Gas regulating device for gas water heater and gas water heater having the same

Abstract

The present invention discloses a gas regulating device of a gas water heater and a gas water heater having the same. The gas regulating device of the gas water heater comprises: an air-fuel mixing part, the air-fuel mixing part comprises a mixing cavity and a gas cavity extending from the mixing cavity, an air inlet and a mixed gas outlet are formed on the mixing cavity, an air hole is formed at the connection between the mixing cavity and the gas cavity, and the air hole communicates with the internal space of the mixing cavity and the internal space of the gas cavity; an on-off valve, the on-off valve has an open state and a closed state, the on-off valve avoids the air hole when in the open state, and at least blocks a part of the air hole when in the closed state; a controller, the controller is electrically connected to the on-off valve to control the on-off valve to switch between the open state and the closed state. The gas regulating device of the gas water heater according to the embodiment of the present invention has the advantages of small occupied space and good regulating effect.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliance manufacturing, and in particular to a gas regulating device of a gas water heater and a gas water heater having the gas regulating device of the gas water heater. Background Art

[0002] The gas water heater in the related technology uses the heat generated by the combustion of a mixture of gas and air to prepare hot water. The gas water heater adjusts the gas intake volume through a gas proportional valve. Since the gas intake pressure is prone to fluctuations, it is easy to affect the accuracy of the gas proportional valve in regulating the gas, which can easily cause unstable combustion of the mixture of gas and air, resulting in a large temperature difference in the hot water outlet, affecting the working performance of the gas water heater and the user's comfort. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a gas regulating device for a gas water heater, which has the advantages of small occupied space and good regulating effect.

[0004] The present invention also provides a gas water heater having the gas regulating device of the gas water heater.

[0005] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the present invention, a gas regulating device of a gas water heater is proposed, the gas regulating device of the gas water heater comprising: an air-fuel mixing section, the air-fuel mixing section comprising a mixing cavity and a gas cavity extending from the mixing cavity, the mixing cavity being provided with an air inlet and a mixed gas outlet, an air hole being formed at the connection between the mixing cavity and the gas cavity, the air hole being connected to the internal space of the mixing cavity and the internal space of the gas cavity; an on-off valve, the on-off valve having an open state and a closed state, the on-off valve avoiding the air hole in the open state, and at least blocking a part of the air hole in the closed state; and a controller, the controller being electrically connected to the on-off valve to control the on-off valve to switch between the open state and the closed state.

[0006] The gas regulating device of the gas water heater according to the embodiment of the present invention has the advantages of small occupied space and good regulating effect.

[0007] In addition, the gas regulating device of the gas water heater according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to some embodiments of the present invention, the air hole includes a first air hole and a second air hole, the first air hole and the second air hole are arranged at an interval, the on-off valve avoids the first air hole in the open state, and the on-off valve blocks the first air hole in the closed state.

[0009] According to some embodiments of the present invention, the first air hole is located at the center, and the second air holes are multiple and are arranged at intervals along the circumference of the first air hole.

[0010] According to some embodiments of the present invention, the distance between each of the second air holes and the first air hole is equal, and the plurality of second air holes are arranged at equal intervals along the circumference of the first air hole.

[0011] According to some embodiments of the present invention, the first air hole is surrounded by a surrounding plate, and the on-off valve is suitable for abutting against the surrounding plate to close the first air hole.

[0012] According to some embodiments of the present invention, the gas cavity further has an installation opening, at least a portion of the on-off valve extends into the gas cavity through the installation opening, a mounting seat is provided at the installation opening, and the on-off valve is mounted on the mounting seat.

[0013] According to some embodiments of the present invention, the air inlet is located at one end of the mixing chamber, and the mixed air outlet is located at the other end of the mixing chamber.

[0014] According to some embodiments of the present invention, the gas regulating device of the gas water heater also includes a sleeve, one end of the sleeve is installed at the air inlet and is tightly attached to the inner wall of the air inlet, the other end of the sleeve extends into the mixing chamber, and the outer peripheral surface of the sleeve is spaced apart from the air hole.

[0015] According to some embodiments of the present invention, the other end of the sleeve extends into the mixing chamber and the sleeve spans the air hole.

[0016] According to some embodiments of the present invention, the upper end of the sleeve has a positioning ring platform, the air inlet has a positioning ring groove, and the positioning ring platform is suitable for fitting in the positioning ring groove.

[0017] According to an embodiment of a second aspect of the present invention, a gas water heater is provided. The gas water heater comprises the gas regulating device of the gas water heater according to the embodiment of the first aspect of the present invention.

[0018] According to some embodiments of the present invention, the gas water heater also includes: a shell; a fan assembly, the fan assembly is arranged in the shell; a proportional valve, the proportional valve is arranged in the shell, the proportional valve is connected to the gas inlet and the gas source respectively; a detection device for detecting the outlet water temperature, the detection device is arranged in the shell.

[0019] According to some embodiments of the present invention, the fan assembly includes: a casing; a cover plate, the cover plate and the casing define a accommodating cavity, the gas regulating device is arranged on the cover plate; and a fan, the fan is arranged in the accommodating cavity.

[0020] According to the gas water heater of the embodiment of the present invention, by utilizing the gas regulating device of the gas water heater according to the embodiment of the first aspect of the present invention, the gas regulating device has the advantages of small occupied space and good regulating effect.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 Schematic diagram of the structure of a gas regulating device for a gas water heater according to an embodiment of the present invention.

[0024] Figure 2 is an exploded view of a gas regulating device for a gas water heater according to an embodiment of the present invention.

[0025] Figure 3 is an exploded view of a gas regulating device for a gas water heater according to an embodiment of the present invention.

[0026] Figure 4 Schematic diagram of the structure of a gas regulating device for a gas water heater according to an embodiment of the present invention.

[0027] Figure 5 Schematic diagram of the structure of a gas regulating device for a gas water heater according to an embodiment of the present invention.

[0028] Figure 6 is a cross-sectional view of a gas regulating device for a gas water heater according to an embodiment of the present invention.

[0029] Figure 7 is a cross-sectional view of a gas regulating device for a gas water heater according to an embodiment of the present invention.

[0030] Figure 8is a cross-sectional view of a gas regulating device for a gas water heater according to an embodiment of the present invention.

[0031] Fig. 9 is a cross-sectional view of a gas regulating device for a gas water heater according to another embodiment of the present invention.

[0032] Fig.10 is a cross-sectional view of a gas regulating device for a gas water heater according to another embodiment of the present invention.

[0033] Figure numerals: gas regulating device 1, air-fuel mixing part 100, mixing chamber 110, air inlet 111, mixed gas outlet 112, positioning ring groove 113, gas chamber 120, mounting port 121, mounting seat 122, pressure measuring hole 123, gas inlet 125, first air hole 131, second air hole 132, enclosure 140, on-off valve 200, seal 210, sleeve 300, positioning ring platform 310, cover plate 2. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] The following describes a gas regulating device 1 for a gas water heater according to an embodiment of the present invention with reference to the accompanying drawings.

[0036] like Figure 1-Figure 10 As shown, the gas regulating device 1 of the gas water heater according to the embodiment of the present invention includes an air-fuel mixing part 100, an on-off valve 200 and a controller.

[0037] The air-fuel mixing unit 100 includes a mixing chamber 110 and a gas chamber 120 extending from the mixing chamber 110. The mixing chamber 110 is formed with an air inlet 111 and a mixed gas outlet 112. An air hole is formed at the connection between the mixing chamber 110 and the gas chamber 120. The air hole communicates with the internal space of the mixing chamber 110 and the internal space of the gas chamber 120. The on-off valve 200 has an open state and a closed state. The on-off valve 200 avoids the air hole in the open state, and at least blocks a part of the air hole in the closed state. The controller is electrically connected to the on-off valve 200 to control the on-off valve 200 to switch between the open state and the closed state.

[0038] According to the gas regulating device 1 of the gas water heater of the embodiment of the present invention, by setting the air-fuel mixing part 100, the on-off valve 200 and the controller, the controller can be used to control the working state of the on-off valve 200, so that the on-off valve 200 is switched between the open state and the closed state, so that the on-off valve 200 avoids the air hole or at least blocks a part of the air hole.

[0039] In this way, the flow area of ​​the gas between the mixing chamber 110 and the gas chamber 120 can be controlled according to specific needs. For example, when the gas pressure is relatively high, the on-off valve 200 can be used to avoid the gas hole, so that there is a larger flow area between the mixing chamber 110 and the gas chamber 120, so as to reduce the pressure of the gas flowing through the gas regulating device 1. When the gas pressure is relatively low, the on-off valve 200 can be used to block a part of the gas hole, so that there is a smaller flow area between the mixing chamber 110 and the gas chamber 120, so as to increase the pressure of the gas flowing through the gas regulating device 1.

[0040] Therefore, the gas regulating device 1 can be used to regulate the pressure of the gas flowing through the gas regulating device 1, so that the pressure of the gas flowing through the gas regulating device 1 can be controlled within a certain pressure range, avoiding the pressure of the gas flowing through the gas regulating device 1 being too small or too large, and facilitating the gas water heater to regulate the gas intake amount. For example, the gas water heater uses a proportional valve to regulate the gas intake amount, but the proportional valve needs to be within a certain gas pressure range to achieve better regulation performance. This makes it easy for the proportional valve to be within a suitable gas pressure regulation range, so that the proportional valve can accurately regulate the gas intake amount, improve the regulation accuracy of the proportional valve for the gas intake amount, improve the gas intake stability and reliability, and enable the gas and air to reach a suitable proportional relationship, so that the mixed gas of gas and air can be fully burned, and the combustion efficiency of the mixed gas can be improved. This can not only improve the preparation efficiency of hot water, improve the water output stability of hot water, and improve the user's comfort, but also reduce the emission of harmful gases in the exhaust gas, and improve the environmental protection performance of the gas water heater.

[0041] Furthermore, by providing the air-fuel mixing section 100, the on-off valve 200 and the controller, the on-off valve 200 is used to control the size of the flow area between the mixing chamber 110 and the gas chamber 120. Compared with the method of using a gas distribution rod to adjust the gas pressure in the related art, the overall size of the gas regulating device 1 is smaller, so that the installation space occupied by the gas regulating device 1 is smaller, and there is no need to reserve sufficient installation space for the gas regulating device 1, which can facilitate the installation of the gas regulating device 1, make the structure of the gas water heater more reasonable and compact, and improve the space utilization inside the gas water heater, thereby facilitating the control of the volume of the gas water heater and reducing the occupied space of the gas water heater.

[0042] In addition, compared with the method of using a venturi tube to achieve air and gas mixing in the related art, since the venturi tube is difficult to achieve stable gas regulation when the gas pressure is high or low, it is easy to cause the combustion of the mixed gas of gas and air to be unstable, resulting in a large deviation in the outlet temperature of hot water, and the venturi tube has a complex structure, is difficult to process, and takes a long time to assemble. In this way, the gas regulating device 1 can not only make the gas intake and the air intake have an accurate proportional relationship, improve the stability and reliability of the combustion of the mixed gas of gas and air, and improve the working reliability of the gas water heater, but also facilitate the production of the gas water heater, improve the production efficiency of the gas water heater, and reduce the production cost of the gas water heater.

[0043] Therefore, the gas regulating device 1 of the gas water heater according to the embodiment of the present invention has the advantages of small occupied space and good regulating effect.

[0044] The following describes a gas regulating device 1 for a gas water heater according to a specific embodiment of the present invention with reference to the accompanying drawings.

[0045] In some specific embodiments of the present invention, Figure 1-Figure 10 As shown, the gas regulating device 1 of the gas water heater according to the embodiment of the present invention includes an air-fuel mixing part 100, an on-off valve 200 and a controller.

[0046] Specifically, Figure 6 As shown, one end of the gas chamber 120 has a gas inlet 125, and the gas inlet 125 is connected to the gas source of the gas, so that the gas can flow smoothly into the gas regulating device 1, and the gas regulating device 1 can be used to regulate the pressure of the gas in the gas regulating device 1.

[0047] According to some embodiments of the present invention, Figure 4 As shown, the air hole includes a first air hole 131 and a second air hole 132, the first air hole 131 and the second air hole 132 are arranged at intervals, the on-off valve 200 avoids the first air hole 131 when in the open state, and blocks the first air hole 131 when in the closed state. This not only facilitates the smooth introduction of gas into the gas regulating device 1 to ensure the normal operation of the gas water heater, but also the on-off valve 200 can be used to avoid or block the first air hole 131 to adjust the gas flow area at the air hole, which is convenient for adjusting the pressure of the gas in the gas regulating device 1, and improving the working reliability and stability of the gas water heater.

[0048] Specifically, the connection between the gas chamber 120 and the mixing chamber 110 is separated by the peripheral wall of the mixing chamber 110, and the first air hole 131 and the second air hole 132 are respectively formed on the peripheral wall. This not only facilitates the formation of the first air hole 131 and the second air hole 132, but also facilitates the improvement of the processing efficiency of the first air hole 131 and the second air hole 132, and also facilitates the on-off valve 200 to control the opening and closing of the first air hole 131.

[0049] Alternatively, if Figure 4 As shown, the first air hole 131 is located in the center, and the second air holes 132 are multiple and arranged at intervals along the circumference of the first air hole 131. This makes it easier for the on-off valve 200 to open or block the first air hole 131, and for the gas regulating device 1 to regulate the pressure of the gas in the gas regulating device 1, thereby improving the regulating effect of the gas water heater on the gas intake amount.

[0050] Specifically, the distance between each second air hole 132 and the first air hole 131 is equal, and the plurality of second air holes 132 are arranged at equal intervals along the circumference of the first air hole 131. In this way, the distribution of the second air holes 132 can be more uniform, so that the gas flow is more uniform when the gas flows from the gas cavity 120 into the mixing cavity 110, which facilitates making the force of the gas regulating device 1 more uniform and improving the structural stability of the gas regulating device 1.

[0051] According to other embodiments of the present invention, the air hole includes a first air hole 131 and a second air hole 132, the first air hole 131 and the second air hole 132 are arranged at intervals, the on-off valve 200 avoids the first air hole 131 and the second air hole 132 in the open state, and the on-off valve 200 blocks a part of the first air hole 131 and the second air hole 132 in the closed state. In this way, the on-off valve 200 can be used to avoid or block a part of the first air hole 131 and the second air hole 132 to adjust the gas flow area at the air hole, improve the gas regulating effect of the gas regulating device 1 on the gas pressure in the gas regulating device 1, and improve the pressure regulating performance of the gas regulating device 1.

[0052] Alternatively, if Figure 6 As shown, the first air hole 131 is surrounded by a surrounding plate 140, and the on-off valve 200 is suitable for stopping on the surrounding plate 140 to close the first air hole 131. In this way, the on-off valve 200 can open and close the first air hole 131 by avoiding or blocking the surrounding plate 140, which not only facilitates the on-off valve 200 to adjust the same flow area of ​​the air hole, but also facilitates improving the sealing effect of the on-off valve 200 on the first air hole 131, and further improves the working reliability of the gas regulating device 1.

[0053] Further, one end of the enclosing plate 140 is connected to the outer peripheral wall of the mixing chamber 110, and the other end extends in a direction away from the outer peripheral wall. Further, the enclosing plate 140 and the mixing chamber 110 are integrally formed. This facilitates the arrangement of the enclosing plate 140, and further facilitates the on-off valve 200 to seal the first air hole 131.

[0054] Specifically, Figure 3 As shown, the gas cavity 120 also has a mounting port 121, at least a portion of the on-off valve 200 extends into the gas cavity 120 through the mounting port 121, a mounting seat 122 is provided at the mounting port 121, and the on-off valve 200 is mounted on the mounting seat 122. This facilitates the installation of the on-off valve 200, and further facilitates the use of the on-off valve 200 to adjust the flow area at the air hole, thereby improving the gas regulating effect of the gas regulating device 1 on the gas pressure in the gas regulating device 1.

[0055] More specifically, the mounting seat 122 is integrally formed with the gas chamber 120. This facilitates simplifying the assembly process of the gas regulating device 1 and improving the production efficiency of the gas regulating device 1.

[0056] Furthermore, the installation opening 121 is arranged opposite to the air hole, so that the air hole can be opened or blocked by the on-off valve 200, thereby improving the reliability of the on-off valve 200 in regulating the flow area of ​​the air hole.

[0057] Alternatively, if Figure 4 As shown, the gas cavity 120 also has a pressure measuring hole 123, so as to measure the gas pressure of the gas in the gas cavity 120 through the pressure measuring hole 123. In this way, the gas pressure of the gas in the gas cavity 120 can be measured by using the pressure measuring hole 123, so as to accurately determine the gas pressure of the gas in the gas cavity 120, and further facilitate the adjustment of the flow area of ​​the gas hole.

[0058] Specifically, Figure 6 As shown, the air inlet 111 is located at one end of the mixing cavity 110, and the mixed gas outlet 112 is located at the other end of the mixing cavity 110. This not only facilitates the processing and formation of the air inlet 111 and the mixed gas outlet 112, and facilitates the formation of a mixed gas by air and gas in the mixing cavity 110, but also facilitates the mixed gas of air and gas to flow out through the mixed gas outlet 112, and further facilitates the improvement of the working performance of the gas regulating device 1.

[0059] More specifically, Figure 2As shown, the gas regulating device 1 further includes a sleeve 300, one end of which is installed at the air inlet 111 and is in close contact with the inner wall of the air inlet 111, and the other end of the sleeve 300 extends into the mixing cavity 110, and the outer peripheral surface of the sleeve 300 is spaced apart from the air hole. In this way, the sleeve 300 can not only be used to guide the flow of air and gas, so that the air and gas form a mixed gas in the mixing cavity 110, and the mixed gas flows out smoothly from the mixed gas outlet 112, but also the sleeve 300 can be prevented from blocking the air hole, so that the gas flows smoothly into the mixing cavity 110 through the air hole, and the setting of the sleeve 300 can be prevented from affecting the normal flow of the gas.

[0060] Furthermore, if Figure 7 As shown, the other end of the sleeve 300 extends into the mixing chamber 110 and the sleeve 300 spans the air hole. This not only facilitates the smooth inflow of gas, but also prevents the gas from flowing out through the air inlet 111, avoids gas leakage, and further improves the working reliability of the gas regulating device 1.

[0061] Optionally, in the length direction of the mixing cavity 110, the air hole is located between the air inlet 111 and the mixed gas outlet 112. This not only facilitates the mixing of air and gas in the mixing cavity 110, but also facilitates the smooth outflow of the mixed gas from the mixed gas outlet 112. It also facilitates the arrangement of the air hole, the air inlet 111 and the mixed gas outlet 112, avoids mutual interference between the air hole, the air inlet 111 and the mixed gas outlet 112, and further facilitates the smooth operation of the gas regulating device 1.

[0062] Specifically, Figure 7 As shown, one of the sleeve 300 and the mixing chamber 110 has a positioning ring stage 310, and the other has a positioning ring groove 113, and the positioning ring stage 310 is suitable for fitting in the positioning ring groove 113. In this way, not only can the positioning ring stage 310 and the positioning ring groove 113 be used to position the installation of the sleeve 300, which is convenient for the smooth installation of the sleeve 300 and improves the assembly efficiency of the sleeve 300, but also it is convenient to seal the connection between the sleeve 300 and the mixing chamber 110, and improve the sealing effect between the sleeve 300 and the mixing chamber 110.

[0063] More specifically, Figure 7As shown, the upper end of the sleeve 300 has a positioning ring 310, and the air inlet 111 has a positioning ring groove 113, and the positioning ring 310 is suitable for fitting in the positioning ring groove 113. This not only facilitates the smooth installation of the sleeve 300 on the mixing chamber 110, further improving the assembly effect of the gas regulating device 1, but also further facilitates the sealing of the connection between the sleeve 300 and the mixing chamber 110, improves the sealing reliability between the sleeve 300 and the mixing chamber 110, avoids the leakage of gas, and further improves the working reliability of the gas regulating device 1.

[0064] Optionally, the on-off valve 200 is a solenoid valve. In this way, the on-off valve 200 can be electrically controlled, which is not only convenient for controlling the opening and closing of the first air hole 131 through the on-off valve 200, but also improves the control reliability and stability of the on-off valve 200. In addition, due to the fast response speed of the solenoid valve, it is convenient to improve the sensitivity and accuracy of the controller to control the on-off valve 200, further facilitate the on-off valve 200 to control the opening and closing of the first air hole 131, and improve the reliability of the function switching of the gas regulating device 1.

[0065] Specifically, Figure 7 As shown, the on-off valve 200 includes a sealing member 210, so that the sealing member 210 can be used to block the first air hole 131, thereby improving the sealing effect of the on-off valve 200 on the first air hole 131. At the same time, when the on-off valve 200 is in the closed state, the sealing member 210 is in a state of being squeezed by the gas, which is beneficial to improving the sealing effect of the sealing member 210.

[0066] According to a specific embodiment of the present invention, the gas regulating device 1 includes an air-fuel mixing part 100, an on-off valve 200 and the controller. The air-fuel mixing part 100 includes a mixing cavity 110 and a gas cavity 120 extending from the mixing cavity 110. The mixing cavity 110 is formed with an air inlet 111 and a mixed gas outlet 112. An air hole is formed at the connection between the mixing cavity 110 and the gas cavity 120. The air hole communicates with the internal space of the mixing cavity 110 and the internal space of the gas cavity 120. The on-off valve 200 has an open state and a closed state. The on-off valve 200 avoids the air hole in the open state, and the on-off valve 200 at least blocks a part of the air hole in the closed state. The controller is electrically connected to the on-off valve 200 to control the on-off valve 200 to switch between the open state and the closed state.

[0067] One end of the gas cavity 120 has a gas inlet 125, and the gas inlet 125 is connected to the gas source of the gas. The gas holes include a first gas hole 131 and a second gas hole 132, and the first gas hole 131 and the second gas hole 132 are arranged at intervals. The on-off valve 200 avoids the first gas hole 131 when in the open state, and the on-off valve 200 blocks the first gas hole 131 when in the closed state. The connection between the gas cavity 120 and the mixing cavity 110 is separated by the peripheral wall of the gas cavity 120, and the first gas hole 131 and the second gas hole 132 are respectively formed on the peripheral wall. The first gas hole 131 is located in the center, and the second gas hole 132 is multiple and is arranged at intervals along the circumference of the first gas hole 131. The distance between each second gas hole 132 and the first gas hole 131 is equal, and the multiple second gas holes 132 are arranged at equal intervals along the circumference of the first gas hole 131.

[0068] The first air hole 131 is surrounded by a surrounding plate 140, and the on-off valve 200 is suitable for stopping on the surrounding plate 140 to close the first air hole 131. One end of the surrounding plate 140 is connected to the outer peripheral wall of the mixing chamber 110, and the other end extends in a direction away from the outer peripheral wall. The surrounding plate 140 and the mixing chamber 110 are integrally formed.

[0069] The gas cavity 120 also has a mounting opening 121, through which at least a portion of the on-off valve 200 extends into the gas cavity 120, and a mounting seat 122 is provided at the mounting opening 121, on which the on-off valve 200 is mounted. The mounting seat 122 is integrally formed with the gas cavity 120. The mounting opening 121 is arranged opposite to the air hole.

[0070] The gas chamber 120 also has a pressure measuring hole 123, so as to measure the gas pressure of the gas in the gas chamber 120 through the pressure measuring hole 123. The air inlet 111 is located at one end of the mixing chamber 110, and the mixed gas outlet 112 is located at the other end of the mixing chamber 110. The gas regulating device 1 also includes a sleeve 300, one end of which is installed at the air inlet 111 and is tightly attached to the inner wall of the air inlet 111, and the other end of the sleeve 300 extends into the mixing chamber 110, and the outer peripheral surface of the sleeve 300 is spaced from the air hole. The other end of the sleeve 300 extends into the mixing chamber 110 and the sleeve 300 spans the air hole. In the length direction of the mixing chamber 110, the air hole is located between the air inlet 111 and the mixed gas outlet 112. The upper end of the sleeve 300 has a positioning ring stage 310, and the air inlet 111 has a positioning ring groove 113, and the positioning ring stage 310 is suitable for fitting in the positioning ring groove 113. The on-off valve 200 is a solenoid valve and includes a sealing member 210 .

[0071] The following describes a gas water heater according to an embodiment of the present invention. The gas water heater according to an embodiment of the present invention comprises a gas regulating device 1 of the gas water heater according to the above embodiment of the present invention.

[0072] Specifically, the gas water heater further includes: a housing; a fan assembly, the fan assembly being arranged in the housing; a proportional valve, the proportional valve being arranged in the housing, the proportional valve being connected to the gas inlet and the gas source respectively; and a detection device for detecting the outlet water temperature, the detection device being arranged in the housing. This facilitates the reliable input of air and gas, facilitates the control of the air intake and the gas intake respectively, and facilitates the air and gas to have a suitable ratio range, which not only facilitates the full combustion of gas, improves the combustion efficiency of gas, and improves the efficiency of the gas water heater in preparing hot water, but also facilitates the reduction of harmful substances in the tail gas, facilitates the protection of the natural environment, and improves the environmental protection performance of the gas water heater. At the same time, it is convenient to determine the proportional relationship between air and gas according to the detection value of the detection device, and further improves the working reliability of the gas water heater.

[0073] More specifically, the fan assembly includes: a housing; a cover plate 2, the cover plate 2 and the housing define a receiving cavity, the gas regulating device 1 is arranged on the cover plate 2; and a fan, the fan is arranged in the receiving cavity. This not only facilitates the installation of the gas regulating device 1, reduces the installation space required for the gas regulating device 1, improves the compactness and rationality of the structure of the gas water heater, but also facilitates the mixed gas of air and gas to be sent into the receiving cavity for full mixing.

[0074] According to an embodiment of the present invention, the gas regulating device 1 is integrally formed with the cover plate 2. This not only simplifies the structure of the gas water heater, simplifies the assembly process of the gas water heater, and improves the production efficiency of the gas water heater, but also improves the structural strength of the gas regulating device 1, improves the setting stability and reliability of the gas regulating device 1, and improves the sealing performance of the gas regulating device 1.

[0075] According to another embodiment of the present invention, the cover plate 2 is provided with a mounting flange, and the gas regulating device 1 is mounted on the mounting flange through a threaded connector. This not only facilitates the installation of the gas regulating device 1, but also allows the gas regulating device 1 to be firmly mounted on the cover plate 2, thereby ensuring the reliability and stability of the fixed connection between the gas regulating device 1 and the cover plate 2. At the same time, when a failure occurs in the gas regulating device 1, it can be quickly replaced and repaired, thereby reducing the maintenance cost of the gas regulating device 1.

[0076] Specifically, the controller is electrically connected to the on-off valve 200, the proportional valve and the detection device, respectively, to control the ventilation volume of the proportional valve and the on-off of the on-off valve 200 according to the detection value of the detection device. This further facilitates the use of the controller to control the intake volume of the gas and improves the intake stability of the gas.

[0077] According to the gas water heater of the embodiment of the present invention, by utilizing the gas regulating device 1 of the gas water heater according to the above embodiment of the present invention, the gas regulating device 1 has the advantages of small occupied space and good regulating effect.

[0078] Other structures and operations of the gas water heater according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0079] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0080] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0081] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gas regulating device for a gas water heater, characterized in that: include: An air-fuel mixing part, the air-fuel mixing part comprises a mixing cavity and a gas cavity extending from the mixing cavity, the mixing cavity is formed with an air inlet and a mixed gas outlet, an air hole is formed at the connection between the mixing cavity and the gas cavity, and the air hole communicates with the internal space of the mixing cavity and the internal space of the gas cavity; an on-off valve, the on-off valve having an open state and a closed state, the on-off valve avoiding the air hole in the open state, and the on-off valve at least blocking a part of the air hole in the closed state; A controller, wherein the controller is electrically connected to the on-off valve to control the on-off valve to switch between the open state and the closed state; the gas chamber also has a mounting port, at least a portion of the on-off valve extends into the gas chamber through the mounting port, a mounting seat is provided at the mounting port, and the on-off valve is mounted on the mounting seat; the air hole comprises a first air hole and a second air hole, the first air hole and the second air hole are arranged at intervals, the on-off valve avoids the first air hole in the open state, and the on-off valve blocks the first air hole in the closed state; the first air hole is located in the center, and the second air hole is multiple and is arranged at intervals along the circumference of the first air hole; the first air hole is surrounded by a surrounding plate in the circumference, and the on-off valve is suitable for stopping on the surrounding plate to close the first air hole.

2. The gas regulating device for a gas water heater according to claim 1, characterized in that: The distance between each of the second air holes and the first air hole is equal, and the plurality of second air holes are arranged at equal intervals along the circumference of the first air hole.

3. The gas regulating device for a gas water heater according to claim 1, characterized in that: The air inlet is located at one end of the mixing cavity, and the mixed gas outlet is located at the other end of the mixing cavity.

4. The gas regulating device for a gas water heater according to claim 1, characterized in that: It also includes a sleeve, one end of which is installed at the air inlet and closely attached to the inner wall of the air inlet, the other end of which extends into the mixing cavity, and the outer peripheral surface of the sleeve is spaced apart from the air hole.

5. The gas regulating device for a gas water heater according to claim 4, characterized in that: The other end of the sleeve extends into the mixing chamber and the sleeve spans the air hole.

6. The gas regulating device for a gas water heater according to claim 4, characterized in that: The upper end of the sleeve is provided with a positioning ring platform, the air inlet is provided with a positioning ring groove, and the positioning ring platform is suitable for fitting in the positioning ring groove.

7. A gas water heater, characterized in that: It comprises a gas regulating device for a gas water heater according to any one of claims 1-6.

8. The gas water heater according to claim 7, characterized in that: The gas water heater also includes: case; A fan assembly, wherein the fan assembly is arranged in the housing; A proportional valve, the proportional valve is arranged in the housing, and the proportional valve is connected to the gas inlet and the gas source respectively; A detection device for detecting the outlet water temperature is arranged in the housing.

9. The gas water heater according to claim 8, characterized in that: The fan assembly comprises: chassis; A cover plate, wherein the cover plate and the casing define a receiving cavity, and the gas regulating device is arranged on the cover plate; A fan is arranged in the accommodating chamber.

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