Water inlet valve and heating water heater

Abstract

The present invention belongs to the technical field of water heaters, and specifically relates to a water inlet valve and a heating water heater. The present invention aims to solve the technical problem that when adding an automatic water replenishment function to an existing heating water heater, it is necessary to add a pipeline to the water inlet valve and an external solenoid valve, resulting in a complex pipeline structure. The water inlet valve of the present invention includes a first valve body and a second valve body, wherein the first valve body is provided with a water inlet pipe, a heating water inlet passage and a heating return water channel to realize domestic water inlet, heating water inlet and heating return water; and the second valve body is provided with a first replenishment channel, a second replenishment channel and a zero cold water channel, and an automatic water replenishment valve, a manual water replenishment valve and a one-way valve are respectively installed to realize automatic water replenishment, manual water replenishment and domestic water outflow and return. The water inlet valve of the present invention includes two valve bodies that are sealed and connected, and integrates an automatic water replenishment function without the need for additional pipelines, thereby simplifying the pipeline layout of the water inlet valve.

Description

Technical Field

[0001] The invention belongs to the technical field of water heaters, and in particular relates to a water inlet valve and a heating water heater. Background Art

[0002] The heating water heater includes two independent pipes, the domestic water pipe and the heating water pipe. The two independent pipes exchange heat in the heat exchanger to heat the water in the pipes. The hot water in the domestic water pipe is used for bathing, kitchen cleaning, etc. The hot water in the heating water pipe circulates to transfer heat indoors. The heating water heater is equipped with a water inlet valve to discharge the water in the tap water pipe into the domestic water pipe and the heating water pipe.

[0003] When adding the automatic water replenishment function to the existing heating water heater, it is necessary to add a pipeline to the water inlet valve, set a solenoid valve on the pipeline, and an external solenoid valve is required, which makes the pipeline connection complicated.

[0004] Accordingly, the art needs a new water inlet valve and a heating water heater to solve the above problems. Summary of the invention

[0005] In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problem that when adding an automatic water replenishment function to the existing heating water heater, it is necessary to add pipelines to the water inlet valve and require an external solenoid valve, resulting in a complicated pipeline structure, the present invention provides a water inlet valve and a heating water heater.

[0006] The water inlet valve comprises: a first valve body and a second valve body; the first valve body is provided with a water inlet channel, a heating inlet, a first interface and a second interface, the first interface is provided on the side wall of the water inlet channel, and a heating water inlet passage is formed between the second interface and the heating inlet; the second valve body comprises a valve body, a first joint sealedly connected to the first interface and a second joint sealedly connected to the second interface, the first joint is provided with a first connecting channel communicating with the first interface, and the second joint is provided with a second connecting channel communicating with the second interface; a first water replenishment channel, a second water replenishment channel and a zero cold water channel are provided in the valve body, the first water replenishment channel is connected with the first connecting channel and the second connecting channel, and an automatic water replenishment valve is provided in the first water replenishment channel, and the automatic water replenishment valve can open or block the first water replenishment channel; the second water replenishment channel is connected with the first connecting channel and the second connecting channel, and a manual water replenishment valve is provided in the second water replenishment channel, and the manual water replenishment valve can open or block the second water replenishment channel; the zero cold water channel is connected with the first connecting channel, and a one-way valve is provided in the zero cold water channel.

[0007] In an optional technical solution of the above-mentioned water inlet valve, the automatic water replenishment valve includes a driving motor and a first valve core drivingly connected to the driving motor; the first water replenishment channel includes a first installation channel and a first passage, one end of the first installation channel is sealingly installed with the driving motor, and the other end of the first installation channel is provided with a first port communicating with the first connecting channel; the first passage connects the first installation channel and the second connecting channel; the driving motor drives the first valve core to move axially along the first installation channel so that the first valve core abuts against the first port to block the first installation channel, or so that the first valve core moves away from the first port to open the first installation channel.

[0008] In an optional technical solution of the above-mentioned water inlet valve, a sealing ring is provided on the side of the first port facing the driving motor; the first valve core includes a push rod and an abutment ring arranged on the outside of the push rod, one end of the push rod is transmission-connected to the driving motor, and the other end of the push rod is passed through the sealing ring and the first port; the driving motor drives the push rod to move axially along the first mounting channel so that the abutment ring abuts against the sealing ring to block the first mounting channel, or so that the abutment ring moves away from the sealing ring to open the first mounting channel.

[0009] In an optional technical solution of the above-mentioned water inlet valve, the second water replenishment channel includes a connected second installation channel and a second passage; the second installation channel is connected to the second connecting channel, and the second installation channel is provided with an internal threaded portion; the second passage is connected to the first connecting channel; the manual water replenishment valve includes a second valve core, the second valve core includes a sealing portion and an external threaded portion threadedly connected to the internal threaded portion, and the second valve core can move axially relative to the second installation channel so that the sealing portion approaches and blocks the second passage, or so that the sealing portion moves away from and opens the second passage.

[0010] In the optional technical solution of the above-mentioned water inlet valve, the manual water supply valve also includes a third sealing ring located between the sealing portion and the external threaded portion; a portion of the second installation channel between the third sealing ring and the second aisle forms a third aisle, and the third aisle connects the first aisle and the second connecting channel.

[0011] In an optional technical solution of the above-mentioned water inlet valve, a first socket and a second socket are arranged opposite to each other on the side wall of the second installation channel, and the first socket and the second socket are located on the side of the internal threaded portion away from the third aisle; the manual water supply valve also includes a first limit buckle, which is passed through the first socket, the second installation channel and the second socket to resist the external threaded portion.

[0012] In the optional technical solution of the above-mentioned water inlet valve, the water inlet valve also includes a return water joint and a second limit buckle, a fourth sealing ring is arranged between the return water joint and the zero cold water channel, and the return water joint is fixed to the zero cold water channel by the second limit buckle; the one-way valve is installed in the return water joint.

[0013] In the optional technical scheme of the above-mentioned water inlet valve, the first joint is provided with a first slot, and a first sealing ring is provided between the first slot and the end face of the first joint; the second joint is provided with a second slot, and a second sealing ring is provided between the second slot and the end face of the second joint; the first valve body is provided with a mounting socket, and the mounting socket is provided with a mounting slot; the first interface and the second interface are both provided on the mounting socket; the water inlet valve also includes a fixing plate, and the fixing plate includes a first plug-in portion and a second plug-in portion, the first plug-in portion is respectively inserted into the mounting slot and the first slot, and the second plug-in portion is respectively inserted into the mounting slot and the second slot.

[0014] In the optional technical solution of the above-mentioned water inlet valve, a tap water interface, a domestic water inlet and a heating return water channel are also provided on the first valve body, and the water inlet channel is formed between the tap water interface and the domestic water inlet; a water inlet valve core assembly is provided in the water inlet channel; the first interface is located between the water inlet valve core assembly and the domestic water inlet; the heating return water channel is connected to the heating water inlet passage.

[0015] The heating water heater includes: a controller, a heat exchanger and the above-mentioned water inlet valve, the heat exchanger includes a domestic water port and a heating water port, the domestic water port is connected to the water inlet channel of the water inlet valve, and the heating water port is connected to the heating inlet of the water inlet valve; the controller is electrically connected to the automatic water replenishing valve, and the controller is configured to control the automatic water replenishing valve to connect or isolate the first connecting channel and the second connecting channel.

[0016] Those skilled in the art can understand that the heating water heater of the present invention includes a controller, a heat exchanger and a water inlet valve. The water in the tap water pipe enters the heat exchanger through the water inlet valve, and the controller is electrically connected to the automatic water replenishment valve of the water inlet valve to control the automatic water replenishment valve to supply water to the heating water pipeline. Specifically, the water inlet valve includes a first valve body and a second valve body, wherein the first valve body is provided with a water inlet pipe, a heating water inlet passage and a heating water return passage, so as to realize domestic water inlet, heating water inlet and heating water return; and the first valve body is provided with a first interface and a second interface, which are respectively sealed and connected with the first joint and the second joint on the second valve body, so that the first connection channel in the first joint is connected with the first interface, and the second connection channel in the second joint is connected with the second interface; the second valve body is provided with a first water replenishment channel, a second water replenishment channel and a zero cold water channel, the first water replenishment channel is installed with an automatic water replenishment valve, and automatic water replenishment is realized under the control of the controller; the second water replenishment channel is installed with a manual water replenishment valve, and manual water replenishment is realized; a one-way valve is installed in the zero cold water channel, so that the cold water in the domestic water outlet pipeline flows back to the water inlet valve, so as to avoid water resource waste, and make the domestic water outlet be hot water. The water inlet valve of the embodiment of the present invention includes two valve bodies in a sealed connection, and integrates an automatic water replenishment function without the need for additional pipelines, thereby simplifying the pipeline layout of the water inlet valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the water inlet valve and the heating water heater of the present invention are described below with reference to the accompanying drawings and in combination with the heating water heater.

[0018] Figure 1 is an exploded view of a water inlet valve according to an embodiment of the present invention;

[0019] Figure 2 is a front view of a water inlet valve according to an embodiment of the present invention;

[0020] Figure 3 yes Figure 2 Middle AA section view;

[0021] Figure 4 yes Figure 2 Middle BB section view;

[0022] Figure 5 yes Figure 2 Middle CC section view;

[0023] Figure 6 is a schematic structural diagram of a first valve body of a water inlet valve according to an embodiment of the present invention;

[0024] Figure 7 is a schematic structural diagram of a second valve body of a water inlet valve according to an embodiment of the present invention;

[0025] Figure 8 4 is a cross-sectional view of a second valve body of a water inlet valve according to an embodiment of the present invention.

[0026] In the attached drawings: 100, first valve body; 110: water inlet channel; 111: heating inlet; 112: first interface; 113: second interface; 120: heating water inlet passage; 130: heating return water channel; 140: tap water interface; 150: domestic water inlet; 151: domestic water connector; 152: third limit buckle; 160: water inlet valve core assembly; 161: valve core shell; 1611: port; 162: rotor; 163: gland; 164 : filter; 165: fifth sealing ring; 166: sixth sealing ring; 167: fourth limit buckle; 170: mounting socket; 171: mounting slot; 200: second valve body; 210: valve body; 211: first water replenishment channel; 2111: first installation channel; 2112: first aisle; 2113: first port; 2114: blocking ring; 212: second water replenishment channel; 2121: second installation channel; 2122: second aisle; 2123: third passage; 2124: fourth passage; 2125: internal thread; 213: zero cold water passage; 220: first joint; 221: first connecting passage; 222: first slot; 223: first sealing ring; 230: second joint; 231: second connecting passage; 232: second slot; 233: second sealing ring; 240: automatic water replenishment valve; 241: driving motor; 242: first valve core; 2421: ejector rod; 24 22: abutment ring; 250: manual water supply valve; 251: second valve core; 2511: sealing part; 2512: external threaded part; 252: valve stem; 253: third sealing ring; 260: one-way valve; 261: return water joint; 262: second limit buckle; 263: fourth sealing ring; 270: first limit buckle; 271: first plug hole; 272: second plug hole; 300: fixing plate; 310: first plug part; 320: second plug part. DETAILED DESCRIPTION

[0027] First, it should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific applications. For example, although the water inlet valve of the present invention is described in conjunction with a heating water heater, this is not limiting. Other heating devices that can simultaneously provide heating and heat domestic water and have two independent pipelines can be equipped with the water inlet valve of the present invention, such as a wall-mounted boiler, a heating furnace, etc.

[0028] Secondly, it should be noted that in the description of the present invention, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0029] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The heating water heater includes two independent pipes, the domestic water pipe and the heating water pipe. The two independent pipes exchange heat in the heat exchanger to heat the water in the pipes. The hot water in the domestic water pipe is used for bathing, kitchen cleaning, etc. The hot water in the heating water pipe circulates to transfer heat indoors. The heating water heater is equipped with a water inlet valve to supply water to the domestic water pipe and the heating water pipe respectively.

[0031] The existing water inlet valve is usually provided with a tap water inlet, a domestic water inlet, a heating water inlet and a heating return water inlet, wherein the tap water inlet is used to communicate with the tap water pipeline, and the domestic water inlet is used to communicate with the domestic water pipeline, so that the water in the domestic water pipeline is heated after passing through the heat exchanger, and finally flows out through the kitchen faucet or bathroom shower head, etc. The heating water inlet is used to communicate with the heating water pipeline, so that the water in the heating water pipeline is heated after passing through the heat exchanger, and after passing through heating equipment such as radiators, the water temperature in the heating water pipeline is reduced, and enters the water supply valve through the heating return water inlet, and then enters the heating water pipeline through the heating water inlet, and so on. The cycle is repeated to heat the room.

[0032] Since the heating water heater is a certain distance away from the kitchen or bathroom, there is cold water in the pipeline between the domestic water outlet of the heating water heater and the kitchen faucet or bathroom shower head, and a lot of cold water needs to be drained to produce hot water, which not only affects the user's use of hot water, but also wastes water. Usually, the heating water heater is provided with a reflux pipe to return the cold water in the pipeline between the domestic water outlet of the heating water heater and the kitchen faucet or bathroom shower head to the water inlet valve for reheating. That is to say, the water inlet valve is also provided with a connection port for the reflux pipe.

[0033] In addition, the water inlet valve is also provided with a water replenishment port for the heating water pipeline. When the water pressure of the heating water pipeline is lower than the target value, the heating water pipeline is replenished with water through the water replenishment port. The existing water inlet valve is provided with a valve body, and the above-mentioned ports are all provided on the valve body, resulting in a complex valve body structure and great difficulty in processing.

[0034] There are two existing water replenishment methods. One is to set a manual water replenishment valve at the water replenishment port. The user can replenish the heating water pipeline by operating the manual water replenishment valve. However, this water replenishment method is not timely and affects the safety of the heating water pipeline. The other is to set an automatic water replenishment valve at the water replenishment port. Specifically, a pipeline is added to the water inlet valve, and a solenoid valve is set on the pipeline. The opening and closing of the water replenishment port is controlled by the solenoid valve to achieve automatic water replenishment. This not only makes the pipeline connection complicated.

[0035] In view of this, an embodiment of the present invention provides a water inlet valve and a heating water heater, wherein the water inlet valve includes a first valve body and a second valve body that are sealed and connected. The first valve body is provided with a tap water interface, a water inlet channel, a heating water inlet passage, and a heating return water passage. The water from the tap water interface passes through the water inlet passage and enters the domestic water pipeline after being filtered. The heating return water passage is connected to the heating water inlet passage to realize the circulation of the heating pipeline. The second valve body is provided with an automatic water replenishment valve, a manual water replenishment valve, and a one-way valve connected to the return pipe. The automatic water replenishment valve and the manual water replenishment valve can be used to allow the water in the water inlet passage to enter the heating water pipeline through the heating water inlet passage. The cold water in the domestic water pipeline enters the water inlet passage through the return pipe and the one-way valve and is reheated, so that the domestic water outlet is hot water. The water inlet valve of this embodiment does not need to be provided with additional pipelines, simplifying the pipeline layout.

[0036] The embodiment of the present invention provides a heating water heater, which includes a controller, a heat exchanger and a water inlet valve, wherein the heat exchanger includes a domestic water port and a heating water port, and the domestic water port and the heating water port are respectively connected to the water inlet valve, so that the water in the water inlet valve enters the domestic water pipeline through the domestic water port and the heating water pipeline through the heating water port. The controller is used to control the working state of the automatic water replenishment valve of the water inlet valve, and of course the controller is also used to control the working state of other components of the heat exchanger, such as a burner, a circulating pump, etc.

[0037] The preferred technical solution of the water inlet valve of the present invention is described below in conjunction with the above-mentioned heating water heater.

[0038] Figure 1 is an exploded view of a water inlet valve according to an embodiment of the present invention; Figure 2 is a front view of a water inlet valve according to an embodiment of the present invention; Figure 3 yes Figure 2 Middle AA section view; Figure 4 yes Figure 2 Middle BB section view; Figure 5 yes Figure 2 Middle CC section view; Figure 6 is a schematic structural diagram of a first valve body of a water inlet valve according to an embodiment of the present invention; Figure 7 is a schematic structural diagram of a second valve body of a water inlet valve according to an embodiment of the present invention; Figure 8 4 is a cross-sectional view of a second valve body of a water inlet valve according to an embodiment of the present invention.

[0039] like Figure 1 and Figure 2 As shown, the water inlet valve of the present invention includes a first valve body 100 and a second valve body 200 .

[0040] Combination Figure 3 and Figure 6 The first valve body 100 is provided with a water inlet channel 110, a heating inlet 111, a first interface 112 and a second interface 113. The first interface 112 is provided on the side wall of the water inlet channel 110, so that the first interface 112 is connected with the water inlet channel 110. A heating water inlet passage 120 is formed between the second interface 113 and the heating inlet 111, and the heating inlet 111 is connected with the heating water port of the heat exchanger.

[0041] In this embodiment, the heating water inlet passage 120 includes a first portion of pipes and a second portion of pipes, wherein the first portion of pipes is coaxial with the second interface 113, and the second portion of pipes is perpendicular to the first portion of pipes. Such an arrangement facilitates the connection between the heating inlet 111 and the heating water port of the heat exchanger, and provides sufficient connection space for the connection between the heating inlet 111 and the heating water port of the heat exchanger.

[0042] Combination Figure 1 The second valve body 200 includes a valve body 210, a first connector 220 and a second connector 230. Optionally, the valve body 210, the first connector 220 and the second connector 230 are integrally formed as one piece, which is conducive to improving the structural strength and sealing of the second valve body 200.

[0043] Combination Figure 4 The first joint 220 is sealed and connected to the first interface 112. The first joint 220 is fixedly connected to the first interface 112, and the first joint 220 and the first interface 112 are sealed to prevent water leakage. The first joint 220 is provided with a first connecting channel 221, and the first connecting channel 221 is connected to the first interface 112, so that the first connecting channel 221 is connected to the water inlet channel 110 through the first interface 112.

[0044] Combination Figure 4The second joint 230 is sealed and connected to the second interface 113. The second joint 230 is fixedly connected to the second interface 113, and the second joint 230 and the second interface 113 are sealed to prevent water leakage. The second joint 230 is provided with a second connecting channel 231, and the second connecting channel 231 is connected to the second interface 113. In this way, the second connecting channel 231 is connected to the heating water inlet passage 120.

[0045] Reference Figure 7 and Figure 8 A first water replenishment channel 211 , a second water replenishment channel 212 and a zero cold water channel 213 are provided in the valve body 210 .

[0046] Regarding the realization of the automatic water replenishment function: the first water replenishment channel 211 is connected to the first connection channel 221 and the second connection channel 231, and an automatic water replenishment valve 240 is arranged in the first water replenishment channel 211. The automatic water replenishment valve 240 operates under the control of the controller and can open the first water replenishment channel 211, so that the first connection channel 221 is connected to the second connection channel 231 through the first water replenishment channel 211, so that the water in the water inlet channel 110 can enter the heating water inlet passage 120 through the first interface 112, the first connection channel 221, the first water replenishment channel 211, and the second connection channel 231, so as to replenish the heating pipeline. Of course, the automatic water replenishment valve 240 can block the first water replenishment channel 211, at this time, the first connection channel 221 and the second connection channel 231 are separated and not connected, and the water in the water inlet channel 110 cannot enter the heating water inlet passage 120.

[0047] Regarding the realization of the manual water replenishment function: the second water replenishment channel 212 is connected to the first connection channel 221 and the second connection channel 231, and a manual water replenishment valve 250 is provided in the second water replenishment channel 212. The manual water replenishment valve 250 can open the second water replenishment channel 212, so that the first connection channel 221 is connected to the second connection channel 231 through the second water replenishment channel 212, so that the water in the water inlet channel 110 can enter the heating water inlet passage 120 through the first interface 112, the first connection channel 221, the second water replenishment channel 212, and the second connection channel 231, so as to replenish the heating pipeline. Of course, the manual water replenishment valve 250 can block the second water replenishment channel 212, at this time, the first connection channel 221 and the second connection channel 231 are separated and not connected, and the water in the water inlet channel 110 cannot enter the heating water inlet passage 120.

[0048] Regarding the realization of the zero cold water function: the zero cold water channel 213 is connected to the first connecting channel 221, and a one-way valve 260 is arranged in the zero cold water channel 213; and, the water inlet end of the one-way valve 260 is connected to the return pipe of the heating water heater, so that the water in the pipeline between the domestic water outlet of the heat exchanger and the water outlet end such as the faucet re-enters the first connecting channel 221 through the return pipe, the one-way valve 260, and the zero cold water channel 213, and then re-enters the heat exchanger through the first connecting channel 221 and the water inlet channel 110 for heating, thereby avoiding water resource waste, and also allowing the water outlet end such as the water cooling head and the shower nozzle to output hot water, thereby improving the user experience.

[0049] The one-way valve 260 can allow the water in the return pipe to flow to the zero cold water channel 213 , thereby preventing the water in the zero cold water channel 213 from flowing into the return pipe.

[0050] Optional, see Figure 7 , the first water replenishment channel 211, the second water replenishment channel 212 and the zero cold water channel 213 are perpendicular to each other. For example, when the first water replenishment channel 211, the second water replenishment channel 212 and the zero cold water channel 213 are all circular channels, the central axes of the first water replenishment channel 211, the second water replenishment channel 212 and the zero cold water channel 213 are perpendicular to each other. This facilitates the installation of the automatic water replenishment valve 240, the manual water replenishment valve 250 and the one-way valve 260 to avoid mutual interference.

[0051] The water inlet valve of this embodiment is provided with a detachable first valve body 100 and a second valve body 200, and a water inlet channel 110, a heating inlet 111, and a heating water inlet passage 120 are provided on the first valve body 100. In addition, a first connecting channel 221, a second connecting channel 231, a first water replenishment channel 211, a second water replenishment channel 212 and a zero cold water channel 213 are provided on the second valve body 200. The water inlet function of domestic water and heating water, the automatic water replenishment function of heating water, the manual water replenishment function of heating water and the zero cold water function are integrated, and no additional piping is required, and the structure is simple.

[0052] In some implementations, reference Figure 1 , Figure 4 as well as Figure 5 The automatic water replenishment valve 240 includes a driving motor 241 and a first valve core 242 transmission-connected to the driving motor 241 , wherein the driving motor 241 may be a servo motor electrically connected to a controller, and the controller controls the state of the first valve core 242 by controlling the driving motor 241 .

[0053] The first water replenishment channel 211 includes a first installation channel 2111 and a first passage 2112. The driving motor 241 is sealed and installed at one end of the first installation channel 2111. The other end of the first installation channel 2111 is provided with a first port 2113, and the first port 2113 is communicated with the first connecting channel 221. The first passage 2112 is connected with the first installation channel 2111 and the second connecting channel 231. In this way, the first installation channel 2111 is communicated with the second connecting channel 231 through the first passage 2112.

[0054] When the water pressure in the heating water pipeline is lower than the target value, for example, 0.6 bar, the controller controls the driving motor 24 to operate, driving the first valve core 242 to move axially along the first installation channel 2111 and away from the first port 2113, so that the first valve core 242 moves away from the first port 2113 and opens the first installation channel 2111, so that the first connecting channel 221 is connected to the first installation channel 2111 through the first port 2113, so that the water in the water inlet channel 110 enters the first connecting channel 221 through the first interface 112, and the water in the first connecting channel 221 enters the heating water pipeline through the first port 2113, the first installation channel 2111, the first aisle 2112, the second connecting channel 231, the second interface 113 and the heating water inlet aisle 120, thereby realizing automatic water replenishment. At this time, the first connecting channel 221, the first port 2113, the first installation channel 2111, the first passage 2112, the second connecting channel 231, the second interface 113, and the heating water inlet passage 120 form an automatic water replenishment passage.

[0055] When the water pressure in the heating water pipeline reaches the target value, the controller controls the driving motor 241 to start again, driving the first valve core 242 to move axially along the first installation channel 2111 and toward the first port 2113, so that the first valve core 242 abuts against the first port 2113 to block the first installation channel 2111, thereby closing the automatic water replenishment passage.

[0056] This embodiment uses a driving motor 241 to drive the first valve core 242 to move, and the first valve core 242 is abutted against or separated from the first port 2113 to realize the opening and closing of the automatic water replenishment passage. The structure is simple and the cost is low. In addition, the driving motor 241 and the first valve core 242 are both installed in the first water replenishment channel 211, and there is no need to set up additional pipelines, which simplifies the structure of the heating water heater.

[0057] On the basis of the above embodiment, a sealing ring 2114 is provided on the side of the first port 2113 facing the driving motor 241, and the sealing ring 2114 connects the first port 2113 and the first installation channel 2111; and the sealing ring 2114, the first port 2113 and the first installation channel 2111 are coaxially arranged, which is not only conducive to simplifying the internal structure of the second valve body 200, but also the driving motor 241 drives the first valve core 242 to move in a straight line to open or close the automatic water replenishment passage, without setting a complicated automatic water replenishment valve structure, thereby simplifying the internal structure of the water inlet valve.

[0058] Specifically, the first valve core 242 includes a push rod 2421 and an abutment ring 2422 disposed outside the push rod 2421. Optionally, the abutment ring 2422 and the push rod 2421 are integrally disposed. The outer diameter of the abutment ring 2422 is greater than the outer diameter of the push rod 2421, and the abutment ring 2422 is disposed in the middle portion of the push rod 2421.

[0059] One end of the push rod 2421 is connected to the driving motor 241, and the other end of the push rod 2421 is inserted into the sealing ring 2114 and the first port 2113, so that the abutment ring 2422 can be guided to abut against the sealing ring 2114 to prevent the push rod 2421 from tilting and causing the abutment ring 2422 to deviate from the sealing ring 2114 and cause leakage in the automatic water replenishment passage.

[0060] When the heating water pipeline needs to be replenished, the controller controls the driving motor 241 to run, driving the top rod 2421 and the abutment ring 2422 to move axially along the first installation channel 2111 and away from the sealing ring 2114, so that the abutment ring 2422 moves away from the sealing ring 2114 and opens the first installation channel 2111. In this way, the water in the water inlet channel 110, the first interface 112, the first connecting channel 221, the first port 2113, the central channel of the sealing ring 2114, the first installation channel 2111, the first aisle 2112, the second connecting channel 231, the second interface 113 and the heating water inlet aisle 120 enter the heating water pipeline, realizing automatic water replenishment.

[0061] When the water pressure in the heating water pipeline reaches the target value, the controller controls the driving motor 241 to start again, and the top rod 2421 and the abutment ring 2422 move axially along the first installation channel 2111 and toward the sealing ring 2114, so that the abutment ring 2422 abuts against the sealing ring 2114 to block the first installation channel 2111, thereby closing the automatic water replenishment passage.

[0062] In this embodiment, the first valve core 242 drives the abutting ring 2422 to abut or separate from the blocking ring 2114 by setting the top rod 2421, so as to realize the opening or closing of the automatic water replenishment passage. In addition, the abutting ring 2422 is arranged in the middle of the top rod 2421, so that the end of the top rod 2421 away from the driving motor 241 can be inserted into the blocking ring 2114 and the first port 2113, guiding and ensuring that the abutting ring 2422 abuts against the blocking ring 2114, avoiding leakage of the first installation channel 2111 in the non-water replenishment state, and improving the reliability of the automatic water replenishment valve 240.

[0063] Combination Figure 5 and Figure 8 The second water replenishment channel 212 includes a second installation channel 2121 and a second passage 2122 that are connected, and the second installation channel 2121 is connected to the second connecting channel 231. The second installation channel 2121 is provided with an internal threaded portion 2125; the second passage 2122 is connected to the first connecting channel 221. In this way, the first connecting channel 221 can be connected to the second connecting channel 231 through the second passage 2122 and the second installation channel 2121.

[0064] The manual water supply valve 250 includes a second valve core 251, which includes a blocking portion 2511 and an external threaded portion 2512 threadedly connected to the internal threaded portion 2125. In addition, the second valve core 251 also includes a mounting portion, which is located on a side of the external threaded portion 2512 away from the blocking portion 2511. The manual water supply valve 250 also includes a valve stem 252, which is fixedly connected to the mounting portion of the second valve core 251, for example, the valve stem 252 is fixed to the mounting portion of the second valve core 251 by screws.

[0065] When water replenishment is needed, the user rotates the external threaded portion 2512 of the second valve core 251 relative to the internal threaded portion 2125 of the second installation channel 2121 through the valve stem 252, so that the second valve core 251 is screwed out of the second installation channel 2121, so that the blocking portion 2511 is away from and the second passage 2122 is opened. In this way, the first connecting channel 221 is connected with the second passage 2122, and the water in the water inlet channel 110 enters the first connecting channel 221 through the first interface 112, and the water in the first connecting channel 221 enters the heating water pipeline through the second passage 2122, the second installation channel 2121, the second connecting channel 231, the second interface 113 and the heating water inlet passage 120, so as to realize manual water replenishment. At this time, the first connecting channel 221, the second passage 2122, the second installation channel 2121, the second connecting channel 231, the second interface 113 and the heating water inlet passage 120 form a manual water replenishment passage.

[0066] After the water replenishment is completed, the user operates the valve stem 252 again to rotate the second valve core 251 into the second installation channel 2121, so that the blocking portion 2511 approaches and blocks the second passage 2122, thereby closing the manual water replenishment passage.

[0067] This embodiment provides two water replenishment methods by setting a manual water replenishment valve 250 to cooperate with the automatic water replenishment valve 240. The user can replenish water manually and / or automatically according to actual needs, thereby improving the reliability of water replenishment in the heating water pipeline.

[0068] Based on the above embodiment, the manual water supply valve 250 also includes a third sealing ring 253 located between the sealing portion 2511 and the external threaded portion 2512. The third sealing ring 253 is installed between the inner wall of the second installation channel 2121 and the second valve core 251 to achieve a sealed connection between the second valve core 251 and the second installation channel 2121 to avoid water leakage.

[0069] Furthermore, the second valve core 251 is also fixedly connected to the second installation channel 2121. Figure 7 and Figure 8 The side wall of the second installation channel 2121 is provided with a first plug hole 271 and a second plug hole 272 opposite to each other, and the first plug hole 271 and the second plug hole 272 are located on the side of the internal thread portion 2125 away from the third passage 2123 to be described below. In addition, the manual water supply valve 250 further includes a first limit buckle 270, which is inserted into the first plug hole 271, the second installation channel 2121 and the second plug hole 272 to resist the external thread portion 2512.

[0070] Optionally, the second installation channel 2121 is provided with two first plug holes 271 and two second plug holes 272, and the two first plug holes 271 are symmetrical about a diameter of the second installation channel 2121, and the two second plug holes 272 are also symmetrical about the diameter, and the diameter is parallel to the axial direction of the first plug holes 271 and the second plug holes 272. Accordingly, the first limit buckle 270 is a U-shaped structure, which includes a middle arm and two plug arms arranged at opposite ends of the middle arm with a relative interval, the two plug arms are respectively inserted into the first plug hole 271 and the second plug hole 272, and the plug arm located in the second installation channel 2121 abuts against the end of the external threaded portion 2512, thereby fixing the second valve core 251 in the second installation channel 2121.

[0071] Continue to refer to Figure 5 A portion of the second installation channel 2121 between the third sealing ring 253 and the second channel 2122 forms a third channel 2123 , and the third channel 2123 communicates with the first channel 2112 and the second connecting channel 231 .

[0072] The first installation channel 2111 is perpendicular to the central axis of the first connecting channel 221, and the first passage 2112 is disposed on the side wall of the first installation channel 2111, and the first passage 2112 is parallel to the first installation channel 2111. The second installation channel 2121 is perpendicular to the first installation channel 2111, that is, the first passage 2112 is perpendicular to the third passage 2123, and the first passage 2112 is connected to the third passage 2123.

[0073] The inner diameter of the second passage 2122 is smaller than the inner diameter of the second installation passage 2121, and the second passage 2122 is coaxial with the second installation passage 2121. The side wall of the first connection passage 221 is provided with an opening, which is connected with the second passage 2122. A fourth passage 2124 is provided on the side of the second passage 2122 away from the first connection passage 221, and the fourth passage 2124 is connected with the second connection passage 231 and the third passage 2123. The fourth passage 2124 and the second passage 2122 are respectively parallel to the second installation passage 2121, which is convenient for processing. The fourth passage 2124 is perpendicular to the second connection passage 231, which further improves the convenience of processing the internal passage of the second valve body 200.

[0074] In this way, the first passage 2112 of the automatic water replenishment passage is connected to the second connecting passage 231 through the third passage 2123 and the fourth passage 2124; and the second passage 2122 of the manual water replenishment passage is also connected to the second connecting passage 231 through the third passage 2123 and the fourth passage 2124. In this way, the automatic water replenishment passage and the manual water replenishment passage share the third passage 2123 and the fourth passage 2124, avoiding the complexity of the internal pipeline of the second valve body 200 caused by setting up separate passages, which is conducive to simplifying the structure of the second valve body 200. In addition, by opening a passage inside the second valve body 200 to realize water replenishment, there is no need to add pipelines outside the second valve body 200, which is conducive to simplifying the structure of the water inlet valve.

[0075] Reference Figure 1 , Figure 2 as well as Figure 4 The water inlet valve of this embodiment further includes a return water joint 261 and a second limiting buckle 262, and the return water joint 261 is sealed and connected to the zero cold water channel 213. Specifically, a fourth sealing ring 263 is provided between the return water joint 261 and the zero cold water channel 213, and the return water joint 261 is fixed to the zero cold water channel 213 through the second limiting buckle 262; wherein, the connection mode of the second limiting buckle 262 and the zero cold water channel 213 is the same as the connection mode of the first limiting buckle 270 and the second installation channel 2121, and will not be repeated here.

[0076] At this time, the one-way valve 260 is installed in the return water joint 261, and the return water joint 26 is also connected to the return pipe. In this embodiment, the return water joint 261 is sealed and connected to the zero cold water channel 213 to install the one-way valve 260 and connect the return pipe, thereby improving the convenience of connecting the one-way valve 260 and the return pipe.

[0077] Combination Figure 1 and Figure 6 In a specific implementation in which the first joint 220 is sealedly connected to the first interface 112 and the second joint 230 is sealedly connected to the second interface 113 , the first joint 220 and the second joint 230 are fixed to the first valve body 100 via a fixing sheet 300 .

[0078] In this embodiment, a mounting socket 170 is provided on the first valve body 100, and the mounting socket 170 is provided on the side wall of the water inlet channel 110. A mounting slot 171 is provided on the mounting socket 170; the first interface 112 and the second interface 113 are both provided on the mounting socket 170. Moreover, the first interface 112 and the second interface 113 are provided side by side in a direction perpendicular to the axial direction of the water inlet channel 110.

[0079] Reference Figure 4 The first joint 220 is provided with a first slot 222, and a first sealing ring 223 is provided between the first slot 222 and the end surface of the first joint 220. The first sealing ring 223 is provided to achieve a sealed connection between the first joint 220 and the first interface 112 to prevent water leakage. The second joint 230 is provided with a second slot 232, and a second sealing ring 233 is provided between the second slot 232 and the end surface of the second joint 230. The second sealing ring 233 is provided to achieve a sealed connection between the second joint 230 and the second interface 113 to prevent water leakage.

[0080] Reference Figure 1 The fixing piece 300 includes a first inserting piece portion 310 and a second inserting piece portion 320 . The first inserting piece portion 310 is inserted into the installation slot 171 and the first slot 222 , respectively, and the second inserting piece portion 320 is inserted into the installation slot 171 and the second slot 232 , respectively.

[0081] In this embodiment, two first inserting pieces 310 are provided, which are respectively inserted into the opposite sides of the first slot 222, so as to improve the reliability of the installation of the first connector 220, and an open slot for accommodating the first connector 220 is formed between the two first inserting pieces 310. Two second inserting pieces 320 are provided, which are respectively inserted into the opposite sides of the second slot 232, so as to improve the reliability of the installation of the second connector 230; an open slot for accommodating the second connector 230 is formed between the two second inserting pieces 320. In addition, the adjacent first inserting pieces 310 and second inserting pieces 320 are integrated, which simplifies the structure of the fixing piece 300 and improves the convenience of installation.

[0082] In this embodiment, a first sealing ring 223 is provided on the first joint 220, so that the first joint 220 is sealed and connected with the first interface 112; a second sealing ring 233 is provided on the second joint 230, so that the second joint 230 is sealed and connected with the second interface 113. In addition, a fixing sheet 300 is provided and inserted into the installation slot 171 and the slot of the joint, so that the first joint 220 and the second joint 230 are fixed on the installation socket 170, which has a simple structure and is easy to disassemble.

[0083] Continue to refer to Figures 1 to 3 The embodiment of the present invention provides a water inlet valve, wherein a tap water interface 140 and a domestic water inlet 150 are further provided on the first valve body 100. The tap water interface 140 is used to communicate with a tap water pipeline to supply water to the domestic water pipeline and the heating water pipeline. A water inlet channel 110 is formed between the domestic water inlet 150 and the tap water interface 140, and a water inlet valve core assembly 160 is provided in the water inlet channel 110.

[0084] The water inlet valve core assembly 160 includes a valve core housing 161, a rotor 162, a gland 163 and a filter 164, wherein the valve core housing 161 is fixed to the side wall of the water inlet channel 110 through a fourth limit buckle 167, and a fifth sealing ring 165 is provided between the valve core housing 161 and the water inlet channel 110, so that the valve core housing 161 and the water inlet channel 110 are sealed and fixedly connected. In addition, a through hole 1611 is provided on the valve core housing 161, so that water from the tap water interface 140 can enter the interior of the valve core housing 161 through the through hole 1611.

[0085] The rotor 162 is installed in the valve core housing 161. A flow sensor is provided at one end of the rotor 162, and an impeller is provided at the other end of the rotor 162. The impeller rotates under the action of the water flow, thereby driving the magnetic rotor of the flow sensor to rotate. The sensing element of the flow sensor senses the change of the magnetic field of the magnetic rotor and transmits the signal to the controller to control the burner to open or close.

[0086] A gland 163 is provided at one end of the rotor 162 where the impeller is provided. The gland 163 is provided with a through hole, and a sixth sealing ring 166 is provided between the gland 163 and the valve core housing 161. A filter 164 is provided at the end of the gland 163. The filter 164 is used to filter impurities in the water. The filter 164 can be a filter net, a filter cloth, or a filter element. In this embodiment, the filter 164 is provided to filter impurities in the water entering the heat exchanger, which is conducive to improving the service life of the heating water heater.

[0087] Combination Figure 3The water in the tap water interface 140 enters the valve core shell 161 through the port 1611 of the valve core shell 161, enters the filter 164 after passing through the rotor 162 and the pressure cover 163, and then enters the domestic water heat exchange pipe in the heat exchanger through the domestic water inlet 150 after being filtered by the filter 164, thereby heating the domestic water.

[0088] Furthermore, the first interface 112 is located between the water inlet valve core assembly 160 and the domestic water inlet 150, so that the water used to replenish the heating water pipeline through the first interface 112 can be filtered through the filter 164 to improve the cleanliness of the water in the heat exchanger.

[0089] In this embodiment, a heating water return channel 130 is further provided on the first valve body 100, and the heating water return channel 130 is connected to the heating water inlet passage 120, so that the circulation of heating water is realized.

[0090] In summary, the heating water heater of the present invention includes a controller, a heat exchanger and a water inlet valve. The water in the tap water pipe enters the heat exchanger through the water inlet valve, and the controller is electrically connected to the automatic water replenishment valve 240 of the water inlet valve to control the automatic water replenishment valve 240 to supply water to the heating water pipeline. Specifically, the water inlet valve includes a first valve body 100 and a second valve body 200, wherein the first valve body 100 is provided with an inlet pipe 110, a heating water inlet passage 120 and a heating return water channel 130 to realize domestic water inlet, heating water inlet and heating return water; and the first valve body 100 is provided with a first interface 112 and a second interface 113, which are respectively sealed and connected to the first joint 220 and the second joint 230 on the second valve body 200, so that the first connecting channel 221 in the first joint 220 is connected to the first interface 112, and the second joint 230 is connected to ... 0 is connected to the second interface 113; the first water replenishment channel 211, the second water replenishment channel 212 and the zero cold water channel 213 are arranged in the second valve body 200, the first water replenishment channel 211 is equipped with an automatic water replenishment valve 240, and automatic water replenishment is realized under the control of the controller; the second water replenishment channel 212 is equipped with a manual water replenishment valve 250, and manual water replenishment is realized; a one-way valve 260 is installed in the zero cold water channel 213, so that the cold water in the domestic water outlet pipeline flows back to the water inlet valve, avoiding the waste of water resources, so that the domestic water outlet is hot water. The water inlet valve of the embodiment of the present invention includes two valve bodies in a sealed connection, integrating the automatic water replenishment function, without the need to set up additional pipelines, and simplifying the pipeline layout of the water inlet valve.

[0091] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A water inlet valve, characterized in that: include: a first valve body and a second valve body; The first valve body is provided with a water inlet channel, a heating inlet, a first interface and a second interface, the first interface is provided on the side wall of the water inlet channel, and a heating water inlet passage is formed between the second interface and the heating inlet; The second valve body comprises a valve body, a first joint sealedly connected to the first interface, and a second joint sealedly connected to the second interface, the first joint is provided with a first connecting channel communicating with the first interface, and the second joint is provided with a second connecting channel communicating with the second interface; A first water replenishment channel, a second water replenishment channel and a zero cold water channel are provided in the valve body, the first water replenishment channel is connected to the first connecting channel and the second connecting channel, and an automatic water replenishment valve is provided in the first water replenishment channel, and the automatic water replenishment valve can open or block the first water replenishment channel; the second water replenishment channel is connected to the first connecting channel and the second connecting channel, and a manual water replenishment valve is provided in the second water replenishment channel, and the manual water replenishment valve can open or block the second water replenishment channel; the zero cold water channel is connected to the first connecting channel, and a one-way valve is provided in the zero cold water channel.

2. The water inlet valve according to claim 1, characterized in that: The automatic water replenishment valve comprises a driving motor and a first valve core drivingly connected to the driving motor; The first water replenishment channel includes a first installation channel and a first passage, the driving motor is sealed and installed at one end of the first installation channel, and a first port communicating with the first connecting channel is provided at the other end of the first installation channel; The first passage is connected to the first installation passage and the second connection passage; The driving motor drives the first valve core to move axially along the first installation passage so that the first valve core abuts against the first port to block the first installation passage, or drives the first valve core to move away from the first port to open the first installation passage.

3. The water inlet valve according to claim 2, characterized in that: A sealing ring is provided on a side of the first port facing the drive motor; The first valve core includes a push rod and an abutment ring arranged outside the push rod, one end of the push rod is transmission-connected to the drive motor, and the other end of the push rod is inserted into the blocking ring and the first port; The driving motor drives the push rod to move axially along the first installation channel so that the abutment ring abuts against the blocking ring to block the first installation channel, or so that the abutment ring moves away from the blocking ring to open the first installation channel.

4. The water inlet valve according to claim 2, characterized in that: The second water replenishment channel includes a second installation channel and a second passage that are connected; the second installation channel is connected to the second connecting channel, and the second installation channel is provided with an internal threaded portion; the second passage is connected to the first connecting channel; The manual water supply valve includes a second valve core, which includes a sealing portion and an external threaded portion threadedly connected to the internal threaded portion, and the second valve core can move axially relative to the second installation channel so that the sealing portion approaches and blocks the second passage, or so that the sealing portion moves away from and opens the second passage.

5. The water inlet valve according to claim 4, characterized in that: The manual water replenishment valve also includes a third sealing ring located between the blocking portion and the external threaded portion; a portion of the second installation channel between the third sealing ring and the second channel forms a third channel, and the third channel connects the first channel and the second connecting channel.

6. The water inlet valve according to claim 5, characterized in that: A first plug hole and a second plug hole opposite to each other are arranged on the side wall of the second installation channel, and the first plug hole and the second plug hole are located on a side of the internal thread portion away from the third passage; The manual water supply valve also includes a first limit buckle, which is inserted into the first insertion hole, the second installation channel and the second insertion hole to resist the external threaded portion.

7. The water inlet valve according to any one of claims 1 to 6, characterized in that: The water inlet valve further includes a return water joint and a second limit buckle, a fourth sealing ring is provided between the return water joint and the zero cold water channel, and the return water joint is fixed to the zero cold water channel through the second limit buckle; The one-way valve is installed in the water return joint.

8. The water inlet valve according to any one of claims 1 to 6, characterized in that: The first joint is provided with a first slot, and a first sealing ring is provided between the first slot and the end face of the first joint; the second joint is provided with a second slot, and a second sealing ring is provided between the second slot and the end face of the second joint; The first valve body is provided with a mounting socket, and the mounting socket is provided with a mounting slot; the first interface and the second interface are both provided on the mounting socket; The water inlet valve also includes a fixing plate, and the fixing plate includes a first inserting plate portion and a second inserting plate portion, the first inserting plate portion is respectively inserted into the installation slot and the first slot, and the second inserting plate portion is respectively inserted into the installation slot and the second slot.

9. The water inlet valve according to any one of claims 1 to 6, characterized in that: The first valve body is also provided with a tap water interface, a domestic water inlet and a heating return water channel, the water inlet channel is formed between the tap water interface and the domestic water inlet; a water inlet valve core assembly is arranged in the water inlet channel; the first interface is located between the water inlet valve core assembly and the domestic water inlet; The heating water return channel is communicated with the heating water inlet passage.

10. A heating water heater, characterized in that: include: A controller, a heat exchanger, and a water inlet valve according to any one of claims 1 to 9, wherein the heat exchanger comprises a domestic water port and a heating water port, the domestic water port is communicated with the water inlet channel of the water inlet valve, and the heating water port is communicated with the heating inlet of the water inlet valve; The controller is electrically connected to the automatic water replenishment valve, and the controller is configured to control the automatic water replenishment valve to connect or disconnect the first connecting channel and the second connecting channel.

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