodies, and particularly to a heat exchange device and a water replenishing valve. Background Art

[0002] As a component capable of regulating the system water pressure, the water replenishing valve has been widely used in heat exchange devices such as closed-loop heating or refrigeration. For example, during the use of a gas water heater, there is a need to replenish water to the heating chamber in the heating water furnace system. The traditional method is to manually open the water replenishing valve for water replenishment, which has the risk of forgetting to close the water replenishing valve after water replenishment, easily causing the problem that the pressure of the heating water furnace system is too high and damaging the heating water furnace system. Summary of the Invention

[0003] The first technical problem to be solved by the present invention is to provide a water replenishing valve that can eliminate the problem of system damage caused by forgetting to close.

[0004] The second technical problem to be solved by the present invention is to provide a heat exchange device that can eliminate the problem of system damage caused by forgetting to close.

[0005] The above first technical problem is solved by the following technical solutions:

[0006] A water replenishing valve, comprising:

[0007] A valve body, the valve body is provided with an open liquid replenishing cavity, a water outlet communicated with the liquid replenishing cavity, and a water inlet communicated with the liquid replenishing cavity;

[0008] A valve core, the valve core is provided with a sealing end, an operating end and a connecting portion, the sealing end and the operating end are relatively spaced apart, the connecting portion is arranged on the outer side wall of the valve core and is located between the sealing end and the operating end, the sealing end is arranged in the liquid replenishing cavity and corresponds to the water inlet, and the operating end penetrates through the outside of the opening;

[0009] A first elastic resetting member, the first elastic resetting member is arranged in the liquid replenishing cavity, and one end of the first elastic resetting member is in abutting cooperation with the valve body, and the other end of the first elastic resetting member is in abutting cooperation with the connecting portion;

[0010] Wherein, the operating end can operably move the sealing end away from the water inlet direction, and the first elastic resetting member can seal the water inlet by the sealing end in a non-operating state.

[0011] The water replenishment valve of the present invention has the following beneficial effects compared with the background technology: under the action of the first elastic reset member, the sealing end of the valve core seals and blocks the water inlet, so that the water inlet and the liquid replenishment chamber are cut off, and the external water source cannot enter the liquid replenishment chamber through the water inlet. When it is necessary to replenish the heating chamber with water, force is applied on the operating end of the valve core, so that the valve core overcomes the force of the first elastic reset member and moves as a whole along its own central axis direction, thereby causing the sealing end of the valve core to move away from the water inlet, so that the water inlet is connected with the liquid replenishment chamber, and the external water source enters the liquid replenishment chamber through the water inlet, and the water in the liquid replenishment chamber flows into the heating chamber through the water outlet for water replenishment. After the water replenishment is completed, it is only necessary to release the force applied to the operating end, and under the action of the reset force of the first elastic reset member, the valve core is automatically reset, so that the sealing end of the valve core moves again to seal and block the water inlet, and then the water inlet and the liquid replenishment chamber are cut off again, thereby avoiding excessive pressure in the heating hot water boiler system caused by excessive water replenishment. At the same time, compared with the traditional method of manually closing the water supply valve, you only need to loosen the operating end to use the reset force of the first elastic reset part to make the sealing end of the valve core re-seal and block the water inlet. It is simple and convenient, and eliminates the problem of system damage caused by forgetting to close the water supply valve.

[0012] In one of the embodiments, the water replenishment valve also includes a valve seat arranged corresponding to the opening and fixedly connected to the valve body, the valve seat is sleeved on the outer side wall of the valve core, the valve seat is provided with an installation cavity connected to the liquid replenishment cavity, and an installation through hole for the operating end to pass through, the first elastic return member is arranged in the installation cavity, and one end of the first elastic return member is in contact with the valve seat.

[0013] In one of the embodiments, the water replenishment valve further includes a guide member, wherein the guide member is disposed in the liquid replenishment cavity, the guide member is disposed between the valve seat and the sealing end, and the guide member is provided with a guide hole for the valve core to pass through.

[0014] In one of the embodiments, the water supply valve further includes a first sealing element, which is sleeved on the outer side wall of the valve core, and the first sealing element is sealingly matched with the inner wall of the installation cavity.

[0015] In one embodiment, the water supply valve further includes an operating member, and the operating member is connected to the operating end.

[0016] In one embodiment, the valve body is further provided with a communication cavity, the communication cavity is communicated with both the liquid replenishing cavity and the heating cavity, the water replenishing valve further includes a locking assembly disposed in the communication cavity, one end of the locking assembly extends into the liquid replenishing cavity and is in abutting fit with the outer sidewall of the valve core with a preset elastic pre-tightening force, and when the water pressure in the heating cavity is greater than or equal to a preset water pressure value, the one end of the locking assembly can be separated from the valve core.

[0017] In one embodiment, the locking assembly includes a locking pin and a second elastic reset member disposed in the communication cavity, the outer sidewall of the locking pin is in sealing fit with the sidewall of the communication cavity, one end of the locking pin is connected to the second elastic reset member, the other end of the locking pin extends into the liquid replenishing cavity and is in abutting fit with the outer sidewall of the valve core with a preset elastic pre-tightening force, a support portion disposed in the communication cavity is provided on the outer sidewall of the locking pin, and along the extension direction of the second elastic reset member, the support portion is disposed above the communication portion between the communication cavity and the heating cavity. When the water pressure in the heating cavity is greater than or equal to the preset water pressure value, the upward force received by the support portion is greater than the extension force of the second elastic reset member.

[0018] In one embodiment, a clamping groove for clamping and cooperating with one end of the locking pin is provided on the outer sidewall of the valve core, and the clamping groove is disposed between the sealing end and the connecting portion.

[0019] In one embodiment, a closing portion is provided on the inner sidewall of the communication cavity, the closing portion is provided with a communication through hole for communicating the communication cavity with the liquid replenishing cavity, and a guide sleeve disposed around the communication through hole. The guide sleeve is sleeved on the outer sidewall of the locking pin, the outer sidewall of the locking pin is in sealing fit with the guide sleeve, and along the extension direction of the second elastic reset member, the uppermost end of the guide sleeve is located above the communication portion between the communication cavity and the heating cavity.

[0020] In one embodiment, the support portion is in sealing fit with the inner sidewall of the communication cavity.

[0021] The above second technical problem is solved by the following technical solution:

[0022] A heat exchange device includes the water replenishing valve described above.

[0023] The beneficial effects of the heat exchange device described in the present invention compared with the background art are as follows: Under the action of the first elastic reset member, the sealing end of the valve core seals and blocks the water inlet, cutting off the connection between the water inlet and the liquid supplement cavity, and preventing external water sources from entering the liquid supplement cavity through the water inlet. When it is necessary to replenish water to the heating cavity, an external force is applied to the operating end of the valve core, causing the valve core to overcome the acting force of the first elastic reset member and move integrally along its central axis direction. As a result, the sealing end of the valve core moves away from the water inlet, enabling the water inlet to communicate with the liquid supplement cavity. External water sources enter the liquid supplement cavity through the water inlet, and the water in the liquid supplement cavity then flows into the heating cavity through the water outlet for water replenishment. After the water replenishment is completed, simply remove the force applied to the operating end. Under the reset force of the first elastic reset member, the valve core automatically resets, causing the sealing end of the valve core to move back to seal and block the water inlet, thus cutting off the connection between the water inlet and the liquid supplement cavity again, and preventing the pressure of the heating hot water furnace system from becoming too high due to excessive water replenishment. At the same time, compared with the traditional method of manually closing the water replenishment valve, simply releasing the operating end allows the reset force of the first elastic reset member to cause the sealing end of the valve core to reseal and block the water inlet, which is simple and convenient, eliminating the problem of system damage caused by forgetting to close the water replenishment valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 It is a cross-sectional view of the operating end of the water replenishment valve in a non-operating state for an embodiment;

[0027] Figure 2 is Figure 1 a cross-sectional view of the operating end of the water replenishment valve in an operating state;

[0028] Figure 3 is Figure 2 a partial enlarged view of part B of the water replenishment valve;

[0029] Figure 4 is Figure 1 a cross-sectional view of the locking assembly of the water replenishment valve in contact and cooperation with the valve core;

[0030] Figure 5 isFigure 4 Partial enlarged view of part D of the water replenishing valve

[0031] Figure 6 is Figure 1 Cross-sectional view when the locking assembly of the water replenishing valve is separated from the valve core

[0032] Figure 7 is Figure 6 Partial enlarged view of part E of the water replenishing valve

[0033] Reference numerals:

[0034] 100, valve body; 110, liquid replenishing cavity; 111, opening; 120, water outlet; 130, water inlet; 140, communication cavity; 141, closed part; 142, guide sleeve; 143, piston cavity; 150, heating cavity; 200, valve core; 210, sealing end; 220, operating end; 230, connecting part; 240, clamping groove; 300, first elastic resetting member; 400, valve seat; 410, installation through hole; 500, guide member; 510, guide hole; 600, first sealing element; 700, operating member; 800, locking assembly; 810, locking pin; 811, supporting part; 820, second elastic resetting member Detailed implementation manners

[0035] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0041] As Figure 1 , Figure 2 , Figure 4 and Figure 6 shown, in one embodiment, a make-up water valve is provided, which can be applied to heat exchange devices such as closed-loop heating or cooling. Specifically, the make-up water valve includes a valve body 100, a valve core 200 and a first elastic reset member 300.

[0042] As Figure 1 , Figure 2 , Figure 4 andFigure 6 As shown in the figure, a liquid replenishing chamber 110 with an opening 111, a water outlet 120 communicating with the liquid replenishing chamber 110, and a water inlet 130 communicating with the liquid replenishing chamber 110 are provided on the valve body 100.

[0043] As Figures 1 to 7 shown in the figure, a valve core 200 is provided with a sealing end 210, an operating end 220 and a connecting portion 230. The sealing end 210 and the operating end 220 are arranged at intervals relative to each other. The connecting portion 230 is arranged on the outer side wall of the valve core 200 and is located between the sealing end 210 and the operating end 220. The sealing end 210 is arranged in the liquid replenishing chamber 110 and is correspondingly arranged opposite to the water inlet 130. The operating end 220 passes through the outside of the opening 111.

[0044] As Figures 1 to 7 shown in the figure, a first elastic reset member 300 is arranged in the liquid replenishing chamber 110. One end of the first elastic reset member 300 is in contact and cooperation with the valve body 100, and the other end of the first elastic reset member 300 is in contact and cooperation with the connecting portion 230.

[0045] Moreover, the operating end 220 can operably move the sealing end 210 in a direction away from the water inlet 130 (as shown by the A direction in Figure 1 the figure), and the first elastic reset member 300 can seal the water inlet 130 with the sealing end 210 in a non-operating state.

[0046] In the water replenishment valve of the above embodiment, under the action of the first elastic reset member 300, the sealing end 210 of the valve core 200 seals and blocks the water inlet 130, so that the water inlet 130 and the liquid replenishment chamber 110 are cut off, and the external water source (such as tap water) cannot enter the liquid replenishment chamber 110 through the water inlet 130. When it is necessary to replenish the heating chamber with water, force is applied to the operating end 220 of the valve core 200, so that the valve core 200 overcomes the force of the first elastic reset member 300 and moves as a whole along its central axis, thereby causing the sealing end 210 of the valve core 200 to move away from the water inlet 130, so that the water inlet 130 is connected with the liquid replenishment chamber 110, and the external water source enters the liquid replenishment chamber 110 through the water inlet 130, and the water in the liquid replenishment chamber 110 flows into the heating chamber 150 through the water outlet 120 for water replenishment. After the water replenishment is completed, it is only necessary to release the force applied to the operating end 220, and under the action of the reset force of the first elastic reset member 300, the valve core 200 is automatically reset, so that the sealing end 210 of the valve core 200 moves again to seal the water inlet 130, and then the water inlet 130 and the liquid replenishment chamber 110 are cut off again, avoiding excessive pressure in the heating hot water boiler system due to excessive water replenishment. At the same time, compared with the traditional method of manually closing the water replenishment valve, it is only necessary to loosen the operating end 220, and the reset force of the first elastic reset member 300 can be used to make the sealing end 210 of the valve core 200 reseal and block the water inlet 130, which is simple and convenient, and eliminates the problem of system damage caused by forgetting to close the water replenishment valve.

[0047] The water outlet 120 and the water inlet 130 are staggered and located at different parts of the valve body 100. The sealing end 210 seals the water inlet 130 so that the water inlet and the water outlet do not interfere with each other, thereby ensuring smooth water replenishment.

[0048] The sealing end 210 is disposed corresponding to the water inlet 130 , which means that the sealing end 210 can be moved to block the water inlet 130 or open the water inlet 130 .

[0049] The operating end 220 is disposed outside the opening 111 , which means that the operating end 220 extends out of the opening 111 and is located outside the fluid infusion cavity 110 , so as to facilitate operations such as applying force to the operating end 220 .

[0050] like Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, optionally, the water replenishing valve further includes an operating member 700, and the operating member 700 is connected to the operating end 220. In this way, through the operating member 700, a force application operation can be carried out more conveniently and labor - savingly, so that the operating end 220 can move along the central axis direction of the valve core 200, and then drive the entire valve core 200 to move along its own central axis direction, thereby causing the sealing end 210 to move away from the water inlet 130. Among them, the operating member 700 can be in the form of an operating handle, an operating lever, etc. For example, the operating member 700 can be a cam handle rotatably connected to the operating end 220 through components such as a rotating shaft. The cam handle rotates with the outer wall of the valve body 100 as a fulcrum, so as to be able to drive the valve core 200 to overcome the acting force of the first elastic reset member 300 and move as a whole along its own central axis away from the water inlet 130. The cam handle makes the operation more convenient and labor - saving.

[0051] Among them, the connecting portion 230 can be structures such as a boss, a flange or a rib. The connecting portion 230 protrudes from the outer wall of the valve core 200, so that the first elastic reset member 300 can be compressed along the central axis direction of the valve core 200 with a certain pre - tightening force and arranged between the connecting portion 230 and the valve body 100. Thus, in the non - operating state (that is, when no force is applied to the operating end 220, etc.), the sealing end 210 can overcome the pressure of the water source and stably and reliably seal and block the water inlet 130.

[0052] Among them, the first elastic reset member 300 can be an element with an elastic reset function such as a spring. When the first elastic reset member 300 is a spring, the spring can be sleeved on the outer wall of the valve core 200. Along the central axis direction of the valve core 200, one end of the spring abuts against the connecting portion 230, and the other end of the spring abuts against the inner wall of the liquid replenishing cavity 110. And when the operating end 220 is not operated, the spring remains in a compressed state. Under the action of the elastic force, the sealing end 210 is pressed tightly against the water inlet 130 to reliably seal and block the water inlet 130, so that the water inlet 130 and the liquid replenishing cavity 110 are cut off. The spring is sleeved on the outer wall of the valve core 200, which also makes the circumferential force on the valve core 200 balanced, and the valve core 200 will not shift due to uneven force during the moving process.

[0053] Such as Figures 1 to 7As shown, optionally, the water replenishing valve further includes a valve seat 400 disposed corresponding to the opening 111 and fixedly connected to the valve body 100. In this way, the valve seat 400 can be fixed in the liquid replenishing chamber 110 by means of snap connection, plug connection, etc. after passing through the opening 111. And, the valve seat 400 is sleeved on the outer side wall of the valve core 200. Among them, the valve seat 400 is provided with an installation cavity (not labeled) communicating with the liquid replenishing chamber 110 and an installation through hole 410 for the operation end 220 to pass through. In this way, the sealing end 210 of the valve core 200 seals the water inlet 130, and the operation end 220 of the valve core 200 extends to the outside after passing through the installation cavity and the installation through hole 410. The first elastic reset member 300 is disposed in the installation cavity, and one end of the first elastic reset member 300 abuts and cooperates with the valve seat 400, and the other end of the first elastic reset member 300 abuts and cooperates with the connecting portion 230. In this way, the first elastic reset member 300 can be sleeved on the outer side wall of the valve core 200, the sealing end 210 of the valve core 200 is inserted into the liquid replenishing chamber 110 so that the sealing end 210 closes the water inlet 130, and then the operation end 220 of the valve core 200 passes through the installation cavity and the installation through hole 410 of the valve seat 400 so that the valve seat 400 is sleeved on the outer side wall of the valve core 200, and the valve seat 400 is inserted into the opening 111 and the valve seat 400 is stably and reliably plugged and fixed with the valve body 100, so that the inner wall of the installation cavity presses the first elastic reset member 300, and then the first elastic reset member 300 is installed in the installation cavity in a compressed state, with simple and convenient assembly and improved assembly efficiency. At the same time, after the first elastic reset member 300 is installed in the installation cavity in a compressed state, the first elastic reset member 300 pushes the sealing end 210 of the valve core 200 to tightly abut against the water inlet 130 against the pressure of the water source, so that the water inlet 130 is cut off from the liquid replenishing chamber 110. Of course, the operation end 220 extends out of the installation cavity. When the operating member 700 is a cam handle, turning the cam handle with the outer side wall of the valve seat 400 as a fulcrum is labor-saving and convenient.

[0054] Furthermore, in order to ensure the sealing performance, sealing elements such as sealing rings can also be added between the outer side wall of the valve seat 400 and the inner side wall of the liquid replenishing chamber 110 to avoid problems such as leakage.

[0055] Such as Figure 1 、 Figure 3 、 Figure 5 And Figure 7As shown, in addition, the water replenishment valve also includes a guide member 500. The guide member 500 is arranged in the replenishment cavity 110, the guide member 500 is arranged between the valve seat 400 and the sealing end 210, and the guide member 500 is provided with a guide hole 510 for the valve core 200 to pass through. In this way, the side wall of the guide hole 510 can be used to guide the movement of the valve core 200, so as to ensure that the movement of the valve core 200 will not be offset, thereby ensuring that the valve core 200 can accurately seal the water inlet 130 when it is reset. The guide hole 510 can be composed of two guide blocks arranged at a relatively interval, or it can be realized by opening a through hole in the central part of the guide disk, as long as the valve core 200 passes through the guide hole 510, the outer wall of the valve core 200 will not be offset during the movement of the valve core 200 along its own central axis under the guiding action of the inner wall of the guide hole 510. Furthermore, the guide member 500 may be integrally formed with the valve body 100 or the valve seat 400 , or they may be separately formed and then assembled.

[0056] like Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, in addition, the water replenishment valve also includes a first sealing element 600, which is sleeved on the outer side wall of the valve core 200, and the first sealing element 600 is sealed with the inner wall of the installation cavity. In this way, the sealing effect of the first sealing element 600 can prevent the water entering the replenishment cavity 110 from the water inlet 130 from leaking out through the installation cavity and the installation through hole 410. Among them, the first sealing element 600 can be an existing sealing element such as a sealing ring. Two relatively spaced connecting protrusions can be set on the outer side wall of the valve core 200, and the first sealing element 600 is set between the two connecting protrusions to prevent the first sealing element 600 from moving relative to the valve core 200 when the valve core 200 moves along its own central axis direction, thereby ensuring the sealing effect. The connecting protrusion can also play the role of the connecting portion 230 and interfere with the first elastic reset member 300.

[0057] Among them, when the first sealing element 600 adopts an elastic sealing ring and the operating part 700 adopts a cam handle, the rotation of the cam handle will cause uneven force on both sides of the valve core 200. The side wall of the guide hole 510 of the guide part 500 is used to guide the valve core 200, which can avoid the displacement of the valve core 200 during the movement and ensure that the water outlet 130 can be accurately sealed when the valve core 200 is reset.

[0058] By applying force at the operating end 220, the sealing end 210 is separated from the water inlet 130. Under the reset force of the first elastic reset member 300, the sealing end 210 has a tendency to reset. Therefore, it is necessary to continue to apply force at the operating end 220 to achieve continuous water replenishment.

[0059] As Figure 1 , Figure 3 , Figure 5 and Figure 7 shown, optionally, the valve body 100 is further provided with a communication cavity 140 which communicates with both the liquid replenishing cavity 110 and the heating cavity 150. As Figure 1 , Figure 3 , Figure 5 and Figure 7 shown, and the water replenishing valve further includes a locking assembly 800 disposed in the communication cavity 140. One end of the locking assembly 800 extends into the liquid replenishing cavity 110 and is in abutting cooperation with the outer sidewall of the valve core 200 with a preset elastic pre-tightening force. In this way, when a force is applied to the operating end 220, etc., the valve core 200 overcomes the acting force of the first elastic reset member 300 and moves integrally along the direction of its central axis, and then the sealing end 210 of the valve core 200 moves away from the water inlet 130, so that the water inlet 130 communicates with the liquid replenishing cavity 110. At this time, even if the force applied to the operating end 220 is removed, by virtue of the abutting cooperation between one end of the locking assembly 800 and the outer sidewall of the valve core 200, under the action of the abutting force or frictional force, overcoming the reset force of the first elastic reset member 300, the valve core 200 can also be kept stationary relative to the valve body 100, so that the water inlet 130 continuously communicates with the liquid replenishing cavity 110 for water replenishment, liberating both hands and eliminating the need for continuous force application, etc. And when the water pressure in the heating cavity 150 is greater than or equal to the preset water pressure value, one end of the locking assembly 800 can be separated from the valve core 200. In this way, as the water replenishment progresses, the water pressure in the heating cavity 150 continuously rises. When the water pressure in the heating cavity 150 is greater than or equal to the preset water pressure value, under the action of the water pressure, the locking assembly 800 can be moved, so that one end of the locking assembly 800 is spaced apart from the outer sidewall of the valve core 200 and separated, that is, the abutting cooperation between one end of the locking assembly 800 and the outer sidewall of the valve core 200 is released. At this time, under the action of the reset force of the first elastic reset member 300, the valve core 200 automatically resets, so that the sealing end 210 of the valve core 200 moves back to seal the water inlet 130, and then the water inlet 130 is re-blocked from the liquid replenishing cavity 110, avoiding excessive water pressure in the heating water furnace system due to excessive water replenishment.

[0060] Among them, the preset elastic pre-tightening force and the preset water pressure value can be flexibly designed or adjusted according to actual usage requirements, as long as it is satisfied that when the water pressure in the heating cavity 150 is less than the preset water pressure value, under the action of the preset elastic pre-tightening force, the valve core 200 can be stationary relative to the valve body 100, and when the water pressure in the heating cavity 150 is greater than or equal to the preset water pressure value, under the action of the water pressure, the locking assembly 800 can be separated from the valve core 200 to enable the valve core 200 to reset.

[0061] like Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, specifically, the locking assembly 800 includes a locking pin 810 and a second elastic reset member 820 disposed in the connecting cavity 140. Among them, the outer wall of the locking pin 810 is sealed with the side wall of the connecting cavity 140. In this way, the liquid in the connecting cavity 140 is prevented from flowing into the liquid replenishing cavity 110. In addition, one end of the locking pin 810 is connected to the second elastic reset member 820 by plugging or snapping, and the other end of the locking pin 810 extends into the liquid replenishing cavity 110 and contacts the outer wall of the valve core 200 with a preset elastic pre-tightening force. In this way, the second elastic reset member 820 is installed in the connecting cavity 140 in a compressed state. The outer wall of the locking pin 810 is provided with a supporting portion 811 disposed in the connecting cavity 140. In this way, when there is less water and lower water pressure in the heating chamber 150, force is applied at the operating end 220 to move the sealing end 210 of the valve core 200 to separate from the water inlet 130. Even if the force applied to the operating end 220 is released, the tensile force applied to the locking pin 810 by the second elastic reset member 820 causes the bottom end of the locking pin 810 to tightly contact the outer wall of the valve core 200 with a preset elastic preload force, thereby allowing the valve core 200 to overcome the reset force of the first elastic reset member 300 and remain stationary relative to the valve body 100, so that the water inlet 130 is continuously connected to the liquid replenishment chamber 110 for water replenishment, freeing both hands and eliminating the need for continuous force application and other operations. At the same time, along the extension direction of the second elastic reset member 820, the support portion 811 is arranged above the connecting portion between the connecting chamber 140 and the heating chamber 150. When the water pressure in the heating chamber 150 is greater than or equal to the preset water pressure value, the support portion 811 is subjected to an upward force (such as Figure 5 and Figure 7 The F force is greater than the tensile force of the second elastic reset member 820 (the direction of the tensile force is as shown in FIG. Figure 3As shown in the C direction). In this way, as the water replenishment progresses, the water pressure in the heating chamber 150 continuously rises. When the water pressure in the heating chamber 150 is greater than or equal to the preset water pressure value, the increased water pressure acts on the end face of the support portion 811, so that the upward force received by the support portion 811 is greater than the tensile force of the second elastic return member 820. Furthermore, the locking pin 810 overcomes the tensile force of the second elastic return member 820 and further compresses the second elastic return member 820, so that the locking pin 810 moves away from the valve core 200, causing the locking pin 810 to be spaced apart from the outer side wall of the valve core 200 and separated, that is, the contact fit between one end of the locking assembly 800 and the outer side wall of the valve core 200 is released. At this time, under the action of the return force of the first elastic return member 300, the valve core 200 automatically returns, so that the sealing end 210 of the valve core 200 moves back to seal the water inlet 130 again, and then the water inlet 130 and the liquid replenishment chamber 110 are cut off again, avoiding excessive pressure in the heating water heater system due to excessive water replenishment.

[0062] Among them, the second elastic return member 820 can be an element with an elastic return function such as a spring. The support portion 811 can be a structure such as a flange or a boss provided on the outer side wall of the locking pin 810.

[0063] Among them, there can also be an intermediate flow channel between the heating chamber 150 and the communication chamber 140 to achieve intercommunication. There can also be an intermediate flow channel between the heating chamber 150 and the water outlet 120 to achieve intercommunication.

[0064] Such as Figure 3 、 Figure 5 and Figure 7 As shown, further, a clamping groove 240 for clamping and cooperating with one end of the locking pin 810 is provided on the outer side wall of the valve core 200, and the clamping groove 240 is arranged between the sealing end 210 and the connecting portion 230. In this way, when a force is applied to the operating end 220 of the valve core 200 and other operations are performed, so that the valve core 200 overcomes the acting force of the first elastic return member 300 and moves integrally along its central axis direction, when the clamping groove 240 corresponds to one end of the locking pin 810, under the action of the tensile force of the second elastic return member 820, one end of the locking pin 810 is inserted into the clamping groove 240 to achieve stable and reliable clamping and locking with the valve core 200. Even if the force applied to the operating end 220 is removed, the valve core 200 can still remain stationary relative to the valve body 100 stably.

[0065] Such as Figure 3 、 Figure 5 and Figure 7As shown, optionally, a closing portion 141 is provided on the inner sidewall of the communication cavity 140. The closing portion 141 is provided with a communication through-hole (not labeled) for communicating the communication cavity 140 with the liquid replenishing cavity 110, and a guide sleeve 142 disposed around the communication through-hole. Among them, the guide sleeve 142 is sleeved on the outer sidewall of the locking pin 810, and the outer sidewall of the locking pin 810 is in sealing cooperation with the guide sleeve 142. And, along the extension direction of the second elastic reset member 820, the uppermost end of the guide sleeve 142 is located above the communication portion between the communication cavity 140 and the heating cavity 150. Thus, when the water in the heating cavity 150 is less and the water pressure is low, by using the extension force applied by the second elastic reset member 820 to the locking pin 810, the side surface of the supporting portion 811 is attached to the end surface of the uppermost end of the guide sleeve 142. At this time, a sealed piston cavity 143 is formed by enclosing the outer sidewall of the guide sleeve 142, the sidewall of the supporting portion 811 and the corresponding inner sidewall of the communication cavity 140. The water in the heating cavity 150 flows into the piston cavity 143. Since the water pressure in the heating cavity 150 is low, the upward acting force of the water on the supporting portion 811 is less than the extension force of the second elastic reset member 820, so that the bottom end of the locking pin 810 tightly abuts against the outer sidewall of the valve core 200 with a preset elastic pre-tightening force. As the water replenishment progresses, the water pressure in the heating cavity 150 continuously rises. When the water pressure in the heating cavity 150 is greater than or equal to the preset water pressure value, the increased water pressure acts on the end surface of the supporting portion 811, so that the upward acting force received by the supporting portion 811 is greater than the extension force of the second elastic reset member 820. Furthermore, the locking pin 810 overcomes the extension force of the second elastic reset member 820 and further compresses the second elastic reset member 820, so that the locking pin 810 moves in a direction away from the valve core 200, causing the locking pin 810 to be spaced from the outer sidewall of the valve core 200 and separated, that is, the abutting fit between one end of the locking assembly 800 and the outer sidewall of the valve core 200 is released. At this time, under the action of the restoring force of the first elastic reset member 300, the valve core 200 automatically resets, so that the sealing end 210 of the valve core 200 moves back to seal and block the water inlet 130, and further the water inlet 130 and the liquid replenishing cavity 110 are cut off again, avoiding the pressure of the heating water furnace system being too high due to excessive water replenishment.

[0066] Among them, the closing portion 141 can be structures such as a closing plate, a closing flange, etc. The inner diameter of the communication through-hole can be slightly larger than the outer diameter of the locking pin 810.

[0067] Among them, the guide sleeve 142 can guide and limit the movement of the locking pin 810 relative to the valve body 100, avoiding the supporting portion 811 moving below the communication portion between the communication cavity 140 and the heating cavity 150, and ensuring that when the water pressure in the heating cavity 150 rises to the preset water pressure value, under the action of the water pressure, the supporting portion 811 can move in a direction close to the second elastic reset member 820 and the locking pin 810 is separated from the valve core 200.

[0068] Among them, the sealing fit between the guide sleeve 142 and the outer side wall of the locking pin 810 can be achieved by sleeving a sealing element such as an elastic sealing ring on the outer side wall of the locking pin 810, as long as it is ensured that the water in the piston chamber 143 does not flow into the liquid supplement chamber 110.

[0069] Among them, along the extension direction of the second elastic return member 820, above the communication part between the communication chamber 140 and the heating chamber 150 refers to a position closer to the second elastic return member 820 than the communication part between the communication chamber 140 and the heating chamber 150.

[0070] Optionally, the support portion 811 is in sealing fit with the inner side wall of the communication chamber 140. In this way, it can be avoided that the water flowing from the heating chamber 150 into the communication chamber 140 flows to the upper part of the support portion 811 and floods the second elastic return member 820, preventing the second elastic return member 820 from being corroded and interfered, ensuring that the second elastic return member 820 can work reliably and stably, and extending its service life. Among them, an installation groove can be opened at the end of the support portion 811, and an existing elastic sealing ring can be installed in this installation groove, which can not only achieve effective isolation and sealing, but also does not affect the reciprocating movement of the locking pin 810 along the telescopic direction of the second elastic return member 820.

[0071] In one embodiment, a heat exchange device is further provided, including the water replenishing valve according to any one of the above embodiments.

[0072] For the heat exchange device of the above embodiment, under the action of the first elastic reset member 300, the sealing end 210 of the valve core 200 seals the water inlet 130, so that the water inlet 130 is cut off from the liquid replenishing chamber 110, and the external water source cannot enter the liquid replenishing chamber 110 through the water inlet 130. When it is necessary to replenish water to the heating chamber 150, an operation such as applying force is performed on the operation end 220 of the valve core 200, so that the valve core 200 overcomes the acting force of the first elastic reset member 300 and moves integrally along the direction of its central axis. Furthermore, the sealing end 210 of the valve core 200 moves away from the water inlet 130, so that the water inlet 130 is communicated with the liquid replenishing chamber 110, and the external water source enters the liquid replenishing chamber 110 through the water inlet 130. The water in the liquid replenishing chamber 110 then flows into the heating chamber 150 through the water outlet 120 for water replenishment. After the water replenishment is completed, only the acting force applied to the operation end 220 needs to be released. Under the action of the reset force of the first elastic reset member 300, the valve core 200 automatically resets, so that the sealing end 210 of the valve core 200 moves back to seal the water inlet 130 again, and further the water inlet 130 is cut off from the liquid replenishing chamber 110 again, avoiding excessive pressure in the heating hot water furnace system due to excessive water replenishment. At the same time, as long as the operation end 220 is released, the reset force of the first elastic reset member 300 can be used to make the sealing end 210 of the valve core 200 seal the water inlet 130 again, which is simple and convenient, and eliminates the problem of system damage caused by forgetting to close the water replenishing valve.

[0073] It should be noted that the heat exchange device of the above embodiment can be a gas water heater or other existing heating or cooling devices with a closed cycle.

[0074] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0075] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A water replenishing valve, characterized in that, Comprising: A valve body (100), the valve body (100) is provided with a liquid replenishing chamber (110) having an opening (111), a water outlet (120) communicating with the liquid replenishing chamber (110), and a water inlet (130) communicating with the liquid replenishing chamber (110); A valve core (200), the valve core (200) is provided with a sealing end (210), an operating end (220) and a connecting portion (230), the sealing end (210) and the operating end (220) are arranged opposite to each other at an interval, the connecting portion (230) is arranged on the outer side wall of the valve core (200) and is located between the sealing end (210) and the operating end (220), the sealing end (210) is arranged in the liquid replenishing chamber (110) and is arranged corresponding to the water inlet (130), and the operating end (220) passes through the outside of the opening (111); A first elastic reset member (300), the first elastic reset member (300) is arranged in the liquid replenishing chamber (110), and one end of the first elastic reset member (300) is in abutting cooperation with the valve body (100), and the other end of the first elastic reset member (300) is in abutting cooperation with the connecting portion (230); The valve body (100) is further provided with a communication chamber (140), the communication chamber (140) communicates with both the liquid replenishing chamber (110) and a heating chamber (150), the water replenishing valve further includes a locking assembly (800) arranged in the communication chamber (140), one end of the locking assembly (800) extends into the liquid replenishing chamber (110) and is in abutting cooperation with the outer side wall of the valve core (200) with a preset elastic pre-tightening force, and when the water pressure in the heating chamber (150) is greater than or equal to a preset water pressure value, the one end of the locking assembly (800) can be separated from the valve core (200); Wherein, the operating end (220) can operably move the sealing end (210) in a direction away from the water inlet (130), and the first elastic reset member (300) can seal the water inlet (130) with the sealing end (210) in a non-operating state.

2. The water replenishing valve according to claim 1, characterized in that, The water replenishing valve further includes a valve seat (400) arranged corresponding to the opening (111) and fixedly connected to the valve body (100), the valve seat (400) is sleeved on the outer side wall of the valve core (200), the valve seat (400) is provided with an installation chamber communicating with the liquid replenishing chamber (110), and an installation through hole (410) for the operating end (220) to pass through, the first elastic reset member (300) is arranged in the installation chamber, and one end of the first elastic reset member (300) is in abutting cooperation with the valve seat (400).

3. The water replenishing valve according to claim 2, wherein, The water replenishing valve further includes a guiding member (500), the guiding member (500) is arranged in the liquid replenishing chamber (110), the guiding member (500) is arranged between the valve seat (400) and the sealing end (210), and the guiding member (500) is provided with a guiding hole (510) for the valve core (200) to pass through.

4. The water replenishing valve according to claim 2, wherein The water supply valve further comprises a first sealing element (600), the first sealing element (600) being sleeved on the outer wall of the valve core (200), and the first sealing element (600) being in sealing cooperation with the inner wall of the installation cavity.

5. The water replenishing valve according to claim 1, wherein The water replenishment valve further comprises an operating member (700), wherein the operating member (700) is connected to the operating end (220).

6. The water replenishing valve according to claim 1, characterized in that, The locking assembly (800) comprises a locking pin (810) and a second elastic reset member (820) disposed in the connecting cavity (140); the outer wall of the locking pin (810) is sealed with the side wall of the connecting cavity (140); one end of the locking pin (810) is connected to the second elastic reset member (820); the other end of the locking pin (810) extends into the liquid replenishing cavity (110) and contacts with the outer wall of the valve core (200) with a preset elastic pre-tightening force; The outer wall of the pin (810) is provided with a support portion (811) arranged in the connecting cavity (140), and along the extension direction of the second elastic return member (820), the support portion (811) is arranged above the connecting portion between the connecting cavity (140) and the heating cavity (150); when the water pressure in the heating cavity (150) is greater than or equal to a preset water pressure value, the support portion (811) is subjected to an upward force greater than the extension force of the second elastic return member (820).

7. The water replenishing valve according to claim 6, characterized in that, The outer wall of the valve core (200) is provided with a slot (240) for engaging with one end of the lock pin (810), and the slot (240) is arranged between the sealing end (210) and the connecting portion (230).

8. The water replenishing valve according to claim 6, wherein The inner wall of the connecting cavity (140) is provided with a closing portion (141), the closing portion (141) is provided with a connecting through hole for connecting the connecting cavity (140) and the fluid replenishing cavity (110), and a guide sleeve (142) arranged around the connecting through hole, the guide sleeve (142) is sleeved on the outer wall of the locking pin (810), the outer wall of the locking pin (810) is sealed with the guide sleeve (142), and along the extension direction of the second elastic reset member (820), the uppermost end of the guide sleeve (142) is located above the connecting portion between the connecting cavity (140) and the heating cavity (150).

9. The water replenishing valve according to claim 6, wherein The support portion (811) is in sealing cooperation with the inner side wall of the communication cavity (140).

10. A heat exchange device, characterized in that, It comprises a water replenishment valve as described in any one of claims 1 to 9.

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