Control method of gas clothes dryer

Abstract

The invention relates to the field of fuel gas dryers, in particular to a control method of a fuel gas clothes dryer, which comprises the following steps that: step 1, a power supply is turned on, a temperature sensor is turned on, and the temperature sensor is used for detecting the temperature in a barrel, the temperature of an air inlet, the temperature of an air outlet and a selection mode; 2, a fire grate is started, a drying stage is started, three conditions of fire closing, single-row fire and double-row fire are switched according to a sensing value of a temperature sensor, and after the preset time of the drying stage is completed, the next step 3 is executed; step 3, if the dryness is not judged, carrying out step 4; or judging dryness according to the temperature in the barrel and / or the temperature of the air outlet, and executing the step 4; and step 4, turning off the fire, carrying out delayed drying or not, cooling, and ending. The control method of the fuel gas clothes dryer has the advantages that the two fire grates which are independently controlled are included, and after one fire grate is damaged, the other fire grate can still be used.

Description

Technical Field

[0001] This invention relates to the field of gas-fired dryers, and in particular to a control method for a gas-fired clothes dryer. Background Technology

[0002] Existing technologies disclose gas dryers. For example, Chinese patent application CN107245863A discloses "an ignition control system for a gas dryer and a gas dryer having the same". By setting a temperature detection switch, the ignition needle and the gas valve can be controlled by the temperature detection switch to realize the ignition process of the ignition control system.

[0003] For example, patent publication number KR101308636B1 discloses a "control method for a gas-fired dryer". This method controls the opening of a proportional valve based on the temperature change of the exhaust air during the operation of a gas-fired clothes dryer, thereby controlling the amount of combustion.

[0004] Existing technology controls the gas intake through a proportional valve. The problem is that if the proportional valve is damaged, the temperature of the gas dryer cannot be controlled, and the gas dryer will not work. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the purpose of this invention is to provide a gas dryer, which includes two separately controlled burners, so that if one burner is damaged, the other can still be used.

[0006] The technical solution adopted by this invention to solve the problem is: a control method for a gas-fired clothes dryer, wherein the gas-fired clothes dryer includes two burners, comprising: Step 1: Turn on the power. The temperature sensor will turn on. The temperature sensor is used to detect the temperature inside the tank, the air inlet temperature, and the air outlet temperature. Select the mode. Step 2: Turn on the heat exchanger to start the drying stage. Switch between three modes: off, single heat exchanger, and double heat exchanger, based on the temperature sensor reading. After the preset drying time is completed, proceed to the next step, Step 3. Step 3: If the condition is not deemed dry, proceed to Step 4; or, if the condition is deemed dry based on the temperature inside the container and / or the temperature at the air outlet, proceed to Step 4. Step 4: Turn off the heat, allow the product to dry for an extended period (or not) and then allow it to cool. End of step.

[0007] As a further improvement to the above technical solution, step one includes six drying modes, namely, quick, warm clothes, fine clothes, normal, thick clothes, and timed.

[0008] As a further improvement to the above technical solution, in step two, in the rapid and warm clothing modes, if the temperature inside the bucket does not rise to or fall to 65°, then double-row fire is used; if the temperature inside the bucket rises to 75°, single-row fire is used; if the temperature inside the bucket is higher than 80°, then the fire is turned off. In step two, under the fine-fine mode, if the temperature inside the barrel is higher than 60°, the fire is turned off; if the temperature inside the barrel does not rise to or fall to 51°, a single-row fire is used. In step two, under normal mode, if the temperature inside the barrel does not rise to or fall to 65°C within the first 30 minutes, a double-row flame is used; if the temperature inside the barrel is higher than 72°C, the flame is turned off. After 30 minutes, if the temperature inside the barrel does not rise to or fall to 72°C, a double-row flame is used; if the temperature inside the barrel is higher than 78°C, the flame is turned off. In step two, under the thick clothing mode, if the temperature inside the bucket does not rise to or fall to 68°C within the first 30 minutes, use dual-row flames; if the temperature inside the bucket is higher than 75°C, turn off the flames. After 30 minutes, if the temperature inside the bucket does not rise to or fall to 74°C, use dual-row flames; if the temperature inside the bucket is higher than 80°C, turn off the flames.

[0009] As a further improvement to the above technical solution, in step two, under the timer mode, except for the 105-minute setting, if the temperature inside the barrel does not rise to or fall to 65°, then double-row flame is used; if the temperature inside the barrel rises to 75°, single-row flame is used; if the temperature inside the barrel is higher than 80°, then the flame is turned off. In the timer mode, several time settings can be set. In step two, in the timer mode, for the 105-minute setting, if the temperature inside the barrel does not rise to or fall to 55°C within the first 30 minutes, dual-row flame is used; if the temperature inside the barrel is higher than 60°C, the flame is turned off. From 30 to 50 minutes, if the temperature inside the barrel does not rise to or fall to 61°C, dual-row flame is used; if the temperature inside the barrel is higher than 66°C, the flame is turned off. From 50 to 70 minutes, if the temperature inside the barrel does not rise to or fall to 67°C, dual-row flame is used; if the temperature inside the barrel is higher than 73°C, the flame is turned off. From 70 to 100 minutes, if the temperature inside the barrel does not rise to or fall to 73°C, dual-row flame is used; if the temperature inside the barrel is higher than 80°C, the flame is turned off.

[0010] As a further improvement to the above technical solution, in step two, if the outlet temperature does not rise to or fall to 60°, a single-row flame is used; if the outlet temperature is higher than 78°, the flame is turned off. In step two, if the air inlet temperature does not rise to or fall to 90°, then dual-row flame is used; if the air inlet temperature is higher than 135°, then the flame is turned off.

[0011] As a further improvement to the above technical solution, in step two, after each time the flame is turned off, wait 1 minute before judging whether the flame-on temperature has been reached. If the ignition is turned off due to the air inlet temperature reaching the shutdown condition, it cannot be reignited within 18 seconds. In step two, the fire is turned off when any one of the following conditions is met: the temperature inside the barrel, the temperature at the air outlet, or the temperature at the air inlet.

[0012] As a further improvement to the above technical solution, in step three, the fast and warm clothing modes are not judged for drying, while the other modes are judged for drying. In step four, there are two modes: quick and warm clothes, with no delay, and the cooling stages are 3 minutes and 2 minutes respectively.

[0013] As a further improvement to the above technical solution, in step three, the condition for determining dryness is that the temperature inside the drum drops to 52°C in the fine mode, and the condition for determining dryness is that the temperature inside the drum drops to 65°C or the temperature at the air outlet is greater than 62°C in the general and thick modes.

[0014] As a further improvement to the above technical solution, in step three, when the timed program mode reaches 105 minutes, a forced stop condition is added: if the temperature inside the barrel minus the temperature at the air outlet is less than 10°C and the temperature at the air outlet is greater than 61°C, then drying is judged once. After 8 consecutive drying judgments, drying is completed. Then, the drying is delayed for [(remaining time - 5) / 2] minutes before cooling, and the process ends. If the remaining time is ≤ 5 minutes, a forced stop is not required, and the remaining time is directly run. In step three, if the timed forming mode is not 105 minutes, drying is not judged.

[0015] The beneficial effects of this invention are: it allows setting high-temperature and low-temperature thresholds for the drum temperature, air inlet temperature, and air outlet temperature; when the high-temperature threshold is reached, the dryer is shut off; when the temperature drops to the low-temperature threshold, it switches to either dual-row or single-row fire. During the drying stage, the dryer can repeatedly switch between these three modes: shut-off, single-row fire, and dual-row fire. Each of the two fire rows is connected to a control valve to control the air intake; even if one fire row is damaged, the dryer can still be used. Attached Figure Description

[0016] The present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a diagram illustrating the control method of the present invention. Detailed Implementation

[0018] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0022] Reference Figure 1 A control method for a gas-fired clothes dryer, the gas-fired clothes dryer comprising two burners: Step 1: Turn on the power, activate the temperature sensor, the temperature sensor is used to detect the temperature inside the drum, the temperature at the air inlet, and the temperature at the air outlet, and select the mode; Step 2: Activate the burners to start the drying stage, switching between three states: off, single burner, and dual burner, based on the temperature sensor readings. After the preset drying time is completed, proceed to the next step, Step 3; Step 3: Do not determine if the clothes are dry, proceed to Step 4; or, determine if the clothes are dry based on the temperature inside the drum and / or the temperature at the air outlet, and execute Step 4; Step 4: Delay drying or not delay, perform cooling, and end.

[0023] In step two, high-temperature and low-temperature thresholds can be set for the drum temperature, inlet temperature, and outlet temperature. When the high-temperature threshold is reached, the heat is turned off; when the temperature drops to the low-temperature threshold, the system switches to either dual-row or single-row heating. During the drying stage, the system can repeatedly switch between these three modes. In step three, based on the user-selected drying mode, it can be determined whether to perform a final drying check. Performing a check results in longer drying time before the end of the process, while not performing a check results in shorter drying time before the end.

[0024] In a preferred embodiment, step one includes six drying modes, namely quick, warm clothes, fine clothes, normal, thick clothes, and timed.

[0025] In a preferred embodiment, in step two, under both the rapid and warming modes, if the temperature inside the tub does not rise to or fall to 65°C, a double-row flame is used; if the temperature inside the tub rises to 75°C, a single-row flame is used; and if the temperature inside the tub exceeds 80°C, the flame is turned off. In step two, under the finer mode, if the temperature inside the tub exceeds 60°C, the flame is turned off; if the temperature inside the tub does not rise to or fall to 51°C, a single-row flame is used. In step two, under the normal mode, if the temperature inside the tub does not rise to or fall to 65°C within the first 30 minutes... 5°C, using dual-row flame, if the temperature inside the container exceeds 72°C, turn off the flame; after 30 minutes, if the temperature inside the container does not rise to or fall to 72°C, use dual-row flame, if the temperature inside the container exceeds 78°C, turn off the flame; in step two, in thick clothing mode, if the temperature inside the container does not rise to or fall to 68°C within the first 30 minutes, use dual-row flame, if the temperature inside the container exceeds 75°C, turn off the flame; after 30 minutes, if the temperature inside the container does not rise to or fall to 74°C, use dual-row flame, if the temperature inside the container exceeds 80°C, turn off the flame.

[0026] In a preferred embodiment, in step two, under timer mode, except for the 105-minute setting, if the temperature inside the barrel does not rise to or fall to 65°C, double-row flame is used; if the temperature inside the barrel rises to 75°C, single-row flame is used; and if the temperature inside the barrel exceeds 80°C, the flame is turned off. In step two, under timer mode, several time settings can be set. For example, if the 105-minute setting is set, within the first 30 minutes, if the temperature inside the barrel does not rise to or fall to 55°C, double-row flame is used; if the temperature inside the barrel exceeds 60°C, the flame is turned off. From 30 to 50 minutes, if the temperature inside the barrel does not rise to or fall to 61°C, double-row flame is used; if the temperature inside the barrel exceeds 66°C, the flame is turned off. From 50 to 70 minutes, if the temperature inside the barrel does not rise to or fall to 67°C, double-row flame is used; if the temperature inside the barrel exceeds 73°C, the flame is turned off. From 70 to 100 minutes, if the temperature inside the barrel does not rise to or fall to 73°C, double-row flame is used; and if the temperature inside the barrel exceeds 80°C, the flame is turned off.

[0027] In a preferred embodiment, in step two, if the outlet temperature does not rise to or fall to 60°, a single-row flame is used; if the outlet temperature is higher than 78°, the flame is turned off. In step two, if the inlet temperature does not rise to or fall to 90°, a double-row flame is used; if the inlet temperature is higher than 135°, the flame is turned off.

[0028] In a preferred embodiment, after each time the fire is turned off in step two, wait 1 minute before determining whether the fire temperature has been reached; if the fire is turned off because the air inlet temperature has reached the fire-off condition, it cannot be reignited within 18 seconds; in step two, the fire is turned off if any one of the barrel temperature, the air outlet temperature, or the air inlet temperature reaches the fire-off condition.

[0029] In a preferred embodiment, in step three, the fast and warm clothing modes do not undergo drying tests, while the other modes do; in step four, the fast and warm clothing modes have no delay, and the cooling stages are 3 minutes and 2 minutes respectively.

[0030] In a preferred embodiment, in step three, the condition for determining dryness is that the temperature inside the drum drops to 52°C in the fine mode, and the condition for determining dryness is that the temperature inside the drum drops to 65°C or the temperature at the air outlet is greater than 62°C in the general and thick modes. In a preferred embodiment, in step three, when the timed program mode reaches 105 minutes, a forced stop condition is added: if the temperature inside the drum minus the temperature at the air outlet is less than 10°C and the temperature at the air outlet is greater than 61°C, then drying is judged once. After 8 consecutive drying judgments, drying is completed. Then, the drying is delayed for [(remaining time - 5) / 2] minutes before cooling, and the process ends. If the remaining time is ≤ 5 minutes, a forced stop is not required, and the remaining time is directly run. In step three, if the timed forming mode is not 105 minutes, drying is not judged.

[0031] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct or indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A control method for a gas-fired clothes dryer, wherein the gas-fired clothes dryer includes two burners, characterized in that, include: Step 1: Turn on the power. The temperature sensor will turn on. The temperature sensor is used to detect the temperature inside the tank, the air inlet temperature, and the air outlet temperature. Select the mode. Step 2: Turn on the heat exchanger to start the drying stage. Switch between three modes: off, single heat exchanger, and double heat exchanger, based on the temperature sensor reading. After the preset drying time is completed, proceed to the next step, Step 3. Step 3: If the condition is not deemed dry, proceed to Step 4; or, if the condition is deemed dry based on the temperature inside the container and / or the temperature at the air outlet, proceed to Step 4. Step 4: Turn off the heat, allow the product to dry for an extended period (or not) and then allow it to cool. End of step.

2. The control method for a gas-fired clothes dryer as described in claim 1, characterized in that: In step one, there are six drying modes, including quick, warm clothes, fine clothes, normal, thick clothes, and timed.

3. The control method for a gas-fired clothes dryer as described in claim 1, characterized in that: In step two, under both the rapid and warm clothing modes, if the temperature inside the bucket does not rise to or fall to 65°, then double-row flames are used; if the temperature inside the bucket rises to 75°, single-row flames are used; and if the temperature inside the bucket is higher than 80°, then the flames are turned off. In step two, under the fine-fine mode, if the temperature inside the barrel is higher than 60°, the fire is turned off; if the temperature inside the barrel does not rise to or fall to 51°, a single row of fire is used. In step two, under normal mode, if the temperature inside the barrel does not rise to or fall to 65°C within the first 30 minutes, a double-row flame is used; if the temperature inside the barrel is higher than 72°C, the flame is turned off. After 30 minutes, if the temperature inside the barrel does not rise to or fall to 72°C, a double-row flame is used; if the temperature inside the barrel is higher than 78°C, the flame is turned off. In step two, under the thick clothing mode, if the temperature inside the bucket does not rise to or fall to 68°C within the first 30 minutes, use dual-row flames; if the temperature inside the bucket is higher than 75°C, turn off the flames. After 30 minutes, if the temperature inside the bucket does not rise to or fall to 74°C, use dual-row flames; if the temperature inside the bucket is higher than 80°C, turn off the flames.

4. The control method for a gas-fired clothes dryer as described in claim 2, characterized in that: In step two, under timer mode, except for the 105-minute setting, if the temperature inside the barrel does not rise to or fall to 65°C, then double-row flame is used; if the temperature inside the barrel rises to 75°C, then single-row flame is used; if the temperature inside the barrel is higher than 80°C, then the flame is turned off. In the timer mode, several time settings can be set. In step two, in the timer mode, for the 105-minute setting, if the temperature inside the barrel does not rise to or fall to 55°C within the first 30 minutes, dual-row flame is used; if the temperature inside the barrel is higher than 60°C, the flame is turned off. From 30 to 50 minutes, if the temperature inside the barrel does not rise to or fall to 61°C, dual-row flame is used; if the temperature inside the barrel is higher than 66°C, the flame is turned off. From 50 to 70 minutes, if the temperature inside the barrel does not rise to or fall to 67°C, dual-row flame is used; if the temperature inside the barrel is higher than 73°C, the flame is turned off. From 70 to 100 minutes, if the temperature inside the barrel does not rise to or fall to 73°C, dual-row flame is used; if the temperature inside the barrel is higher than 80°C, the flame is turned off.

5. The control method for a gas-fired clothes dryer as described in claim 1, characterized in that: In step two, if the outlet temperature does not rise to or fall to 60°, a single-row flame is used; if the outlet temperature is higher than 78°, the flame is turned off. In step two, if the air inlet temperature does not rise to or fall to 90°, then dual-row flame is used; if the air inlet temperature is higher than 135°, then the flame is turned off.

6. A control method for a gas-fired clothes dryer as described in any one of claims 3-5, characterized in that: In step two, after each time you turn off the heat, wait 1 minute before determining whether the temperature has been reached for the start-up temperature. If the ignition is turned off due to the air inlet temperature reaching the shutdown condition, it cannot be reignited within 18 seconds. In step two, the fire is turned off when any one of the following conditions is met: the temperature inside the barrel, the temperature at the air outlet, or the temperature at the air inlet.

7. The control method for a gas-fired clothes dryer as described in claim 1, characterized in that: In step three, the fast and warm clothing modes are not judged for drying, while the other modes are judged for drying. In step four, there are two modes: quick and warm clothes, with no delay, and the cooling stages are 3 minutes and 2 minutes respectively.

8. The control method for a gas-fired clothes dryer as described in claim 7, characterized in that: In step three, the condition for determining dryness is that the temperature inside the drum drops to 52°C in the fine mode, and the condition for determining dryness is that the temperature inside the drum drops to 65°C or the temperature at the air outlet is greater than 62°C in the general and thick modes.

9. The control method for a gas-fired clothes dryer as described in claim 1, characterized in that: In step three, the timed program mode adds a forced stop condition when the timer reaches 105 minutes: if the temperature inside the drum minus the temperature at the air outlet is less than 10°C and the temperature at the air outlet is greater than 61°C, then the drying is judged once. After 8 consecutive drying judgments, the drying is completed. Then, the drying is delayed for [(remaining time - 5) / 2] minutes before cooling, and the process ends. If the remaining time is ≤ 5 minutes, there is no need for a forced stop, and the remaining time is directly run. In step three, if the timed molding mode is not 105 minutes, then it will not be judged as dry.

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