Water inlet valve assembly and gas heating water heater

Abstract

The water inlet valve assembly comprises a valve body, the valve body is provided with a water inlet flow channel, a middle flow channel and a water supplementing flow channel, the middle flow channel is communicated with the water inlet flow channel, the other end of the middle flow channel is communicated with the water supplementing flow channel through a water supplementing opening, and a connector is arranged at the other end of the middle flow channel; the connecting piece is connected with the joint; the water replenishing pressure relief rod penetrates through the connecting piece and extends into the middle flow channel; a flow guide channel is formed in the end face of the first end, a pressure relief cavity communicated with the flow guide channel is formed in the end face of the second end, and a pressure relief assembly is arranged in the pressure relief cavity and used for opening or blocking the flow guide channel. The valve body, the connecting piece and the water replenishing pressure relief rod are arranged, the valve body is provided with the water inlet flow channel, the middle flow channel and the water replenishing flow channel, the movable water replenishing pressure relief rod can open or block the water replenishing port, and the water inlet valve assembly integrates the function of replenishing water to a heating pipeline system; the pressure relief assembly can open or block the flow guide channel, so that the gas heating water heater can operate safely.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and particularly relates to a water inlet valve assembly and a gas heating water heater. Background Art

[0002] Currently, a gas heating system mainly includes a water circuit system (pipes, valves, and elbows), a heat dissipation system (radiator fins, etc.), and a heat source (gas heating furnace). A gas heating furnace is a commonly used device for winter heating in cold regions and usually has the functions of both heating and supplying domestic hot water. When the pressure of the hot water system suddenly increases due to some reason, it usually relieves pressure and leaks water at the weakest point in the domestic water pipeline, resulting in water immersion inside the gas heating furnace and affecting the safe operation of the gas heating furnace.

[0003] A Chinese patent with the publication number CN215110679U discloses a water replenishing valve integrating a pressure relief function, which includes an adjusting nut threadedly connected to a water inlet valve assembly, a push rod threadedly connected to the adjusting nut, and a handle connected to the push rod; the adjusting nut is sleeved on one end of the push rod, and the handle is sleeved on the other end of the push rod; an adjusting plug screw-threadedly connected to the handle is arranged inside the bottom of the handle, an adjusting spring is arranged above the adjusting plug, a plug seat is arranged above the adjusting spring, and a plug is arranged above the plug seat; a through hole is axially formed in the adjusting plug; wherein, the connection mode between the push rod and the handle is a screw fixed connection, a positioning groove is formed in the side wall of the push rod, a threaded mounting hole is formed in the side wall of the handle, and the screw is installed in the mounting hole and passes through the positioning groove; a sealing ring is arranged at the connection between the push rod and the handle.

[0004] The above water replenishing valve integrates the functions of water replenishment and pressure relief for the domestic water pipeline. When the pressure in the domestic water pipeline is too high, it can release the pressure in the domestic water pipeline; however, when the pressure of the heating pipeline system increases due to some reason, the heating pipeline system cannot relieve pressure, which will also cause pressure relief and water leakage at the weak point, affecting the safe operation. In view of this, how to design a water inlet valve with both the functions of water replenishment and pressure relief for the heating pipeline system to improve the use safety is the technical problem to be solved by the present invention. Summary of the Invention

[0005] The present invention provides a water inlet valve assembly and a gas heating water heater, which realize a water inlet valve with the functions of water replenishment and pressure relief for the heating pipeline system to improve the use safety.

[0006] To achieve the above technical purpose, the present invention is realized by adopting the following technical solutions: In a first aspect, the present invention provides a water inlet valve assembly, including: Valve body, the valve body having a water inlet flow channel, an intermediate flow channel, and a make-up water flow channel, one end of the intermediate flow channel being in communication with the water inlet flow channel, and the other end being in communication with the make-up water flow channel through a make-up water port, and a joint communicating with the intermediate flow channel being further provided at the other end of the intermediate flow channel; Connecting member, the connecting member being detachably and sealingly connected to the joint; and, Make-up water and pressure relief rod, a first end portion of the make-up water and pressure relief rod passing through the connecting member and extending into the intermediate flow channel, the make-up water and pressure relief rod being movably connected to the connecting member, the make-up water and pressure relief rod being configured to open or block the make-up water port; a diversion channel communicating with the make-up water flow channel being provided on an end surface of the first end portion, a pressure relief cavity communicating with the diversion channel being provided on an end surface of a second end portion of the make-up water and pressure relief rod, and a pressure relief assembly being provided in the pressure relief cavity, the pressure relief assembly being configured to open or block the diversion channel.

[0007] In some embodiments of the present application, an annular groove is provided on the end surface of the first end portion, the groove surrounding the outside of the diversion channel, and a sealing gasket is provided in the groove, the sealing gasket being in sealing cooperation with the end surface of the make-up water port.

[0008] By providing an annular groove on the end surface of the first end portion, it is convenient to fix the sealing gasket. When the heating pipeline system does not require make-up water, the sealing gasket can seal the gap between the make-up water and pressure relief rod and the end surface of the make-up water port, avoiding water leakage.

[0009] In some embodiments of the present application, the diversion channel is arranged along the axial direction of the make-up water and pressure relief rod.

[0010] By arranging the diversion channel along the axial direction of the make-up water and pressure relief rod, in the case of rotating the make-up water and pressure relief rod, the smoothness of the make-up water flow channel and the diversion channel can be ensured.

[0011] In some embodiments of the present application, the connecting member and the make-up water and pressure relief rod are threadedly connected.

[0012] By threadedly connecting the connecting member and the make-up water and pressure relief rod, the connection strength is high, the occupied space is small, it can withstand large tensile and shear forces, and it is not easy to loosen; it is convenient for the user to rotate the make-up water and pressure relief rod to open or block the make-up water port.

[0013] In some embodiments of the present application, an annular groove is provided on the outer peripheral surface of the make-up water and pressure relief rod located inside the connecting member, and a sealing ring is provided in the annular groove, the sealing ring being in sealing cooperation with the inner wall surface of the connecting member.

[0014] By providing an annular groove on the outer peripheral surface of the make-up water and pressure relief rod, a sealing ring is provided in the annular groove, and the sealing ring seals the gap between the connecting member and the make-up water and pressure relief rod, preventing water leakage.

[0015] In some embodiments of the present application, the pressure relief component includes a plug, an elastic member, and a fastener. The fastener is disposed at the opening of the pressure relief chamber, and a pressure relief hole communicating with the pressure relief chamber is provided on the fastener; the plug is located at the bottom of the pressure relief chamber, and a pressure relief gap is formed between the plug and the inner wall surface of the pressure relief chamber; the elastic member is clamped between the plug and the fastener, so that the plug elastically abuts against the end surface of the diversion channel and seals the diversion channel.

[0016] By forming a pressure relief gap between the plug and the inner wall surface of the pressure relief chamber, when the pressure relief component relieves pressure, the elastic member is compressed, water flows from the diversion channel into the pressure relief gap, then enters the pressure relief chamber from the pressure relief gap, and finally is discharged through the pressure relief hole, realizing pressure relief.

[0017] In some embodiments of the present application, the fastener is threadedly connected to the pressure relief chamber, and a tool groove is provided on the end surface of the fastener away from the diversion channel.

[0018] By threadedly connecting the fastener to the pressure relief chamber, it is convenient to adjust the distance between the fastener and the plug, thereby adjusting the predetermined pressure in the pipeline system; a tool groove is provided on the end surface of the fastener away from the diversion channel, which is convenient for rotating the fastener.

[0019] In some embodiments of the present application, the elastic member includes a compression spring.

[0020] By providing a compression spring, when the pressure in the heating pipeline system exceeds the predetermined pressure, the compression spring is compressed, the plug moves away from the diversion channel, realizing pressure relief. When the pressure in the heating pipeline system returns to normal, the compression spring returns to its original shape and presses against the plug to seal the diversion channel.

[0021] In some embodiments of the present application, the water inlet valve assembly further includes: A rotating handle, the rotating handle is fixedly connected to the second end of the water replenishing and pressure relief rod, and a through hole communicating with the pressure relief hole is provided in the rotating handle.

[0022] By providing a rotating handle, the rotating handle is fixedly connected to the second end of the water replenishing and pressure relief rod, and a through hole communicating with the pressure relief hole is provided in the rotating handle. An operator can drive the water replenishing and pressure relief rod to rotate by rotating the rotating handle, which is convenient for opening or closing the water replenishing port; by providing a through hole communicating with the pressure relief hole in the rotating handle, the pressure relief hole can be communicated with the outside, so that it is convenient for water to be discharged during pressure relief.

[0023] In a second aspect, the present invention provides a gas heating and hot water boiler, including the water inlet valve assembly according to any one of the embodiments in the first aspect above.

[0024] Compared with the prior art, the advantages and positive effects of the present invention are as follows: By providing a valve body, a connecting member, and a water replenishing and pressure relieving rod, the valve body has a water inlet flow channel, an intermediate flow channel, and a water replenishing flow channel. The intermediate flow channel connects the water inlet flow channel and the water replenishing flow channel, and the water replenishing flow channel is connected to the heating pipeline system. The water replenishing and pressure relieving rod is movably connected to the connecting member, and the connecting member is detachably and sealingly connected to the joint. By moving the water replenishing and pressure relieving rod, the water replenishing and pressure relieving rod opens or blocks the water replenishing port, so that the water inlet valve assembly integrates the function of replenishing water to the heating pipeline system; A diversion channel communicating with the water replenishing flow channel is provided on the end face of the first end of the water replenishing and pressure relieving rod, and a pressure relief cavity communicating with the diversion channel is provided on the end face of the second end of the water replenishing and pressure relieving rod. A pressure relief assembly is provided in the pressure relief cavity. When the pressure of the heating pipeline system is normal, the pressure relief assembly blocks the diversion channel; when the pressure of the heating pipeline system exceeds the normal value, the pressure relief assembly opens the diversion channel, and the pressure relief cavity communicates with the outside. The high-pressure water in the heating pipeline system is discharged to the outside of the gas heating hot water furnace through the water replenishing flow channel, the diversion channel, and the pressure relief cavity, thereby reducing the pressure of the heating pipeline system and enabling the gas heating hot water furnace to operate safely; The water replenishing and pressure relieving rod has a simple structure, is convenient to operate, and is convenient for maintenance and installation. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 1 FIG. 1 is a schematic structural diagram of a water inlet valve assembly provided by the present invention; Figure 2 FIG. 2 is a sectional view of a water inlet valve assembly provided by the present invention; Figure 3 FIG. 3 is a partial sectional view of another water inlet valve assembly provided by the present invention; Figure 4 FIG. 4 is a partial sectional view of another water inlet valve assembly provided by the present invention; Figure 5 FIG. 5 is a schematic structural diagram of a water replenishing and pressure relieving rod provided by the present invention; Figure 6 FIG. 6 is a sectional view of a water replenishing and pressure relieving rod provided by the present invention.

[0027] DESCRIPTION OF REFERENCE NUMERALS: Valve body 1, water inlet flow channel 11, water inlet 111, water outlet 112, intermediate flow channel 12, water replenishing flow channel 13, water replenishing port 14, joint 15; Connecting member 2; Water replenishing and pressure relief rod 3, diversion channel 31, pressure relief cavity 32, pressure relief component 33, plug 331, elastic member 332, fastener 333, pressure relief hole 3331, groove 34, gasket 341, annular groove 35, sealing ring 351, pressure relief gap 36, first end 37, second end 38; Rotating handle 4; Inlet of heating water flow 5; Outlet of heating water flow 6. Embodiment

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the present invention, unless otherwise clearly defined and limited, the terms such as "installation", "connection", "connection", "fixation", etc. 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0032] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0033] A gas-fired heating and hot water boiler is a water heater that uses gas as the main energy material and transfers the high-temperature heat generated by gas combustion to the cold water flowing through the heat exchanger to achieve the purpose of preparing hot water.

[0034] A gas-fired heating and hot water boiler generally includes a housing, and components such as a burner, a heat exchanger, a blower, and a wind hood disposed inside the housing.

[0035] Among them, gas is delivered to the burner, and the gas is ignited by an ignition device so that the burner burns the delivered gas, thereby generating heat.

[0036] The heat exchanger is provided with heat exchange tubes. One end of the heat exchange tubes is communicated with the water supply pipeline, and the other end of the heat exchange tubes is communicated with a shower head or a faucet, etc.

[0037] The heat generated by the burner burning gas is used to heat the heat exchange tubes so that the water temperature in the heat exchange tubes rises to form hot water.

[0038] When the gas-fired heating and hot water boiler is working, the cold water provided by the water supply pipeline flows into the heat exchange tubes, and then is heated by the heating source generated by the burner into hot water, and then flows out from the shower head or the faucet through the hot water valve for users to use.

[0039] At the same time, during the operation of the gas-fired heating and hot water boiler, the blower is powered on and operates simultaneously. Under the action of the blower, the flue gas generated by the burner is discharged to the outside.

[0040] Combined Figures 1 to 6 As shown, the embodiment of the present disclosure provides an inlet valve assembly, and the inlet valve assembly includes a valve body 1, a connecting member 2, and a make-up water and pressure relief rod 3.

[0041] The valve body 1 is in a tubular structure and can be made by an injection molding process or a die-casting process for metals. The valve body 1 has a water inlet flow channel 11, an intermediate flow channel 12, and a make-up water flow channel 13. At the top end of the valve body 1, there is an outlet 112 of the water inlet flow channel 11, and a temperature sensor and a water flow sensor are provided at the outlet 112 of the water inlet flow channel 11. At the bottom end of the valve body 1, there is an inlet 111 of the water inlet flow channel 11. Among them, the outlet 112 of the water inlet flow channel 11 is adapted to communicate with the heated end of the plate heat exchanger. The inlet 111 of the water inlet flow channel 11 at the bottom end of the valve body 1 is communicated with the tap water end. In order to facilitate the fixation of the valve body 1, ear plates can also be provided on the outer periphery of the valve body 1, and fixing holes are provided on the ear plates, which can be used to fix the valve body 1.

[0042] Combined with Figure 2 , Figure 3 and Figure 4 As shown, one end of the intermediate flow channel 12 is connected to the water inlet flow channel 11, and the other end is connected to the make-up water flow channel 13 through a make-up water port 14. The valve body 1 is also provided with a heating water inlet 5 and a heating water outlet 6. The heating water inlet 5 is adapted to communicate with the heating end of the plate heat exchanger. The heating water inlet 5 and the heating water outlet 6 are connected. The make-up water flow channel 13 is communicated with the heating water inlet 5 and the heating water outlet 6 of the heating pipeline system. In this way, tap water sequentially passes through the water inlet flow channel 11, the intermediate flow channel 12, the make-up water port 14, and the make-up water flow channel 13 to enter the heating pipeline system, thereby replenishing water to the heating pipeline system. At the other end of the intermediate flow channel 12, a joint 15 communicating with the intermediate flow channel 12 is also provided, and the position of the joint 15 is directly opposite to the position of the make-up water port 14; The connector 2 is detachably connected to the joint 15 in a sealed manner; Specifically, the connector 2 and the joint 15 can be connected by threads, or by providing flange plates on the end faces of the joint 15 and the connector 2. Installation holes are provided on the flange plates, and the joint 15 and the connector 2 are fixedly connected by bolts. It should be noted that in order to prevent water leakage at the connection between the joint 15 and the connector 2, a sealing gasket is provided at the connection between the joint 15 and the connector 2.

[0043] Combined with Figure 2As shown, the first end 37 of the water replenishing and pressure relief rod 3 passes through the connecting member 2 and extends into the intermediate flow channel 12. The water replenishing and pressure relief rod 3 is movably connected to the connecting member 2 and is configured to open or block the water replenishing port 14. A diversion channel 31 communicating with the water replenishing flow channel 13 is provided on the end face of the first end 37. A pressure relief cavity 32 communicating with the diversion channel 31 is provided on the end face of the second end 38 of the water replenishing and pressure relief rod 3. A pressure relief component 33 is provided in the pressure relief cavity 32 and is configured to open or block the diversion channel 31 to conduct or disconnect the diversion channel 31 and the pressure relief cavity 32. The first end 37 of the water replenishing and pressure relief rod 3 is located inside the valve body 1, and the second end 38 of the water replenishing and pressure relief rod 3 is located outside the valve body 1. The pressure relief cavity 32 communicates with the external environment.

[0044] Specifically: By providing the valve body 1, the connecting member 2 and the water replenishing and pressure relief rod 3, the valve body 1 has a water inlet flow channel 11, an intermediate flow channel 12 and a water replenishing flow channel 13. The intermediate flow channel 12 communicates the water inlet flow channel 11 and the water replenishing flow channel 13. The water replenishing flow channel 13 is communicated with the heating pipeline system. The water replenishing and pressure relief rod 3 is movably connected to the connecting member 2. The connecting member 2 is sealingly and detachably connected to the joint 15 on the intermediate flow channel 12. By moving the water replenishing and pressure relief rod 3, the water replenishing and pressure relief rod 3 opens or blocks the water replenishing port 14. In this way, the water inlet valve assembly integrates the function of replenishing water to the heating pipeline system. A diversion channel 31 communicating with the water replenishing flow channel 13 is provided on the end face of the first end 37 of the water replenishing and pressure relief rod 3. A pressure relief cavity 32 communicating with the diversion channel 31 is provided on the end face of the second end 38 of the water replenishing and pressure relief rod 3. A pressure relief component 33 is provided in the pressure relief cavity 32. When the pressure of the heating pipeline system is normal, the pressure relief component 33 blocks the diversion channel 31. When the pressure of the heating pipeline system exceeds the normal value, the pressure relief component 33 opens the diversion channel 31, and the pressure relief cavity 32 communicates with the outside. The high-pressure water in the heating pipeline system is discharged to the outside of the gas-fired heating hot water boiler through the water replenishing flow channel 13, the diversion channel 31 and the pressure relief cavity 32, thereby reducing the pressure of the heating pipeline system and enabling the gas-fired heating hot water boiler to operate safely.

[0045] Among them, the valve body 1 has a water replenishing state and a pressure relief state. In the water replenishing state, the water replenishing and pressure relief rod 3 is rotated to open the water replenishing port 14 so that the intermediate flow channel 12 is communicated with the water replenishing flow channel 13. The water flow sequentially flows from the water inlet into the water inlet flow channel 11, the intermediate flow channel 12, the water replenishing port 14 and the water replenishing flow channel 13, and the water replenishing flow channel 13 is communicated with the heating pipeline system, thereby completing the water replenishment of the heating pipeline system. In the pressure relief state, the water replenishment and pressure relief rod 3 abuts against the water replenishment port 14, disconnecting the water replenishment flow channel 13 from the intermediate flow channel 12 and conducting the water replenishment flow channel 13 to the diversion channel 31. Under the action of water pressure, the pressure relief assembly 33 opens the diversion channel 31, connecting the diversion channel 31 with the pressure relief cavity 32. The high-pressure water flow in the heating pipeline system enters the water replenishment flow channel 13, flows into the diversion channel 31 from the water replenishment port 14, and flows into the pressure relief cavity 32 from the diversion channel 31 for discharge.

[0046] In some embodiments of the present application, a filter screen is provided in the water inlet flow channel 11 of the valve body 1. The filter screen is used to filter the fluid flowing through the inner cavity of the valve body 1 to prevent impurities from interfering with the normal operation of the valve body 1. The filter screen can be a combination of a plastic mesh and a fixing frame, or a metal mesh with good self-supporting properties, such as a mesh made of stainless steel.

[0047] In some embodiments of the present application, the axis of the water inlet flow channel 11 is parallel to the axis of the diversion channel 31, and the axis of the water inlet flow channel 11 is perpendicular to the axis of the intermediate flow channel 12.

[0048] Combined with Figure 5 As shown, in some embodiments of the present application, an annular groove 34 is provided on the end face of the first end portion 37. The groove 34 surrounds the outside of the diversion channel 31, and a sealing gasket 341 is provided in the groove 34. The sealing gasket 341 is in sealing cooperation with the end face of the water replenishment port 14.

[0049] Specifically, by providing the annular groove 34 on the end face of the first end portion 37, it is convenient to fix the sealing gasket 341. When the heating pipeline system does not require water replenishment, the sealing gasket 341 can seal the gap between the water replenishment and pressure relief rod 3 and the end face of the water replenishment port 14, avoiding water leakage.

[0050] In some embodiments of the present application, the diversion channel 31 is arranged along the axis direction of the water replenishment and pressure relief rod 3.

[0051] Specifically, by arranging the diversion channel 31 along the axis direction of the water replenishment and pressure relief rod 3, when the water replenishment and pressure relief rod 3 is rotated, the smoothness of the water replenishment flow channel 13 and the diversion channel 31 can be ensured.

[0052] In some embodiments of the present application, the connection member 2 and the water replenishment and pressure relief rod 3 are connected by threads.

[0053] Specifically, by connecting the connection member 2 and the water replenishment and pressure relief rod 3 by threads, the connection strength is high, the occupied space is small, it can bear large tensile and shear forces, and it is not easy to loosen; it is convenient for the user to rotate the water replenishment and pressure relief rod 3 to open or block the water replenishment port 14.

[0054] Combined with Figure 2 、 Figure 3 and Figure 6As shown, in some embodiments of the present application, the water replenishing and pressure relief rod 3 is provided with an annular groove 35 on the outer peripheral surface within the connecting member 2, and a sealing ring 351 is arranged in the annular groove 35. The sealing ring 351 is in sealing fit with the inner wall surface of the connecting member 2.

[0055] Specifically, by providing the annular groove 35 on the outer peripheral surface of the water replenishing and pressure relief rod 3, and arranging the sealing ring 351 in the annular groove 35, the sealing ring 351 seals the gap between the connecting member 2 and the water replenishing and pressure relief rod 3, preventing water leakage.

[0056] In some embodiments of the present application, the pressure relief assembly 33 includes a plug 331, an elastic member 332, and a fastener 333. The fastener 333 is arranged at the opening of the pressure relief cavity 32, and a pressure relief hole 3331 communicating with the pressure relief cavity 32 is provided on the fastener 333; the plug 331 is located at the bottom of the pressure relief cavity 32, and a pressure relief gap 36 is formed between the plug 331 and the inner wall surface of the pressure relief cavity 32; the elastic member 332 is clamped between the plug 331 and the fastener 333, so that the plug 331 elastically abuts against the end face of the diversion channel 31 and blocks the diversion channel 31.

[0057] Specifically, by forming the pressure relief gap 36 between the plug 331 and the inner wall surface of the pressure relief cavity 32, when the pressure relief assembly 33 relieves pressure, the elastic member 332 is compressed, water flows from the diversion channel 31 into the pressure relief gap 36, then enters the pressure relief cavity 32 from the pressure relief gap 36, and finally is discharged through the pressure relief hole 3331, realizing pressure relief.

[0058] Specifically, one end of the plug 331 that abuts against the end face of the diversion channel 31 can be made of a material with better elasticity such as rubber, and the other end can be made of ordinary plastic or metal material; of course, the plug 331 can also be entirely made of rubber material. The elastic member 332 can be a spring or an elastic rubber block. It can be understood that in order to ensure the normal flow of the pressure relief cavity 32, the elastic member 332 cannot block the pressure relief cavity 32.

[0059] Combined Figure 6 As shown, in some other embodiments of the present application, the longitudinal section of the plug 331 is in a T shape. The end of the elastic member 332 is embedded in the plug 331.

[0060] In some embodiments of the present application, the fastener 333 is threadedly connected to the pressure relief cavity 32, and a tool groove is provided on the end face of the fastener 333 away from the diversion channel 31.

[0061] Specifically, by threadedly connecting the fastener 333 to the pressure relief cavity 32, it is convenient to adjust the distance between the fastener 333 and the plug 331, thereby adjusting the predetermined pressure in the pipeline system; a tool groove is provided on the end face of the fastener 333 away from the diversion channel 31, which is convenient for rotating the fastener 333.

[0062] In some embodiments of the present application, the elastic member 332 includes a compression spring.

[0063] Specifically, by providing a compression spring, when the pressure of the heating pipeline system exceeds a predetermined pressure, the compression spring is compressed, and the plug 331 moves away from the diversion channel 31 to achieve pressure relief. When the pressure of the heating pipeline system returns to normal, the compression spring returns to its original shape and pushes the plug 331 to block the diversion channel 31.

[0064] In some embodiments of the present application, the water inlet valve assembly further includes a rotating handle 4.

[0065] The rotating handle 4 is fixedly connected to the second end 38 of the water replenishing and pressure relief rod 3, and a through hole communicating with the pressure relief hole 3331 is provided in the rotating handle 4.

[0066] Specifically, by providing the rotating handle 4, the rotating handle 4 is fixedly connected to the second end 38 of the water replenishing and pressure relief rod 3, and a through hole communicating with the pressure relief hole 3331 is provided in the rotating handle 4. An operator can drive the water replenishing and pressure relief rod 3 to rotate by rotating the rotating handle 4, which is convenient for opening or closing the water replenishing port 14; by providing a through hole communicating with the pressure relief hole 3331 in the rotating handle 4, the pressure relief hole 3331 can communicate with the outside, so that water can be discharged easily during pressure relief.

[0067] The water replenishing process is as follows. Referring to Figure 3 shown, the arrow indicates the direction of water replenishing. First, rotate the rotating handle 4 to loosen the water replenishing and pressure relief rod 3, so that the first end 37 of the water replenishing and pressure relief rod 3 moves away from the water replenishing port 14. In this way, a distance is created between the water replenishing and pressure relief rod 3 and the water replenishing port 14. After tap water enters the water inlet flow channel 11 from the water inlet, it flows into the intermediate flow channel 12. Since the water replenishing and pressure relief rod 3 is loosened, the intermediate flow channel 12 communicates with the water replenishing flow channel 13. After the water flows through the intermediate flow channel 12, it flows into the water replenishing port 14 and enters the water replenishing flow channel 13, and the water replenishing flow channel 13 communicates with the heating pipeline system, so that the heating pipeline system can be replenished with water.

[0068] The pressure relief process is as follows. Referring to Figure 4 shown, Figure 4The direction of the arrow is the pressure relief direction, that is, the direction in which the high-pressure water flow is discharged. Specifically, in the normal use state, the water replenishment and pressure relief rod 3 is in a tightened state. When the heating pipeline system of the gas heating hot water boiler causes the pressure to suddenly increase due to some situation, and after the pressure increases to the pressure relief threshold, under the action of the high-pressure water, the high-pressure water pushes the plug 331 of the pressure relief component 33 downward, and the elastic member 332 deforms and is compressed. The pressure relief cavity 32 communicates with the diversion channel 31 through the pressure relief gap 36. The high-pressure water in the heating pipeline system passes through the water replenishment flow channel 13, the diversion channel 31, the pressure relief gap 36, and the pressure relief cavity 32, and finally is discharged to the outside of the gas heating hot water boiler through the pressure relief hole 3331, thereby reducing the pressure of the heating pipeline system and playing a protective role for the gas heating hot water boiler; when the pressure of the heating pipeline system returns to normal, the elastic member 332 resumes deformation, and the elastic member 332 pushes the plug 331 to re-seal the diversion channel.

[0069] In a second aspect, the present invention provides a gas heating hot water boiler, including the water inlet valve assembly according to any one of the embodiments in the first aspect above, and thus has all the beneficial effects of the water inlet valve assembly according to any one of the embodiments in the first aspect above, which will not be elaborated here.

[0070] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or equivalently replace some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. An inlet valve assembly, characterized in that, comprising: a valve body having an inlet water flow channel, an intermediate water flow channel, and a makeup water flow channel, one end of the intermediate water flow channel is communicated with the inlet water flow channel, and the other end is communicated with the makeup water flow channel through a makeup water port, and a joint communicated with the intermediate water flow channel is further provided at the other end of the intermediate water flow channel; a connecting member, the connecting member is detachably and sealingly connected to the joint; and, a makeup water and pressure relief rod, the first end of the makeup water and pressure relief rod passes through the connecting member and extends into the intermediate water flow channel, the makeup water and pressure relief rod is movably connected to the connecting member, and the makeup water and pressure relief rod is configured to open or block the makeup water port; a diversion channel communicating with the makeup water flow channel is provided on the end surface of the first end, a pressure relief cavity communicating with the diversion channel is provided on the end surface of the second end of the makeup water and pressure relief rod, and a pressure relief assembly is provided in the pressure relief cavity, and the pressure relief assembly is configured to open or block the diversion channel.

2. The inlet valve assembly according to claim 1, characterized in that, an annular groove is provided on the end surface of the first end, the groove surrounds the outside of the diversion channel, and a sealing gasket is provided in the groove, and the sealing gasket is in sealing cooperation with the end surface of the makeup water port.

3. The inlet valve assembly according to claim 1, characterized in that, the diversion channel is arranged along the axial direction of the makeup water and pressure relief rod.

4. The inlet valve assembly according to claim 1, characterized in that, the connecting member and the makeup water and pressure relief rod are connected by threads.

5. The inlet valve assembly according to claim 1, characterized in that, an annular groove is provided on the outer peripheral surface of the makeup water and pressure relief rod located inside the connecting member, and a sealing ring is provided in the annular groove, and the sealing ring is in sealing cooperation with the inner wall surface of the connecting member.

6. The inlet valve assembly according to any one of claims 1 to 5, characterized in that, the pressure relief assembly includes a plug, an elastic member, and a fastener, the fastener is arranged at the opening of the pressure relief cavity, and a pressure relief hole communicating with the pressure relief cavity is provided on the fastener; the plug is located at the bottom of the pressure relief cavity, and a pressure relief gap is formed between the plug and the inner wall surface of the pressure relief cavity; the elastic member is clamped between the plug and the fastener, so that the plug elastically abuts against the end surface of the diversion channel and blocks the diversion channel.

7. The inlet valve assembly according to claim 6, characterized in that, the fastener is threadedly connected to the pressure relief cavity, and a tool groove is provided on the end surface of the fastener away from the diversion channel.

8. The inlet valve assembly according to claim 6, characterized in that, the elastic member includes a compression spring.

9. The inlet valve assembly according to claim 6, characterized in that, the inlet valve assembly further includes: a rotary handle, the rotary handle is fixedly connected to the second end of the makeup water and pressure relief rod, and a through hole communicating with the pressure relief hole is provided in the rotary handle.

10. A gas-fired heating and hot water boiler, characterized in that, comprising the inlet valve assembly according to any one of claims 1 to 9.

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