One-way valve group and hot water system

Abstract

The utility model discloses a one-way valve set and a hot water system. The one-way valve set comprises a valve body, a plugging piece, an elastic piece and an adsorption piece, and the valve body is provided with a water inlet end, a water outlet end and a flow channel communicating with the water inlet end and the water outlet end. The plugging piece is movably mounted on the valve body and is provided with a plugging position and a conducting position; the elastic piece is connected with the plugging piece and the valve body so as to be used for exerting elastic force towards the plugging position from the conduction position on the plugging piece. The adsorption parts are arranged on one side of the plugging part at intervals and used for applying adsorption force opposite to the elastic force to the plugging part when the plugging part moves towards the conduction position so as to offset at least part of the elastic force. According to the technical scheme, the probability that the water heater is started mistakenly when cold water is used can be reduced, meanwhile, the water flow in a zero cold water circulation loop can be increased, and the heating efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a one-way valve group and a hot water system. Background Art

[0002] As people's living standards improve, hot water systems with zero cold water function are becoming more and more popular. In related technologies, hot water systems use connecting pipes to connect cold water pipes and hot water pipes to build a zero cold water circulation loop, and a one-way valve is installed on the connecting pipe to control the conduction or closing state of the hot water pipe and the cold water pipe.

[0003] However, the one-way valve in the related art is prone to the problem of mistakenly starting the cold water heater when the zero cold water function is not turned on; and when the zero cold water function is turned on, there is a problem of small water flow in the zero cold water circulation loop and slow heating speed. Utility Model Content

[0004] The main purpose of the utility model is to provide a one-way valve group, which is intended to reduce the probability of the water heater being started by mistake when using cold water, and at the same time to increase the water flow in the zero cold water circulation loop and speed up the heating efficiency.

[0005] To achieve the above-mentioned purpose, the one-way valve group proposed by the utility model includes:

[0006] A valve body, provided with a water inlet end, a water outlet end, and a flow channel connecting the water inlet end and the water outlet end;

[0007] A blocking member is movably mounted on the valve body and has a blocking position for blocking the flow channel and a conducting position for conducting the flow channel;

[0008] an elastic member, connecting the blocking member and the valve body, so as to apply an elastic force from the conducting position toward the blocking position to the blocking member; and

[0009] The adsorption member is arranged at intervals on one side of the blocking member, so as to apply an adsorption force opposite to the elastic force to the blocking member when the blocking member moves toward the conducting position, so as to offset at least part of the elastic force.

[0010] In an embodiment of the present application, when the blocking member is in the conducting position, the elastic force of the elastic member on the blocking member is greater than the adsorption force of the adsorption member on the blocking member.

[0011] In one embodiment of the present application, when the blocking member moves from the blocking position toward the conducting position, the adsorption force of the adsorption member on the blocking member tends to increase.

[0012] In one embodiment of the present application, the valve body is provided in the flow channel with a valve port for connecting the water inlet end and the water outlet end, and the blocking member is provided on a side of the valve port close to the water outlet end, and can move close to or away from the valve port to block or open the valve port;

[0013] The adsorption member is arranged at intervals on a side of the blocking member away from the valve port.

[0014] In one embodiment of the present application, the valve body comprises:

[0015] a pipe body having the water inlet end and the water outlet end, wherein the valve port is formed on the inner wall of the pipe body and communicates with the water inlet end; and

[0016] The valve sleeve is fixedly installed in the pipe body, and the valve sleeve has an inner cavity connecting the valve port and the water outlet end; the blocking member is slidably matched with the inner cavity of the valve sleeve to block or open the valve port; the adsorption member is installed at one end of the valve sleeve away from the valve port.

[0017] In an embodiment of the present application, a mounting groove is provided at one end of the valve sleeve away from the valve port, and the adsorption member is installed in the mounting groove.

[0018] In an embodiment of the present application, the elastic member is installed in the valve sleeve and connected to a side of the blocking member facing away from the valve port.

[0019] In one embodiment of the present application, the tube body includes:

[0020] A water inlet pipe section, one end of which is the water inlet end and the other end of which is provided with the valve port;

[0021] A water outlet pipe section, one end of which is sleeved outside one end of the water inlet pipe section where the valve port is provided, and the other end of which is the water outlet end; the valve sleeve is installed on the water outlet pipe section and abuts against the end of the water inlet pipe section where the valve port is provided; and

[0022] A fixing member is used to fix the water inlet pipe section and the water outlet pipe section.

[0023] In an embodiment of the present application, a sealing member is provided on a side of the blocking member facing the valve port.

[0024] In an embodiment of the present application, one of the adsorption member and the blocking member is a magnetic structure, and the other is a ferromagnetic structure.

[0025] To achieve the above object, the present application also provides a hot water system, comprising:

[0026] Water heater;

[0027] A hot water pipe connected to the water heater;

[0028] a cold water pipe connected to the water heater; and

[0029] The one-way valve group mentioned above, wherein the water inlet end is connected to the hot water pipe, and the water outlet end is connected to the cold water pipe.

[0030] In the one-way valve group of the utility model technical solution, a movable blocking member is arranged in the valve body, and the blocking member can move between a blocking position and a conducting position. By arranging an elastic member and an adsorption member in the valve body, the elastic member can apply an elastic force from the conducting position toward the blocking position to the blocking member, and the adsorption force can apply an adsorption force opposite to the elastic force to the blocking member when the blocking member is directed toward the conducting position, so as to offset at least part of the elastic force, thereby reducing the water flow resistance of the one-way valve group in the conducting state, increasing the water flow in the zero cold water circulation loop, and improving the heating efficiency; at the same time, an elastic member with a larger elastic coefficient can be used, so that the one-way valve group needs a larger pressure to push the blocking member open, to prevent hot water from entering the cold water pipeline when the cold water is turned on, thereby achieving the purpose of reducing the probability of the water heater starting by mistake when using cold water.

[0031] In addition, the adsorption part is arranged at one side of the blocking part, and generates adsorption force on the blocking part when the blocking part moves toward the conducting position. Therefore, there is a certain distance between the adsorption part and the blocking position of the blocking part. Even if impurities such as iron filings in the water pipe are adsorbed by the adsorption part, it will not affect the sealing part of the one-way valve group, that is, it will not damage the sealing surface, and thus will not affect the sealing effect of the blocking part. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of the one-way valve group of the utility model in a blocking state;

[0034] Figure 2 It is a structural schematic diagram of the one-way valve group of the utility model in the conducting state.

[0035] Description of Figure Numbers:

[0036]

[0037]

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

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

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0043] Water heaters have become one of the essential household appliances. They can provide hot water for bathing and kitchen. However, no matter how the water heater is installed, there will always be a section of water pipe between the water heater and each water terminal. When there is no water at the water point for a long time, the hot water in this section of water pipe will slowly cool down. When the water terminal uses water next time, the first thing to be released is this section of cold water. This not only wastes a lot of water resources, but also brings users an uncomfortable water experience. In related technologies, a connecting pipe is used to connect the cold water pipe and the hot water pipe to build a zero cold water circulation loop, and a circulating pump is used to realize zero cold water circulation, so that the water terminal can use hot water in time when using water. A one-way valve is installed on the connecting pipe to control the conduction or closing state of the hot water pipe and the cold water pipe to realize the opening or closing of the zero cold water function.

[0044] In existing zero cooling water systems, spring structure check valves or magnet structure check valves are usually used:

[0045] For a spring-structured one-way valve, after the one-way valve is opened, as the valve opening increases, the elastic force will increase, resulting in increased water flow resistance, causing a smaller water flow in the zero cold water circulation loop, resulting in a longer time to reach temperature stability and a slow heating speed. In order to reduce water flow resistance, a spring with a small elastic coefficient will be selected, but this will result in a lower valve opening pressure. When the cold water is turned on, hot water may flow into the cold water pipeline, causing the water heater to start by mistake when using cold water.

[0046] For the magnet structure one-way valve, since the sealing part is sealed by magnetic attraction, the magnetic attraction part is usually set at the valve port, so it is easy to absorb some impurities such as iron filings in the water pipe to the valve port, causing blockage of the water inlet and damage to the sealing surface of the one-way valve port.

[0047] Based on this, the utility model proposes a one-way valve group, which is applied to the zero cold water circulation loop in the hot water system, and is used to connect the hot water pipe and the cold water pipe, so as to reduce the probability of the water heater being started by mistake when using cold water, and at the same time can increase the water flow in the zero cold water circulation loop, speed up the heating efficiency, and avoid the valve port sealing surface of the one-way valve from being damaged. The structure of the one-way valve group is described below.

[0048] In the embodiment of the present utility model, Figure 1 and Figure 2 As shown, the one-way valve assembly includes a valve body 1, a blocking member 2, an elastic member 3 and an adsorption member 4.

[0049] The valve body 1 has a water inlet end 101, a water outlet end 102, and a flow channel connecting the water inlet end 102 and the water outlet end 102; the blocking member 2 is movably mounted on the valve body 1, and has a blocking position for blocking the flow channel and a conducting position for conducting the flow channel; the elastic member 3 connects the blocking member 2 and the valve body 1, so as to apply an elastic force from the conducting position toward the blocking position to the blocking member 2; the adsorption member 4 is arranged at one side of the blocking member 2 at intervals, so as to apply an adsorption force opposite to the elastic force to the blocking member 2 when the blocking member 2 moves toward the conducting position, so as to offset at least part of the elastic force;

[0050] When the water pressure difference between the water inlet end 101 and the water outlet end 102 is greater than the difference between the elastic force and the adsorption force, the blocking member 2 moves toward the conducting position;

[0051] When the water pressure difference between the water inlet end 101 and the water outlet end 102 is smaller than the difference between the elastic force and the adsorption force, the blocking member 2 moves toward the blocking position.

[0052] It can be understood that the water inlet end 101 is connected to the hot water pipe, and the water outlet end 102 is connected to the cold water pipe. When the zero cold water function is not turned on, the blocking piece 2 is in the blocking position, and the hot water pipe and the cold water pipe are not connected; when the zero cold water function is turned on, the water flow is driven by the circulating water pump to circulate in the zero cold water circulation loop. At this time, when the blocking piece 2 is in the conducting position, the hot water pipe and the cold water pipe are unidirectionally connected.

[0053] The elastic member 3 connects the blocking member 2 and the valve body 1. The elastic member 3 can always generate an elastic force for the blocking member 2 to move toward the blocking position, so that when the zero cold water function is not turned on, the blocking member 2 can maintain the blocking strength of the flow channel under the action of the elastic force; when the zero cold water function is turned on, the blocking member 2 moves from the blocking position to the conducting position under the pressure of the water flow, which can compress or stretch the elastic member 3; or after the zero cold water function is turned off, the blocking member 2 can be reset from the conducting position to the blocking position under the action of the elastic force. In actual application, the elastic member 3 can be a spring connected between the blocking member 2 and the valve body 1. The spring can be set on the upstream side of the blocking member 2. At this time, the spring is a tension spring, and the blocking member 2 stretches the spring when it is in the conducting position; or the spring can be set on the downstream side of the blocking member 2. At this time, the spring is a compression spring, and the blocking member 2 compresses the spring when it is in the conducting position. The specific structure of the elastic member 3 is not limited here.

[0054] The adsorbent 4 is arranged at intervals on one side of the blocking member 2. When the blocking member 2 moves toward the conducting position, the adsorbent 4 can generate an adsorption force opposite to the elastic force on the blocking member 2 to offset at least part of the elastic force on the blocking member 2, thereby reducing the water flow resistance of the one-way valve group in the conducting state, so that the opening of the one-way valve group is further increased, ensuring the water flow in the zero cold water circulation loop and achieving rapid heating. It can be understood that the adsorbent 4 can generate an adsorption force on the blocking member 2. In actual application, one of the adsorbent 4 and the blocking member 2 is a magnetic structure, and the other is a ferromagnetic structure, and magnetic attraction can be achieved between the two. As an example, the adsorbent 4 can be a magnet, and the blocking member 2 can be electrical pure iron, a permanent magnet attracted to a magnet, or other structures that can generate attraction with a magnet.

[0055] As can be seen from the above, when the one-way valve assembly is used in a zero-cold water circulation loop, the blocking member 2 will move between the blocking position and the conducting position according to whether the zero-cold water function is turned on or off:

[0056] When the zero cold water function is not activated, the elastic force on the plugging member 2 is much greater than the adsorption force, and the plugging member 2 is in the blocking position. Figure 1 ;

[0057] When the zero cold water function is turned on, the circulating water pump in the cold water circulation loop is turned on. At this time, the larger water pressure pushes the blocking member 2 away, causing the blocking member 2 to move toward the conducting position and compress or stretch the elastic member 3. At the same time, the adsorption force of the adsorption member 4 on the blocking member 2 increases to offset at least part of the elastic force. Then, the blocking member 2 will move to the conducting position under the thrust of the water flow. Figure 2 ;

[0058] When the zero cold water function is turned off, the blocking member 2 is reset to the blocking position under the action of elastic force. Figure 1 .

[0059] It should be noted that when the blocking member 2 moves toward the conducting position, the elastic force exerted on the blocking member 2 can be at least partially offset by the adsorption force. Compared with the solution using a single spring structure in the prior art, this embodiment can reduce the water flow resistance and increase the water flow in the zero cold water circulation loop. Based on this, this embodiment can use an elastic member 3 with a larger elastic coefficient. In this way, the blocking ability of the blocking member 2 can be improved, so that the one-way valve group requires a larger pressure to push the blocking member 2 open, thereby increasing the valve opening pressure to prevent hot water from entering the cold water pipeline when the cold water is turned on, thereby achieving the purpose of reducing the probability of the water heater starting up incorrectly when using cold water.

[0060] In addition, the adsorption component 4 is arranged at a distance on one side of the blocking component 2, and when the blocking component 2 moves toward the conducting position, an adsorption force is generated on the blocking component 2, so there is a certain distance between the adsorption component 4 and the blocking position of the blocking component 2. Compared with the solution in the prior art that the adsorption component 4 is arranged at the valve port to adsorb the blocking component 2 to achieve sealing, in this embodiment, even if impurities such as iron filings in the water pipe are adsorbed by the adsorption component 4, it will not affect the sealing part of the one-way valve group, that is, it will not damage the sealing surface, thereby not affecting the sealing effect of the blocking component 2.

[0061] In summary, in the one-way valve group of the technical solution of the utility model, a movable blocking member 2 is arranged in the valve body 1, and the blocking member 2 can move between a blocking position and a conducting position. By arranging an elastic member 3 and an adsorption member 4 in the valve body 1, the elastic member 3 can apply an elastic force from the conducting position toward the blocking position to the blocking member 2, and the adsorption force 4 can apply an adsorption force opposite to the elastic force to the blocking member 2 when the blocking member 2 is directed toward the conducting position, so as to offset at least part of the elastic force, thereby reducing the water flow resistance of the one-way valve group in the conducting state, increasing the water flow in the zero cold water circulation loop, and improving the heating efficiency; at the same time, an elastic member 3 with a larger elastic coefficient can be used, so that the one-way valve group needs a larger pressure to push the blocking member 2 open, to prevent hot water from entering the cold water pipeline when the cold water is turned on, thereby achieving the purpose of reducing the probability of the water heater starting by mistake when using cold water. In addition, the adsorption component 4 is arranged at a distance on one side of the blocking component 2, and generates an adsorption force on the blocking component 2 when the blocking component 2 moves toward the conducting position. Therefore, there is a certain distance between the adsorption component 4 and the blocking position of the blocking component 2. Even if impurities such as iron filings in the water pipe are adsorbed by the adsorption component 4, it will not affect the sealing part of the one-way valve group, that is, it will not damage the sealing surface, and thus will not affect the sealing effect of the blocking component 2.

[0062] In one embodiment of the present application, Figure 1 and Figure 2 When the blocking member 2 is in the conducting position, the elastic force of the elastic member 3 on the blocking member 2 is greater than the adsorption force of the adsorption member 4 on the blocking member 2 .

[0063] It can be understood that when the zero cold water function is turned on, under the output of the circulating water pump, the water flow will push the blocking member 2 to move toward the conducting position, and when it moves to the conducting position, the elastic force generated by the elastic member 3 is the largest. In this embodiment, by setting the elastic force of the elastic member 3 on the blocking member 2 to be greater than the adsorption force of the adsorption member 4 on the blocking member 2 when the zero cold water function is turned off (the circulating water pump stops working), the blocking member 2 can be smoothly reset to the blocking position under the elastic force of the elastic member 3, so that the one-way valve group remains in a closed state, preventing hot water from entering the cold water and causing the water heater to start by mistake.

[0064] In one embodiment of the present application, Figure 1 and Figure 2 In the process that the blocking member 2 moves from the blocking position to the conducting position, the adsorption force of the adsorption member 4 on the blocking member 2 tends to increase.

[0065] When the zero cold water function is turned on, the plugging member 2 moves from the blocking position to the conducting position, and the one-way valve group is in a one-way conducting state from the hot water pipe to the cold water pipe. As the plugging member 2 moves, the elastic force of the elastic member 3 on the plugging member 2 will gradually increase. By increasing the adsorption force of the adsorption member 4 on the plugging member 2 as the plugging member 2 moves, more elastic forces will be offset, so that the plugging member 2 can move to the conducting position more quickly, so that the one-way valve group can open a larger opening, thereby reducing the water flow resistance of the one-way valve group, thereby increasing the zero cold water circulation water volume and achieving rapid heating.

[0066] It should be noted that, with the movement of the blocking member 2, both the elastic force and the adsorption force increase. Therefore, in order to achieve a better effect of reducing resistance, the increase rate of the adsorption force can be set to be greater than the increase rate of the elastic force.

[0067] In one embodiment of the present application, Figure 1 and Figure 2 The valve body 1 is provided with a valve port 103 in the flow channel for connecting the water inlet end 101 and the water outlet end 102. The blocking member 2 is provided on a side of the valve port 103 close to the water outlet end 102 and can move close to or away from the valve port 103 to block or open the valve port 103; the adsorption member 4 is provided at intervals on a side of the blocking member 2 away from the valve port 103.

[0068] It can be understood that the valve body 1 is provided with a valve port 103, and the valve port 103 can be realized by a boss structure provided in the valve body 1 toward the flow channel. The blocking member 2 cooperates with the valve port 103 to realize the function of opening or blocking the flow channel. Specifically, the blocking member 2 is arranged on the side of the valve port 103 close to the water outlet 102, so when the blocking member 2 blocks the valve port 103, the blocking member 2 is in a blocking position; when the blocking member 2 is away from the valve port 103, the blocking member 2 is in a conducting position.

[0069] In this embodiment, the adsorption component 4 is spaced apart on the side of the blocking component 2 away from the valve port 103. When the blocking component 2 moves toward the conducting position, the distance between the adsorption component 4 and the blocking component 2 is shortened, so that the adsorption force of the adsorption component 4 on the blocking component 2 gradually increases, thereby offsetting more elastic force and reducing the water flow resistance when the one-way valve group is in the conducting state.

[0070] In addition, the adsorption component 4 is spaced apart on the side of the sealing component 2 away from the valve port 103, so that there is a certain distance between the adsorption component 4 and the valve port 103. Therefore, even if impurities such as iron filings in the water pipe are adsorbed by the adsorption component 4, the sealing surface of the valve port 103 will not be damaged, thereby ensuring the sealing effect of the sealing component 2 on the valve port 103.

[0071] In order to further improve the sealing effect of the blocking member 2 on the valve port 103, a sealing member 21 is provided on the side of the blocking member 2 facing the valve port 103. Optionally, the sealing member 21 is a soft structure such as a rubber cap or a silicone cap.

[0072] In one embodiment of the present application, Figure 1 and Figure 2 The valve body 1 includes a tube body 11 and a valve sleeve 12. The tube body 11 has a water inlet end 101 and a water outlet end 102. The valve port 103 is formed on the inner wall of the tube body 11 and is connected with the water inlet end 101. The valve sleeve 12 is fixedly installed in the tube body 11. The valve sleeve 12 has an inner cavity connecting the valve port 103 and the water outlet end 102. The blocking member 2 is slidably matched with the inner cavity of the valve sleeve 12 to block or open the valve port 103. The adsorption member 2 is installed at one end of the valve sleeve 12 away from the valve port 103.

[0073] This embodiment illustrates the structure of the valve body 1 by way of example. The two ends of the tube body 11 are respectively the water inlet end 101 and the water outlet end 103. The valve sleeve 12 is installed in the tube body 11, and the water inlet end 101 and the water outlet end 103 are connected through the inner cavity of the valve sleeve 12. By arranging a slidable plugging member 2 in the valve sleeve 12, the function of plugging or opening the valve port 103 is realized. It can be understood that the valve sleeve 12 plays the role of installing the plugging member 2 and the adsorbing member 4. The valve sleeve 12 is a cylindrical structure, and one end thereof connected to the valve port 103 is open. The plugging member 2 is slidably matched with the inner wall of the valve sleeve 12. The adsorbing member 4 is installed at one end of the valve sleeve 12 away from the valve port 103. Therefore, when the plugging member 2 moves away from the valve port 103, the plugging member 2 moves close to the adsorbing member 4, so that the adsorption force becomes larger and larger. Furthermore, the side wall of the valve sleeve 12 is provided with an opening 104 connecting its inner cavity and the water outlet 103 . When the blocking member 2 opens the valve port 103 , water flows from the water inlet 101 , the valve port 103 , the inner cavity, the opening 104 to the water outlet 102 in sequence.

[0074] In actual application, the valve sleeve 12 can be fixed to the pipe body 11 by buckling, welding or interference fixing.

[0075] Furthermore, if Figure 1 and Figure 2 , the end of the valve sleeve 12 away from the valve port 103 is provided with a mounting groove 121, and the adsorbent 4 is installed in the mounting groove 121. In this way, the adsorbent 4 can be installed at intervals on the side of the blocking member 2 away from the valve port 103, so that when the blocking member 2 is in the blocking position, the distance between the adsorbent 4 and the blocking member 2 is the longest, and the adsorption force between the two is the smallest, thereby further eliminating the influence of the adsorption force on the blocking member 2 in the blocking position, achieving the purpose of high opening pressure of the one-way valve group, and reducing the probability of false start-up of the cold water heater. Optionally, the adsorbent 4 is installed in the mounting groove 121 with interference fit.

[0076] Based on the above embodiments, in actual application, the elastic member 3 may be connected between the blocking member 2 and the pipe body 11 , or the elastic member 3 may also be connected between the blocking member 2 and the valve sleeve 12 .

[0077] As an example, considering the convenience of installation and structural reliability, the elastic member 3 is installed in the valve sleeve 12 and connected to the side of the plugging member 2 away from the valve port 103. In this way, during installation, the elastic member 3 can be directly placed in the valve sleeve 12, and then the plugging member 2 and the adsorbent 4 are installed, and then the valve sleeve 12 is installed in the pipe body 11. Therefore, there is no need to set up an additional installation structure of the elastic member 3 inside the pipe body 11, which can simplify the structural design and improve the assembly efficiency.

[0078] In order to further improve assembly efficiency, Figure 1 and Figure 2 The pipe body 11 includes an inlet pipe section 111, an outlet pipe section 112 and a fixing member 113. One end of the inlet pipe section 111 is a water inlet end 101, and the other end is provided with a valve port 103; one end of the outlet pipe section 112 is sleeved on the outside of one end of the inlet pipe section 111 where the valve port 103 is provided, and the other end is a water outlet end 102; the valve sleeve 12 is installed on the outlet pipe section 112 and abuts against the end of the inlet pipe section 111 where the valve port 103 is provided; the fixing member 113 fixes the inlet pipe section 111 and the outlet pipe section 112 in connection.

[0079] In this embodiment, the pipe body 11 is configured to be composed of a separate water inlet pipe section 111 and a water outlet pipe section 112, and the fixing parts 113 are used to fix them together, so that it is easier to install the valve sleeve 12 structure inside the pipe body 11. In actual application, the elastic member 3, the blocking member 2 and the adsorbing member 4 can be installed to the valve sleeve 12 first, and then the valve sleeve 12 can be installed in the water outlet pipe section 112, and then the water outlet pipe section 112 can be assembled with the water inlet pipe section 111, so that the end of the valve sleeve 12 can abut against the end of the valve port 103 of the water inlet pipe section 111, so that the valve port 103 can be connected to the inner cavity of the valve sleeve 12, and finally the water inlet pipe section 111 and the water outlet pipe section 112 can be fixedly connected by the fixing parts 113 to realize the assembly of the one-way valve group.

[0080] Optionally, the fixing member 113 may be a clamping structure, a bolt structure or other fixing structures.

[0081] In actual application, in order to ensure the sealing effect, a sealing ring 13 can be provided at the matching position of the water inlet pipe section 111 and the water outlet pipe section 112 to avoid water leakage.

[0082] The utility model also provides a hot water system, which includes a water heater, a hot water pipe, a cold water pipe and a one-way valve group. The specific structure of the one-way valve group refers to the above embodiment. Since the hot water system adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the hot water pipe is connected to the water heater, the cold water pipe is connected to the water heater, the water inlet end 101 of the one-way valve group is connected to the hot water pipe, and the water outlet end 102 is connected to the cold water pipe.

[0083] In this embodiment, the hot water pipe, the one-way valve group, the cold water pipe and the water heater are connected to form a zero cold water circulation loop, and the circulation power is provided by the circulating water pump. When the circulating water pump is not turned on, the one-way valve group of this embodiment can remain in a blocked state to prevent hot water from entering the cold water pipe when using cold water, thereby avoiding the water heater from being started by mistake. When the circulating water pump is turned on, the one-way valve group of this embodiment can reduce fluid resistance in the conductive state, increase the zero cold water circulation water volume, and achieve rapid heating.

[0084] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A one-way valve assembly, characterized in that: include: A valve body, provided with a water inlet end, a water outlet end, and a flow channel connecting the water inlet end and the water outlet end; A blocking member is movably mounted on the valve body and has a blocking position for blocking the flow channel and a conducting position for conducting the flow channel; an elastic member, connecting the blocking member and the valve body, and used for applying an elastic force from the conducting position toward the blocking position to the blocking member; as well as The adsorption member is arranged at intervals on one side of the blocking member, so as to apply an adsorption force opposite to the elastic force to the blocking member when the blocking member moves toward the conducting position, so as to offset at least part of the elastic force.

2. The one-way valve assembly according to claim 1, characterized in that: When the blocking member is in the conducting position, the elastic force of the elastic member on the blocking member is greater than the adsorption force of the adsorption member on the blocking member.

3. The one-way valve assembly according to claim 2, characterized in that: When the blocking member moves from the blocking position toward the conducting position, the adsorption force of the adsorption member on the blocking member tends to increase.

4. The one-way valve assembly according to claim 3, characterized in that: The valve body is provided with a valve port in the flow channel for connecting the water inlet end and the water outlet end, and the blocking member is provided on a side of the valve port close to the water outlet end, and can move close to or away from the valve port to block or open the valve port; The adsorption member is arranged at intervals on a side of the blocking member away from the valve port.

5. The one-way valve assembly according to claim 4, characterized in that: The valve body comprises: a pipe body having the water inlet end and the water outlet end, wherein the valve port is formed on the inner wall of the pipe body and communicated with the water inlet end; and The valve sleeve is fixedly installed in the pipe body, and the valve sleeve has an inner cavity connecting the valve port and the water outlet end; the blocking member is slidably matched with the inner cavity of the valve sleeve to block or open the valve port; the adsorption member is installed at one end of the valve sleeve away from the valve port.

6. The one-way valve assembly according to claim 5, characterized in that: An installation groove is provided at one end of the valve sleeve away from the valve port, and the adsorption member is installed in the installation groove.

7. The one-way valve assembly according to claim 5, characterized in that: The elastic member is installed in the valve sleeve and connected to a side of the blocking member facing away from the valve port.

8. The one-way valve assembly according to any one of claims 5 to 7, characterized in that: The tube body comprises: A water inlet pipe section, one end of which is the water inlet end and the other end of which is provided with the valve port; A water outlet pipe section, one end of which is sleeved outside one end of the water inlet pipe section where the valve port is provided, and the other end of which is the water outlet end; the valve sleeve is installed on the water outlet pipe section and abuts against the end of the water inlet pipe section where the valve port is provided; and A fixing member is used to fix the water inlet pipe section and the water outlet pipe section.

9. The one-way valve assembly according to any one of claims 4 to 7, characterized in that: A sealing member is provided on one side of the blocking member facing the valve port.

10. The one-way valve assembly according to any one of claims 1 to 7, characterized in that: One of the adsorption member and the blocking member is a magnetic structure, and the other is a ferromagnetic structure.

11. A hot water system, characterized in that: include: Water heater; A hot water pipe connected to the water heater; A cold water pipe connected to the water heater; as well as The one-way valve assembly according to any one of claims 1 to 10, wherein the water inlet end is connected to the hot water pipe, and the water outlet end is connected to the cold water pipe.

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