Integrated combination valve and gas water heater

Abstract

The utility model discloses an integrated combination valve and a gas water heater, the integrated combination valve is arranged on a gas pipeline of the gas water heater, is electrically connected with a water heater body, and comprises a user end and a gas source end; the integrated combination valve comprises a gas valve and an electromagnetic valve; the electromagnetic valve is arranged between the gas source end and the gas valve and used for closing a gas pipeline, leading to the user end, of the gas source end when the water heater body breaks down. The problems that a traditional gas self-closing valve cannot be linked with the water heater end, and when the water heater end breaks down, an electromagnetic valve cannot be closed in time, so that gas leaks are solved, the safety performance of the gas self-closing valve is improved, and the life and property safety of citizens is effectively guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of gas self-closing valves, and more specifically, relates to an integrated combined valve and a gas water heater. Background Art

[0002] Gas water heaters, also known as gas water heaters, are gas appliances that use gas as fuel and transfer heat to cold water flowing through a heat exchanger through combustion and heating to prepare hot water. As a clean and efficient energy source, gas has brought a lot of convenience to our lives. However, safety issues such as gas leaks and explosions are also common. According to statistics, the property losses and casualties caused by gas leaks, explosions and other accidents are very serious every year across the country. Therefore, it has become a top priority to strengthen gas safety management and protect the lives and property of citizens.

[0003] When the pressure in the gas pipeline becomes abnormal, the pressure self-closing valve and solenoid valve of the gas water heater will automatically close to prevent the gas from continuing to leak out, thereby protecting the lives and property of citizens.

[0004] However, the solenoid valve of the existing gas water heater is usually linked only with the self-closing valve. The solenoid valve will automatically close only when the self-closing valve fails. Once the water heater fails, the solenoid valve will not be closed in time, resulting in gas leakage, which cannot effectively protect the lives and property of citizens. Utility Model Content

[0005] In view of the problem that the traditional gas self-closing valve cannot be linked with the water heater end, resulting in low safety performance, the purpose of the utility model is to provide an integrated combination valve, which is arranged on the gas pipeline of the gas water heater and electrically connected to the water heater body, including the user end and the gas source end; the integrated combination valve includes a gas valve and a solenoid valve; the solenoid valve is arranged between the gas source end and the gas valve, and is used to close the gas pipeline from the gas source end to the user end when the water heater body fails.

[0006] Furthermore, the solenoid valve includes: a valve body, which is provided with a first valve port; a valve cover, which is movably arranged above the first valve port and is used to open or close the first valve port; a valve core, which passes through the valve cover from the middle of the valve cover and can drive the valve cover to move up and down; wherein, an arc-shaped sealing surface is provided on the side of the first valve port close to the valve cover.

[0007] Furthermore, the sealing surface of the first valve port includes: a sealing plane; a first sealing inclined surface, arranged on the outer side of the sealing plane and obliquely connected to the sealing plane; and a second sealing arc surface, arranged on the inner side of the sealing plane and obliquely connected to the sealing plane.

[0008] Furthermore, the first sealing inclined surface and the second sealing arc surface are arranged to be inclined downward.

[0009] Furthermore, an annular sealing surface is provided on one side of the valve cover close to the first valve port, the inner diameter of the annular sealing surface is smaller than the inner diameter of the first valve port, and the outer diameter of the annular sealing surface is larger than the outer diameter of the first valve port, so that the annular sealing surface can cover the sealing surface of the first valve port.

[0010] Furthermore, the valve cover includes: a sealing body, used to seal the first valve port; and a pressure cover, pressed on top of the sealing body; wherein, when the valve cover closes the first valve port, the sealing body is pressed between the pressure cover and the first valve port, and fits with the sealing surface of the first valve port.

[0011] Furthermore, the solenoid valve is provided with a manual pull rod, and the solenoid valve can be manually opened by the manual pull rod.

[0012] Furthermore, the integrated combination valve also includes: a pull rod cover, which is detachably arranged above the solenoid valve and has an accommodating cavity inside for accommodating a manual pull rod; wherein the manual pull rod is arranged in the accommodating cavity; when pulling the manual pull rod, the pull rod cover needs to be removed first.

[0013] Furthermore, the integrated combination valve also includes: a user connector, which is sleeved on the user end of the solenoid valve; wherein the user connector is provided with an internal thread matching the user pipeline, and the solenoid valve is connected to the user pipeline via the user connector.

[0014] Furthermore, the user connector is connected to the solenoid valve via a retaining spring.

[0015] Furthermore, the integrated combination valve further comprises: at least one sealing ring, which is arranged at the connection between the user connector and the user end.

[0016] Furthermore, the utility model provides a gas water heater, which comprises: a water heater body, provided with a fault detection module; any one of the integrated combination valves described above, connected to the gas input pipeline of the water heater body through the user end; wherein the integrated combination valve is electrically connected to the water heater body, and when the fault detection module detects that the water heater body has a fault, the water heater body can control the integrated combination valve to close.

[0017] Furthermore, the gas water heater also includes: a combination valve controller electrically connecting the fault detection module and the integrated combination valve.

[0018] Technical effects and advantages of the utility model:

[0019] 1. It is understandable that by setting the solenoid valve of the integrated combination valve to be electrically connected to the water heater body, the water heater end and the integrated combination valve can be linked. When a fault occurs at the water heater end, the solenoid valve can receive the fault signal at the water heater end, and close the solenoid valve according to the fault signal at the water heater end, cutting off the gas pipeline of the gas water heater, effectively protecting the lives and property of citizens. When the fault at the water heater end is resolved, the solenoid valve can be opened by manually pulling the rod to achieve conduction of the gas pipeline.

[0020] 2. The sealing surface at the valve port of a conventional solenoid valve is a plane, and its sealing contact surface is relatively small. By providing an arc-shaped sealing surface at the first valve port, the contact area between the first valve port and the valve cover can be increased, and the sealing performance is better.

[0021] 3. Traditional gas self-closing valves are usually of one-piece design, and the gas self-closing valve is directly connected to the user end of the self-closing valve. Different user pipe diameters require matching gas self-closing valves of different specifications. By setting a split user connector at the user end of the solenoid valve, user connectors with different specifications of internal threads can be replaced according to different user pipe diameters, thereby improving the applicability of the one-piece combination valve. During factory production, it is only necessary to produce user connectors of different specifications, and then install user connectors of different specifications on the same specification of gas self-closing valves. Compared with producing gas self-closing valves of different specifications, the cost of producing user connectors of different specifications is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an integrated combination valve provided by the present application;

[0023] Figure 2 yes Figure 1 A cross-sectional view of the integrated combination valve;

[0024] Figure 3 yes Figure 1 A cross-sectional view of the connection between the user connector and the solenoid valve;

[0025] Figure 4 yes Figure 1 Exploded view of the connection between the user connector and the solenoid valve;

[0026] Figure 5 yes Figure 2 A partial enlarged view of the middle valve cover and the first valve port;

[0027] Figure 6 is a partial enlarged view of the first valve port;

[0028] Figure 7 It is an exploded diagram of the solenoid valve.

[0029] In the figure:

[0030] 100. Integrated combination valve; 101. Gas source end; 102. User end; 10. Solenoid valve; 11. Power cord; 12. Coil; 13. Iron core; 14. Valve core; 141. Baffle; 15. Valve cover; 151. Pressure cover; 152. Sealing body; 16. Manual pull rod; 17. Pull rod cover; 20. Gas valve; 30. First valve port; 31. Sealing plane; 32. First sealing inclined surface; 33. Second sealing arc surface; 40. User connector; 51. Retaining ring; 52. Sealing ring. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0032] See also Figure 1 , which is a schematic diagram of the structure of an integrated combination valve provided by the present application. Figures 1 to 7 The integrated combination valve 100 is arranged on the gas pipeline of the gas water heater, electrically connected to the water heater body, and includes a user end 101 and a gas source end 102; the integrated combination valve includes a gas valve 20 and a solenoid valve 10; the solenoid valve 10 is arranged between the gas source end 102 and the gas valve 20, and is used to close the gas pipeline from the gas source end 102 to the user end 101 when the water heater body fails. The solenoid valve 10 is provided with a manual pull rod 16, and the solenoid valve 10 can be manually opened by the manual pull rod 16.

[0033] In a specific embodiment, the gas water heater can send an electrical signal to the solenoid valve 10. When the water heater is turned on, the solenoid valve 10 is opened; when the water heater is turned off, the solenoid valve 10 is closed.

[0034] It is understandable that by setting the solenoid valve 10 of the integrated combination valve 100 to be electrically connected to the water heater body, the water heater end and the integrated combination valve 100 can be linked. When a fault occurs at the water heater end, the solenoid valve 10 can receive a fault signal from the water heater end, and close the solenoid valve according to the fault signal from the water heater end, cutting off the gas pipeline of the gas water heater, effectively protecting the lives and property of citizens. When the fault at the water heater end is resolved, the solenoid valve can be opened by manually pulling the rod to achieve conduction of the gas pipeline.

[0035] In a specific embodiment, when the water heater has a fault such as excessive carbon monoxide concentration, lack of oxygen, or flameout, the water heater body sends out an alarm signal, and the solenoid valve 10 can receive the alarm signal and close the solenoid valve 10 in time according to the alarm signal, thereby cutting off the gas pipeline of the gas water heater in time.

[0036] Further, combined with Figure 2 The solenoid valve 10 comprises: a valve body, a valve cover 15, and a valve core 14. The valve body is provided with a first valve port 30; the valve cover 15 is movably arranged above the first valve port 30, and is used to open or close the first valve port 30; the valve core 14 passes through the valve cover 15 from the middle part of the valve cover 15, and can drive the valve cover 15 to move up and down; the first valve port 30 is provided with an arc-shaped sealing surface on one side close to the valve cover 15.

[0037] In a specific embodiment, the solenoid valve 10 includes, for example, a power cord 11, a coil 12, an iron core 13, a valve core 14, a valve cover 15, and a manual pull rod 16. The solenoid valve 10 is a normally closed solenoid valve. When the power cord 11 is energized, a magnetic field is generated around the coil 12, and the magnetic force drives the iron core 13 to move upward. The iron core 13 drives the valve core 14 fixedly connected thereto to move upward, thereby driving the valve cover 15 to move upward through the valve core 14. The valve cover 15 opens the first valve port 30, and the solenoid valve 10 is opened. When the gas pipeline is abnormal and the solenoid valve 10 is automatically closed, the solenoid valve 10 can only be opened by the manual pull rod 16. For example, the manual pull rod 16 is threadedly connected to the iron core 13; the bottom of the manual pull rod 16 is provided with an external thread, and the top of the iron core 13 is provided with a threaded hole. The external thread of the manual pull rod 16 can be screwed into the threaded hole at the top of the iron core 13 to achieve a fixed connection between the manual pull rod 16 and the iron core 13.

[0038] It should be noted that the sealing surface at the valve port of the conventional solenoid valve 10 is a plane, and its sealing contact surface is relatively small. By providing an arc-shaped sealing surface at the first valve port 30, the contact area between the first valve port 30 and the valve cover 15 can be increased, and the sealing performance is better.

[0039] Further, combined with Figure 6 The sealing surface of the first valve port 30 includes: a sealing plane 31; a first sealing inclined surface 32, which is arranged on the outer side of the sealing plane 31 and connected to the sealing plane 31 in an arc; and a second sealing arc surface 33, which is arranged on the inner side of the sealing plane 31 and connected to the sealing plane 31 in an oblique manner. For example, the first sealing inclined surface 32 can be an inclined surface or an arc surface, which is not limited here.

[0040] It should be noted that the full arc surface sealing surface is difficult to process and has a relatively high processing cost. By combining the sealing plane 31 with the sealing arc surface, it is possible to improve the sealing performance of the solenoid valve 10 while avoiding a significant increase in processing difficulty and processing cost.

[0041] Further, combined with Figure 6 The first sealing inclined surface 32 and the second sealing arc surface 33 are arranged to be inclined downward.

[0042] It should be noted that when the gas is impure, there may be foreign matter in the gas pipeline. When the foreign matter is located at the sealing surface of the valve port, the foreign matter will stay on the plane because the sealing surface is a plane. When the solenoid valve 10 is closed, the foreign matter is located between the sealing surface of the valve port and the valve cover 15, so the sealing surface of the valve port and the valve cover 15 cannot be completely fitted, which will affect the sealing performance of the solenoid valve 10 at the valve port.

[0043] By setting the first sealing bevel 32 and the second sealing arc surface 33 to be inclined downward, the impurities and foreign objects in the gas pipeline cannot stay on the sealing surface of the first valve port 30. When the impurities and foreign objects are located at the sealing surface of the first valve port 30, since the outer side of the sealing plane 31 is provided with the first sealing bevel 32 inclined downward, and the inner side of the sealing plane 31 is provided with the second sealing arc surface 33 inclined downward, the impurities and foreign objects can slide along the first sealing bevel 32 or the second sealing arc surface 33 and will not stay on the sealing surface of the first valve port 30. When the solenoid valve 10 is closed, the valve cover 15 can be completely fitted with the sealing surface of the first valve port 30, thereby ensuring the sealing performance at the first valve port 30.

[0044] In a specific embodiment, the valve cover 15 is provided with an annular sealing surface on one side close to the first valve port 30, the inner diameter of the annular sealing surface is smaller than the inner diameter of the first valve port 30, and the outer diameter of the annular sealing surface is larger than the outer diameter of the first valve port 30, so that the annular sealing surface can cover the sealing surface of the first valve port 30. For example, a baffle 141 is further provided at the bottom of the valve core 14, and the baffle 141 can prevent the valve cover from falling off the valve core 14. Among them, the diameter of the baffle 141 is larger than the inner diameter of the annular sealing surface, and the diameter of the baffle 141 is smaller than the inner diameter of the first valve port 30.

[0045] Furthermore, the valve cover 15 includes: a sealing body 152, which is used to seal the first valve port 30; and a pressure cover 151, which is pressed on the top of the sealing body 152; wherein, when the valve cover 15 closes the first valve port 30, the sealing body 152 is pressed between the pressure cover 151 and the first valve port 30, and fits with the sealing surface of the first valve port 30. The bottom of the sealing body 152 may be provided with a sealing groove corresponding to the shape of the first valve port 30, or may be an elastic sealing member that can be deformed according to the shape of the first valve port 30. For example, a sealing groove is provided at the bottom of the pressure cover 151, and the sealing body 152 is embedded in the sealing groove. The sealing body 152 and the pressure cover 151 may be bonded or directly clamped.

[0046] In a specific embodiment, the sealing body 152 is a rubber part. When squeezed by the pressure cover 151, the sealing surface of the sealing body 152 can be deformed so that the sealing surface of the sealing body 152 adapts to the shape of the first valve port 30 and fits tightly against the sealing surface of the first valve port 30.

[0047] By configuring the valve cover 15 to include a sealing body 152 and a pressure cover 151 , when the valve cover 15 closes the first valve port 30 , the pressure cover 151 can squeeze the sealing body 152 , so that the sealing body 152 and the first valve port 30 fit more closely and have better sealing performance.

[0048] Furthermore, the integrated combination valve 100 further includes: a rod cover 17, which is detachably disposed above the solenoid valve 10, and has an accommodating cavity for accommodating the manual rod 16; wherein the manual rod 16 is disposed in the accommodating cavity; when the manual rod 16 is pulled, the rod cover 17 needs to be removed first. For example, the rod cover 17 is rotatably disposed on the top of the solenoid valve 10, and the rod cover 17 can be removed from the top of the solenoid valve 10 by rotating.

[0049] By providing a pull rod cover 17 above the solenoid valve 10, the safety performance of the integrated combination valve 100 can be further improved to avoid accidental touching of the manual pull rod 16 and mistakenly opening the solenoid valve 10 in a closed state, thereby preventing gas leakage.

[0050] Furthermore, the integrated combination valve 100 also includes: a user connector 40, which is sleeved on one side of the solenoid valve 10 close to the user end 101; wherein the user connector 40 is provided with an internal thread matching the user pipeline, and the solenoid valve 10 is connected to the user pipeline through the user connector 40.

[0051] It should be noted that the traditional gas self-closing valve is usually an integrated design, and the gas self-closing valve is directly connected to the user end 101 of the self-closing valve. Different user pipe diameters require matching gas self-closing valves of different specifications. By providing a split user connector 40 at the user end 101 of the solenoid valve 10, user connectors 40 with internal threads of different specifications can be replaced according to different user pipe diameters, thereby improving the applicability of the integrated combination valve 100. During factory production, it is only necessary to produce user connectors 40 of different specifications, and then install user connectors 40 of different specifications on the same specification of gas self-closing valves. Compared with producing gas self-closing valves of different specifications, the cost of producing user connectors 40 of different specifications is lower.

[0052] Further, combined with Figure 3 and Figure 4, the user connector 40 is connected to the solenoid valve 10 via a retaining spring 51. For example, the retaining spring 51 is hexagonal in shape.

[0053] Furthermore, the integrated combination valve 100 further includes: at least one sealing ring 52, which is arranged at the connection between the user connector 40 and the solenoid valve 10. Since the user connector 40 and the solenoid valve 10 are of split design, it is necessary to consider the sealing performance of the connection between the user connector 40 and the solenoid valve 10. By providing at least one sealing ring 52 at the connection between the user connector 40 and the solenoid valve 10, the sealing performance of the connection between the user connector 40 and the solenoid valve 10 can be guaranteed, and gas leakage from the connection between the user connector 40 and the solenoid valve 10 can be avoided.

[0054] In a specific embodiment, two sealing rings 52 are provided at the connection between the user connector 40 and the solenoid valve 10 .

[0055] Furthermore, the utility model provides a gas water heater, which comprises: a water heater body, provided with a fault detection module; any one of the integrated combination valves described above, connected to the gas input pipeline of the water heater body through the user end 101; wherein the integrated combination valve 100 is electrically connected to the water heater body, and when the fault detection module detects that the water heater body has a fault, the water heater body can control the integrated combination valve 100 to close.

[0056] Furthermore, the gas water heater also includes: a combination valve controller electrically connecting the fault detection module and the integrated combination valve.

[0057] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0058] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. An integrated combination valve, characterized in that: The integrated combination valve (100) is arranged on a gas pipeline of a gas water heater, electrically connected to a water heater body, and comprises a user end (101) and a gas source end (102); the integrated combination valve (100) comprises a gas valve (20) and a solenoid valve (10); the solenoid valve (10) is arranged between the gas source end (102) and the gas valve (20), and is used to close the gas pipeline from the gas source end (102) to the user end (101) when a fault occurs in the water heater body.

2. The integrated combination valve according to claim 1, characterized in that: The solenoid valve (10) comprises: The valve body is provided with a first valve port (30); a valve cover (15) movably disposed above the first valve port (30) and used for opening or closing the first valve port (30); A valve core (14) passes through the valve cover (15) from the middle of the valve cover (15) and can drive the valve cover (15) to move up and down; Wherein, a curved sealing surface is provided on a side of the first valve port (30) close to the valve cover (15).

3. The integrated combination valve according to claim 2, characterized in that: The sealing surface of the first valve port (30) comprises: Sealing plane (31); A first sealing inclined surface (32) is arranged outside the sealing plane (31) and connected to the sealing plane (31) in an arc; The second sealing arc surface (33) is arranged on the inner side of the sealing plane (31) and is obliquely connected to the sealing plane (31).

4. The integrated combination valve according to claim 3, characterized in that: The first sealing inclined surface (32) and the second sealing arc surface (33) are arranged to be inclined downward.

5. The integrated combination valve according to claim 3, characterized in that: An annular sealing surface is provided on one side of the valve cover (15) close to the first valve port (30); the inner diameter of the annular sealing surface is smaller than the inner diameter of the first valve port (30), and the outer diameter of the annular sealing surface is larger than the outer diameter of the first valve port (30), so that the annular sealing surface can cover the sealing surface of the first valve port (30).

6. The integrated combination valve according to claim 3, characterized in that: The valve cover (15) comprises: A sealing body (152) for sealing the first valve port (30); A pressure cover (151) is pressed on the upper part of the sealing body (152); When the valve cover (15) closes the first valve port (30), the sealing body (152) is pressed between the pressure cover (151) and the first valve port (30) and fits against the sealing surface of the first valve port (30).

7. The integrated combination valve according to claim 1, characterized in that: The solenoid valve (10) is provided with a manual pull rod (16), and the solenoid valve (10) can be manually opened by the manual pull rod (16).

8. The integrated combination valve according to claim 7, characterized in that: The integrated combination valve (100) further comprises: A pull rod cover (17) is detachably arranged above the solenoid valve (10), and has an accommodating cavity for accommodating a manual pull rod (16) therein; Wherein, the manual pull rod (16) is arranged in the accommodating cavity; when the manual pull rod (16) is pulled, the pull rod cover (17) needs to be removed first.

9. The integrated combination valve according to claim 1, characterized in that: The integrated combination valve (100) further comprises: A user connector (40) is sleeved on the user end (101) of the solenoid valve (10); The user connector (40) is provided with an internal thread matching the user pipeline, and the solenoid valve (10) is connected to the user pipeline via the user connector (40).

10. The integrated combination valve according to claim 9, characterized in that: The user connector (40) is connected to the solenoid valve (10) via a clamping spring (51).

11. The integrated combination valve according to claim 10, characterized in that: The integrated combination valve (100) further comprises: At least one sealing ring (52) is arranged at the connection between the user connector (40) and the user end (101).

12. A gas water heater, characterized in that: The gas water heater comprises: The water heater body is provided with a fault detection module; The integrated combination valve (100) according to any one of claims 1 to 11, connected to a gas input pipeline of the water heater body through the user end (101); The integrated combination valve (100) is electrically connected to the water heater body, and when the fault detection module detects that the water heater body has a fault, the water heater body can control the integrated combination valve (100) to close.

13. The gas water heater according to claim 12, characterized in that: The gas water heater also includes: A combination valve controller electrically connects the fault detection module and the integrated combination valve (100).

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