CN220958946U

CN220958946U - Gas water heater

Info

Publication number: CN220958946U
Application number: CN202322622151.8U
Authority: CN
Inventors: 卢宇轩; 杨志勇
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-05-14
Anticipated expiration: 2033-09-26

Abstract

The utility model relates to a gas water heater, comprising: the gas flow sensor comprises a gas pipeline, a gas flow sensor, a proportional valve assembly and a control panel; the gas flow sensor is arranged on the gas pipeline to detect the gas flow of the gas pipeline; the proportional valve assembly is arranged on the gas pipeline to adjust the gas flow of the gas pipeline; the control panel is electrically connected with the gas flow sensor and the proportional valve assembly to obtain the gas flow of the gas pipeline and the opening or current value of the proportional valve assembly, so that the type of the gas consumed by the gas water heater can be determined according to the gas flow of the gas pipeline and the opening or current value of the proportional valve assembly. The utility model can effectively reduce the accumulated error and reduce the risk of erroneous judgment of the control panel.

Description

Gas water heater

Technical Field

The embodiment of the application relates to the technical field of household appliances, in particular to a gas water heater.

Background

The gas water heater is a water heater device which is heated by gas, and the working principle is that the gas releases heat when in combustion, and the water is heated by heat conduction. For the gas water heater, the lifted flame gas refers to gas generated in the combustion process, and comprises flue gas, carbon monoxide, nitrogen oxides and the like which are not completely combusted. These gases, if not properly vented, may be harmful to the human body. Standard gas refers to gas tested under specified conditions and includes natural gas or liquefied gas connected with a water heater. Under the test condition of standard gas, the performance indexes such as the thermal efficiency, the discharge level and the like of the gas water heater can be tested, so that the safe, reliable and efficient operation of the gas water heater is ensured. In general, the lifted flame gas and the standard gas are very important indexes, so that a user can be helped to know the conditions of safety performance, energy efficiency and the like of the use of the lifted flame gas.

The gas water heater in the outlet europe needs to meet EN26-2015 standard, which requires that the difference between the carbon monoxide conversion value of the flame gas and the carbon monoxide conversion value of the standard gas is not more than 100 under the maximum load condition and the minimum load condition of the gas water heater. In general, different air volumes are needed to be provided for the lifted flame gas and the standard gas, namely, the rotating speed of the fan is controlled to ensure that the difference between the carbon monoxide conversion value of the lifted flame gas and the carbon monoxide conversion value of the standard gas is not more than 100, which requires the gas water heater to be capable of identifying the lifted flame gas and the standard gas. Under the general condition, two gases are identified by calculating the water production value by utilizing the heat value difference of the lifted flame gas and the standard gas, the collected data are transmitted to a control board by the water inlet temperature probe, the water outlet temperature probe and the water flow sensor assembly, and the gas type can be identified after a series of calculation.

In the prior art, data are collected through three parts, namely a water inlet temperature probe, a water outlet temperature probe and a water flow sensor, then the collected data are transmitted to a control board, and the gas type is identified through calculation. All three components belong to an electronic sensor, and the data acquired by the electronic sensor and the actual value are in error. Because the number of the sensors is too large, the accumulated error of the water production value calculated by the control board is too large, and the control board identification error is easy to cause.

Disclosure of utility model

The utility model aims to provide a gas water heater which can help to reduce the risk of misjudging the gas type by a control panel.

The technical problems are solved by the following technical scheme:

A gas water heater comprising: a gas pipeline; further comprises:

The gas flow sensor is arranged on the gas pipeline to detect the gas flow of the gas pipeline;

The proportional valve assembly is arranged on the gas pipeline to adjust the gas flow of the gas pipeline;

And the control board is electrically connected with the air flow sensor and the proportional valve assembly to acquire the air flow of the gas pipeline and the opening degree or the current value of the proportional valve assembly.

The gas water heater of the utility model comprises: the gas flow sensor comprises a gas pipeline, a gas flow sensor, a proportional valve assembly and a control panel; the gas flow sensor is arranged on the gas pipeline to detect the gas flow of the gas pipeline; the proportional valve assembly is arranged on the gas pipeline to adjust the gas flow of the gas pipeline; the control panel is electrically connected with the gas flow sensor and the proportional valve assembly to obtain the gas flow of the gas pipeline and the opening or current value of the proportional valve assembly, so that the type of the gas consumed by the gas water heater can be determined according to the gas flow of the gas pipeline and the opening or current value of the proportional valve assembly. Compared with the background technology, the beneficial effects are that: the utility model can effectively reduce the accumulated error and reduce the risk of erroneous judgment of the control panel. Therefore, the gas water heater provided by the embodiment of the utility model provides a hardware architecture, and the risk of misjudging the gas type by the control panel can be reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a gas water heater according to the prior art;

FIG. 2 is a schematic diagram of a gas water heater according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a gas water heater according to another embodiment of the present application;

FIG. 4 is a schematic diagram of a gas water heater according to another embodiment of the present application;

fig. 5 is a schematic structural diagram of a gas water heater according to another embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

Gas water heater: for heating water to provide a hot water supply for homes, hotels, apartments and other locations. The gas water heater generates heat energy by burning gas and then transfers the heat energy to water flow through the heat exchanger, thereby heating up cold water. The gas water heater is controlled to ignite by a water flow sensor or a chip, and the temperature is continuously changed in the process of heating water. Compared with the traditional electric water heater, the gas water heater has the following advantages: a) And (3) rapid heating: the gas water heater uses gas to heat, has high heating speed and can provide hot water in a short time. b) High efficiency: the gas water heater has high heat efficiency, can convert the energy of gas into heat energy, and is relatively energy-saving. c) The cost is saved: the price of the fuel gas is relatively low, and the use cost can be saved by using the fuel gas water heater. d) The hot water quantity is large: the gas water heater has large hot water quantity and can meet the requirements of household use.

Fig. 1 is a schematic diagram of a gas water heater according to the prior art. As shown in fig. 1, the existing gas water heater may include: the device comprises a control panel, a water flow sensor, a heat exchanger, a water inlet temperature probe, a water outlet temperature probe, a proportional valve assembly, a gas distributing lever assembly, a burner assembly, a fan assembly and a smoke collecting hood assembly.

Wherein, the control panel is the important component part in charge of controlling the operating condition of the gas water heater. The control board mainly comprises a chip, a circuit board, a capacitor, a resistor, a switch, a display screen and the like. The control panel of the gas water heater can realize the functions of automatic ignition, temperature control, gas valve control, fault detection, display and the like. Meanwhile, the system can set parameters such as hot water temperature, time and the like according to the requirements of users, so that the gas water heater works more intelligently and conveniently. If the control panel of the gas water heater fails, the gas water heater can not work normally, can not adjust the temperature, can not ignite, and the like. At this time, the control panel needs to be maintained or replaced in time so as to ensure the normal operation and safe use of the gas water heater.

The water flow sensor can realize the function of measuring flow through two modes of triggering type and non-triggering type. The trigger type water flow sensor needs to be provided with a light touch point in the fluid pipeline, and when fluid flows through the touch point, the touch point can be ejected, and the change of the flow is sensed through a circuit or an external device. The non-triggering type water flow sensor utilizes the electromagnetic induction principle, so that the function of measuring flow is realized by measuring the induced electromotive force when fluid flows through the conductive pipeline.

A heat exchanger is a component that transfers heat generated by combustion of gas in a gas water heater into water. When water flows from the faucet through the heat exchanger, the metal shell in the heat exchanger transfers heat from the combustion to the water passing through the center of the shell. Thus, the heating function of the gas water heater can be realized. The heat exchanger is typically made of a durable metallic material, such as copper or stainless steel, to ensure long-term stable operation thereof.

The water inlet temperature probe and the water outlet temperature probe are sensors for measuring the temperature of water in the gas water heater. The inlet water temperature probe measures the temperature of cold water entering the gas combustion device, and the outlet water temperature probe measures the temperature of hot water exiting the gas combustion device. The probes can read temperature data through an electrical system inside the gas combustion equipment, and can be matched with other protection functions such as overheat protection, water level protection and the like to ensure the safety and the normal operation of the gas water heater.

The proportional valve assembly is a key component for controlling the mixing ratio of the fuel gas and the air and ensuring the combustion stability and the safety. The valve mainly comprises a valve core, a valve seat, a spring, a connecting piece and the like, and the electronic control integrated circuit sends out signals to control the opening and closing of the valve so as to control the mixed gas. The design requirements of the proportional valve assembly are very high, not only are performance indexes met, but also a plurality of strict safety tests are required to pass.

The gas dividing bar assembly is used for distributing and adjusting the flow of the gas and ensuring the normal operation of the gas water heater. It is usually composed of a gas-dividing rod, a positioning block, a nut, a spring, etc. The gas dividing bar assembly has the function of distributing the fuel gas into different nozzles to enable the flame to burn uniformly, and simultaneously controlling the flow of the fuel gas by adjusting the position of the gas dividing bar, thereby controlling the temperature of the fuel gas water heater. If the gas distribution bar assembly malfunctions or is damaged, the gas water heater may not work properly or create safety problems, so that the state of the gas distribution bar assembly needs to be paid attention to when the gas water heater is maintained and used.

The burner assembly is a device which mixes fuel such as natural gas or liquefied petroleum gas with air, ignites the fuel in the gas combustion device, generates high-temperature flame and heats hot water of the gas combustion device. The device consists of a burner head, an electrode, an ignition coil, an ignition electrode and other parts, as well as a gas valve, an air door, an air path controller and other accessories. When the gas water heater is used, the working efficiency and performance of the burner assembly directly influence the heating speed, the temperature regulation precision and the like of the gas water heater, so that the quality and maintenance of the burner assembly are also very important.

The fan assembly is an important component for mixing the fuel gas and air of the fuel gas water heater and sending the mixed gas into the bottle body for combustion. It is composed of motor, impeller, supporter and other auxiliary devices. The operation of the fan assembly can generate certain wind noise, and has important influence on the performance, combustion efficiency, power, noise and the like of the gas water heater. If the fan assembly fails, the fan assembly needs to be maintained or replaced in time, otherwise, the gas water heater can not work normally, dangers and gas waste can be caused.

The fume collecting hood assembly is one integral fume collecting device with several parts and has the main function of collecting waste fume and fume from the burning part to ensure that the fume and fume are exhausted to outside and to avoid negative effect on indoor air and human health. The fume collection hood assembly typically includes a number of key components such as a gas main body, heat exchanger, flue, gas valve, circuit board, etc., the cooperation of which is critical to the proper operation and user experience of the gas water heater.

Example 1

Fig. 2 is a schematic structural diagram of a gas water heater according to an embodiment of the present application. As shown in fig. 2, the gas water heater according to the embodiment of the present application may include: a gas pipe 201; may further include: an air flow sensor 202, a proportional valve assembly 203, and a control board 204; wherein,

The gas flow sensor 202 is provided on the gas pipe 201 to detect the gas flow of the gas pipe 201;

the proportional valve assembly 203 is arranged on the gas pipeline 201 to adjust the gas flow 201 of the gas pipeline;

The control board 204 is electrically connected with the air flow sensor 202 and the proportional valve assembly 203 to obtain the air flow of the gas pipeline 201 and the opening degree or the current value of the proportional valve assembly 203, and can determine the type of the gas consumed by the gas combustion device at the current moment according to the air flow of the gas pipeline 201 and the opening degree or the current value of the proportional valve assembly 203. The utility model can effectively reduce the accumulated error and reduce the risk of erroneous judgment of the control panel 204. Therefore, the gas water heater provided by the embodiment of the utility model provides a hardware architecture, and the risk of misjudging the gas type by the control panel can be reduced.

In one embodiment, the airflow sensor 202 is located at the air intake end of the proportional valve assembly 203. The gas flow sensor is a sensor for measuring the gas flow and is arranged on a gas pipeline of the gas water heater to detect the gas flow of the gas pipeline. The working principle of the device is based on the principle of a thermal flowmeter, and the flow of the fluid is determined by measuring the reduction degree of heat on the probe taken away by the fluid when the fluid passes through the probe. Specifically, the air flow sensor operates as follows: 1) Heating probe: by heating a small conductor to a temperature higher than the temperature of the flowing medium, and then allowing the conductor to dissipate heat, the temperature of the conductor is reduced. 2) Measurement of heat loss: as the air flows through the heated probe, it takes away heat from the probe, causing the probe temperature to drop. This reduced amount of temperature may reflect the magnitude of the flow of the gas. 3) And (3) outputting a signal: the sensor converts the output signal of the probe into an electrical signal, and then processes the electrical signal through an external circuit to finally output an electrical signal proportional to the gas flow. In summary, the air flow sensor works on the principle that the probe head is used to measure the amount of air flow by heat loss in the air flow.

In an embodiment of the present application, the control board 204 may obtain the air flow of the gas pipeline 201 and the opening or current value of the proportional valve assembly 203 in the case of stable combustion of the gas water heater.

The combustion stability of the gas water heater can be obtained by comparing the fluctuation value of the outlet water temperature of the gas water heater with a preset fluctuation range, and if the fluctuation value of the outlet water temperature of the gas water heater is in the preset fluctuation range, the gas water heater is in a stable combustion state.

In addition, the combustion stability of the gas water heater can be obtained according to the water outlet temperature of the gas water heater and the user set temperature, and if the difference value between the water outlet temperature of the gas water heater and the user set temperature is within a preset deviation range, the gas water heater is in a stable combustion state.

In one embodiment, the control board 204 may determine the current load of the gas water heater according to the current opening or current value of the proportional valve assembly 203. The embodiment of the application can pre-construct the corresponding relation between the opening degree of the proportional valve assembly 203 and the load of the gas water heater. In general, the larger the opening of the proportional valve assembly 203 is, the heavier the load of the gas water heater is; the smaller the opening of the proportional valve assembly 203, the lighter the load of the gas water heater. In addition, the opening of the proportional valve assembly 203 is also proportional to the flow rate of the standard gas and the lifted flame gas. The larger the opening of the proportional valve assembly 203 is, the larger the air flow of the standard gas and the lifted flame gas is; the smaller the opening of the proportional valve assembly 203, the smaller the standard gas and lifted flame gas flow rates. For example, when the opening degree of the proportional valve assembly 203 is 100%, the standard gas flow rate is 11.83L/min; the flow rate of the lifted flame gas was 13.83L/min. When the opening degree of the proportional valve assembly 203 is 50%, the standard gas flow rate is 6L/min; the flow rate of the lifted flame gas was 7.17L/min. When the opening degree of the proportional valve assembly 203 is the minimum opening degree, the air flow rate of the standard air is 3.67L/min; the flow rate of the lifted flame gas was 4.5L/min.

In an embodiment, the control board 204 may further determine a load section where the gas water heater is located according to a current load of the gas water heater, determine whether the gas flow of the gas pipeline 201 is within a first gas flow interval corresponding to the load section, and if the gas flow of the gas pipeline 201 is within the first gas flow interval, the control board 204 may identify that the type of the gas consumed by the gas water heater at the current moment is the first gas; if the gas flow of the gas pipeline 201 does not belong to the first gas flow interval, the control board 204 can identify that the type of the gas consumed by the gas water heater at the current time is the second gas.

In an embodiment, if the current load of the gas water heater is the preset load, the control board may further determine whether the gas flow of the gas pipeline 201 is within a second gas flow interval corresponding to the preset load, and if the gas flow of the gas pipeline 201 is within the second gas flow interval, the control board 204 may identify that the type of the gas consumed by the gas water heater at the current time is the first gas; if the gas flow of the gas pipeline 201 does not belong to the second gas flow interval, the control board 204 can identify that the type of gas consumed by the gas water heater at the current time is the second gas. Specifically, the preset load in the embodiment of the present application may include: a maximum preset load and a minimum preset load. If the current load of the gas water heater is the maximum preset load, the control board 204 can determine whether the gas flow of the gas pipeline 201 is within a second gas flow interval a corresponding to the maximum preset load, and if the gas flow of the gas pipeline 201 is within the second gas flow interval a corresponding to the maximum preset load, the control board 204 identifies that the type of the gas consumed by the gas water heater at the current moment is the first gas; if the gas flow of the gas pipeline 201 does not belong to the second gas flow interval a corresponding to the maximum preset load, the control board 204 recognizes that the type of the gas consumed by the gas water heater at the current time is the second gas. Likewise, if the current load of the gas water heater is the minimum preset load, the control board 204 may determine whether the gas flow of the gas pipeline 201 is within the second gas flow interval b corresponding to the minimum preset load, and if the gas flow of the gas pipeline 201 is within the second gas flow interval b corresponding to the minimum preset load, the control board 204 identifies that the type of the gas consumed by the gas water heater at the current moment is the first gas; if the gas flow of the gas pipeline 201 does not belong to the second gas flow interval b corresponding to the minimum preset load, the control board 204 can identify that the type of the gas consumed by the gas water heater at the current time is the second gas.

The first gas in the embodiment of the application may be a lifted flame gas, and the second gas may be a standard gas. The standard gas and the lifted flame gas in the gas water heater have different effects in use. In general, standard gas refers to a gas with relatively high calorific value, also called blue flame, which is a flame with a blue color that blinks on a stove. Gas water heaters using standard gas have a blue flame instantaneously when ignited, but may gradually become orange in color with increasing heating time, and the combustion effect may be relatively poor. The lifted flame gas is characterized in that the color of the flame is near yellow or even red, and the heat value is low, and the lifted flame gas is also called red flame. The gas water heater using the flame gas gradually turns orange in the heating process, then gradually turns blue, and the combustion effect is slightly inferior to that of the standard gas.

The gas water heater of the utility model comprises: a gas pipeline 201, a gas flow sensor 202, a proportional valve assembly 203 and a control panel 204; wherein, the air flow sensor 202 is arranged on the gas pipeline 201 to detect the air flow of the gas pipeline 201; the proportional valve assembly 203 is arranged on the gas pipeline 201 to adjust the gas flow of the gas pipeline 201; the control board 204 is electrically connected with the gas flow sensor 202 and the proportional valve assembly 203 to obtain the gas flow of the gas pipeline 201 and the opening degree or the current value of the valve assembly 203, and can determine the type of the gas consumed by the gas combustion device at the current moment according to the gas flow of the gas pipeline 201 and the opening degree or the current value of the proportional valve assembly 203. The utility model can effectively reduce the accumulated error and reduce the risk of erroneous judgment of the control panel. It can be seen that the gas water heater according to the embodiment of the present utility model provides a hardware architecture, which can reduce the risk of the control board 204 judging the gas type.

Example two

Fig. 3 is a schematic structural diagram of a gas water heater according to another embodiment of the present application. As shown in fig. 3, the gas water heater in the embodiment of the present application may further include: a combustion chamber 205 and a burner assembly 206, the burner assembly 206 being provided in the combustion chamber 205, the inlet end of the burner assembly 206 being in communication with the outlet end of the gas conduit 201. Regulating gas flow in a gas pipeline

The combustion chamber 205 refers to a region where combustion is performed in the gas water heater. It is usually composed of metallic materials, with specific structure and design to ensure safe and efficient combustion of gas. The combustion chamber 205 generally comprises: 1) A burner: the burner is a critical component in the combustion chamber, which is responsible for mixing and igniting the gas with air, producing the heat energy required in the combustion process. 2) A combustion chamber wall: the wall of the combustion chamber is an outer wall surface of the combustion chamber, and the wall is required to have the characteristics of high temperature resistance, heat insulation, corrosion resistance and the like so as to ensure the normal operation of the combustion chamber and prolong the service life. 3) Air duct and air inlet: the combustion chamber needs to introduce external fresh air through an air duct and an air inlet, and mix with fuel gas for combustion to form high-temperature combustion gas. 4) And (3) a discharge flue: the flue gas generated in the combustion chamber needs to be exhausted outside the chamber through the exhaust flue to prevent excessive harmful gases and combustion products from accumulating in the chamber. The combustion chamber of the gas water heater is directly related to the safety and the thermal efficiency of the gas water heater. Gas water heater

The burner assembly 206 functions to direct the combustion gas into the combustion chamber 205, ignite the gas by the ignition system, produce a flame and heat the water of the combustion chamber 205, and maintain combustion stability. During operation of the gas water heater, the burner assembly 206 controls the temperature of the hot water by controlling the supply of gas and adjusting the flame size. The combustion chamber 205 and burner assembly 206 are core components of the gas water heater, affecting the thermal efficiency and the service life of the combustion apparatus.

Example III

Fig. 4 is a schematic structural diagram of a gas water heater according to another embodiment of the present application. As shown in fig. 4, the gas water heater in the embodiment of the present application may further include: the fan assembly 207, fan assembly 207 and control board 204 electricity are connected, and the air outlet of fan assembly 207 communicates with combustion chamber 205.

In one embodiment, if the type of gas consumed by the gas water heater at the current time is the first gas, the control board 204 may control the rotational speed of the fan assembly 207 to be a predetermined rotational speed.

In an embodiment, the control board 204 may also control the rotation speed of the fan assembly 207 according to the type of gas consumed by the gas water heater at the current moment and the current flow rate of the gas water heater; or the rotating speed of the fan assembly 207 is controlled according to the type of the gas consumed by the gas water heater at the current moment and the current opening of the proportional valve assembly 203; or the rotational speed of the fan assembly 207 is controlled according to the type of gas consumed by the gas water heater at the current moment and the current value of the proportional valve assembly 203.

In one embodiment, the gas water heater further comprises a water inlet 208, a water outlet 209, and a heat exchanger 210; the heat exchanger 210 includes a heat exchange water pipe 2101, one end of the heat exchange water pipe 2101 is communicated with the water inlet pipe 208, the other end is communicated with the water outlet pipe 209, and the heat exchanger 210 is arranged above the combustion chamber 205.

In the above embodiment, the water inlet pipe 208 is provided with the water inlet temperature probe 211, and the water inlet temperature probe 211 is electrically connected with the control board 204.

In the above embodiment, the water outlet pipe 209 is provided with the water outlet temperature probe 212, and the water outlet temperature probe 212 is electrically connected to the control board 204.

In one embodiment, the gas water heater further comprises a sub-cylinder assembly 213, wherein the gas inlet end of the sub-cylinder assembly 213 is in communication with the gas outlet end of the gas conduit 201, and the gas outlet end of the sub-cylinder assembly 213 is in communication with the gas inlet end of the burner assembly 206.

In one embodiment, the gas water heater further comprises an integrated hood assembly 214, the integrated hood assembly 214 is disposed above the heat exchanger 210, and an air outlet is disposed at the top of the integrated hood assembly 214.

Example IV

Fig. 5 is a schematic structural view of a gas combustion apparatus according to another embodiment of the present application. As shown in fig. 5, the gas water heater according to the embodiment of the present application may include: the device comprises a control panel, a water flow sensor, a heat exchanger, a water inlet temperature probe, a water outlet temperature probe, a proportional valve assembly, a gas distributing lever assembly, a burner assembly, a fan assembly, a smoke collecting cover assembly and a gas flow sensor.

Under the condition that the opening degree of the proportional valve assembly is constant and the nozzles of the air dividing bar assembly are unchanged, the standard air flow and the flame gas flow are different, and the standard air flow and the flame gas flow can be identified by the air flow sensor through the difference point, so that the output air quantity of the fan assembly is controlled.

When a user opens the water valve, water passes through the water flow sensor, the water flow sensor detects a water signal, the water signal is transmitted to the control board, the control board controls the fan assembly to clean before starting, then controls the pulse igniter to start ignition, and controls the proportional valve assembly to open the valve; after ignition is successful, the burner assembly transmits flame signals to the control board, and the control board maintains the proportional valve assembly to open the valve, so that the gas water heater can burn stably. Meanwhile, the control board controls the rotating speed of the fan assembly according to the load of the gas water heater at the current moment and the air flow consumed by the gas water heater at the current moment and detected by the air flow sensor.

1. Case 1:

And the control board judges that the load of the gas water heater at the current moment is the maximum load according to the real-time working state of the gas water heater. Further, when the gas flow sensor detects that the gas flow consumed by the gas water heater at the current moment is in the flow interval a of the lifted flame gas, the control panel recognizes that the type of the gas consumed by the gas water heater at the current moment is the lifted flame gas. Further, the control board controls the fan assembly to adjust the wind speed to a set value c.

2. Case 2:

And the control board judges that the load of the gas water heater at the current moment is the minimum load according to the real-time working state of the gas water heater. Further, when the gas flow sensor detects that the gas flow consumed by the gas water heater at the current moment is in the flow interval b of the lifted flame gas, the control panel recognizes that the type of the gas consumed by the gas water heater at the current moment is the lifted flame gas. Further, the control board controls the fan assembly to adjust the wind speed to a set value d.

3. Case 3:

The control board judges that the load of the gas water heater at the current moment is between the maximum load and the minimum load according to the real-time working state of the gas water heater, and the control board controls the rotating speed of the fan assembly according to the current of the proportional valve assembly at the current moment. The specific software setting mode is as follows: dividing n current gears between the maximum load current and the minimum load current of the proportional valve assembly, sequentially corresponding to different load sections, wherein each current gear is matched with the corresponding rotating speed of the fan assembly, namely, the n current gears are linearly related to the n fan rotating speeds, so that a linear curve is formed, the gas water heater can fully burn under different loads, and the normal operation of the gas water heater is ensured.

4. Case 4:

The control board judges that the load of the gas water heater at the current moment is the maximum load according to the real-time working state of the gas water heater, but the gas flow sensor detects that the gas flow consumed by the gas water heater at the current moment is out of the flow interval a of the flame gas; or judging that the load of the gas water heater at the current moment is the minimum load, and if the gas flow sensor detects that the gas flow consumed by the gas water heater at the current moment is out of the flow interval b of the flame gas, the control board controls the rotating speed of the fan assembly according to the current of the proportional valve assembly at the current moment.

The embodiment of the application reduces a plurality of high-precision sensors into one sensor, can effectively reduce accumulated errors, reduces the risk of misjudgment of a control panel and ensures the performance of the whole machine. The logic algorithm in the embodiment of the application is simpler, the control value mode is more direct, the operation time of a control board is saved, and the response speed of the fan assembly is accelerated.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing detailed description of the embodiments presents only a few embodiments of the present utility model, which are described in some detail and are not intended to limit the scope of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A gas water heater comprising: a gas pipeline; the method is characterized in that: further comprises:

2. The gas water heater as recited in claim 1, wherein: the air flow sensor is positioned at one end of the air inlet of the proportional valve assembly.

3. The gas water heater as recited in claim 2, wherein: the gas water heater further comprises:

the burner assembly is arranged in the combustion chamber, and the air inlet end of the burner assembly is communicated with the air outlet end of the gas pipeline.

4. A gas water heater as claimed in claim 3, wherein: the gas water heater further comprises:

The fan assembly is electrically connected with the control board, and an air outlet of the fan assembly is communicated with the combustion chamber.

5. The gas water heater as recited in claim 4, wherein: the gas water heater also comprises a water inlet pipe, a water outlet pipe and a heat exchanger;

The heat exchanger comprises a heat exchange water pipe, one end of the heat exchange water pipe is communicated with the water inlet pipe, the other end of the heat exchange water pipe is communicated with the water outlet pipe, and the heat exchanger is arranged above the combustion chamber.

6. The gas water heater as recited in claim 5, wherein: the water inlet pipe is provided with a water inlet temperature probe which is electrically connected with the control board.

7. The gas water heater as recited in claim 5, wherein: the water inlet pipe is provided with a water flow sensor, and the water flow sensor is electrically connected with the control board.

8. The gas water heater as recited in claim 5, wherein: the water outlet pipe is provided with a water outlet temperature probe which is electrically connected with the control board.

9. A gas water heater as claimed in claim 3, wherein: the gas water heater further comprises a sub-cylinder assembly, the air inlet end of the sub-cylinder assembly is communicated with the air outlet end of the gas pipeline, and the air outlet end of the sub-cylinder assembly is communicated with the air inlet end of the combustor assembly.

10. The gas water heater as recited in claim 5, wherein: the gas water heater further comprises an integrated cover assembly, the integrated cover assembly is arranged above the heat exchanger, and an air outlet is formed in the top of the integrated cover assembly.