Method for controlling temperature in drum of clothes dryer

Abstract

The present invention belongs to the field of intelligent washing machines, and specifically provides a method for controlling the temperature in the drum of a clothes dryer. The present invention aims to solve the problem that existing clothes dryers cannot accurately determine whether to perform functions related to quick clothes retrieval. To this end, the control method of the present invention includes: starting the drying function after obtaining a drying instruction signal; obtaining the temperature in the drum and a safety protection temperature threshold; and controlling the temperature in the drum according to the temperature in the drum and the safety protection temperature threshold. The clothes dryer of the present invention is an intelligent clothes dryer, which can determine whether a quick clothes retrieval mode is required, that is, perform corresponding temperature control in the drum in different temperature ranges in the drum, wherein, when it is determined that quick clothes retrieval is required, the temperature in the drum is quickly controlled to an acceptable temperature range so that the user can quickly retrieve clothes.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent washing machines, and specifically provides a method for controlling the temperature in a drum of a clothes dryer. Background Art

[0002] With the development of technology, more and more types of washing machines have come into use, for example, clothes dryers, including washing machines with drying functions or clothes dryers with only drying functions. For example, in rainy weather or when time is tight, the clothes can be quickly dried by starting the drying function of the clothes dryer, thereby improving the user experience.

[0003] In daily life, users set the drying program on the dryer and then go about their lives. After setting the drying program, users sometimes want to get their clothes quickly, while sometimes they are not in a hurry to get their clothes. For example, during a break, they may be too focused on a movie or TV program and do not want to get their clothes quickly, or they may want to get their clothes quickly early in the morning on a weekday when they are busy going to work. However, the current drying function will cause the inside of the dryer to overheat, and it cannot be opened to protect the user. This may cause the dryer to fail to cool down the inside in time when the user wants to get the clothes quickly, resulting in a high temperature in the dryer drum and inability to get the clothes. Alternatively, the user may perform a quick drying and cooling operation when they do not want to get the clothes quickly, resulting in a waste of electricity.

[0004] Accordingly, the art requires a new method for controlling the temperature inside the drum of a clothes dryer to solve the problem that existing clothes dryers cannot accurately determine whether to perform functions related to quick clothing retrieval. Summary of the Invention

[0005] In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the existing dryer cannot accurately determine whether to perform the quick clothing retrieval related function, the present invention provides a method for controlling the temperature in the drum of a dryer, and the control method includes: starting the drying function after obtaining a drying instruction signal; obtaining the temperature in the drum and the safety protection temperature threshold; and controlling the temperature in the drum according to the temperature in the drum and the safety protection temperature threshold.

[0006] In the preferred technical solution of the above-mentioned method for controlling the temperature in the drum of the dryer, the step of "controlling the temperature in the drum according to the temperature in the drum and the safety protection temperature threshold" further includes: obtaining the current time; judging whether to send a manual operation consultation instruction signal based on the current time, the temperature in the drum and the safety protection temperature threshold; when the judgment result is to send a manual operation consultation instruction signal, sending a manual operation consultation instruction signal to the user, and controlling the temperature in the drum according to the result of the manual operation consultation instruction signal; wherein, the manual operation consultation instruction signal includes a temperature threshold selection instruction signal or a manual cooling instruction signal, and the safety protection temperature threshold is T1.

[0007] In the preferred technical solution of the above-mentioned method for controlling the temperature in the drum of the dryer, the step of "determining whether to send a manual operation consultation instruction signal based on the current time, the temperature in the drum and the safety protection temperature threshold" further includes: when it is detected that the current time is a holiday, and the temperature in the drum is T<T1, and a user terminal signal is detected, sending the manual operation consultation instruction signal.

[0008] In the preferred technical solution of the above-mentioned method for controlling the temperature in the drum of the dryer, the step of "sending a manual operation consultation instruction signal to the user, and controlling the temperature in the drum according to the result of the manual operation consultation instruction signal" further includes: sending a manual operation consultation instruction signal to the user; when the manual operation consultation instruction signal is received as the temperature threshold selection instruction signal, prompting the user to input the temperature threshold for taking clothes; when the temperature in the drum is ≤ the temperature threshold for taking clothes, sending a door opening signal to the user terminal.

[0009] In the preferred technical solution of the above-mentioned method for controlling the temperature in the drum of the dryer, the step of "sending a manual operation consultation instruction signal to the user, and controlling the temperature in the drum according to the result of the manual operation consultation instruction signal" further includes: sending a manual operation consultation instruction signal to the user; when the manual operation consultation instruction signal received is the manual cooling instruction signal, starting the cooling module.

[0010] In the preferred technical solution of the above-mentioned method for controlling the temperature inside the drum of the dryer, after the step of "starting the cooling module when the manual operation consultation instruction signal received is the manual cooling instruction signal", the control method also includes: when the temperature inside the drum is ≤ the preset temperature value, sending a door opening signal to the user terminal.

[0011] In the preferred technical solution of the above-mentioned method for controlling the temperature in the drum of the dryer, the step of "determining whether to send a manual operation consultation instruction signal based on the current time, the temperature in the drum and the safety protection temperature threshold" further includes: when the current time is the working hours on a weekday, the manual operation consultation instruction signal is not sent; or when the current time is a holiday and no user terminal is detected, the manual operation consultation instruction signal is not sent; or when the current time is within the preset time period before work on a weekday and the user terminal is detected to move frequently, the manual operation consultation instruction signal is not sent; or when the temperature in the drum T≥T1, the manual operation consultation instruction signal is not sent.

[0012] In the preferred technical solution of the above-mentioned method for controlling the temperature in the drum of the dryer, the step of "not sending the manual operation consultation instruction signal when the current time is the working time on a weekday" further includes: when the current time is the working time on a weekday, and when the temperature in the drum T is less than T1, the manual operation consultation instruction signal is not sent, and the automatic cooling instruction signal is not turned on.

[0013] In the preferred technical solution of the above-mentioned method for controlling the temperature in the drum of the dryer, the step of "not sending the manual operation consultation instruction signal when the temperature in the drum is T≥T1" further includes: when the temperature in the drum is T≥T1, not sending the manual operation consultation instruction signal, and turning on the automatic cooling instruction signal.

[0014] In the preferred technical solution of the above-mentioned method for controlling the temperature in the drum of the dryer, the step of "when the current time is a holiday and the user terminal is not detected, the manual operation consultation instruction signal is not sent" further includes: when the current time is a holiday and the user terminal is not detected, and when the temperature in the drum T is less than T1, the manual operation consultation instruction signal is not sent, and the automatic cooling instruction signal is not turned on; or the step of "when the current time is within the preset time period before work on a weekday and the user terminal is detected to move frequently, the manual operation consultation instruction signal is not sent" further includes: when the current time is within the preset time period before work on a weekday and the user terminal is detected to move frequently, the manual operation consultation instruction signal is not sent, and the automatic cooling instruction signal is turned on.

[0015] It can be understood by those skilled in the art that, in the technical solution of the present invention, the control method includes: starting the drying function after obtaining a drying instruction signal; obtaining the temperature inside the drum and the safety protection temperature threshold; and controlling the temperature inside the drum according to the temperature inside the drum and the safety protection temperature threshold.

[0016] Through the above-mentioned setting method, the dryer of the present invention controls the temperature in the drum through the temperature in the drum and the safety protection temperature threshold, and can determine whether the quick clothing retrieval mode is needed, that is, the corresponding drum temperature control is performed in different temperature ranges in the drum. Among them, when it is determined that quick clothing retrieval is required, the temperature in the drum is quickly controlled to an acceptable temperature range so that the user can quickly retrieve clothes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following describes the method for controlling the temperature in the drum of a clothes dryer according to the present invention with reference to the accompanying drawings.

[0018] Figure 1 Schematic diagram of the main steps of the method for controlling the temperature in the drum of a clothes dryer according to the present invention;

[0019] Figure 2 Schematic diagram of main steps of controlling the temperature in the drum of the clothes dryer according to the temperature in the drum and the safety protection temperature threshold of the clothes dryer of the present invention;

[0020] Figure 3 This is a schematic diagram of the main steps of the clothes dryer of the present invention in determining whether to send a manual operation consultation instruction signal based on the current time, the temperature in the drum and the safety protection temperature threshold;

[0021] Figure 4 This is a schematic diagram of the main steps of controlling the temperature in the drum of the clothes dryer according to the result of the manual operation consultation command signal of the present invention. DETAILED DESCRIPTION

[0022] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or element described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0024] like Figure 1As shown, in order to solve the problem that the existing clothes dryer cannot accurately determine whether to perform the quick clothes removal function, the control method of the present invention includes:

[0025] Step S1: Start the drying function after obtaining the drying instruction signal.

[0026] Among them, the obtained drying instruction signal can be a signal sent by the bottom plate of the dryer itself. For example, when the user selects the program of the washer-dryer, he selects the washing and drying mode. At this time, when the clothes in the washer-dryer are washed, the drying function mode is automatically entered. It can also be that the independent drying function is manually started by the user; or the dryer with a simple drying function is manually started.

[0027] Step S2: Obtain the temperature inside the cylinder and the safety protection temperature threshold.

[0028] The safety protection temperature threshold may be a factory-set threshold or an input threshold.

[0029] Step S3: Control the temperature inside the barrel according to the temperature inside the barrel and the safety protection temperature threshold.

[0030] like Figure 2 and Figure 3 As shown, step S3 of the present invention further includes the following steps.

[0031] Step S31: Get the current time.

[0032] Among them, the current time can be the time division set in advance by the user according to his or her actual situation. For example, the working days and rest days, as well as the working hours and off-get off work hours, can be set in advance according to the actual work, or the working days and rest days can be set by default according to statutory holidays.

[0033] Step S32: Determine whether to send a manual operation consultation instruction signal based on the current time, the temperature inside the cylinder, and the safety protection temperature threshold.

[0034] By judging the current time, the temperature inside the drum and the safety protection temperature threshold, it is possible to judge people's daily life and work scenes, accurately understand the actual needs of users, and realize specific clothing retrieval function modes in specific scenes, and realize intelligent judgment of the dryer. Among them, in the case of no manual operation consultation command signal, the user does not need to make a selection judgment, thereby realizing the automatic control of the temperature inside the drum by the dryer. In the case of needing to send a manual operation consultation command signal, through human-computer interaction, the actual needs of users can be understood more accurately.

[0035] Step S33: When the judgment result is to send a manual operation consultation instruction signal, send a manual operation consultation instruction signal to the user.

[0036] Step S34: Control the temperature inside the barrel according to the result of the manual operation consultation command signal.

[0037] At this time, the user selects the manual operation consultation instruction, that is, controls the temperature in the drum by selecting the temperature threshold or turning on the cooling mode, so as to quickly take out the clothes.

[0038] Step S35: When the current time is the working hours on a weekday, no manual operation consultation instruction signal is sent.

[0039] Step S36: When the current time is a holiday and no user terminal is detected, no manual operation consultation instruction signal is sent.

[0040] Step S37: When the current time is within the preset time period before work on a weekday and frequent movement of the user terminal is detected, no manual operation consultation instruction signal is sent.

[0041] Frequent movement refers to a user moving back and forth indoors and stopping multiple times within a specific period of time. For example, if a user walks back and forth three or more times within five minutes, it can be defined as frequent movement.

[0042] Step S38: When the temperature inside the cylinder T≥T1, no manual operation consultation instruction signal is sent.

[0043] Among them, T1 described in the present invention is a safety protection temperature threshold. When in any of the cases from step S35 to step S38, no manual operation consultation instruction signal is sent, the dryer automatically controls the temperature in the drum, thereby realizing program automation control of the dryer.

[0044] Among them, the above-mentioned terminal device can be, for example, a mobile device. In some embodiments, the mobile device can include, for example, a mobile phone, a smart home device, a wearable device, a smart mobile device, a virtual reality device, etc., or any combination thereof.

[0045] Continue to refer to Figure 3 , step S33 of the present invention further includes the following steps:

[0046] Step S331: When it is detected that the current time is a holiday, the temperature inside the cylinder is T<T1, and a user terminal signal is detected, a manual operation consultation instruction signal is sent.

[0047] Within a certain range of drum temperature, the drum temperature should be maintained within a temperature range that does not damage the components in the dryer, does not affect its normal operation, and does not affect its service life. When the current time is a holiday and the user's terminal device signal is detected, in this case, it is usually determined that the user is resting at home. At this time, it is necessary to judge the user's actual needs. For example, if the user is concentrating on film and television programs or other daily chores at this time, he does not want to pick up clothes quickly; or the user is in a hurry to go out and wants to pick up clothes quickly. Therefore, at this time, the user's actual needs can be consulted by sending a manual operation consultation command signal, thereby providing the user with accurate and considerate services.

[0048] like Figure 4 As shown, step S34 of the present invention further includes the following steps:

[0049] Step S341: When the received manual operation consultation instruction signal is a temperature threshold selection instruction signal, the user is prompted to input a temperature threshold for picking up clothes.

[0050] At present, the factory-set safety temperature threshold for clothes removal after drying is relatively strict, so that users have to wait for a long time until the temperature in the drum reaches the safety temperature threshold for opening the door before they can remove the clothes, which affects the user experience. The present invention allows users to independently select the door-opening temperature by inputting the temperature threshold for removing clothes. The temperature threshold for removing clothes is higher than the factory-set safety temperature threshold by a certain temperature value. For example, the factory-set safety temperature threshold is 40°C, and the input temperature threshold for removing clothes can be 60°C, so that clothes can be removed quickly.

[0051] The present invention further includes step S3411 after step S341: when the temperature in the drum is less than or equal to the temperature threshold for taking out clothes, sending a door opening signal to the user terminal.

[0052] At this time, when the temperature in the drum is ≤ the temperature threshold for taking out clothes, for example, when the temperature in the drum is ≤ 60℃ (higher than the factory-set safety temperature threshold), a door-opening signal is sent to the user terminal to remind the user to open the door and take out clothes in time. The cloud platform or Bluetooth can be used as a transmission medium for the door-opening signal. For example, when the cloud platform is used as a transmission medium to send the door-opening signal, when the conditions for opening the door are met, the bottom plate of the dryer will report the door-opening signal to the cloud platform. The cloud platform subscribes to the data and pushes the message to the user terminal when it monitors that the device can open the door.

[0053] Step S342: When the received manual operation consultation instruction signal is a manual cooling instruction signal, the cooling module is started.

[0054] Among them, a cooling module is pre-installed in the dryer. When the dryer receives a manual cooling command signal, the cooling module is started, so that the clothes can be quickly cooled in a short time, so as to achieve the purpose of quickly taking out clothes.

[0055] The present invention further includes step S3421 after step S342: when the temperature inside the drum is less than or equal to a preset temperature value, sending a door opening signal to the user terminal.

[0056] Among them, the preset temperature value is the temperature value pre-set by the user or the system default temperature value for taking clothes. When the temperature in the drum is ≤ the preset temperature value, an opening signal is sent to the user terminal to remind the user to open the door and take clothes in time. Among them, the opening signal can be transmitted through a cloud platform or Bluetooth and other media.

[0057] Continue to return to reference Figure 3 , step S35 of the present invention further includes step S351: when the current time is the working time of a working day, and when the temperature in the cylinder T is less than T1, no manual operation consultation instruction signal is sent, and the automatic cooling instruction signal is not turned on.

[0058] When the current time is the working hours on weekdays, people are usually busy at work. For example, after starting the dryer, it is time to go to work before the user has time to take out the clothes after the drying process is completed. In this case, it can be determined that the user has no time to take out the clothes. Therefore, the automatic cooling command signal is not turned on to perform the cooling operation to save energy.

[0059] Step S36 of the present invention further includes step S361: when the current time is a holiday and no user terminal is detected, and when the temperature in the cylinder T is less than T1, no manual operation consultation instruction signal is sent, and no automatic cooling instruction signal is turned on.

[0060] When the current time is a holiday and no user terminal is detected, it is usually because the user has gone out. In this case, it can be determined that the user has no time to get clothes. Therefore, in order to save energy, the automatic cooling command signal is not turned on for the cooling operation.

[0061] The present invention further includes step S371 after step S37: starting the automatic temperature reduction instruction signal.

[0062] If frequent movement of the user terminal is detected during the preset time period before going to work, usually the user is busy at this time and can be judged as the user is in a hurry to go out. At this time, the automatic cooling command signal is turned on to achieve rapid cooling, thereby saving time and achieving the purpose of quickly getting clothes.

[0063] The present invention further includes step S381 after step S38: starting the automatic temperature reduction instruction signal.

[0064] When the temperature inside the drum T≥T1, it can be determined that the temperature at this time has exceeded the temperature threshold for safety protection of the components in the dryer. In order to avoid damage to them, the cooling command signal is automatically turned on to perform a cooling operation to reduce the temperature inside the drum to below the safety protection temperature threshold, thereby avoiding affecting its service life.

[0065] To sum up, the dryer of the present invention can control the temperature in the drum according to the actual scenario, that is, it makes a judgment based on the current time and the temperature in the drum, thereby realizing a specific clothing-taking function mode in a specific scenario, wherein, without sending a manual operation consultation command signal, the user does not need to make a selection judgment, thereby realizing the intelligent automatic control of the temperature in the drum by the dryer, and automatically judging whether the user needs to take clothes quickly. When it is necessary to send a manual operation consultation command signal, through human-computer interaction, it can understand the user's actual needs more accurately, and achieve the purpose of taking clothes quickly. To sum up, the control method of the present invention can solve the problem that the existing dryer cannot accurately judge whether to perform the function related to quick clothing-taking, thereby improving the user experience. In addition, the present invention can also make two function selections to achieve the purpose of quick clothing-taking according to the actual usage needs of the user, namely, one is to start the cooling operation, so as to achieve rapid cooling, and the other is to control the temperature threshold. No hardware needs to be added, only the bottom plate program needs to be modified, which is convenient and fast.

[0066] Those skilled in the art will appreciate that the clothes dryer described above also includes some other well-known structures, such as a processor, a controller, and a memory. The memory includes, but is not limited to, random access memory, flash memory, read-only memory, programmable read-only memory, volatile memory, non-volatile memory, serial memory, parallel memory, or registers. The processor includes, but is not limited to, CPLD / FPGA, DSP, ARM processor, MIPS processor, etc. To unnecessarily obscure the embodiments of the present disclosure, these well-known structures are not shown in the drawings.

[0067] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A method for controlling the temperature in a drum of a clothes dryer, characterized in that: The control method includes: Start the drying function after obtaining the drying instruction signal; Get the temperature inside the cylinder and the safety protection temperature threshold; Controlling the temperature inside the cylinder according to the temperature inside the cylinder and the safety protection temperature threshold; The step of "controlling the temperature in the barrel according to the temperature in the barrel and the safety protection temperature threshold" further includes: Get the current time; Determining whether to send a manual operation consultation instruction signal according to the current time, the temperature inside the cylinder, and the safety protection temperature threshold; When the judgment result is to send a manual operation consultation instruction signal, the manual operation consultation instruction signal is sent to the user, and the temperature in the cylinder is controlled according to the result of the manual operation consultation instruction signal; Wherein, the manual operation consultation command signal includes a temperature threshold selection command signal or a manual start-up cooling command signal, and the safety protection temperature threshold is T1; The step of “determining whether to send a manual operation consultation instruction signal based on the current time, the temperature inside the cylinder, and the safety protection temperature threshold” further includes: When it is detected that the current time is a holiday, the temperature in the cylinder is T<T1, and a user terminal signal is detected, the manual operation consultation instruction signal is sent.

2. The method for controlling the temperature in the drum of a clothes dryer according to claim 1, characterized in that: The step of "sending a manual operation consultation instruction signal to the user, and controlling the temperature in the barrel according to the result of the manual operation consultation instruction signal" further includes: Sending manual operation consultation instruction signals to users; When the received manual operation consultation instruction signal is the temperature threshold selection instruction signal, prompting the user to input a temperature threshold for picking up clothes; When the temperature inside the drum is less than or equal to the temperature threshold for removing clothes, a door opening signal is sent to the user terminal.

3. The method for controlling the temperature in the drum of a clothes dryer according to claim 1, wherein: The step of "sending a manual operation consultation instruction signal to the user, and controlling the temperature inside the barrel according to the result of the manual operation consultation instruction signal" further includes: Sending manual operation consultation instruction signals to users; When the received manual operation consultation instruction signal is the manual start-up cooling instruction signal, the cooling module is started.

4. The method for controlling the temperature in the drum of a clothes dryer according to claim 3, characterized in that: After the step of “starting the cooling module when the manual operation consultation instruction signal received is the manual cooling instruction signal”, the control method further includes: When the temperature inside the drum is less than or equal to the preset temperature value, a door opening signal is sent to the user terminal.

5. A method for controlling the temperature in the drum of a clothes dryer, characterized in that: The control method includes: Start the drying function after obtaining the drying instruction signal; Get the temperature inside the cylinder and the safety protection temperature threshold; Controlling the temperature inside the cylinder according to the temperature inside the cylinder and the safety protection temperature threshold; The step of "controlling the temperature in the barrel according to the temperature in the barrel and the safety protection temperature threshold" further includes: Get the current time; Determining whether to send a manual operation consultation instruction signal according to the current time, the temperature inside the cylinder, and the safety protection temperature threshold; When the judgment result is to send a manual operation consultation instruction signal, the manual operation consultation instruction signal is sent to the user, and the temperature in the cylinder is controlled according to the result of the manual operation consultation instruction signal; Wherein, the manual operation consultation command signal includes a temperature threshold selection command signal or a manual start-up cooling command signal, and the safety protection temperature threshold is T1; The step of “determining whether to send a manual operation consultation instruction signal based on the current time, the temperature inside the cylinder, and the safety protection temperature threshold” further includes: When the current time is the working hours of a weekday, the manual operation consultation instruction signal is not sent; or when the current time is a holiday and no user terminal is detected, not sending the manual operation consultation instruction signal; Or when the current time is within a preset time period before work on a weekday and frequent movement of the user terminal is detected, the manual operation consultation instruction signal is not sent.

6. The method for controlling the temperature in the drum of a clothes dryer according to claim 5, characterized in that: The step of “not sending the manual operation consultation instruction signal when the current time is the working time on a working day” further includes: When the current time is the working time on a working day, and when the temperature in the cylinder T is less than T1, the manual operation consultation instruction signal is not sent, and the automatic temperature reduction instruction signal is not turned on.

7. The method for controlling the temperature in the drum of a clothes dryer according to claim 5, characterized in that: The step of “not sending the manual operation consultation instruction signal when the temperature in the cylinder T≥T1” further includes: When the temperature inside the cylinder T≥T1, the manual operation consultation instruction signal is not sent, and the automatic temperature reduction instruction signal is turned on.

8. The method for controlling the temperature in the drum of a clothes dryer according to claim 5, characterized in that: The step of “not sending the manual operation consultation instruction signal when the current time is a holiday and no user terminal is detected” further includes: When the current time is a holiday, no user terminal is detected, and the temperature inside the cylinder T is less than T1, the manual operation consultation instruction signal is not sent, and the automatic temperature reduction instruction signal is not turned on; Alternatively, the step of “not sending the manual operation consultation instruction signal when the current time is within a preset time period before work on a weekday and frequent movement of the user terminal is detected” further includes: When the current time is within the preset time period before work on a weekday and it is detected that the user terminal moves frequently, the manual operation consultation instruction signal is not sent, and the automatic cooling instruction signal is turned on.

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