Gas water heater and water inlet valve for same

Abstract

The utility model provides a gas water heater and its water inlet valve, the water inlet valve comprises a shell, a first valve body and a first valve core assembly, the shell is provided with a water inlet pipe and a first water outlet pipe, the first valve body is located in the shell, and the first valve core assembly is located in the shell. The first valve body is provided with a first passage and a second passage which are arranged between the water inlet pipe and the first water outlet pipe, the second passage is a normally-opened passage, and the first valve element assembly is arranged in the first valve body and used for controlling on-off of the first passage. After secondary boiling water and the bypass valve are closed, the openable and closable passage is disconnected, cold water is conveyed to the hot water end only by keeping the normally open passage, so that the cold water quantity can be quickly matched with the heating capacity of the combustor, and the openable and closable passage is connected after the water outlet temperature is stable, so that the secondary boiling water is ensured to be constant in temperature; the problem that half-raw water appears at the water outlet end is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot water equipment technical field especially a gas water heater and the water inlet valve for it. BACKGROUND

[0002] At present, gas water heater is the hot water equipment that people commonly used in daily life. Gas water heater is widely used because of its hot water waiting, power and other characteristics. Due to the limitation of heating mode of gas water heater, there are still some shortcomings: such as starting to need to discharge the cold water in the pipeline, in order to safety need to carry out the front exhaust inspection, and heating start time is long, and the heat exchanger needs to be heat balanced before the hot water suitable for bathing can be discharged, which affects the bathing comfort; the water temperature will be hot and cold in the bathing process because of water fluctuation; the situation of hot first and cold later will also appear when water is closed again.

[0003] In the related art, the water heater can have a water inlet end, a hot water end and a water outlet end. The water inlet end can be provided with a water inlet valve, which can adjust the flow of cold water entering the water heater from the water inlet end of the water heater. The cold water can flow out from the hot water end of the water heater after being heated by the water heater. The hot water end can be provided with a bypass valve, which can adjust the flow of cold water mixed with the hot water flowing out of the hot water end. The mixed water can flow out through the water outlet end of the water heater for the user to use.

[0004] However, when the water is opened again and the bypass valve is closed in the related art, the flow of cold water entering the hot water end through the water inlet valve suddenly increases, and the heating capacity of the burner cannot quickly match it, resulting in the problem of undercooked water at the water outlet end.

[0005] Therefore, the utility model is proposed. UTILITY MODEL CONTENT

[0006] The technical problem to be solved by the utility model is to overcome at least part of the deficiencies of the prior art, provide a water inlet valve for a gas water heater, by configuring a normally open path from the water inlet pipe to the first water outlet pipe and an openable and closable path from the water inlet pipe to the first water outlet pipe, when the water is opened again and the bypass valve is closed, the openable and closable path can be disconnected, only the normally open path remains to deliver cold water to the hot water end, so that the amount of cold water can quickly match the heating capacity of the burner, and when the water outlet temperature is stable, the openable and closable path is turned on again, thereby ensuring constant temperature of the water opened again, and solving the problem of undercooked water at the water outlet end.

[0007] To solve the above technical problems, the first aspect of the utility model provides a water inlet valve for a gas water heater, comprising:

[0008] A housing having a water inlet pipe and a first water outlet pipe;

[0009] a first valve body located in the housing, the first valve body having a first passage and a second passage between the water inlet pipe and the first water outlet pipe, wherein the second passage is a normally open passage; and

[0010] a first valve core assembly connected with the first valve body for controlling opening and closing of the first passage.

[0011] In some embodiments, the first valve body comprises a first valve seat and a first partition plate connected with the housing;

[0012] wherein the first partition plate and the first valve seat form a first water passing cavity, and a hollow structure of the first sleeve forms a first water outlet cavity in communication with the first water outlet pipe;

[0013] the first partition plate is provided with a first water injection port and a first water outlet port, the first water injection port is in communication with the water inlet pipe and the first water passing cavity, the first valve core assembly is connected with the first valve seat for opening and closing the first water outlet port to control opening and closing between the first water outlet port and the first water outlet cavity, thereby controlling opening and closing of the first passage.

[0014] In some embodiments, the first valve body further comprises a first sleeve connected with the housing;

[0015] the first sleeve is provided with a water distribution port, the water distribution port is in communication with the water inlet pipe and the first water passing cavity to form the second passage.

[0016] In some embodiments, the first valve seat is provided with a first valve hole;

[0017] wherein the first valve core assembly comprises:

[0018] a first valve rod, one end of the first valve rod being arranged in the first valve hole; and

[0019] a first driving structure connected with the first valve rod for driving the first valve rod to reciprocate in the first valve hole to open and close the first water outlet port.

[0020] In some embodiments, the first driving structure comprises:

[0021] a first sleeve, the other end of the first valve rod being arranged in the first sleeve;

[0022] a first return spring sleeved on the first valve rod, one end of the first return spring being fixedly connected with the first sleeve, and the other end being abutted against a limiting portion provided on the first valve rod; and

[0023] A first electromagnetic coil is sleeved outside the first sleeve and is used to generate a magnetic field to attract the first valve rod to overcome the elastic force of the first return spring, so that the first valve rod is moved and the first water outlet is opened.

[0024] In some embodiments, a second water outlet pipe and a valve cavity in communication with the water inlet pipe are further arranged on the housing.

[0025] A second valve body is arranged in the valve cavity, and a second valve core assembly for controlling the on-off between the water inlet pipe and the second water outlet pipe is connected to the second valve body.

[0026] In some embodiments, the second water outlet pipe is located upstream of the first water outlet pipe in the direction of water flow in the water inlet pipe.

[0027] In some embodiments, the second water outlet pipe and the valve cavity are arranged on the housing at a position not interfering with the water flow in the water inlet pipe.

[0028] In some embodiments, a water temperature detection port and / or a flow detection port are formed on the housing.

[0029] A temperature detection unit is connected to the water temperature detection port, and / or a flow detection unit is connected to the flow detection port.

[0030] In some embodiments, the second valve body comprises a second valve seat connected to the valve cavity, a second partition plate, and a second sleeve.

[0031] A second water passing cavity is formed between the second partition plate and the second valve seat, and a hollow structure of the second sleeve forms a second water outlet cavity in communication with the second water outlet pipe.

[0032] A second water inlet port and a second water outlet port are formed on the second partition plate, the second water inlet port is in communication with the water inlet pipe and the second water passing cavity, the second valve core assembly is connected to the second valve seat, and is used to open and close the second water outlet port to control the on-off between the second water outlet port and the second water outlet cavity.

[0033] In some embodiments, the water inlet pipe, the first water outlet pipe, the second water outlet pipe, and the valve cavity are integrally formed.

[0034] The second aspect of the utility model further provides a gas water heater, which comprises the water inlet valve for the gas water heater.

[0035] Compared with the prior art, the utility model has the following beneficial effects.

[0036] (1) The water inlet valve for the gas water heater provided by the utility model, through configuring a normally open path between the water inlet pipe and the first water outlet pipe and an openable and closable path between the water inlet pipe and the first water outlet pipe, when the second boiled water and the bypass valve are closed, the openable and closable path can be disconnected, only the normally open path is kept to transport cold water to the hot water end, so that the cold water amount can be quickly matched with the heating capacity of the burner, and when the water outlet temperature is stable, the openable and closable path is turned on again, thereby guaranteeing the constant temperature of the second boiled water and solving the problem of the undercooked water at the water outlet end.

[0037] (2) The water inlet valve for the gas water heater provided by the utility model, by integrating the bypass function, the temperature detection function and the flow detection function on the water inlet valve, the component integration degree is improved, and the whole machine assembly efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings are part of the utility model and serve to provide a further understanding of the utility model, the illustrative embodiments of the utility model and the description thereof serve to explain the utility model, but do not constitute an improper limitation on the utility model. Apparently, the drawings in the following description are only some embodiments, and other drawings can be obtained according to the drawings without the creative labor of those skilled in the art. In the drawings:

[0039] Figure 1 is a partial structure schematic view of the gas water heater according to the first exemplary embodiment of the utility model;

[0040] Figure 2 is a partial structure schematic view of the gas water heater according to the second exemplary embodiment of the utility model;

[0041] Figure 3 is a structure schematic view of the water inlet valve for the gas water heater according to the utility model;

[0042] Figure 4 is Figure 3 a top view of the structure in the figure;

[0043] Figure 5 is Figure 4 an A-A cross-sectional view of the structure in the figure;

[0044] Figure 6 is Figure 5 a local enlarged view of I in the structure in the figure;

[0045] Figure 7 is Figure 4 a B-B cross-sectional view of the structure in the figure;

[0046] Figure 8 is Figure 4 a C-C cross-sectional view of the structure in the figure;

[0047] Figure 9 is Figure 8 is a partial enlarged view of the structure in II in the figure.

[0048] In the figure: 100, gas water heater;

[0049] 110, casing;

[0050] 120, water inlet end; 121, water inlet main pipe; 122, water inlet branch pipe;

[0051] 130, hot water end;

[0052] 140, water outlet end; 141, water outlet branch pipe; 142, water outlet main pipe;

[0053] 150, bypass branch pipe;

[0054] 160, water inlet valve; 161, housing; 1611, water inlet pipe; 1612, first water outlet pipe; 1613, second water outlet pipe; 1614, valve cavity; 1615, water temperature detection port; 1616, flow detection port; 162, first valve body; 1621, first valve seat; 1622, first partition plate; 1623, first sleeve; 1624, first water passing cavity; 1625, first water outlet cavity; 1626, first water filling port; 1627, first water outlet port; 1628, water distribution port; 163, first valve core assembly; 1631, first valve rod; 1632, first driving structure; 16321, first sleeve; 16322, first return spring; 16323, first electromagnetic coil; 16324, first power connection terminal; 164, second valve body; 1641, second valve seat; 1642, second partition plate; 1643, second sleeve; 1644, second water passing cavity; 1645, second water outlet cavity; 1646, second water filling port; 1647, second water outlet port; 165, second valve core assembly; 1651, second valve rod; 1652, second driving structure; 16521, second sleeve; 16522, second return spring; 16523, second electromagnetic coil; 16524, second power connection terminal;

[0055] 170, bypass valve.

[0056] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in combination with the drawings of the embodiments of the utility model, and the following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0058] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0059] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integrally connected; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0060] As described in the background, when the secondary boiled water and the bypass valve are closed, the cold water flow entering the hot water end through the water inlet valve suddenly increases, and the heating capacity of the burner cannot quickly match it, which causes the problem of undercooked water at the water outlet end. Based on this, the utility model provides a water inlet valve for a gas water heater, which comprises a shell, a first valve body and a first valve core assembly, wherein the shell has a water inlet pipe and a first water outlet pipe, the first valve body is located in the shell, the first valve body has a first passage and a second passage between the water inlet pipe and the first water outlet pipe, wherein the second passage is a normally open passage, and the first valve core assembly is arranged in the first valve body and is used for controlling the opening and closing of the first passage. In the above scheme, by configuring a normally open passage from the water inlet pipe to the first water outlet pipe and an openable and closable passage from the water inlet pipe to the first water outlet pipe for the water inlet valve, when the secondary boiled water and the bypass valve are closed, the openable and closable passage can be disconnected, and only the normally open passage is maintained to deliver cold water to the hot water end, so that the cold water amount can quickly match the heating capacity of the burner, and when the water outlet temperature is stable, the openable and closable passage is turned on again, thereby ensuring the constant temperature of the secondary boiled water and solving the problem of undercooked water at the water outlet end.

[0061] The preferred technical scheme of the gas water heater and the water inlet valve thereof provided by the utility model will be described below in combination with the drawings.

[0062] Figure 1is a partial structure schematic view of the gas water heater 100 according to the first exemplary embodiment of the present utility model; Figure 2 is a partial structure schematic view of the gas water heater 100 according to the second exemplary embodiment of the present utility model; Figure 3 is a structure schematic view of the water inlet valve 160 for the gas water heater 100 according to the present utility model; Figure 4 is Figure 3 a top view of the structure in the middle; Figure 5 is Figure 4 an A-A cross-sectional view of the structure in the middle; Figure 6 is Figure 5 a local enlarged view at I of the structure in the middle; Figure 7 is Figure 4 a B-B cross-sectional view of the structure in the middle; Figure 8 is Figure 4 a C-C cross-sectional view of the structure in the middle; Figure 9 is Figure 8 a local enlarged view at II of the structure in the middle.

[0063] As shown in Figure 1 , the gas water heater 100 comprises a casing 110 and a water inlet end 120, a hot water end 130 and a water outlet end 140 arranged in the casing 110. The water inlet end 120 can have a water inlet main pipe 121 and a water inlet branch pipe 122, and the water outlet end 140 can have a water outlet branch pipe 141 and a water outlet main pipe 142, wherein the water outlet branch pipe 141 is connected with the hot water end 130. A bypass branch pipe 150 can be communicated between the water inlet branch pipe 122 and the water outlet branch pipe 141. The water inlet branch pipe 122 is provided with a water inlet valve 160, and the bypass branch pipe 150 is provided with a bypass valve 170. It can be understood that the above-mentioned hot water end 130 is a gas heat exchanger.

[0064] Referring to Figures 3 to 9 , the water inlet valve 160 comprises a housing 161, a first valve body 162 and a first valve core assembly 163, wherein the housing 161 has a water inlet pipe 1611 and a first water outlet pipe 1612. The water inlet pipe 1611 is connected with the water inlet main pipe 121, and the first water outlet pipe 1612 is connected with the water inlet branch pipe 122. The first valve body 162 is located in the housing 161, and the first valve body 162 has a first passage and a second passage from the water inlet pipe 1611 to the first water outlet pipe 1612, wherein the second passage is a normally open passage, and the first valve core assembly 163 is connected with the first valve body 162 for controlling the opening and closing of the first passage.

[0065] Referring to Figure 1As shown, when the user uses water, cold water can enter the gas water heater 100 through the water inlet main pipe 121. The output end of the water inlet main pipe 121 can be in communication with the water inlet branch pipe 122, enter the hot water end 130 of the gas water heater 100 through the first passage and the second passage of the water inlet valve 160, and then flow out to the user through the hot water end 130, the water outlet branch pipe 141 and the water outlet main pipe 142 in sequence after being heated.

[0066] When the user stops using water for a short time and uses water again, cold water can be delivered through the water inlet main pipe 121. The output end of the water inlet main pipe 121 can be in communication with the water inlet branch pipe 122 and the bypass branch pipe 150 respectively, so that a part of the cold water enters the hot water end 130 of the gas water heater 100 through the first passage and the second passage of the water inlet valve 160, and a part of the cold water mixes with the hot water flowing out of the water outlet branch pipe 141 after passing through the bypass valve 170 of the bypass branch pipe 150. The mixed water can flow out to the user through the water outlet main pipe 142 of the water outlet end 140, solving the problem of temperature rise of the second opening water.

[0067] When the difference between the outlet water temperature and the target water temperature is less than the preset threshold value or the opening time of the bypass valve 170 reaches the preset time, the bypass valve 170 is closed. At this time, the openable and closable passage of the water inlet valve 160 can be disconnected, only the always open passage is maintained to deliver cold water to the hot water end 130, the cold water flow entering the hot water end 130 is reduced, so that the cold water amount can quickly match the heating capacity of the burner of the hot water end 130, and when the outlet water temperature is stable, the openable and closable passage is turned on again, thereby ensuring the constant temperature of the second opening water and solving the problem of undercooked water at the water outlet end 140, so as to improve the user's water experience.

[0068] It should be pointed out that the bypass valve 170 described above can adopt a structure commonly used in the art, which is not limited by the utility model.

[0069] In some other embodiments, as shown in Figure 2 The bypass valve 170 described above is not separately arranged on the bypass branch pipe 150, and the bypass function of controlling the on-off of the bypass branch pipe 150 is integrated on the water inlet valve 160 provided by the utility model. Specifically, referring to Figure 3 and Figure 8 As shown, the housing 161 is further provided with a second water outlet pipe 1613 and a valve cavity 1614 in communication with the water inlet pipe 1611; wherein the second water outlet pipe 1613 is connected with the bypass branch pipe 150, and the valve cavity 1614 is provided with a second valve body 164 connected with a second valve core assembly 165 for controlling the on-off between the water inlet pipe 1611 and the second water outlet pipe 1613.

[0070] Further, referring to Figure 4As shown, the second water outlet pipe 1613 is located upstream of the first water outlet pipe 1612 in the water flow direction in the water inlet pipe 1611, so that when the user uses water for the second time, the cold water in the water inlet main pipe 121 can be preferentially introduced into the bypass branch pipe 150 to neutralize the hot water with higher temperature in the water outlet branch pipe 141, so as to make the water temperature close to the target water temperature.

[0071] In some embodiments, referring back to Figure 4 As shown, the second water outlet pipe 1613 and the valve cavity 1614 are arranged on the shell 161 in a position not interfering with the water flow in the water inlet pipe 1611, so that the on-off control of the bypass branch pipe 150 and the water inlet branch pipe 122 does not interfere with each other, and the water flow can be more flexibly controlled, and the water use efficiency is improved.

[0072] As an example, the axis of the first water outlet pipe 1612 and the first valve body 162 is in the same plane as the axis of the water inlet pipe 1611, and the axis of the second water outlet pipe 1613 and the valve cavity 1614 is not in the same plane as the axis of the water inlet pipe 1611. Preferably, in order to match the layout of the components inside the casing 110 of the gas water heater 100, the axis of the first water outlet pipe 1612 and the first valve body 162 intersects the axis of the water inlet pipe 1611, and the water outlet direction of the second water outlet pipe 1613 is the same as the water outlet direction of the first water outlet pipe 1612.

[0073] In some embodiments, the temperature detection function and / or the flow detection function can also be integrated on the water inlet valve 160, so as to improve the component integration degree and the whole machine assembly efficiency, and reduce the whole machine cost.

[0074] In particular, referring back to Figure 3 The shell 161 is provided with a water temperature detection opening 1615 and / or a flow detection opening 1616; wherein the water temperature detection opening 1615 is connected with a temperature detection unit for detecting the water flow temperature, and / or the flow detection opening 1616 is connected with a flow detection unit for detecting the water flow. The temperature detection unit and the flow detection unit can adopt the commonly used components in the art, which are not limited herein.

[0075] In some embodiments, the water inlet pipe 1611, the first water outlet pipe 1612, the second water outlet pipe 1613 and the valve cavity 1614 are integrally formed, so as to reduce the assembly process, improve the assembly efficiency, and reduce the whole machine cost.

[0076] The structure of the first valve body 162 and the first valve core assembly 163 will be described below with reference to Figures 5 to 7

[0077] As Figures 5 to 7 ​As shown, the first valve body 162 comprises a first valve seat 1621 connected with the shell 161, a first partition plate 1622 and a first sleeve 1623; wherein the first partition plate 1622 and the first valve seat 1621 form a first water passing cavity 1624, and the hollow structure of the first sleeve 1623 forms a first water outlet cavity 1625 communicated with the first water outlet pipe 1612.

[0078] The first partition plate 1622 is provided with a first water inlet 1626 and a first water outlet 1627, the first water inlet 1626 is communicated with the water inlet pipe 1611 and the first water passing cavity 1624, the first water outlet 1627 is communicated with the first water passing cavity 1624 and the first water outlet cavity 1625, forming a first path from the first water inlet 1626, through the first water passing cavity 1624 and the first water outlet 1627, and ending in the first water outlet cavity 1625. The first valve core assembly 163 is connected with the first valve seat 1621, for opening and closing the first water outlet 1627 to control the on-off between the first water outlet 1627 and the first water outlet cavity 1625, thereby controlling the on-off of the first path.

[0079] The first sleeve 1623 is provided with a water distribution port 1628, which is communicated with the water inlet pipe 1611 and the first water outlet cavity 1625 to form the second path.

[0080] Preferably, the first valve seat 1621, the first sleeve 1623 and the first water outlet pipe 1612 are integrally formed with the shell 161. The first partition plate 1622 is fixedly connected with the shell 161.

[0081] In detail, when the hot water end 130 needs to enter large-flow cold water, the first valve core assembly 163 opens the first water outlet 1627, and the cold water entering the water inlet valve 160 through the water inlet pipe 1611 enters the first water outlet cavity 1625 through the first water inlet 1626, the first water passing cavity 1624 and the first water outlet 1627 in sequence, and the other part directly enters the first water outlet cavity 1625 through the water distribution port 1628, and then enters the hot water end 130 through the water inlet branch pipe 122 after converging together through the first water outlet pipe 1612.

[0082] When the hot water end 130 needs to enter small-flow cold water, the first valve core assembly 163 closes the first water outlet 1627, and the cold water entering the water inlet valve 160 through the water inlet pipe 1611 cannot enter the first water passing cavity 1624 through the first water inlet 1626, but can only enter the first water outlet cavity 1625 through the water distribution port 1628, and then enter the hot water end 130 through the first water outlet pipe 1612 and the water inlet branch pipe 122.

[0083] As an example, the water passing area of the water distribution port 1628 is larger than that of the first water inlet port 1626, which avoids insufficient water inflow leading to insufficient hot water, so that the user needs to wait for a long time to get enough hot water, and when the water inflow is insufficient, the hot water temperature is also prone to fluctuate and be unstable, affecting the user's experience. In addition, if the water inflow is too small, the internal water pump of the gas water heater 100 will be in a high-speed running state for a long time, which is easy to damage the equipment and shorten the service life of the gas water heater 100.

[0084] Optionally, referring to Figure 7 As shown in the figure, the water distribution port 1628 is formed on the side of the first sleeve 1623 facing the water inlet pipe 1611, and the shape of the water distribution port 1628 can be circular, plum blossom-shaped, etc.

[0085] Further, referring again to Figure 6 , the first valve seat 1621 is provided with a first valve hole; wherein the first valve core assembly 163 includes a first valve rod 1631 and a first driving structure 1632 connected with the first valve rod 1631, one end of the first valve rod 1631 is provided in the first valve hole; the first driving structure 1632 is used to drive the first valve rod 1631 to reciprocate in the first valve hole to open and close the first water outlet 1627.

[0086] Preferably, the first driving structure 1632 drives the first valve rod 1631 to reciprocate in the first valve hole in an electromagnetic driving mode.

[0087] In detail, the first driving structure 1632 includes a first sleeve 16321, a first reset spring 16322 and a first electromagnetic coil 16323, the other end of the first valve rod 1631 is provided in the first sleeve 16321; the first reset spring 16322 is sleeved on the first valve rod 1631, and one end of the first reset spring 16322 is fixedly connected with the first sleeve 16321, and the other end is abutted with a limiting portion provided on the first valve rod 1631; the first electromagnetic coil 16323 is sleeved outside the first sleeve 16321, and is used to generate a magnetic field to attract the first valve rod 1631 to overcome the elastic force of the first reset spring 16322, so that the first valve rod 1631 moves and opens the first water outlet 1627. Referring to Figure 3 As shown in the figure, the first electromagnetic coil 16323 is connected with the control unit of the gas water heater through a first power terminal 16324.

[0088] It should be noted that the first valve rod 1631 is in abutment with the first water outlet 1627 under the elastic force of the first return spring 16322, so that the first water outlet 1627 is kept in a normally closed state. When the first electromagnetic coil 16323 is energized to generate an electromagnetic field, the first valve rod 1631 overcomes the elastic force of the first return spring 16322 and moves away from the first water outlet 1627 to open the first water outlet 1627 under the action of the electromagnetic field.

[0089] The structure of the second valve body 164 and the second valve core assembly 165 will be described below with reference to Figure 8 and Figure 9

[0090] As shown in Figure 8 and Figure 9 The second valve body 164 includes a second valve seat 1641 connected to the valve cavity 1614, a second partition plate 1642, and a second sleeve 1643. The second partition plate 1642 and the second valve seat 1641 form a second water passage 1644, and the hollow structure of the second sleeve 1643 forms a second water outlet cavity 1645 in communication with the second water outlet pipe 1613. The second partition plate 1642 is provided with a second water inlet 1646 and a second water outlet 1647. The second water inlet 1646 communicates the water inlet pipe 1611 and the second water passage 1644. The second valve core assembly 165 is connected to the second valve seat 1641 and is used to open and close the second water outlet 1647 to control the communication between the second water outlet 1647 and the second water outlet cavity 1645.

[0091] Preferably, the second valve seat 1641, the second sleeve 1643, and the second water outlet pipe 1613 are integrally formed with the shell 161. The second partition plate 1642 is fixedly connected to the shell 161.

[0092] In detail, when cold water needs to be supplied to the bypass branch pipe 150, the second valve core assembly 165 opens the second water outlet 1647, and part of the cold water entering the water inlet valve 160 through the water inlet pipe 1611 passes through the second water inlet 1646, the second water passage 1644, and the second water outlet 1647 in sequence, enters the second water outlet cavity 1645, and then passes through the second water outlet pipe 1613. After the hot water flowing out of the bypass branch pipe 150 and the water outlet branch pipe 141 is combined, it flows out to the user through the water outlet main pipe 142.

[0093] ​Further, the second valve seat 1641 is provided with a second valve hole; wherein the second valve core assembly 165 comprises a second valve rod 1651 and a second driving structure 1652 connected with the second valve rod 1651, one end of the second valve rod 1651 is arranged in the second valve hole; the second driving structure 1652 is used for driving the second valve rod 1651 to reciprocate in the second valve hole to open and close the second water outlet 1647.

[0094] Preferably, the second driving structure 1652 drives the second valve rod 1651 to reciprocate in the second valve hole in an electromagnetic driving mode.

[0095] The second driving structure 1652 comprises a second sleeve 16521, a second reset spring 16522 and a second electromagnetic coil 16523, the other end of the second valve rod 1651 is arranged in the second sleeve 16521; the second reset spring 16522 is sleeved on the second valve rod 1651, and one end of the second reset spring 16522 is fixedly connected with the second sleeve 16521, and the other end is abutted with a limiting portion arranged on the second valve rod 1651; the second electromagnetic coil 16523 is sleeved outside the second sleeve 16521, and is used for generating a magnetic field to attract the second valve rod 1651 to overcome the elastic force of the second reset spring 16522, so that the second valve rod 1651 moves and opens the second water outlet 1647. Figure 3 As shown, the second electromagnetic coil 16523 is connected with the control unit of the gas water heater through a second power terminal 16524.

[0096] It should be pointed out that the second valve rod 1651 is abutted with the second water outlet 1647 under the action of the elastic force of the second reset spring 16522, so that the second water outlet 1647 is kept in a normally closed state. When the second electromagnetic coil 16523 is powered, an electromagnetic field is generated, and under the action of the electromagnetic field, the second valve rod 1651 overcomes the elastic force of the second reset spring 16522, so that the second valve rod 1651 moves away from the second water outlet 1647 to open the second water outlet 1647.

[0097] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above-mentioned technical content without departing from the technical solution of the present application are still within the scope of the present application.

Claims

1. A water inlet valve for a gas water heater, characterised in that, Comprise: a housing having a water inlet pipe and a first water outlet pipe; a first valve body located in the housing, the first valve body having a first passage and a second passage between the water inlet pipe and the first water outlet pipe, wherein the second passage is a normally open passage; and a first valve core assembly connected with the first valve body for controlling the opening and closing of the first passage.

2. The water inlet valve for a gas water heater according to claim 1, wherein: the first valve body comprises a first valve seat and a first partition plate connected with the housing; wherein the first partition plate and the first valve seat form a first water passing cavity, and a hollow structure of a first sleeve forms a first water outlet cavity in communication with the first water outlet pipe; a first water inlet opening and a first water outlet opening are formed on the first partition plate, the first water inlet opening is in communication with the water inlet pipe and the first water passing cavity, and the first valve core assembly is connected with the first valve seat for opening and closing the first water outlet opening to control the opening and closing of the first water outlet opening and the first water outlet cavity, thereby controlling the opening and closing of the first passage.

3. The water inlet valve for a gas water heater according to claim 2, wherein: the first valve body further comprises a first sleeve connected with the housing; a water distribution opening is provided on the first sleeve, the water distribution opening is in communication with the water inlet pipe and the first water outlet cavity to form the second passage.

4. The water inlet valve for a gas water heater according to claim 3, wherein: a first valve hole is formed on the first valve seat; wherein the first valve core assembly comprises: a first valve rod, one end of the first valve rod being provided in the first valve hole; and a first driving structure connected with the first valve rod for driving the first valve rod to reciprocate in the first valve hole to open and close the first water outlet opening.

5. The water inlet valve for a gas water heater according to any one of claims 1 to 4, wherein: the housing further comprises a second water outlet pipe and a valve cavity in communication with the water inlet pipe; wherein a second valve body is provided in the valve cavity, and a second valve core assembly for controlling the opening and closing of the water inlet pipe and the second water outlet pipe is connected with the second valve body.

6. The water inlet valve for a gas water heater according to claim 5, wherein: in the direction of water flow in the water inlet pipe, the second water outlet pipe is located upstream of the first water outlet pipe.

7. The water inlet valve for a gas water heater according to claim 5, wherein: the second water outlet pipe and the valve cavity are provided on the housing at a position that does not interfere with the water flow in the water inlet pipe.

8. The water inlet valve for a gas water heater according to claim 5, wherein: a water temperature detection opening and / or a flow rate detection opening are formed on the housing; wherein a temperature detection unit is connected with the water temperature detection opening, and / or a flow rate detection unit is connected with the flow rate detection opening.

9. The water inlet valve for a gas water heater according to claim 5, wherein: the water inlet pipe, the first water outlet pipe, the second water outlet pipe, and the valve cavity are integrally formed. ​ 10. A gas water heater, characterized by, Water inlet valve for a gas water heater comprising a valve according to any one of claims 1 to 9.

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