Control method of self-adaptive wind-pressure-resistant gas water heater and gas water heater

Abstract

The invention discloses a control method of a self-adaptive wind-pressure-resistant gas water heater and the gas water heater, and the control method comprises the following steps: 1) after water flow passes through a water flow sensor, a controller carries out complete machine self-inspection, and a fan is started; (2) the draught fan operates for a period of time according to factory set parameter values; 3) gradually increasing the wind speed of the fan according to the mounting environment until the maximum wind speed is reached, and running for a period of time; 4) gradually reducing the wind speed of the fan according to the mounting environment until the wind speed reaches the minimum wind speed, and running for a period of time; (5) the controller adjusts the wind speed of the draught fan to meet the environment wind pressure value of the installation environment, and parameters are stored; 6, a draught fan operates according to the parameters stored by the controller, a gas proportional valve is opened, an ignition needle in a combustor conducts ignition, a heat exchanger conducts heat exchange of cold water, and hot water is conveyed to a user. According to the control method of the self-adaption wind pressure resisting gas water heater, the gas water heater can improve the wind pressure in a self-adaption mode, and unnecessary customer complaint events can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water heaters, and in particular to a control method for a self-adaptive wind pressure resistant gas water heater and a gas water heater. Background Art

[0002] Before the gas water heater fan leaves the factory, the manufacturer sets a standard wind pressure resistance value based on empirical data, that is, the wind pressure resistance value is fixed. However, in actual use by users, the wind pressure resistance value set by the manufacturer may not meet the requirements, nor may it be suitable for all users, leading to customer complaints; Figure 3 As shown, the current wind pressure resistance principle is to determine the factory setting value, and the controller detects at a certain time interval, and fine-tunes the parameters to achieve wind pressure resistance, without considering various installation environments that occur during actual use.

[0003] Therefore, further improvements are necessary. Summary of the invention

[0004] The purpose of the present invention is to provide a control method and a gas water heater with simple structure, adaptive wind pressure increase, high wind resistance, avoidance of unnecessary customer complaints, and strong practicality, so as to overcome the shortcomings of the prior art.

[0005] A control method for a gas water heater with adaptive wind pressure resistance designed for this purpose is characterized by comprising the following steps: 1) After the water flows through the water flow sensor, the controller performs a self-check and the fan starts; 2) The fan runs for a period of time according to the factory-set parameter values; 3) The fan gradually increases the wind speed according to the installation environment until it reaches the maximum wind speed and runs for a period of time; 4) The fan gradually reduces the wind speed according to the installation environment until it reaches the minimum wind speed and runs for a period of time; 5) The controller adjusts the fan speed to meet the ambient wind pressure value of the installation environment and saves the parameters; 6) The fan runs according to the parameters saved in the controller, the gas proportional valve opens, the ignition needle in the burner ignites, the heat exchanger exchanges heat with cold water, and delivers hot water to the user.

[0006] In step 5), the fan speed adjustment process is as follows: A. The controller detects whether the fan wind pressure meets the ambient wind pressure value; B. If satisfied, save the parameters; If not, the controller adjusts the fan speed and sets the effective time to detect whether the fan pressure meets the ambient pressure value. If so, it returns to step A. If not, it determines that the fan or pressure is faulty.

[0007] In step 2), the fan runs for 1 to 2 minutes according to the factory-set parameter values.

[0008] In step 3), the fan runs at the maximum wind speed for 1 to 2 minutes.

[0009] In step 4), the fan runs at the minimum wind speed for 1 to 2 minutes.

[0010] In step 6), the controller detects at regular intervals whether the wind pressure of the fan meets the ambient wind pressure value.

[0011] In step 6), the controller automatically adjusts the opening of the gas proportional valve according to the target temperature, water flow rate and actual outlet water temperature.

[0012] In step 6), when the burner flame signal is normal, the ignition needle stops igniting.

[0013] In step 5), the controller adjusts the fan speed according to the duct resistance of the installation environment.

[0014] A gas water heater designed for this purpose is used to execute the control method of the adaptive wind pressure resistant gas water heater, which is characterized by comprising a body, in which a water flow sensor, a controller, a fan, a gas proportional valve, a burner and a heat exchanger are arranged, the water flow sensor is arranged on the water inlet pipeline, the water inlet pipeline is connected to the heat exchanger, the gas proportional valve is arranged on the air inlet pipeline, the air inlet pipeline is connected to the burner, the burner is located below the heat exchanger, the fan is arranged on the top of the body, and the fan is connected to the burner, and the controller is electrically connected to the water flow sensor, the fan and the gas proportional valve respectively.

[0015] The control method of the adaptive wind pressure resistant gas water heater of the present invention enables the fan to adapt to wind pressure resistance and can adjust the use parameters suitable for the installation environment according to the user's different installation and use scenarios. The controller adjusts the parameters according to the operating status of the fan, while retaining the old scheme's detection at time intervals and making timely fine adjustments, thereby doubly ensuring the user's safety and satisfaction and avoiding unnecessary customer complaints; at the same time, the gas water heater can adaptively increase the wind pressure to achieve high wind resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a control flow chart of a gas water heater in one embodiment of the present invention.

[0017] Figure 2 Schematic diagram of the internal structure of a gas water heater in one embodiment of the present invention.

[0018] Figure 3 This is the control flow chart of a traditional gas water heater. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] See also Figure 1-Figure 2 The control method of the adaptive wind pressure resistant gas water heater comprises the following steps: 1) After the water flows through the water flow sensor 1, the controller 2 performs a self-check of the whole machine and the fan 3 starts; 2) Fan 3 runs for a period of time according to the factory-set parameter values; 3) Fan 3 gradually increases the wind speed according to the installation environment until it reaches the maximum wind speed and runs for a period of time; 4) Fan 3 gradually reduces the wind speed according to the installation environment until it reaches the minimum wind speed and runs for a period of time; 5) The controller 2 adjusts the wind speed of the fan 3 to meet the ambient wind pressure value of the installation environment and saves the parameters; that is, the controller 2 adapts to the pipeline resistance of the user's installation environment.

[0021] 6) The fan 3 starts to run according to the parameters saved in the controller 2, the gas proportional valve 4 opens, the ignition needle in the burner 5 ignites, the ignition needle discharges, ignites the gas mixed in the air, and the heat exchanger 6 exchanges heat with cold water to deliver hot water to the user.

[0022] The above control method realizes the adaptive wind pressure resistance of the gas water heater, and automatically adjusts according to the detected environmental factors during actual use, thereby meeting the performance requirements while avoiding unnecessary customer complaints.

[0023] In step 5), the wind speed adjustment process of fan 3 is as follows: A. Controller 2 detects whether the wind pressure of fan 3 meets the ambient wind pressure value; B. If satisfied, save the parameters; If not, the controller 2 adjusts the wind speed of the fan 3 and sets a valid time to detect whether the wind pressure of the fan 3 meets the ambient wind pressure value. If so, it returns to step A. If not, it determines that the fan 3 or the wind pressure is faulty.

[0024] In step 2), fan 3 runs for 1 minute according to the factory-set parameter values.

[0025] In step 3), fan 3 runs at the maximum wind speed for 1 minute.

[0026] In step 4), fan 3 operates at the minimum wind speed for 1 minute.

[0027] In step 6), the controller 2 detects whether the wind pressure of the fan 3 meets the ambient wind pressure value at regular intervals, so as to fine-tune the wind speed of the fan 3 in a timely manner.

[0028] In step 6), the controller 2 automatically adjusts the opening of the gas proportional valve 4 according to the target temperature, water flow rate and actual outlet water temperature, so that the actual outlet water temperature reaches the target temperature, thereby achieving constant temperature water outlet.

[0029] In step 6), when the flame signal of burner 5 is normal, the ignition needle stops igniting and burner 5 enters a normal combustion state.

[0030] In step 5), the controller 2 adjusts the wind speed of the fan 3 according to the pipeline resistance of the installation environment to meet the ambient wind pressure value of the installation environment.

[0031] The gas water heater is used to execute the control method of the adaptive wind pressure resistant gas water heater, including a body 7, in which a water flow sensor 1, a controller 2, a fan 3, a gas proportional valve 4, a burner 5 and a heat exchanger 6 are arranged, the water flow sensor 1 is arranged on the water inlet pipeline, the water inlet pipeline is connected to the heat exchanger 6, the gas proportional valve 4 is arranged on the air inlet pipeline, the air inlet pipeline is connected to the burner 5, the burner 5 is located below the heat exchanger 6, the fan 3 is arranged on the top of the body 7, and the fan 3 is connected to the burner 5, the fan 3 provides oxygen for the combustion of the burner 5, and discharges the exhaust gas generated by the combustion to the outside, and the controller 2 is electrically connected to the water flow sensor 1, the fan 3 and the gas proportional valve 4 respectively.

[0032] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for illustrating the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A control method for a gas water heater with adaptive wind pressure resistance, characterized in that: The following steps are involved: 1) After the water flows through the water flow sensor (1), the controller (2) performs a self-check of the entire machine and the fan (3) starts; 2) The fan (3) runs for a period of time according to the factory-set parameter values; 3) The fan (3) gradually increases the wind speed according to the installation environment until it reaches the maximum wind speed and runs for a period of time; 4) The fan (3) gradually reduces the wind speed according to the installation environment until it reaches the minimum wind speed and runs for a period of time; 5) The controller (2) adjusts the wind speed of the fan (3) to meet the ambient wind pressure value of the installation environment and saves the parameters; 6) The fan (3) operates according to the parameters stored in the controller (2), the gas proportional valve (4) opens, the ignition needle in the burner (5) ignites, and the heat exchanger (6) exchanges heat with cold water to deliver hot water to the user.

2. The control method of the adaptive wind pressure resistant gas water heater according to claim 1, characterized in that: In step 5), the wind speed adjustment process of the fan (3) is as follows: A. The controller (2) detects whether the wind pressure of the fan (3) meets the ambient wind pressure value; B. If satisfied, save the parameters; If not, the controller (2) adjusts the wind speed of the fan (3) and sets a valid time to detect whether the wind pressure of the fan (3) meets the ambient wind pressure value. If so, the controller returns to step A. If not, the controller determines that the fan (3) or the wind pressure is faulty.

3. The control method of the adaptive wind pressure resistant gas water heater according to claim 1, characterized in that: In step 2), the fan (3) operates for 1 to 2 minutes according to the factory-set parameter values.

4. The control method of the adaptive wind pressure resistant gas water heater according to claim 1, characterized in that: In step 3), the fan (3) is operated at the maximum wind speed for 1 to 2 minutes.

5. The control method of the adaptive wind pressure resistant gas water heater according to claim 1, characterized in that: In step 4), the fan (3) is operated at the minimum wind speed for 1 to 2 minutes.

6. The control method of the adaptive wind pressure resistant gas water heater according to claim 1, characterized in that: In step 6), the controller (2) detects at regular intervals whether the wind pressure of the fan (3) meets the ambient wind pressure value.

7. The control method of the adaptive wind pressure resistant gas water heater according to claim 1, characterized in that: In step 6), the controller (2) automatically adjusts the opening of the gas proportional valve (4) according to the target temperature, the water flow rate and the actual outlet water temperature.

8. The control method of the adaptive wind pressure resistant gas water heater according to claim 1, characterized in that: In step 6), when the flame signal of the burner (5) is normal, the ignition needle stops igniting.

9. The control method of the adaptive wind pressure resistant gas water heater according to claim 1, characterized in that: In step 5), the controller (2) adjusts the wind speed of the fan (3) according to the pipeline resistance of the installation environment.

10. A gas water heater, used to execute the control method of the gas water heater with adaptive wind pressure resistance according to any one of claims 1 to 9, characterized in that: The invention comprises a machine body (7), wherein a water flow sensor (1), a controller (2), a fan (3), a gas proportional valve (4), a burner (5) and a heat exchanger (6) are arranged in the machine body (7), wherein the water flow sensor (1) is arranged on a water inlet pipeline, which is connected to the heat exchanger (6), the gas proportional valve (4) is arranged on an air inlet pipeline, which is connected to the burner (5), and the burner (5) is located below the heat exchanger (6), the fan (3) is arranged on the top of the machine body (7), and the fan (3) is connected to the burner (5), and the controller (2) is electrically connected to the water flow sensor (1), the fan (3) and the gas proportional valve (4) respectively.

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