Gas water heater, air pressure detection device and control method of air pressure detection device

Abstract

The invention relates to a gas water heater, an air pressure detection device and a control method of the air pressure detection device. The air pressure detection device comprises a fan, an air guide part, a driving part, an air pressure sensor and a controller. And the fan is provided with an air outlet duct. The air guide piece is provided with an air inlet part and a cavity which are communicated with each other, and the air inlet part is adjustably arranged in the air outlet duct. The driving piece is connected with the air guiding piece and used for driving the air inlet part to act. The wind pressure sensor is communicated with the cavity and used for sensing the wind pressure of the cavity. The controller is used for correspondingly controlling the driving part to work according to the air pressure of the cavity. Therefore, the air pressure value detected when the water heater is started can conform to the set pressure value, so that the water heater can be normally started, the qualified air pressure value can be kept all the time, the production process is simplified, the reliability of long-term use is improved, the manual maintenance and replacement frequency is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of water heaters, and in particular to a gas water heater, a wind pressure detection device and a control method thereof. Background Art

[0002] In a gas water heater, the wind pressure value when the fan is running is an important indicator to determine the stability of the product. Before the gas water heater starts heating, it is necessary to compare the detected wind pressure value of the fan with the set pressure value of the program. If the wind pressure value of the fan does not match the set pressure value, the gas water heater will enter the protection mode and will not ignite, and it will be judged as a quality problem.

[0003] Due to the process errors in the manufacturing process, the wind pressure value of the gas water heater fan is easily inconsistent with the set pressure value, which in turn causes repair and after-sales problems. In the relevant technology, in order to ensure the constant wind pressure value of the fan so that the gas water heater can start normally, one method is to fully check the wind pressure value of the fan during production. If it is inconsistent, the wind pressure nozzle is manually adjusted to make the wind pressure value reach the set pressure value. However, the process of fully checking the wind pressure value and manually adjusting the wind pressure nozzle is cumbersome and has low production efficiency. Summary of the invention

[0004] The first technical problem solved by the present application is to provide a wind pressure detection device, which can facilitate the wind pressure value detected when the water heater is started to match the set pressure value, so that the water heater can start heating normally, improve the reliability of long-term use, greatly reduce the number of manual maintenance and replacement times, and improve production efficiency.

[0005] The second technical problem solved by the present application is to provide a gas water heater, which can facilitate the wind pressure value detected when the water heater is started to match the set pressure value, so that the water heater can start heating normally, improve the reliability of long-term use, greatly reduce the number of manual maintenance and replacement times, and improve production efficiency.

[0006] The third technical problem solved by the present application is to provide a control method for a wind pressure detection device, which can facilitate the wind pressure value detected when the water heater is started to match the set pressure value, so that the water heater can start heating normally, improve the reliability of long-term use, greatly reduce the number of manual maintenance and replacement times, and improve production efficiency.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A wind pressure detection device, comprising:

[0009] A fan, wherein the fan is provided with an air outlet duct;

[0010] An air guide member, wherein the air guide member is provided with an air inlet portion and a cavity that are interconnected, and the air inlet portion is adjustably arranged inside the air outlet duct;

[0011] A driving member, the driving member is connected to the air guide member, and is used to drive the air inlet portion to adjust its position, so as to adjust the angular relationship between the air inlet portion and the air outlet direction or the air outlet direction of the air outlet duct;

[0012] A wind pressure sensor, the wind pressure sensor is used to detect the wind pressure of the cavity;

[0013] A controller is electrically connected to the driving member and the wind pressure sensor respectively, and is used to control the driving member to work according to the wind pressure in the cavity.

[0014] The wind pressure detection device described in this application has the following beneficial effects compared with the background technology:

[0015] After the above-mentioned wind pressure detection device is installed on the gas water heater, when water is turned on, the micro switch of the water valve will actuate to send a signal to the controller, and the controller will send a signal to the fan to start the fan, and at the same time send a signal to the solenoid valve to turn on the gas; after the fan is running, wind pressure is generated in the air outlet duct, and the physical quantity of the wind pressure is transmitted to the wind pressure sensor through the air guide member. When the wind pressure sensor detects that the wind pressure value is consistent with the set pressure value, the controller will judge that the fan is operating normally, and then send a signal to the pulse igniter, and the pulse igniter ignites the gas and starts normally.

[0016] In addition, when the detected wind pressure is too small or too large, the controller will send an adjustment signal to the driver, and the driver will drive the air inlet to move accordingly to adjust the angle relationship between the air inlet and the air outlet duct, so that the wind pressure value can be adjusted accordingly. Among them, when the air inlet is facing the flow channel, the wind pressure value at the cavity of the air guide is relatively large, otherwise it is small, so that the detected wind pressure value can be relatively constant, so that it is easy to make the wind pressure value detected when the water heater is started consistent with the set pressure value, so that the water heater can start normally; at the same time, it can effectively improve the situation that the gas water heater does not start due to a small amount of dust on the air duct or slight deformation of the impeller for a long time, causing the wind pressure to change, resulting in the pressure value not being consistent with the set pressure value, thereby improving the reliability of long-term use, greatly reducing the number of manual maintenance and replacement times, improving production efficiency, and increasing the service life of the fan, and improving the competitiveness of the product.

[0017] In one embodiment, the air guide is rotatably arranged inside the air outlet duct around its central axis, and the driving member is used to drive the air guide to rotate. Thus, when the driving member drives the air guide to rotate, the air inlet can be driven to rotate accordingly, so that the angle position of the air inlet can be adjusted to a suitable position.

[0018] In one embodiment, the driving member is configured as a first motor; the first motor is located outside the air outlet duct and connected to the outer wall of the air outlet duct; the wind pressure sensor is located outside the air outlet duct; the air guide is rotatably arranged through the wall of the air outlet duct, and the air guide extends to the outside of the air outlet duct and is connected to the first motor. In this way, both the first motor and the wind pressure sensor are located outside the air outlet duct, so that the internal space of the air outlet duct is not occupied, and thus the air outlet of the air outlet duct is not adversely affected.

[0019] In one embodiment, the first motor includes a housing, a stator assembly, a rotor assembly, and a bearing; the stator assembly, the rotor assembly, and the bearing are all mounted on the housing; the rotor assembly is inserted into the stator assembly and connected to the stator assembly; the air guide is inserted into the bearing and the rotor assembly, respectively. Thus, when the first motor is working, the rotation of the rotor assembly correspondingly drives the air guide to rotate. In addition, since the air guide is inserted into the bearing, the rotation effect is smooth and stable.

[0020] In one of the embodiments, the shell is detachably mounted on the outer wall of the air outlet duct by at least one fastener.

[0021] In one embodiment, the air guide is a pressure transmission tube, and the air inlet and the cavity are respectively located at two ends of the pressure transmission tube. In this way, the structure design of the air guide is relatively simple and has a good air guiding effect.

[0022] In one embodiment, the air inlet includes one or more vents formed on one side wall of the pressure transmission tube. Thus, when the vent is facing the gas discharge direction, the wind pressure sensor senses that the wind pressure value at the cavity is too large, and vice versa. Thus, after the air inlet is adjusted to a suitable angle, the wind pressure value detected when the gas water heater is started can be consistent with the set pressure value, so that the gas water heater can be started normally.

[0023] In one embodiment, the fan includes a second motor, a volute, and a wind impeller; the rotating shaft of the second motor is connected to the wind impeller, and the wind impeller is rotatably disposed in the volute; the volute is provided with the air outlet duct. Thus, when the second motor rotates, the wind impeller is driven to rotate stably, and when the wind impeller rotates, the wind can be discharged outward through the air outlet duct.

[0024] The above second technical problem is solved by the following technical solution:

[0025] A gas water heater comprises the wind pressure detection device.

[0026] When the gas water heater mentioned above is turned on for water use, the microswitch of the water valve sends a signal to the controller, and the controller sends a signal to the fan to start the fan, and at the same time sends a signal to the solenoid valve to turn on the gas; after the fan starts running, wind pressure is generated in the air outlet duct, and the physical quantity of the wind pressure is transmitted to the wind pressure sensor through the air guide. When the wind pressure sensor detects that the wind pressure value is consistent with the set pressure value, the controller judges that the fan is operating normally, and then sends a signal to the pulse igniter, and the pulse igniter ignites the gas and starts normally.

[0027] In addition, when the detected wind pressure is too small or too large, the controller will send an adjustment signal to the driver, and the driver will drive the air inlet to move accordingly to adjust the angle relationship between the air inlet and the air outlet duct, so that the wind pressure value can be adjusted accordingly. Among them, when the air inlet is facing the flow channel, the wind pressure value at the cavity of the air guide is relatively large, otherwise it is small, so that the detected wind pressure value can be relatively constant, so that it is easy to make the wind pressure value detected when the water heater is started consistent with the set pressure value, so that the water heater can start normally; at the same time, it can effectively improve the situation that the gas water heater does not start due to a small amount of dust on the air duct or slight deformation of the impeller for a long time, causing the wind pressure to change, resulting in the pressure value not being consistent with the set pressure value, thereby improving the reliability of long-term use, greatly reducing the number of manual maintenance and replacement times, improving production efficiency, and increasing the service life of the fan, and improving the competitiveness of the product.

[0028] The third technical problem mentioned above is solved by the following technical solution:

[0029] A control method for the wind pressure detection device comprises the following steps:

[0030] When the gas water heater needs to be started, the wind pressure of the cavity is obtained;

[0031] The wind pressure of the cavity is compared with a set pressure value, and the driving member is controlled to work accordingly according to the comparison result of the wind pressure and the set pressure value.

[0032] In the control method of the wind pressure detection device described above, when the detected wind pressure is too small or too large, the controller will send an adjustment signal to the driving part, and the driving part will drive the air inlet part to move accordingly to adjust the angle relationship between the air inlet part and the air outlet wind direction or the air outlet wind direction of the air outlet duct, so that the wind pressure value can be adjusted accordingly. Among them, when the air inlet part is facing the flow channel direction, the wind pressure value at the cavity of the air guide part is relatively large, otherwise it is small, so that the detected wind pressure value can be relatively constant, so that it is convenient to make the wind pressure value detected when the water heater is started consistent with the set pressure value, so that the water heater can start normally; at the same time, it can effectively improve the situation that the gas water heater does not start due to a small amount of dust on the air duct or slight deformation of the wind impeller due to long-term use, causing the wind pressure to change, resulting in the pressure value not being consistent with the set pressure value, thereby improving the reliability of long-term use, greatly reducing the number of manual maintenance and replacement times, improving production efficiency, and increasing the service life of the fan, and improving the competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 Schematic diagram of the structure of a wind pressure detection device according to an embodiment of the present application.

[0036] Figure 2 for Figure 1 A breakdown structure diagram of the structure shown.

[0037] Figure 3 This is a structural schematic diagram of a wind pressure detection device from one perspective according to an embodiment of the present application.

[0038] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at A.

[0039] Figure 5 This is a schematic structural diagram from another perspective of a wind pressure detection device according to an embodiment of the present application.

[0040] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at B.

[0041] Figure 7This is a schematic structural diagram of a driving member and an air guide member connected to each other in one embodiment of the present application.

[0042] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at C.

[0043] Fig. 9 for Figure 7 Schematic diagram of the cross-sectional structure of the structure shown.

[0044] Fig.10 Schematic diagram of control of a wind pressure detection device according to an embodiment of the present application.

[0045] Reference numerals:

[0046] 10. Fan; 11. Second motor; 12. Volute; 121. Air outlet duct; 13. Wind impeller; 14. Air outlet pipe; 20. Air guide; 21. Air inlet; 211. Air vent; 30. Driving member; 31. Shell; 32. Stator assembly; 33. Rotor assembly; 34. Bearing; 35. Fastener; 40. Wind pressure sensor; 50. Controller. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0048] Among them, the wind pressure value when the fan is running is an important indicator that determines the stability of the product. It plays an important role in the characteristics and stability of the fan. Therefore, ensuring constant wind pressure can effectively ensure the stability of the product and can adapt to use in different environments.

[0049] As described in the background technology, in order to ensure that the wind pressure value of the fan is constant, a full inspection of the wind pressure value is adopted. When there is a discrepancy, the wind pressure nozzle is manually adjusted. This method is cumbersome and has low production efficiency. In addition, the manual adjustment of the wind pressure nozzle is a single fan adjustment test wind pressure size, which is only an indirect judgment of whether the whole machine startup wind pressure value is met. After the fan is installed on the whole machine, there is still a high probability that the wind pressure value at startup does not meet the set pressure value. If the gas water heater starts poorly, the repair plan is to replace the fan, resulting in a great waste of resources.

[0050] Based on the above reasons, the present application provides a gas water heater, a wind pressure detection device and a control method thereof, which can facilitate the wind pressure value detected when the water heater is started to match the set pressure value, so that the water heater can start normally, improve the reliability of long-term use, greatly reduce the number of manual maintenance and replacement times, and improve production efficiency.

[0051] See also Figures 1 to 4 as well as Fig.10 , Figure 1 A schematic structural diagram of a wind pressure detection device according to an embodiment of the present application is shown. Figure 2 Shows Figure 1 A breakdown structure diagram of the structure shown. Figure 3 A schematic structural diagram of a wind pressure detection device according to an embodiment of the present application is shown from one perspective. Figure 4 Shows Figure 3 Schematic diagram of the enlarged structure at A. Fig.10 A control schematic diagram of a wind pressure detection device of an embodiment of the present application is shown. A wind pressure detection device provided in an embodiment of the present application comprises: a fan 10, an air guide 20, a driving member 30, a wind pressure sensor 40 and a controller 50. The fan 10 is provided with an air outlet duct 121. The air guide 20 is provided with an air inlet 21 and a cavity that are interconnected. The air inlet 21 is adjustably arranged inside the air outlet duct 121. The driving member 30 is connected to the air guide 20, and is used to drive the air inlet 21 to adjust its position, so as to adjust the angle relationship between the air inlet 21 and the air outlet duct 121, so as to adjust the wind pressure of the air inlet 21 accordingly. Optionally, the wind pressure sensor 40 is connected to the cavity, and the wind pressure sensor 40 is used to detect the wind pressure of the cavity. The controller 50 is electrically connected to the driving member 30 and the wind pressure sensor 40 respectively, and the controller 50 is used to control the driving member 30 to work according to the wind pressure of the cavity.

[0052] After the above-mentioned wind pressure detection device is installed on the gas water heater, when water is turned on, the micro switch of the water valve is actuated to send a signal to the controller 50, and the controller 50 sends a signal to the fan 10 to make the fan 10 run, and at the same time sends a signal to the solenoid valve to turn on the gas; after the fan 10 is running, wind pressure is generated in the air outlet duct 121, and the physical quantity of the wind pressure is transmitted to the wind pressure sensor 40 through the air guide 20. When the wind pressure sensor 40 detects that the wind pressure value is consistent with the set pressure value, the controller 50 accordingly determines that the fan 10 is operating normally, and then sends a signal to the pulse igniter, and the pulse igniter ignites the gas and starts normally.

[0053] In addition, when the detected wind pressure is too small or too large, the controller 50 will send an adjustment signal to the driving member 30, and the driving member 30 will drive the air inlet 21 to move accordingly to adjust the angle relationship between the air inlet 21 and the air outlet duct 121, so that the wind pressure value can be adjusted accordingly. Among them, when the air inlet 21 is facing the flow channel direction, the wind pressure value at the cavity of the air guide 20 is relatively large, and vice versa, so that the detected wind pressure value can be relatively constant, so that it is convenient to make the wind pressure value detected when the water heater is started consistent with the set pressure value, so that the water heater can start normally; at the same time, it can effectively improve the situation that the gas water heater does not start due to a small amount of dust on the air outlet duct 121 or slight deformation of the wind impeller due to long-term use, causing the wind pressure to change, resulting in the pressure value not being consistent with the set pressure value, thereby improving the reliability of long-term use, greatly reducing the number of manual maintenance and replacement times, improving production efficiency, and enhancing the competitiveness of the product. It is understandable that the controller 50 will control the driving member 30 to start only when the gas water heater starts heating and the detected wind pressure does not meet the requirements. In other cases, the driving member 30 is in an inoperative state.

[0054] In some embodiments, when the fan 10 generates wind pressure in the air outlet duct 121, the physical quantity of the wind pressure is transmitted to the wind pressure sensor 40 through the air guide 20. The wind pressure sensor 40 converts the physical value into a digital signal and transmits it to the controller 50 for analysis and processing.

[0055] Optionally, the controller 50 is designed as an electronic circuit board or processing chip integrated with a signal processor, for example, to analyze and process the signal input by the wind pressure sensor 40 (measuring the pressure at the cavity of the wind guide 20), and then output a corresponding command signal to the driver 30 to control the driver 30 to work. When the driver 30 is working, the wind pressure value detected by the wind pressure sensor 40 changes accordingly. When the wind pressure value sensed by the wind pressure sensor 40 matches the set pressure value, the driver 30 stops working.

[0056] Among them, the set pressure value is the qualified parameter standard determined in the early stage of development, and is also the parameter for the normal startup of the gas water heater. It is set according to the specific model. When the set pressure value is met, it can be used, and if it is not met, a fault will occur. Specifically, the set pressure value is set to M, for example. When the wind pressure value sensed by the wind pressure sensor 40 is, for example, 0.9M-1.1M, the corresponding judgment is consistent with the set pressure value; conversely, when the wind pressure value sensed by the wind pressure sensor 40 is, for example, greater than 1.1M, the corresponding judgment is greater than the set pressure value, and when the wind pressure value sensed by the wind pressure sensor 40 is, for example, less than 0.9M, the corresponding judgment is less than the set pressure value. It can be understood that by controlling the operation of the driving member 30, the wind pressure value detected by the wind pressure sensor 40 is consistent with the set pressure value, and there is no need to change the original set pressure value, thereby not affecting the control of other performances of the gas water heater.

[0057] It should be noted that there are many ways to adjust the position of the air inlet 21 inside the air outlet duct 121, including but not limited to rotation around its central axis, bending in any direction, translation, etc., and can be flexibly adjusted and set according to actual needs, as long as the wind pressure in the cavity can be adjusted accordingly after changing the position.

[0058] See also Figures 3 to 7 , Figure 5 A schematic structural diagram of a wind pressure detection device according to an embodiment of the present application from another perspective is shown. Figure 6 Shows Figure 5 Schematic diagram of the enlarged structure at B. Figure 7 The schematic diagram of the structure in which the driving member 30 is connected to the air guide member 20 in one embodiment of the present application is shown. In one embodiment, the air guide member 20 is rotatably arranged inside the air outlet duct 121 around its central axis, and the driving member 30 is used to drive the air guide member 20 to rotate. In this way, when the driving member 30 drives the air guide member 20 to rotate, the air inlet portion 21 can be driven to rotate accordingly, so that the angle position of the air inlet portion 21 can be adjusted to a suitable position.

[0059] See also Figures 4 to 9 , Fig. 9 Shows Figure 7 A schematic diagram of a cross-sectional structure of the structure shown. In one embodiment, the driving member 30 is configured as a first motor. The first motor is located outside the air outlet duct 121 and is connected to the outer wall of the air outlet duct 121. The wind pressure sensor 40 is located outside the air outlet duct 121. The air guide member 20 is rotatably arranged through the wall of the air outlet duct 121, and the air guide member 20 is connected to the first motor after extending to the outside of the air outlet duct 121. In this way, both the first motor and the wind pressure sensor 40 are located outside the air outlet duct 121, so that the internal space of the air outlet duct 121 is not occupied, and thus the air outlet of the air outlet duct 121 is not adversely affected.

[0060] See also Figure 7 and Fig. 9 In one embodiment, the first motor includes a housing 31, a stator assembly 32, a rotor assembly 33 and a bearing 34. The stator assembly 32, the rotor assembly 33 and the bearing 34 are all mounted on the housing 31. The rotor assembly 33 is inserted into the stator assembly 32 and connected to the stator assembly 32. The air guide 20 is inserted into the bearing 34 and the rotor assembly 33 respectively. In this way, when the first motor is working, the rotation of the rotor assembly 33 drives the air guide 20 to rotate accordingly. In addition, since the air guide 20 is inserted into the bearing 34, the bearing 34 supports the air guide 20, so that the rotation effect of the air guide 20 is smooth and smooth.

[0061] In one embodiment, the housing 31 is detachably mounted on the outer wall of the air outlet duct 121 via at least one fastener 35 .

[0062] Optionally, the fasteners 35 include but are not limited to screws, bolts, pins, rivets, clips, etc., and can be flexibly adjusted and set according to actual needs.

[0063] Optionally, the number of fasteners 35 includes but is not limited to one, two, three or other numbers.

[0064] See also Figure 7 and Fig. 9 In one embodiment, the air guide 20 is a pressure transmission tube, and the air inlet 21 and the cavity are respectively located at two ends of the pressure transmission tube. In this way, the structure design of the air guide 20 is relatively simple and has a good air guiding effect.

[0065] See also Figure 7 and Fig. 9 In one embodiment, the air inlet 21 includes one or more vents 211 formed on one side wall of the pressure transmission tube. In this way, when the vent 211 faces the gas discharge direction of the air outlet duct 121, more gas in the air outlet duct 121 enters the air guide 20 through the air inlet 21, and the wind pressure sensor 40 senses that the wind pressure value at the cavity is too large, otherwise it is too small. Therefore, after adjusting the air inlet 21 to a suitable angle, it is convenient to make the wind pressure value detected when the gas water heater is started match the set pressure value, so that the gas water heater can be started normally.

[0066] It should be noted that the number, size and shape of the vent holes 211 can be flexibly adjusted and set according to actual needs and are not limited here. When the number of the vent holes 211 is changed and / or the aperture size of the vent holes 211 is changed, the wind pressure value can be adjusted.

[0067] In one embodiment, the aperture size of the vent hole 211 is set to 0.1mm-20mm, specifically 1mm-5mm, including but not limited to 0.1mm, 1mm, 5mm, 10mm, 15mm, 20mm, etc. This can help to achieve more accurate adjustment of the wind pressure value in the cavity.

[0068] See also Figures 1 to 4In one embodiment, the fan 10 includes a second motor 11, a volute 12, and a wind impeller 13. The rotating shaft of the second motor 11 is connected to the wind impeller 13, and the wind impeller 13 is rotatably disposed in the volute 12. The volute 12 is provided with an air outlet duct 121. In this way, when the second motor 11 rotates, the wind impeller 13 is driven to rotate stably. When the wind impeller 13 rotates, wind pressure can be formed in the air outlet duct 121 of the volute 12. In addition, the volute 12 is provided with an air outlet pipe 14, and the airflow generated in the volute 12 is discharged to the outside through the air outlet pipe 14.

[0069] Optionally, the impeller 13 is composed of a plurality of blades, which can generate wind pressure with the volute 12 when running at high speed, so that the air can flow outward along the air outlet duct 121 at high speed.

[0070] See also Figures 1 to 4 In one embodiment, a gas water heater includes the wind pressure detection device of any of the above embodiments.

[0071] When the gas water heater mentioned above is turned on for water use, the micro switch of the water valve is actuated to send a signal to the controller 50, and the controller 50 sends a signal to the fan 10 to make the fan 10 run, and at the same time sends a signal to the solenoid valve to turn on the gas; after the fan 10 is running, wind pressure is generated in the air outlet duct 121, and the physical quantity of the wind pressure is transmitted to the wind pressure sensor 40 through the air guide 20. When the wind pressure sensor 40 detects that the wind pressure value is consistent with the set pressure value, the controller 50 accordingly determines that the fan 10 is operating normally, and then sends a signal to the pulse igniter, and the pulse igniter ignites the gas and starts normally.

[0072] In addition, when the detected wind pressure is too small or too large, the controller 50 will send an adjustment signal to the driving member 30, and the driving member 30 will drive the air inlet 21 to move accordingly to adjust the angle relationship between the air inlet 21 and the air outlet duct 121, so that the wind pressure value can be adjusted accordingly. Among them, when the air inlet 21 is facing the flow channel direction, the wind pressure value at the cavity of the air guide 20 is relatively large, and vice versa, so that the detected wind pressure value can be relatively constant, so that it is convenient to make the wind pressure value detected when the water heater is started consistent with the set pressure value, so that the water heater can start normally; at the same time, it can effectively improve the situation that the gas water heater does not start due to a small amount of dust on the air outlet duct 121 or slight deformation of the wind impeller due to long-term use, causing the wind pressure to change, resulting in the pressure value not being consistent with the set pressure value, thereby improving the reliability of long-term use, greatly reducing the number of manual maintenance and replacement times, improving production efficiency, and enhancing the competitiveness of the product.

[0073] See also Figures 1 to 4 In one embodiment, a control method of a wind pressure detection device comprises the following steps:

[0074] When the gas water heater needs to be started, the wind pressure of the cavity is obtained;

[0075] The wind pressure of the cavity is compared with the set pressure value, and the driving member 30 is controlled to work accordingly according to the comparison result of the wind pressure and the set pressure value.

[0076] Specifically, when the wind pressure in the cavity is the same or substantially the same as the set pressure value, the driving member 30 does not act;

[0077] Optionally, the set pressure value is, for example, M. When the wind pressure of the cavity is, for example, 0.9M-1.1M, the corresponding judgment is consistent with the set pressure value.

[0078] When the wind pressure in the cavity is less than the set pressure value, the driving member 30 drives the air inlet 21 to operate so as to increase the wind pressure in the cavity;

[0079] Optionally, when the wind pressure value sensed by the wind pressure sensor 40 is greater than 1.1 M, for example, it is correspondingly judged to be greater than the set pressure value.

[0080] When the wind pressure in the cavity is greater than the set pressure value, the driving member 30 drives the air inlet portion 21 to operate so as to reduce the wind pressure in the cavity.

[0081] Optionally, when the wind pressure value sensed by the wind pressure sensor 40 is, for example, less than 0.9 M, it is correspondingly judged to be less than the set pressure value.

[0082] In the control method of the wind pressure detection device described above, when the detected wind pressure is too small or too large, the controller 50 will send an adjustment signal to the driving member 30, and the driving member 30 will drive the air inlet 21 to move accordingly, so as to adjust the angle relationship between the air inlet 21 and the air outlet duct 121, so that the wind pressure value can be adjusted accordingly. Among them, when the air inlet 21 is facing the flow channel direction, the wind pressure value at the cavity of the air guide 20 is relatively large, and vice versa, so that the detected wind pressure value can be relatively constant, so that it is convenient to make the wind pressure value detected when the water heater is started consistent with the set pressure value, so that the water heater can start normally; at the same time, it can effectively improve the situation that the gas water heater does not start due to a small amount of dust on the air outlet duct 121 or slight deformation of the wind impeller, which causes the wind pressure to change due to long-term use, causing the pressure value to be inconsistent with the set pressure value, thereby improving the reliability of long-term use, greatly reducing the number of manual maintenance and replacement times, improving production efficiency, and enhancing the competitiveness of the product.

[0083] In the description of the present application, it should be understood that if 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", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 application.

[0084] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0085] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0086] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0087] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If 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. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0088] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A wind pressure detection device, characterized in that: The wind pressure detection device comprises: A fan (10), wherein the fan (10) is provided with an air outlet duct (121); An air guide member (20), the air guide member (20) being provided with an air inlet portion (21) and a cavity that are in communication with each other, the air inlet portion (21) being adjustably arranged inside the air outlet duct (121); a driving member (30), the driving member (30) being connected to the air guide member (20) and being used for driving the air inlet portion (21) to adjust its position, so as to adjust the angular relationship between the air inlet direction or the air outlet direction of the air inlet portion (21) and the air outlet duct (121); A wind pressure sensor (40), the wind pressure sensor (40) being used to detect the wind pressure of the cavity; A controller (50), wherein the controller (50) is electrically connected to the driving member (30) and the wind pressure sensor (40) respectively, and the controller (50) is used to control the operation of the driving member (30) according to the wind pressure of the cavity.

2. The wind pressure detection device according to claim 1, characterized in that: The air guide member (20) is rotatably arranged around its central axis inside the air outlet duct (121), and the driving member (30) is used to drive the air guide member (20) to rotate.

3. The wind pressure detection device according to claim 2, characterized in that: The driving member (30) is configured as a first motor; the first motor is located outside the air outlet duct (121) and is connected to the outer wall of the air outlet duct (121); the wind pressure sensor (40) is located outside the air outlet duct (121); the air guide member (20) is rotatably arranged through the wall of the air outlet duct (121), and the air guide member (20) is connected to the first motor after extending to the outside of the air outlet duct (121).

4. The wind pressure detection device according to claim 3, characterized in that: The first motor comprises a housing (31), a stator assembly (32), a rotor assembly (33) and a bearing (34); the stator assembly (32), the rotor assembly (33) and the bearing (34) are all mounted on the housing (31); the rotor assembly (33) is inserted into the stator assembly (32) and is connected to the stator assembly (32); and the air guide (20) is respectively inserted into the bearing (34) and the rotor assembly (33).

5. The wind pressure detection device according to claim 4, characterized in that: The shell (31) is detachably mounted on the outer wall of the air outlet duct (121) via at least one fastener (35).

6. The wind pressure detection device according to claim 2, characterized in that: The air guide member (20) is a pressure transmission tube, and the air inlet portion (21) and the cavity are respectively located at two ends of the pressure transmission tube.

7. The wind pressure detection device according to claim 6, characterized in that: The air inlet portion (21) comprises one or more air vents (211) formed on one side wall of the pressure transmission pipe.

8. The wind pressure detection device according to any one of claims 1 to 7, characterized in that: The fan (10) comprises a second motor (11), a volute (12) and a wind impeller (13); the rotating shaft of the second motor (11) is connected to the wind impeller (13), and the wind impeller (13) is rotatably arranged in the volute (12); the volute (12) is provided with the air outlet duct (121).

9. A gas water heater, characterized in that: The gas water heater comprises the wind pressure detection device as described in any one of claims 1 to 8.

10. A control method for a wind pressure detection device according to any one of claims 1 to 8, characterized in that: The steps include: When the gas water heater needs to be started, the wind pressure of the cavity is obtained; The wind pressure of the cavity is compared with a set pressure value, and the driving member (30) is controlled to operate accordingly according to the comparison result of the wind pressure and the set pressure value.

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