Gas furnace with wind pressure sensor

Abstract

The gas furnace comprises a water collecting disc, a smoke exhaust fan, a pressure measuring pipe, the air pressure sensor and a control panel, an air pressure detection opening is formed in the outer side of the water collecting disc, the smoke exhaust fan is installed on the outer side of the water collecting disc, the air pressure sensor is installed on the outer side of the smoke exhaust fan, one end of the pressure measuring pipe is connected to the air pressure detection opening, and the other end of the pressure measuring pipe is connected to the control panel. The control panel is electrically connected with the smoke exhaust fan and the air pressure sensor, and the control panel is used for adjusting the rotating speed of the smoke exhaust fan. According to the scheme, the problems that an existing gas furnace is lack of an automatic fan rotating speed adjusting function, in the actual using process, the gas furnace may be interfered by various external factors, the factors may have adverse effects on the stability of the internal pressure of the gas furnace, and the service life of the gas furnace is influenced are solved. And if the gas furnace system does not have the capability of automatically adjusting the rotating speed of the fan according to the external conditions, the pressure in the gas furnace is difficult to stably maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stoves, in particular to a gas stove with a wind pressure sensor. Background Art

[0002] A gas furnace has been proposed in the prior art, comprising a controller, a fan and a wind pressure sensor. The wind pressure sensor is arranged on the air intake side of the fan, and the controller is electrically connected to the fan and the wind pressure sensor, respectively. The wind pressure sensor collects the wind pressure value on the air intake side of the fan, and the controller determines the specific location where the gas furnace is blocked based on the wind pressure value on the air intake side of the fan, so as to be able to quickly locate the fault location. However, the gas furnace system lacks the function of automatically adjusting the fan speed. During actual use, the gas furnace may encounter interference from various external factors, such as fluctuations in grid voltage, complex exhaust duct design, and increased static pressure caused by strong external winds. These factors may adversely affect the pressure stability inside the gas furnace. If the gas furnace system does not have the ability to automatically adjust the fan speed according to these external conditions, the pressure inside the gas furnace will be difficult to maintain stably, which may lead to a decrease in the safety of the gas furnace. Utility Model Content

[0003] In response to the above-mentioned defects, the present invention proposes a gas furnace with a wind pressure sensor, which aims to solve the problem that the existing gas furnace lacks the automatic adjustment function of the fan speed. During actual use, the gas furnace may encounter interference from various external factors, all of which may have an adverse effect on the pressure stability inside the gas furnace. If the gas furnace system does not have the ability to automatically adjust the fan speed according to these external conditions, then the pressure inside the gas furnace will be difficult to maintain stably.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A gas furnace with a wind pressure sensor, comprising a housing, a first gas pipe, a gas valve, a second gas pipe, a burner, an ignition needle, a heat exchange tube assembly, a water collecting tray, a smoke exhaust fan, a pressure measuring tube, a wind pressure sensor, a control panel, a blower, and a smoke exhaust pipe, wherein the burner comprises a first input end and a first output end, and the heat exchange tube assembly comprises a second input end and a second output end;

[0006] The first gas pipe, the gas valve, the second gas pipe, the burner, the ignition needle, the heat exchange tube assembly, the water collecting tray, the smoke exhaust fan, the pressure measuring tube, the wind pressure sensor, the control panel and the blower are all arranged inside the casing;

[0007] One end of the first gas pipe is connected to one end of the second gas pipe through the gas valve, and the other end of the second gas pipe is connected to the first input end of the burner, the ignition needle is arranged between the first output end of the burner and the second input end of the heat exchange tube assembly, the water collecting pan is connected to the second output end of the heat exchange tube assembly, the water collecting pan is provided with a wind pressure detection port and a smoke exhaust port on the outside of the heat exchange tube assembly, the smoke exhaust fan is installed on the outside of the water collecting pan, the smoke exhaust port is connected to one end of the smoke exhaust pipe, the other end of the smoke exhaust pipe passes through the top of the casing, the wind pressure sensor is installed on the outside of the smoke exhaust fan, one end of the pressure measuring tube is connected to the wind pressure detection port, and the other end of the pressure measuring tube is connected to the wind pressure sensor, the blower is located below the heat exchange tube assembly, and the control board is located in front of the blower. The control board is electrically connected to the gas valve, the smoke exhaust fan, the wind pressure sensor and the blower respectively, and the control board is used to adjust the speed of the smoke exhaust fan.

[0008] Preferably, the heat exchange tube assembly includes a primary heat exchange tube and a secondary heat exchange tube, and one end of the primary heat exchange tube is connected to one end of the secondary heat exchange tube.

[0009] Preferably, a flame sensor is further included, and the flame sensor is arranged between the first output end of the burner and the second input end of the heat exchange tube assembly.

[0010] Preferably, it further comprises a wind pressure switch, which is installed on the outside of the smoke exhaust fan and is electrically connected to the control panel.

[0011] Preferably, a nozzle is further included, and the nozzle is installed at the other end of the second gas pipe.

[0012] Preferably, a mounting base is further included, which is arranged below the smoke exhaust fan, and the control panel is detachably mounted on the mounting base.

[0013] Preferably, an exhaust port is provided on the top of the casing.

[0014] The technical solution provided by the utility model may have the following beneficial effects:

[0015] In this solution, by setting the pressure measuring tube and the wind pressure sensor, when the smoke exhaust fan is running, real-time wind pressure will be generated at the wind pressure detection port of the water collecting tray, and the real-time wind pressure will be transmitted to the wind pressure sensor through the pressure measuring tube. The wind pressure sensor converts the pressure value into an electrical signal and transmits it to the control board. The control board can calculate the difference between the real-time wind pressure and the preset wind pressure value, and adjust the speed of the smoke exhaust fan according to the difference, so that the real-time wind pressure reaches the preset wind pressure value, thereby maintaining the stability of the internal pressure of the gas furnace and improving the safety of the gas furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the internal structure of a gas furnace with a wind pressure sensor;

[0017] Figure 2 It is a side view of the internal structure of a gas furnace with a wind pressure sensor.

[0018] Among them, 1. casing; 2. first gas pipe; 3. gas valve; 4. second gas pipe; 5. burner; 6. ignition needle; 7. heat exchange tube assembly; 8. water collection tray; 9. exhaust fan; 10. pressure measuring tube; 11. wind pressure sensor; 12. control panel; 13. blower; 14. exhaust pipe; 15. flame sensor; 16. wind pressure switch; 17. nozzle; 18. mounting base; 19. exhaust port; 51. first input terminal; 52. first output terminal; 71. second input terminal; 72. second output terminal; 73. first stage heat exchange tube; 74. second stage heat exchange tube; 80. wind pressure detection port. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0020] In the description of the present invention, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means more than two.

[0022] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "installation," "splicing," and "connection" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] A gas furnace with a wind pressure sensor includes a housing 1, a first gas pipe 2, a gas valve 3, a second gas pipe 4, a burner 5, an ignition needle 6, a heat exchange tube assembly 7, a water collection tray 8, a smoke exhaust fan 9, a pressure measuring tube 10, a wind pressure sensor 11, a control panel 12, a blower 13, and a smoke exhaust pipe 14. The burner 5 includes a first input end 51 and a first output end 52, and the heat exchange tube assembly 7 includes a second input end 71 and a second output end 72.

[0024] The first gas pipe 2, the gas valve 3, the second gas pipe 4, the burner 5, the ignition needle 6, the heat exchange tube assembly 7, the water collecting tray 8, the smoke exhaust fan 9, the pressure measuring tube 10, the wind pressure sensor 11, the control panel 12 and the blower 13 are all arranged inside the casing 1;

[0025] One end of the first gas pipe 2 is connected to one end of the second gas pipe 4 through the gas valve 3, and the other end of the second gas pipe 4 is connected to the first input end 51 of the burner 5. The ignition needle 6 is arranged between the first output end 52 of the burner 5 and the second input end 71 of the heat exchange tube assembly 7. The water collecting tray 8 is connected to the second output end 72 of the heat exchange tube assembly 7. A wind pressure detection port 80 and a smoke exhaust port (not shown in the figure) are provided on the outside of the water collecting tray 8. The smoke exhaust fan 9 is installed on the outside of the water collecting tray 8, and the smoke exhaust port is connected to one end of the smoke exhaust pipe 14. The other end of the smoke exhaust pipe 14 passes through the top of the casing 1, the wind pressure sensor 11 is installed on the outside of the smoke exhaust fan 9, one end of the pressure measuring tube 10 is connected to the wind pressure detection port 80, and the other end of the pressure measuring tube 10 is connected to the wind pressure sensor 11. The blower 13 is located below the heat exchange tube assembly 7, and the control panel 12 is located in front of the blower 13. The control panel 12 is electrically connected to the gas valve 3, the smoke exhaust fan 9, the wind pressure sensor 11 and the blower 13 respectively, and the control panel 12 is used to adjust the speed of the smoke exhaust fan 9.

[0026] A gas furnace with a wind pressure sensor in this solution, such as Figure 1-2As shown, when the gas furnace needs to operate normally, gas is first introduced into the first gas pipe 2. Then, the control panel 12 controls the opening of the gas valve 3, which can adjust the gas flow rate. The gas enters the burner 5 through the second gas pipe 4 and is fully mixed with the air within the burner 5. When the gas-air mixture is output from the burner 5, the ignition needle 6 and the smoke exhaust fan 9 are activated. The gas-air mixture is ignited by the ignition needle 6, generating flue gas. The flue gas enters the heat exchange tube assembly 7 under the action of the smoke exhaust fan 9, where it undergoes heat exchange processing, producing condensed water and heat-exchanged flue gas. The condensed water is collected in the water collection tray 8, and the heat-exchanged flue gas is discharged outside the casing 1 through the smoke exhaust pipe 14. At the same time, the control panel 12 controls the blower 13 to start, and the cold air outside the casing 1 is sucked into the interior of the casing 1 under the action of the blower 13, and absorbs heat through the heat exchange tube assembly 7 to form hot air and be discharged outside the casing 1 to provide hot air to the room that needs heating.

[0027] In this solution, by setting the pressure measuring tube 10 and the wind pressure sensor 11, when the smoke exhaust fan 9 is running, real-time wind pressure will be generated at the wind pressure detection port 80 of the water collecting tray 8. The real-time wind pressure is transmitted to the wind pressure sensor 11 through the pressure measuring tube 10. The wind pressure sensor 11 converts the pressure value into an electrical signal and transmits it to the control board 12. The control board 12 can calculate the difference between the real-time wind pressure and the preset wind pressure value, and adjust the speed of the smoke exhaust fan 9 according to the difference, so that the real-time wind pressure reaches the preset wind pressure value, thereby maintaining the stability of the internal pressure of the gas furnace and improving the safety of the gas furnace.

[0028] Preferably, the heat exchange tube assembly 7 includes a primary heat exchange tube 73 and a secondary heat exchange tube 74, and one end of the primary heat exchange tube 73 is connected to one end of the secondary heat exchange tube 74. Figure 2 As shown, as the flue gas enters the heat exchange tube assembly 7 under the action of the exhaust fan 9, it first enters the primary heat exchange tube 73. The flue gas transfers its high-temperature heat to the primary heat exchange tube 73, causing the flue gas temperature to drop. After passing through the primary heat exchange tube 73, the flue gas has a lower temperature, but still contains a certain amount of heat. In the secondary heat exchange tube 74, this remaining heat is further absorbed by the tube, achieving further heat recovery and further reducing the flue gas temperature.

[0029] Preferably, a flame sensor 15 is further included, and the flame sensor 15 is arranged between the first output end 52 of the burner 5 and the second input end 71 of the heat exchange tube assembly 7. In this embodiment, Figure 2When the mixture of gas and air is ignited by the ignition needle 6, the flame sensor 15 can monitor in real time whether the mixture of gas and air is ignited successfully. When the flame sensor 15 detects the generation of flame, it indicates that the mixture of gas and air is ignited successfully, and the exhaust fan 9 is started to draw the smoke into the heat exchange tube assembly 7.

[0030] Preferably, it further comprises an air pressure switch 16, which is installed on the outside of the smoke exhaust fan 9 and is electrically connected to the control panel 12. Figure 1 As shown, the setting of the wind pressure switch 16 can detect the change of wind pressure in real time. When the wind pressure switch 16 detects that the wind pressure change is abnormal, the control board 12 will cut off the gas valve 3 after receiving the signal of the abnormal wind pressure change, thereby protecting the entire gas furnace.

[0031] Preferably, it further comprises a nozzle 17, which is installed at the other end of the second gas pipe 4. In this embodiment, Figure 2 As shown, the gas is injected into the burner 5 through the nozzle 17. The setting of the nozzle 17 allows the injection amount, injection speed and injection angle of the gas to be adjusted and controlled, thereby flexibly adjusting the supply of gas and achieving more precise combustion control.

[0032] Preferably, it further comprises a mounting base 18, which is arranged below the exhaust fan 9, and the control panel 12 is detachably mounted on the mounting base 18. Figure 2 As shown, the provision of the mounting seat 18 not only enables the fixation of the control panel 12 to be more stable, but also facilitates the disassembly and maintenance of the control panel 12 .

[0033] Preferably, an air outlet 19 is provided on the top of the housing 1. Figure 1 As shown, the cold air outside the casing 1 is sucked into the interior of the casing 1 by the blower 13, and absorbs heat through the heat exchange tube assembly 7 to form hot air, and the hot air is discharged outside the casing 1 through the exhaust port 19.

[0034] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. A gas stove with a wind pressure sensor, characterized in that: The burner comprises a casing, a first gas pipe, a gas valve, a second gas pipe, a burner, an ignition needle, a heat exchange tube assembly, a water collecting tray, a smoke exhaust fan, a pressure measuring tube, a wind pressure sensor, a control panel, a blower and a smoke exhaust pipe. The burner comprises a first input end and a first output end, and the heat exchange tube assembly comprises a second input end and a second output end. The first gas pipe, the gas valve, the second gas pipe, the burner, the ignition needle, the heat exchange tube assembly, the water collecting tray, the smoke exhaust fan, the pressure measuring tube, the wind pressure sensor, the control panel and the blower are all arranged inside the casing; One end of the first gas pipe is connected to one end of the second gas pipe through the gas valve, and the other end of the second gas pipe is connected to the first input end of the burner, the ignition needle is arranged between the first output end of the burner and the second input end of the heat exchange tube assembly, the water collecting pan is connected to the second output end of the heat exchange tube assembly, the water collecting pan is provided with a wind pressure detection port and a smoke exhaust port on the outside of the heat exchange tube assembly, the smoke exhaust fan is installed on the outside of the water collecting pan, the smoke exhaust port is connected to one end of the smoke exhaust pipe, the other end of the smoke exhaust pipe passes through the top of the casing, the wind pressure sensor is installed on the outside of the smoke exhaust fan, one end of the pressure measuring tube is connected to the wind pressure detection port, and the other end of the pressure measuring tube is connected to the wind pressure sensor, the blower is located below the heat exchange tube assembly, and the control board is located in front of the blower. The control board is electrically connected to the gas valve, the smoke exhaust fan, the wind pressure sensor and the blower respectively, and the control board is used to adjust the speed of the smoke exhaust fan.

2. A gas stove with a wind pressure sensor according to claim 1, characterized in that: The heat exchange tube assembly includes a primary heat exchange tube and a secondary heat exchange tube, and one end of the primary heat exchange tube is connected to one end of the secondary heat exchange tube.

3. The gas stove with a wind pressure sensor according to claim 1, characterized in that: It also includes a flame sensor, which is arranged between the first output end of the burner and the second input end of the heat exchange tube assembly.

4. A gas stove with a wind pressure sensor according to claim 1, characterized in that: It also includes a wind pressure switch, which is installed on the outside of the smoke exhaust fan and is electrically connected to the control panel.

5. The gas stove with a wind pressure sensor according to claim 1, characterized in that: It also includes a nozzle, which is installed at the other end of the second gas pipe.

6. The gas stove with a wind pressure sensor according to claim 1, characterized in that: It also includes a mounting base, which is arranged below the smoke exhaust fan, and the control panel is detachably mounted on the mounting base.

7. The gas stove with a wind pressure sensor according to claim 1, characterized in that: An air outlet is provided on the top of the casing.

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