Gas water heating device

Abstract

The utility model discloses a gas water heating device which comprises a burner, a fan, a gas electronic proportion adjusting device and a gas supply pipeline. After the fan is started, fuel gas can flow in from the fuel gas electronic proportion adjusting device and flow out from the gas supply pipeline, and the fuel gas is mixed with air and then combusted in the combustor. The fuel gas water heating device comprises a detection device used for detecting the flow and / or pressure of fuel gas and adjusting the opening degree of the fuel gas electronic proportion adjusting device according to the detection result. The fuel gas water heating device further comprises a flow stabilizing structure, the flow stabilizing structure is provided with a flow stabilizing structure inlet, a flow stabilizing channel and a flow stabilizing structure outlet, the flow stabilizing structure inlet is used for enabling part of fuel gas flowing through the gas supply pipeline to flow into the flow stabilizing channel, and the flow stabilizing channel is used for stabilizing flow of the fuel gas. And the detection part is used for detecting the flow and / or pressure of the gas flowing out of the outlet of the flow stabilizing structure. According to the invention, the accuracy of fuel gas (flow and / or pressure) detection can be improved, so that the precision of fuel gas adjustment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas combustion devices, in particular to a gas water heater. Background Art

[0002] The existing gas combustion device mainly includes: a fan, a gas electronic ratio control device, a burner, a combustion chamber, a heat exchanger and other components. Among them, the gas electronic ratio control device is used to control the supply amount of the gas mixed with the air sucked by the fan, and is one of the core components of the gas combustion device.

[0003] During the operation of the gas combustion device, the opening adjustment of the gas electronic proportional control device is very important, as it determines the gas flow rate supplied to the burner during combustion. Once the opening adjustment of the gas electronic proportional control device is inaccurate, the working performance of the gas combustion device may be reduced; or there may be problems such as explosion at startup or inability to start the device.

[0004] Therefore, it is necessary to propose a gas water heater to solve the above problems. Utility Model Content

[0005] In view of the defects existing in the prior art, a gas water heater is provided in the embodiment of the utility model, which can improve the accuracy of gas (flow and / or pressure) detection, thereby improving the accuracy of gas regulation.

[0006] The specific technical solution of the implementation mode of the utility model is:

[0007] A gas water heater, comprising: a burner, a fan, a gas electronic ratio regulating device and a gas supply pipeline connected to the outlet of the gas electronic ratio regulating device; after the fan is started, gas can flow into the gas electronic ratio regulating device and flow out of the gas supply pipeline, and the gas flowing out of the gas supply pipeline can be mixed with air and then burned in the burner; the gas water heater also includes a detection device, which is used to detect the flow rate and / or pressure of the gas and adjust the opening of the gas electronic ratio regulating device according to the detection result; the gas water heater also includes a flow stabilizing structure, which has a flow stabilizing structure inlet, a flow stabilizing channel and a flow stabilizing structure outlet, the flow stabilizing structure inlet is used to make part of the gas flowing through the gas supply pipeline flow into the flow stabilizing channel, the flow stabilizing channel is used to stabilize the flow of the gas, and the detection device includes a detection unit, which is used to detect the flow rate and / or pressure of the gas flowing out of the flow stabilizing structure outlet.

[0008] In a preferred embodiment, the inlet of the detection device is located downstream of the outlet of the flow stabilizing structure, and part of the gas flowing through the gas supply pipeline can flow in from the inlet of the flow stabilizing structure, flow through the flow stabilizing channel and flow out from the outlet of the flow stabilizing structure, and then flow into the inlet of the detection device.

[0009] In a preferred embodiment, the inlet of the detection device is arranged on the air supply pipeline.

[0010] In a preferred embodiment, the flow stabilizing structure has a flow stabilizing structure body, the flow stabilizing structure body is located in the air supply pipeline, there is a predetermined distance between the outer surface of the flow stabilizing structure body and a part of the inner surface of the air supply pipeline to form the flow stabilizing channel, and the flow stabilizing structure inlet is arranged through the flow stabilizing structure body.

[0011] In a preferred embodiment, the gas supply pipeline has a connecting portion, which is used to be connected to the outlet of the gas electronic proportion adjustment device. The inlet of the detection device is arranged on the connecting portion, and the connecting portion has a connecting port that is connected to the inlet of the detection device. The flow stabilizing structure body is located in the connecting portion, and there is a predetermined distance between the outer surface of the flow stabilizing structure body and a part of the inner surface of the connecting portion to form the flow stabilizing channel.

[0012] In a preferred embodiment, the connecting portion includes a connecting flange, and the flow stabilizing channel is annular as a whole.

[0013] In a preferred embodiment, one side of the flow stabilizing structure body abuts against the end face of the outlet of the gas electronic proportion regulating device, a limiting portion is provided inside the connecting portion, and the other side of the flow stabilizing structure body abuts against the limiting portion.

[0014] In a preferred embodiment, the gas water heater further comprises a seal, which is used to seal the gap between the flow stabilizing structure body and the connecting portion, and the seal is arranged between the connecting portion and the outlet of the gas electronic ratio regulating device.

[0015] In a preferred embodiment, the gas water heater further comprises: a controller, wherein the controller is communicatively connected with the fan and the detection device, and the gas electronic ratio adjustment device is communicatively connected with the detection device.

[0016] In a preferred embodiment, the detection part of the detection device is arranged on the computer board of the gas electronic proportion regulating device, the gas flowing into the inlet of the detection device is guided to the detection part through a hose, and the controller is communicatively connected with the detection part on the computer board of the gas electronic proportion regulating device.

[0017] In a preferred embodiment, the flow stabilizing structure body is detachably embedded in the air supply pipeline.

[0018] In a preferred embodiment, a gas guide groove is formed on the outer surface of the flow stabilizing structure body and / or a portion of the inner surface of the gas supply pipeline.

[0019] In a preferred embodiment, a blocking portion is provided in the gas guide groove, and the blocking portion is used to change the flow direction of the gas.

[0020] In a preferred embodiment, the edge of the gas guide groove is changed to form an arc-shaped guide portion and / or a broken line guide portion.

[0021] In a preferred embodiment, the number of the flow stabilizing structure inlets is multiple, and the multiple flow stabilizing structure inlets are multiple openings arranged at intervals.

[0022] In a preferred embodiment, the opening area of ​​the inlet of the flow stabilizing structure is smaller than the opening area of ​​the outlet of the flow stabilizing structure.

[0023] In a preferred embodiment, at least some of the openings of the inlet of the flow stabilizing structure are arranged at different heights.

[0024] In a preferred embodiment, in the height direction, the opening area of ​​the inlet of the flow stabilizing structure that is at least partially in a lower position is smaller than the opening area of ​​the inlet of the flow stabilizing structure that is at least partially in a higher position, or the opening area of ​​the inlet of the flow stabilizing structure gradually decreases from top to bottom.

[0025] In a preferred embodiment, the steady flow channel includes at least two sub-steady flow channels in parallel, and part of the gas can flow in from the inlet of the steady flow structure, flow steadily through the at least two sub-steady flow channels in parallel, and flow out from the outlet of the steady flow structure to be detected by the detection part of the detection device.

[0026] In a preferred embodiment, the flow stabilizing structure is provided in the detection device, and the flow stabilizing structure is located outside the gas supply pipeline. The gas flowing into the inlet of the detection device can be detected by the detection part of the detection device after flowing through the flow stabilizing structure.

[0027] In a preferred embodiment, the flow stabilizing channel of the flow stabilizing structure includes a curved flow channel capable of changing the flow direction of the gas.

[0028] In a preferred embodiment, the gas supply pipeline has a connecting portion, which is used to be connected to the outlet of the gas electronic proportion adjustment device. The inlet of the detection device is arranged on the connecting portion, and the connecting portion has a connecting port connected to the inlet of the detection device.

[0029] The technical solution of the utility model has the following significant beneficial effects:

[0030] In an embodiment of the present application, the gas water heater is provided with a flow stabilizing structure. When part of the gas flows in through the inlet of the flow stabilizing structure, flows steadily through the flow stabilizing channel and flows out from the outlet of the flow stabilizing structure, since part of the gas flows through the flow stabilizing channel, the flow speed and direction of the part of the gas can be controlled by utilizing the flow stabilizing channel, thereby achieving precise control of the flow of gas entering the flow stabilizing channel, and enabling the part of the gas to form a fluid with a significant inertial effect along the guide direction of the flow stabilizing channel, and flow toward the outlet of the flow stabilizing structure as a whole. After flowing out from the outlet of the flow stabilizing structure, it can be detected by the detection part of the detection device, thereby effectively reducing the influence of external interference factors on the pressure taking accuracy, improving the accuracy of gas detection, thereby improving the accuracy of gas regulation, and allowing the burner of the gas combustion device to burn at a better air-fuel ratio, thereby avoiding problems such as reduced working performance, deflagration during startup, and inability to startup.

[0031] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0033] Figure 1 This is a schematic structural diagram of a gas water heater provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of the matching relationship between an inlet and a connecting portion of a detection device in a gas water heater provided in an embodiment of the present application;

[0035] Figure 3 It is an exploded schematic diagram of a connecting portion and a flow stabilizing structure body provided in an embodiment of the present application;

[0036] Figure 4 A schematic diagram of a flow stabilizing structure body provided in an embodiment of the present application;

[0037] Figure 5 A schematic diagram of another flow stabilizing structure body provided in an embodiment of the present application;

[0038] Figure 6 A schematic diagram of another flow stabilizing structure body provided in an embodiment of the present application;

[0039] Figure 7 A schematic diagram of the relative position relationship of the connection portion, the flow stabilizing structure body, and the outlet of the gas electronic ratio regulating device provided in the embodiment of the present application;

[0040] Figure 8 A schematic diagram of the relative position relationship of the flow stabilizing structure provided in the embodiment of the present application being externally disposed on the connecting portion;

[0041] Fig. 9 for Figure 8 A structural schematic diagram of the flow stabilization structure provided in the implementation method.

[0042] Reference numerals of the present application:

[0043] 1. Gas electronic ratio adjustment device;

[0044] 11. The outlet of the gas electronic proportional regulating device;

[0045] 2. Gas supply pipeline;

[0046] 3. Fan;

[0047] 31. Negative pressure inlet;

[0048] 4. Detection device;

[0049] 5. Flow-stabilizing structure;

[0050] 50. Flow stabilizing structure body;

[0051] 51. Import of steady flow structure;

[0052] 52. Steady flow channel;

[0053] 501, gas diversion groove;

[0054] 502, blocking part;

[0055] 503, arc-shaped guide part;

[0056] 504, fold line guide portion;

[0057] 505, curved flow channel;

[0058] 6. Connecting part;

[0059] 61. Limiting part;

[0060] 62. Connection port;

[0061] 8. Burner. DETAILED DESCRIPTION

[0062] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

[0063] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0065] The utility model provides a gas water heater in an embodiment, which can improve the accuracy of gas (flow rate and / or pressure) detection, thereby improving the accuracy of gas regulation.

[0066] Please refer to Figures 1 to 9In an embodiment of the specification of the present application, a gas water heater is provided, which may include: a burner, a fan, a gas electronic ratio adjustment device and a gas supply pipeline connected to the outlet of the gas electronic ratio adjustment device; after the fan is started, the gas can flow into the gas electronic ratio adjustment device and flow out of the gas supply pipeline, and the gas flowing out of the gas supply pipeline can be mixed with air and then burned in the burner; the gas water heater also includes a detection device, which is used to detect the flow rate and / or pressure of the gas and adjust the opening of the gas electronic ratio adjustment device according to the detection result; the gas water heater also includes a flow stabilizing structure, which has a flow stabilizing structure inlet, a flow stabilizing channel and a flow stabilizing structure outlet, the flow stabilizing structure inlet is used to make part of the gas flowing through the gas supply pipeline flow into the flow stabilizing channel, the flow stabilizing channel is used to stabilize the flow of the gas, and the detection device includes a detection unit, which is used to detect the flow rate and / or pressure of the gas flowing out of the flow stabilizing structure outlet.

[0067] In the embodiment of the present application, the gas water heater mainly includes: a burner 8, a gas electronic ratio adjustment device 1, a gas supply pipeline 2, a fan 3 and a detection device 4. After the fan 3 is started, the gas can flow into the gas electronic ratio adjustment device 1 and flow out of the gas supply pipeline 2, and the gas flowing out of the gas supply pipeline 2 can be mixed with air and then burned in the burner 8. The gas electronic ratio adjustment device 1, the gas supply pipeline 2 and the fan 3 are connected to form a gas channel.

[0068] In addition, the gas water heater may further include a gas inlet pipeline (not shown in the figure), which may be connected to the inlet of the gas electronic ratio adjustment device 1. When the fan 3 is started, under the action of the fan 3, the gas can enter the gas electronic ratio adjustment device 1 from the gas inlet pipeline and then flow out from the gas supply pipeline 2, and the gas flowing out from the gas supply pipeline 2 can be mixed with air for combustion.

[0069] The detection device 4 is used to detect the flow rate and / or pressure of the gas. Specifically, the detection device 4 is mainly used to obtain the flow rate and / or pressure of the gas flowing into the fan 3 and mixing with the air. The detection device 4 can be any one of a pressure sensor and a flow sensor, or the detection device 4 can also be in the form of other detection devices 4 that can detect gas flow and gas pressure, or in the form of a detection device 4 that can detect parameters equivalent to at least one of the gas flow and pressure. The specific form of the detection device 4 is not limited to the above description. The technicians in the relevant field may make other changes inspired by the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the scope of protection of this application.

[0070] In the implementation of the present application, the specific form of the detection device 4 is mainly explained by taking the pressure sensor as an example. When the detection device 4 is in other forms, it can be analogized with reference to the form of the above-mentioned pressure sensor, and the present application will not describe them one by one here. When the detection device 4 is a pressure sensor, the pressure sensor can be arranged outside the gas channel where the gas circulates, and the pressure is detected by using the external pressure sensor. When the pressure sensor is arranged outside the gas channel, it will not interfere with the flow of gas in the gas channel. At the same time, when the external pressure sensor performs pressure detection, it mainly performs static pressure detection by setting the inlet of the detection device 4 connected to the gas channel, and the accuracy and reliability of the detection are easy to control.

[0071] The gas electronic proportional adjustment device 1 can adjust its own opening according to the detection result of the detection device 4. Specifically, the gas electronic proportional adjustment device 1 includes: a valve body, a valve core matched with the valve body, a stepper motor connected to the valve core, and a computer board connected to the stepper motor electrical signal. After the detection device 4 (taking the pressure sensor as an example) detects the gas pressure, the converter set in the detection part will convert the detected gas pressure signal into an electrical signal and transmit it to the computer board, and the computer board adjusts the number of rotation steps of the stepper motor according to the electrical signal. Since the stepper motor is connected to the valve core, the position of the valve core relative to the valve body can be controlled by controlling the number of rotation steps of the stepper motor, that is, the opening of the gas electronic proportional adjustment device 1 can be adjusted. Among them, the number of rotation steps of the stepper motor is proportional to the opening of the gas electronic proportional adjustment device 1, that is, the more the stepper motor rotates, the greater the opening of the gas electronic proportional adjustment device 1.

[0072] The fan 3 may be an exhaust fan, and a negative pressure suction port 31 connected to the gas supply pipeline 2 may be provided on the fan 3. When the fan 3 is started, a negative pressure may be generated at the negative pressure suction port 31, so that the gas in the gas supply pipeline 2 is sucked in and mixed with the air. Of course, in some embodiments, the fan 3 may be a blower. In the embodiments of the present application, an exhaust fan is mainly used as an example for illustration.

[0073] The gas supply pipeline 2 is connected between the outlet 11 of the gas electronic ratio adjustment device and the negative pressure suction port 31 of the fan 3. The gas supply pipeline 2 can be a hollow tube. Specifically, the cross-sectional dimensions of the gas supply pipeline 2 can be comprehensively determined according to parameters such as the power of the gas furnace, and the present application does not make specific limitations here.

[0074] The inventors of the present application have discovered that there are some external interference factors that affect the pressure accuracy (taking the detection device 4 as a pressure sensor as an example). For example, since the structure of the gas flow channel inside the valve body is very complex, it will cause great disturbances to the gas flow, making it difficult to ensure the pressure accuracy.

[0075] In addition, during the operation of the fan 3, its own operating parameters (for example, the fan speed) will inevitably fluctuate to a certain extent. When the speed of the fan 3 fluctuates, the fluctuation will affect the flow of the gas, and the flow and pressure in the gas channel will also fluctuate.

[0076] In an embodiment of the present application, the gas water heater may further include: a flow stabilizing structure 5, the flow stabilizing structure 5 having a flow stabilizing structure inlet 51, a flow stabilizing channel 52 and a flow stabilizing structure outlet, part of the gas energy flows in from the flow stabilizing structure inlet 51, flows steadily through the flow stabilizing channel 52 and flows out from the flow stabilizing structure outlet and is detected by the detection part of the detection device 4.

[0077] In the embodiment of the present application, the flow stabilizing structure 5 is mainly used to stabilize the flow of the gas before detection by the detection part of the detection device 4, so as to improve the accuracy of gas detection and further improve the accuracy of gas regulation.

[0078] When part of the gas flows in through the inlet 51 of the flow stabilizing structure, flows steadily through the flow stabilizing channel 52 and flows out from the outlet of the flow stabilizing structure, since the part of the gas flows through the flow stabilizing channel 52, the flow stabilizing channel 52 can be used to control the flow speed and direction of the part of the gas, so as to achieve precise control of the flow of the gas entering the flow stabilizing channel 52, so that the part of the gas can form a fluid with a significant inertial effect along the guide direction of the flow stabilizing channel 52, and flow toward the outlet of the flow stabilizing structure as a whole. After flowing out from the outlet of the flow stabilizing structure, it can be detected by the detection part of the detection device 4, so as to effectively reduce the influence of external interference factors on the pressure taking accuracy, improve the accuracy of gas detection, thereby improving the accuracy of gas regulation, so that the burner of the gas combustion device can burn at a better air-fuel ratio, and avoid problems such as reduced working performance, deflagration during startup and inability to start up.

[0079] Please refer to Figures 2 to 3 In some embodiments, the inlet of the detection device 4 is located downstream of the outlet of the flow stabilizing structure, and part of the gas flowing through the gas supply pipeline 2 can flow in from the inlet 51 of the flow stabilizing structure, and after being stabilized by the flow stabilizing channel 52 and flowing out from the outlet of the flow stabilizing structure, it flows into the inlet of the detection device 4.

[0080] In this embodiment, in the gas flow direction, the flow stabilizing structure 5 may be located upstream of the inlet of the detection device 4 .

[0081] The inlet of the detection device 4 is arranged on the gas supply pipeline 2. When the inlet of the detection device 4 is arranged on the gas supply pipeline 2, it can be arranged on the pipeline body of the gas supply pipeline 2, or on the connection part 6 for connecting the gas supply pipeline 2 with the gas electronic ratio adjustment device 1.

[0082] Of course, in some embodiments, the inlet of the detection device 4 can also be set on a connector for docking with the gas supply pipeline 2, or set at the outlet of the gas electronic ratio adjustment device 1. In the embodiments of the present application, the inlet of the detection device 4 is mainly set in the gas supply pipeline 2 as an example for illustration.

[0083] In one embodiment, the flow stabilizing structure 5 has a flow stabilizing structure body 50, and the flow stabilizing structure body 50 is located in the air supply pipeline 2. There is a predetermined distance between the outer surface of the flow stabilizing structure body 50 and a part of the inner surface of the air supply pipeline 2 to form the flow stabilizing channel 52, and the flow stabilizing structure inlet 51 is arranged through the flow stabilizing structure body 50.

[0084] In some embodiments, the outlet of the stabilizing structure may be provided through the air supply pipeline 2. Alternatively, in some embodiments, the outlet of the stabilizing structure may be formed by a stabilizing channel 52 at the end position, and a through hole is provided on the air supply pipeline 2, and the through hole is mainly used to install the inlet of the detection device 4.

[0085] In this embodiment, the flow stabilizing structure body 50 can be a relatively independent component, and the flow stabilizing structure body 50 cooperates with the gas supply pipeline 2 to form a flow stabilizing channel 52. A through hole penetrating the side wall is provided on the flow stabilizing structure body 50, and the through hole is used as a flow stabilizing structure inlet 51, which is used to guide part of the gas into the flow stabilizing channel 52. The gas supply pipeline 2 is provided with a through hole penetrating the side wall of the gas supply pipeline 2, and the through hole is used as a flow stabilizing structure outlet, which is used to cooperate with the inlet of the detection device 4, so as to guide part of the gas that has passed through the flow stabilizing channel 52 to the detection device 4.

[0086] Specifically, the flow stabilizing structure body 50 can be detachably embedded in the gas supply pipeline 2. Further, the flow stabilizing structure body 50 can be in a ring state. When the flow stabilizing structure body 50 is in a ring shape, its inner surface can be formed with a cylindrical hole whose flow cross section matches the gas supply pipeline 2, so as not to affect the flow of the main part of the gas in the gas supply pipeline 2; its outer surface can cooperate with the inner surface of the gas supply pipeline 2 to form a flow stabilizing channel 52.

[0087] Of course, in other embodiments, the flow-stabilizing structure body 50 may also have other structures. For example, the flow-stabilizing structure body 50 is composed of multiple parts spliced ​​together in the circumferential direction and / or axial direction, or the flow-stabilizing structure body 50 may be provided with notches in local circumferential directions, etc. Of course, the specific construction method of the flow-stabilizing structure body 50 may also be other methods, and is not limited to the above description. Technical personnel in the relevant field may make other changes inspired by the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the protection scope of this application.

[0088] See also Figures 1 to 3 In one embodiment, the gas supply pipeline 2 has a connecting portion 6, which is used to be connected to the outlet 11 of the gas electronic proportion adjustment device. The inlet of the detection device 4 is arranged on the connecting portion 6, and the connecting portion 6 has a connecting port 62 that is connected to the inlet of the detection device 4. The flow stabilizing structure body 50 is located in the connecting portion 6, and the outer surface of the flow stabilizing structure body 50 of the connecting portion flow stabilizing structure is at a predetermined distance from a part of the inner surface of the connecting portion 6 to form the flow stabilizing channel 52.

[0089] In this embodiment, a connection portion 6 for connecting the gas supply pipeline 2 to the outlet 11 of the gas electronic ratio regulating device may be provided in the gas supply pipeline 2. The main difference from the above embodiment is that the flow stabilizing structure body 50 is specifically located in the connection portion 6. The connection portion 6 can be replaced by a pipe section of the gas supply pipeline 2 in the above embodiment for installing the flow stabilizing structure body 50.

[0090] For the gas supply pipeline 2, it is generally necessary to set a connection mechanism between it and the gas electronic ratio adjustment device 1 to ensure that the two are reliably sealed and docked. Specifically, the connection mechanism can be a flange mechanism, and the connection part 6 can be in the form of a connection flange. When the connection part 6 is in the form of a connection flange, the flow stabilizing channel 52 can be annular as a whole.

[0091] Specifically, a connection port 62 communicating with the inlet of the detection device 4 is provided on the side wall of the connection portion 6, and the flow stabilizing structure body 50 can be embedded in the connection portion 6, and a predetermined distance is provided between the outer surface of the flow stabilizing structure body 50 and a part of the inner surface of the connection portion 6 to form the flow stabilizing channel 52. In some embodiments, the flow stabilizing structure outlet can be formed by the flow stabilizing channel 52 at the end position, and in the gas flow direction, the connection port 62 of the connection portion 6 can be located downstream of the flow stabilizing structure outlet.

[0092] Alternatively, in other embodiments, the connection port 62 on the connection portion 6 may be the outlet of the flow stabilizing structure. When the connection port 62 on the connection portion 6 is the outlet of the flow stabilizing structure, the connection port 62 may be an interface protruding from the surface of the connection portion 6 and the detection device 4, and at least part of the inlet of the detection device 4 may be sleeved on the periphery of the interface. The specific form of the flow stabilizing structure body 50 and the specific form of the flow stabilizing channel 52 may refer to the specific description of the above-mentioned embodiment, and the present application will not describe them in detail here.

[0093] like Figure 7 As shown, one side of the flow stabilizing structure body 50 abuts against the end face of the outlet 11 of the gas electronic proportion regulating device, a limiting portion 61 is provided inside the connecting portion 6 , and the other side of the flow stabilizing structure body 50 abuts against the limiting portion 61 .

[0094] In this embodiment, the flow stabilizing structure body 50 can be a ring with a certain thickness. One side of the flow stabilizing structure body 50 along the thickness direction can be against the end face of the outlet 11 of the gas electronic proportional adjustment device, and the other side can be against the limiting part 61 inside the connecting part 6, so as to achieve positioning in the thickness direction.

[0095] Specifically, a stepped hole may be formed inside the connection part 6, and the variable diameter portion of the stepped hole forms a limiting portion for abutting against the flow stabilizing structure body 50. The stepped hole portion of the connection part has a larger first aperture and a relatively smaller second aperture, wherein the first aperture position corresponds to the first hole section, and the first hole section is used to install the flow stabilizing structure body 50. The first aperture may be the same as or close to the outer diameter of the flow stabilizing structure body 50. When the flow stabilizing structure body 50 is installed in the first hole section, the two may be matched with zero clearance or small clearance. The second aperture may be the same as or close to the inner diameter of the flow stabilizing structure body 50, so that the gas flow through the transition position between the flow stabilizing structure body 50 and the connection part 6 is not disturbed.

[0096] Of course, the specific form of the limiting portion 61 is not limited to the above-mentioned distance. For example, the limiting portion 61 can also be a local protrusion formed on the inner surface of the connecting portion 6, or the specific setting method of the limiting portion 61 can also be other methods, not limited to the above description. Technical personnel in the relevant field may make other changes inspired by the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the protection scope of this application.

[0097] In one embodiment, the gas water heater further comprises a seal, which is used to seal the gap between the flow stabilizing structure body 50 and the connecting portion 6 , and the seal is disposed between the connecting portion 6 and the outlet of the gas electronic ratio regulating device 1 .

[0098] In this embodiment, there may be a certain gap between the flow stabilizing structure body 50 and the connecting part 6 to prevent the gas from flowing directly into the inlet of the detection device 4 from the gap between the flow stabilizing structure body 50 and the connecting part 6, and cannot be stabilized by the flow stabilizing structure 5. The gas water heater may also include a seal. Specifically, the seal may be arranged between the connecting part 6 and the outlet of the gas electronic proportional adjustment device 1. The seal may be annular as a whole, and its projection toward the connecting part 6 can cover the gap between the flow stabilizing structure body 50 and the connecting part 6. Among them, when the connecting part 6 is in the form of a connecting flange, since a seal is generally required to be arranged at the docking position when the two connecting flanges are docked, the seal may use the seal of the flange mechanism.

[0099] In some embodiments, the gas stove may further include: a controller, the controller is communicatively connected with the fan 3 and the detection device 4 , and the gas electronic ratio adjustment device 1 is communicatively connected with the detection device 4 .

[0100] In this embodiment, the gas furnace may also be provided with a controller, and the controller may acquire the gas pressure and / or flow of the detection device 4 and the operating parameters of the fan 3 by communicating with the fan 3 and the detection device 4 .

[0101] Furthermore, the detection part of the detection device 4 is arranged on the computer board of the gas electronic proportion regulating device 1, the gas flowing into the inlet of the detection device 4 is guided to the detection part through a hose, and the controller is communicatively connected with the detection part on the computer board of the gas electronic proportion regulating device 1.

[0102] In this embodiment, the electronic gas ratio adjustment device 1 is provided with a computer board, and the detection part of the detection device 4 can be provided on the computer board of the electronic gas ratio adjustment device 1. The inlet of the detection device 4 can be connected to the detection part through a hose. During the specific detection, the gas after the steady flow can flow in through the inlet of the detection device 4, be guided to the detection part through the hose, and be detected by the detection part. The pressure and / or flow signal of the gas detected by the detection part can be sent to the controller after being converted into an electrical signal by a converter.

[0103] In some embodiments, a gas guide groove 501 is formed on the outer surface of the flow stabilizing structure body 50 and / or a portion of the inner surface of the gas supply pipeline 2 .

[0104] In this embodiment, the outer surface of the flow stabilizing structure body 50 facing the gas supply pipeline 2 may be provided with a gas guide groove 501, or the inner surface of the pipe section of the gas supply pipeline 2 for installing the flow stabilizing structure body 50 may be provided with a gas guide groove 501; or, the outer surface of the flow stabilizing structure body 50 facing the gas supply pipeline 2 and the inner surface of the pipe section of the gas supply pipeline 2 for installing the flow stabilizing structure body 50 are both provided with a gas guide groove 501. The gas guide groove 501 can be used to form the flow stabilizing channel 52. When part of the gas flow enters the gas guide groove 501 through the flow stabilizing structure inlet 51, the flow direction and flow speed of the gas can be effectively controlled, and the gas guide groove 501 stabilizes the flow, thereby improving the pressure measurement accuracy.

[0105] like Figure 6 As shown, further, a blocking portion 502 is provided in the gas guide groove 501, and the blocking portion 502 is used to change the flow direction of the gas.

[0106] In this embodiment, by providing the blocking portion 502 in the gas guide groove 501, the gas entering the gas guide groove 501 can be guided toward a specified flow path. Specifically, when the gas flows through the blocking portion 502, its flow direction and flow speed are forced to change and flow toward the direction guided by the blocking portion 502, so that the flow direction and flow speed of the gas tend to be unified, thereby achieving the purpose of improving the pressure measurement accuracy.

[0107] The blocking portion 502 may be in the form of a plurality of baffles independently arranged in the gas flow guide groove 501, or the blocking portion 502 may be a plurality of baffles with one end in contact with the inner wall of the gas flow guide groove 501. The extension direction of the baffle is at a predetermined angle to the overall extension direction of the gas flow guide groove 501, so that the gas in the gas flow guide groove 501 can change its flow direction multiple times under the guidance of the baffle. Of course, the specific form of the blocking portion 502 is not limited to the above examples, and technicians in the relevant field may make other changes under the inspiration of the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the protection scope of this application.

[0108] In a specific scenario, the flow control of the gas is described by taking the blocking portion 502 independently provided in the gas guide groove 501 as an example. The blocking portion 502 cooperates with the edge of the gas guide groove 501 to form two different flow paths in the gas guide groove 501, the first flow path is located in the middle of the gas guide groove 501; the second flow path is located between the edge of the gas guide groove 501 and the blocking portion 502. The first flow path and the second flow path form a convergence point at the position where the blocking portion 502 is provided. The gas will converge periodically during the flow of the gas guide groove 501. During the convergence, the overall flow velocity of the gas can be accelerated, and it can be ensured that the gas reliably flows out from the outlet of the steady flow structure and is detected by the detection part of the detection device 4; in addition, the above-mentioned periodic convergence can also ensure that the flow velocity of the fluid tends to be uniform.

[0109] In some specific implementations, the edge of the gas guide groove 501 is changed to form an arc-shaped guide portion 503 and / or a folded line guide portion 504 .

[0110] like Figure 4 As shown, in a specific embodiment, the edge of the gas guide groove 501 is changed to form an arc-shaped guide portion 503.

[0111] In this embodiment, the edge of the gas guide groove 501 can be composed of multiple circular arcs that change direction periodically and alternately. When the gas flows through the gas guide groove 501, part of the gas will collide with the edge of the gas guide groove 501, and its flow direction and flow speed will be forced to change, and flow in the direction guided by the arc guide part 503, so that the flow direction and flow speed of the gas tend to be unified, thereby achieving the purpose of improving the pressure measurement accuracy.

[0112] like Figure 5 or Figure 6 As shown, in a specific embodiment, the edge of the gas guide groove 501 is changed to form a fold line guide portion 504 .

[0113] In this embodiment, the edge of the gas guide groove 501 can be composed of multiple line segments that change direction periodically and alternately. When the gas flows through the gas guide groove 501, part of the gas will collide with the edge of the gas guide groove 501, and its flow direction and flow speed will be forced to change, and flow in the direction guided by the fold line guide portion 504, so that the flow direction and flow speed of the gas tend to be unified, thereby achieving the purpose of improving the pressure measurement accuracy.

[0114] Alternatively, in a specific embodiment, the edge of the gas guide groove 501 is changed to form an arc-shaped guide portion 503 and a broken line guide portion 504 .

[0115] In this embodiment, the edge of the gas guide groove 501 may be an integration of the arc guide portion 503 and the fold line guide portion 504. For example, the edge of the gas guide groove 501 may be composed of circular arcs and line segments arranged alternately; or the edge of the gas guide groove 501 may be partially composed of multiple circular arcs that change direction periodically and alternately, and partially composed of multiple line segments that change direction periodically and alternately.

[0116] Of course, the specific structure of the edge of the gas guide groove 501 is not limited to the above examples. Technical personnel in the relevant field may make other changes inspired by the technical essence of this application. However, as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the scope of protection of this application.

[0117] In one embodiment, the number of the flow stabilizing structure inlets 51 is multiple, and the multiple flow stabilizing structure inlets 51 are multiple openings arranged at intervals.

[0118] Considering that particulate impurities may be entrained in the gas. When the flow stabilizing structure 5 is in use, its flow stabilizing structure inlet 51 is first in contact with the gas, and particulate impurities entrained in the gas may be blocked at the flow stabilizing structure inlet 51. In this embodiment, the flow stabilizing structure inlet 51 may be provided with multiple, specifically, the multiple flow stabilizing structure inlets 51 may be multiple openings arranged at intervals. Multiple openings are conducive to ensuring that when one or more of the openings are blocked, there are at least openings for part of the gas to flow into the flow stabilizing channel 52. That is, by providing multiple openings, the reliability of the flow stabilizing structure 5 during use can be improved and the failure rate can be reduced.

[0119] Furthermore, the opening area of ​​the inlet 51 of the flow stabilizing structure is smaller than the opening area of ​​the outlet of the flow stabilizing structure.

[0120] In this embodiment, the opening area of ​​the flow-stabilizing structure inlet 51 can be set to be relatively small. The flow-stabilizing structure inlet 51 with a smaller opening area can intercept particulate impurities entrained in the gas, which is equivalent to filtering the particulate impurities in the gas, so that the gas entering the flow-stabilizing channel 52 contains fewer particulate impurities, which will not affect the reliability of the flow-stabilizing channel 52 when in use. In addition, considering that the opening area of ​​the inlet of the detection device 4 is relatively small, when the flow-stabilizing structure inlet 51 is used to intercept the particulate impurities in the gas, the risk of the particulate impurities in the gas blocking the inlet of the detection device 4 can be reduced, thereby improving the reliability of pressure taking.

[0121] Among them, at least some of the openings of the flow stabilizing structure inlet 51 are arranged at different heights. For example, multiple openings used to form the flow stabilizing structure inlet 51 can be arranged at intervals along the height direction. Impurities in the fuel gas generally deposit downward, and even if the deposited impurities block the lower openings, the upper openings can still ensure the reliable entry of the fuel gas, which can reduce the risk of simultaneous blockage of multiple openings and ensure that the detection device 4 can perform reliable detection.

[0122] In a specific embodiment, in the height direction, the opening area of ​​the flow stabilizing structure inlet 51 at least partially located at a lower position is smaller than the opening area of ​​the flow stabilizing structure inlet 51 at least partially located at a higher position, or the opening area of ​​the flow stabilizing structure inlet 51 gradually decreases from top to bottom. The maximum value of the opening area of ​​the flow stabilizing structure inlet 51 located at the highest position is not greater than 7 square millimeters.

[0123] In this embodiment, in the height direction, the inlet of the flow stabilizing structure 5 can be located as a whole at the lower part, and the outlet of the flow stabilizing structure 5 can be located as a whole at the upper part. When the opening area of ​​the flow stabilizing structure inlet 51 located at least partially at a lower position is smaller than the opening area of ​​the flow stabilizing structure inlet 51 located at least partially at a higher position, the risk of the flow stabilizing structure inlet 51 located at a higher position and having a larger opening area being blocked can be reduced. In addition, when the areas of the multiple openings forming the flow stabilizing structure inlet 51 gradually increase from bottom to top, the risk of the openings being blocked can be gradually reduced from top to bottom, thereby ensuring that the openings relatively located at the upper part are not easily blocked, and ensuring that part of the gas can enter the flow stabilizing structure 5 through the openings. Even for the opening located at the highest position, the maximum value of its opening area is controlled within 7 square millimeters, thereby ensuring that particulate impurities in the gas can be effectively intercepted.

[0124] In one embodiment, the steady flow channel 52 may include at least two parallel sub-steady flow channels, and part of the gas can flow in from the steady flow structure inlet 51, flow steadily through the at least two parallel sub-steady flow channels, and flow out from the steady flow structure outlet to be detected by the detection unit of the detection device 4.

[0125] In the present embodiment, the steady flow channel 52 may also include at least two sub-steady flow channels. In the embodiment of the present application, the sub-steady flow channel is illustrated by including a first sub-steady flow channel and a second sub-steady flow channel as an example. When the number of sub-steady flow channels is more, it can be inferred based on the embodiments of the present application, and the present application will not be described one by one here. Among them, the first sub-steady flow channel and the second sub-steady flow channel can be connected to the inlet of the detection device 4 after being summarized at the outlet of the steady flow structure, or the first sub-steady flow channel and the second sub-steady flow channel can be not summarized at the outlet of the steady flow structure, and are respectively connected to the inlet of the detection device 4. Among them, a first opening connected to the first sub-steady flow channel is provided on the steady flow structure body 50, and a second opening connected to the second sub-steady flow channel is provided. The first opening and the second opening are used as the inlet of the steady flow structure 5. The first sub-steady flow channel and the second sub-steady flow channel are connected to the connection port 62 on the connection part 6.

[0126] When the steady flow channel 52 includes two sub-steady flow channels, when one of the sub-steady flow channels fails due to blockage or other reasons, the other sub-steady flow channel can still flow gas, thereby ensuring the reliability of pressure taking.

[0127] See also Figure 8 and Fig. 9 In other embodiments, the flow stabilizing structure 5 is arranged in the detection device 4, and the flow stabilizing structure 5 is located outside the gas supply pipeline 2. The gas flowing into the inlet of the detection device 4 can be detected by the detection part of the detection device 4 after passing through the flow stabilizing structure 5.

[0128] In this embodiment, the flow stabilizing structure 5 can be arranged in the detection device 4. The detection device 4 is entirely located outside the gas supply pipeline 2. Accordingly, the flow stabilizing structure 5 is also arranged outside the gas supply pipeline 2.

[0129] The gas supply pipeline 2 may be provided with an opening for installing the inlet of the detection device 4. The inlet of the detection device 4 may be sealed in the opening. Part of the gas flowing through the gas supply pipeline 2 can enter the detection device 4 through the inlet of the detection device 4, and then be stabilized by the flow stabilizing structure 5 before being detected by the detection part of the detection device 4.

[0130] Specifically, Fig. 9 As shown, the flow stabilizing channel 52 of the flow stabilizing structure 5 includes a curved flow channel 505 which can change the flow direction of the gas.

[0131] In this embodiment, the flow stabilizing structure 5 may be a hollow structure with a continuous flow stabilizing channel 52 disposed therein. The external structure of the flow stabilizing structure 5 is not specifically limited in this application. For example, it may be a rectangular parallelepiped shape as shown in the figure for easy processing and manufacturing. Of course, it may also be other forms that are easy to process and manufacture, such as a cylindrical shape. In addition, the flow stabilizing structure 5 may be in the form of a split structure or in the form of an integrated structure. Specifically, this application does not make a sole limitation here.

[0132] The flow stabilizing channel 52 may be a curved channel 505 that can change the flow direction of the gas. The curved channel 505 may include multiple bends. When the gas flows through the multiple bends, its flow direction will change. In addition, the speed of the gas will also change. After the gas flows through multiple bends, its flow direction and speed will be changed multiple times. When the gas is finally output from the flow stabilizing channel 52, its flow direction and speed can be basically uniform.

[0133] The bend may be in the form of an arc bend as shown in the figure, or a straight bend, or a combination of the two. Specifically, the present application does not make any sole limitation thereto.

[0134] like Figures 1 to 3 As shown, in one embodiment, the gas supply pipeline 2 has a connecting portion 6, and the connecting portion 6 is used to be connected to the outlet 11 of the gas electronic proportion adjustment device. The inlet of the detection device 4 is arranged on the connecting portion 6, and the connecting portion 6 has a connecting port 62 connected to the inlet of the detection device 4.

[0135] In this embodiment, the gas supply pipeline 2 may be provided with a connection portion 6 for connecting the gas supply pipeline 2 to the outlet 11 of the gas electronic ratio regulating device. The specific form of the connection portion 6 can refer to the specific description of the above embodiment, and this application will not repeat it here.

[0136] The connection portion 6 may be provided with a connection port 62 connected to the inlet of the detection device 4; the inlet of the detection device 4 is used to match the connection port 62 of the connection portion 6. Specifically, the inlet of the detection device 4 may be provided with a threaded joint, and the connection port 62 of the connection portion 6 may be provided with a threaded hole that matches the above-mentioned threaded joint. Of course, the specific matching method between the inlet of the detection device 4 and the connection port 62 of the connection portion 6 is not limited to the above-mentioned threaded matching structure, and it can also be other assembly methods, and the present application does not make specific limitations here.

[0137] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0138] The above-mentioned various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0139] The above are only a few embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be subject to the scope defined by the attached claims.

Claims

1. A gas water heater, characterized in that: The gas water heater comprises: a burner, a fan, a gas electronic ratio regulating device and a gas supply pipeline connected to the outlet of the gas electronic ratio regulating device; after the fan is started, gas can flow into the gas electronic ratio regulating device and flow out of the gas supply pipeline, and the gas flowing out of the gas supply pipeline can be mixed with air and then burned in the burner; The gas water heater further comprises a detection device, which is used to detect the flow rate and / or pressure of the gas and adjust the opening of the gas electronic proportional adjustment device according to the detection result; The gas water heater also includes a flow stabilizing structure, which has a flow stabilizing structure inlet, a flow stabilizing channel and a flow stabilizing structure outlet. The flow stabilizing structure inlet is used to allow part of the gas flowing through the gas supply pipeline to flow into the flow stabilizing channel, and the flow stabilizing channel is used to stabilize the flow of the gas. The detection device includes a detection part, which is used to detect the flow rate and / or pressure of the gas flowing out of the flow stabilizing structure outlet.

2. The gas water heater according to claim 1, characterized in that: The inlet of the detection device is located downstream of the outlet of the flow stabilizing structure. Part of the gas flowing through the gas supply pipeline can flow in from the inlet of the flow stabilizing structure, flow through the flow stabilizing channel and flow out from the outlet of the flow stabilizing structure, and then flow into the inlet of the detection device.

3. The gas water heater as claimed in claim 2, characterized in that: The inlet of the detection device is arranged on the air supply pipeline.

4. The gas water heater as claimed in claim 3, characterized in that: The flow stabilizing structure has a flow stabilizing structure body, which is located in the air supply pipeline. There is a predetermined distance between the outer surface of the flow stabilizing structure body and part of the inner surface of the air supply pipeline to form the flow stabilizing channel. The flow stabilizing structure inlet is arranged through the flow stabilizing structure body.

5. The gas water heater as claimed in claim 3, characterized in that: The gas supply pipeline has a connecting portion, which is used to be connected to the outlet of the gas electronic proportion adjustment device. The inlet of the detection device is arranged on the connecting portion, and the connecting portion has a connecting port that is connected to the inlet of the detection device. The flow stabilizing structure body is located in the connecting portion, and there is a predetermined distance between the outer surface of the flow stabilizing structure body and a part of the inner surface of the connecting portion to form the flow stabilizing channel.

6. The gas water heater as claimed in claim 5, characterized in that: The connecting portion includes a connecting flange, and the flow stabilizing channel is annular as a whole.

7. The gas water heater as claimed in claim 5, characterized in that: One side of the flow stabilizing structure body abuts against the end face of the outlet of the gas electronic proportion regulating device, a limiting portion is arranged inside the connecting portion, and the other side of the flow stabilizing structure body abuts against the limiting portion.

8. The gas water heater as claimed in claim 5, characterized in that: The gas water heater further comprises a seal, which is used to seal the gap between the flow stabilizing structure body and the connecting portion, and the seal is arranged between the connecting portion and the outlet of the gas electronic ratio regulating device.

9. The gas water heater according to claim 1, characterized in that: The gas water heater further comprises: a controller, wherein the controller is connected in communication with the fan and the detection device, and the gas electronic ratio adjustment device is connected in communication with the detection device.

10. The gas water heater according to claim 9, characterized in that: The detection part of the detection device is arranged on the computer board of the gas electronic ratio regulating device, the gas flowing into the inlet of the detection device is guided to the detection part through a hose, and the controller is communicatively connected with the detection part on the computer board of the gas electronic ratio regulating device.

11. The gas water heater according to claim 4, characterized in that: The flow stabilizing structure body is detachably embedded in the air supply pipeline.

12. The gas water heater as claimed in claim 4, characterized in that: A gas guide groove is formed on the outer surface of the flow stabilizing structure body and / or a portion of the inner surface of the gas supply pipeline.

13. The gas water heater as claimed in claim 12, characterized in that: A blocking portion is arranged in the gas guide groove, and the blocking portion is used to change the flow direction of the gas.

14. The gas water heater according to claim 12, characterized in that: The edge of the gas guide groove is changed to form an arc-shaped guide portion and / or a broken line guide portion.

15. The gas water heater as claimed in claim 4, characterized in that: The number of the flow stabilizing structure inlets is multiple, and the multiple flow stabilizing structure inlets are multiple openings arranged at intervals.

16. The gas water heater as claimed in claim 4, characterized in that: The opening area of ​​the inlet of the flow stabilizing structure is smaller than the opening area of ​​the outlet of the flow stabilizing structure.

17. The gas water heater according to claim 16, characterized in that: At least some of the openings of the inlet of the flow stabilizing structure are arranged at different heights.

18. The gas water heater as claimed in claim 17, characterized in that: In the height direction, the opening area of ​​the flow stabilizing structure inlet at least partially in the lower position is smaller than the opening area of ​​the flow stabilizing structure inlet at least partially in the higher position, or the opening area of ​​the flow stabilizing structure inlet gradually decreases from top to bottom.

19. The gas water heater according to claim 1, characterized in that: The steady flow channel includes at least two parallel sub-steady flow channels. Part of the gas can flow in from the inlet of the steady flow structure, flow steadily through the at least two parallel sub-steady flow channels, and flow out from the outlet of the steady flow structure to be detected by the detection part of the detection device.

20. The gas water heater according to claim 1, characterized in that: The flow stabilizing structure is provided in the detection device, and is located outside the gas supply pipeline. The gas flowing in from the inlet of the detection device can be detected by the detection part of the detection device after flowing through the flow stabilizing structure.

21. The gas water heater as claimed in claim 20, characterized in that: The flow stabilizing channel of the flow stabilizing structure includes a curved flow channel which can change the flow direction of the gas.

22. The gas water heater as claimed in claim 20, characterized in that: The gas supply pipeline has a connecting portion, which is used to be connected to the outlet of the gas electronic proportion regulating device. The inlet of the detection device is arranged on the connecting portion, and the connecting portion has a connecting port that is connected to the inlet of the detection device.

Images