CN-115404682-B - Clothes dryer drum inlet temperature detection method and device and clothes dryer

CN115404682BCN 115404682 BCN115404682 BCN 115404682BCN-115404682-B

Abstract

The invention discloses a clothes dryer cylinder inlet temperature detection method and device and a clothes dryer, wherein a temperature sensor or a thermostat is arranged at a position, close to a heater, of an air inlet cylinder air channel, so that the temperature of warm air can be timely and accurately detected, a means of opening an air distribution port at the side of the temperature sensor or the thermostat is combined, relatively cool air is sucked into the air inlet cylinder air channel based on negative pressure generated in the air inlet cylinder air channel, the surface of the temperature sensor or the thermostat is cooled, the accuracy of an actual detection value is ensured by combining a mode of inquiring a corresponding relation table of the detection value and the warm air temperature, and the technical problem that the detection temperature is not timely and inaccurate due to the fact that the temperature sensor or the thermostat is far away from the heater due to the influence of the high temperature of the heater in the prior art is solved.

Inventors

YANG KUN
XU QINGGUANG
LU GUANG
MI DELONG
ZHENG XIAOQIU
SUN JICHEN
Tian Jiaoyi

Assignees

上海海尔洗涤电器有限公司
重庆海尔滚筒洗衣机有限公司
海尔智家股份有限公司

Dates

Publication Date: 20260421
Application Date: 20210527
Priority Date: 20210527

Claims (10)

1. A dryer drum feed temperature detection method, the dryer comprising: A heater; The air inlet cylinder air channel is communicated with the inner cylinder through the inner cylinder air inlet, and the warm air enters the inner cylinder from the inner cylinder air inlet through the air inlet cylinder air channel; the clothes dryer is characterized by further comprising: The temperature sensor is arranged on the air inlet tube air channel and is positioned in the set range of the warm air inlet; the air distribution port is arranged on the air inlet tube air channel and is positioned at the side of the temperature sensor; The method comprises the following steps: acquiring a detection value of the temperature sensor; inquiring a corresponding relation table of the detection value and the warm air temperature to obtain the warm air temperature of the actual cylinder.
2. The method for detecting the drum feeding temperature of the clothes dryer according to claim 1, wherein the table of correspondence between the detected value and the warm air temperature is obtained and stored in the clothes dryer according to the following steps: simulating a plurality of groups of exhaust resistance at a set heating temperature; Starting a drying process under the simulated exhaust resistance; Acquiring an actual temperature value of warm air in the air inlet tube air channel and a detection value of the temperature sensor; And recording the detection value and the actual temperature value of the warm air to form a corresponding relation table of the detection values and the warm air temperatures under different exhaust resistances at the set heating temperature.
3. The dryer feed drum temperature detection method according to claim 2, characterized in that the method further comprises: Determining a heating temperature; detecting exhaust resistance; And inquiring the corresponding relation between the detected values of the heating temperature and the exhaust resistance and the warm air temperature based on the heating temperature and the exhaust resistance to obtain the warm air temperature of the actual cylinder.
4. The dryer advances a section of thick bamboo temperature-detecting device includes: A heater; The air inlet cylinder air channel is communicated with the inner cylinder through the inner cylinder air inlet, and the warm air enters the inner cylinder from the inner cylinder air inlet through the air inlet cylinder air channel; Characterized by further comprising: The temperature sensor is arranged on the air inlet tube air channel and is positioned in the set range of the warm air inlet; the air distribution port is arranged on the air inlet tube air channel and is positioned at the side of the temperature sensor; and the warm air temperature determining module is used for acquiring the detection value of the temperature sensor, inquiring the corresponding relation table of the detection value and the warm air temperature, and obtaining the warm air temperature of the actual cylinder.
5. The dryer feed drum temperature detection apparatus of claim 4, further comprising: the storage module is used for storing the corresponding relation table of the detection value and the warm air temperature; Wherein, the corresponding relation table of the detection value and the warm air temperature is obtained according to the following steps: simulating a plurality of groups of exhaust resistance at a set heating temperature; Starting a drying process under the simulated exhaust resistance; Acquiring an actual temperature value of warm air in the air inlet tube air channel and a detection value of the temperature sensor; And recording the detection value and the actual temperature value of the warm air to form a corresponding relation table of the detection values and the warm air temperatures under different exhaust resistances at the set heating temperature.
6. The dryer feed drum temperature detection apparatus of claim 5, further comprising: And the inquiry preparation module is used for determining the heating temperature and detecting the exhaust resistance, so that the warm air temperature determination module inquires the corresponding relation between the detected values of the heating temperature and the exhaust resistance and the warm air temperature based on the heating temperature and the exhaust resistance, and the warm air temperature of the actual cylinder is obtained.
7. The dryer advances a section of thick bamboo temperature-detecting device includes: A heater; a drying controller controlling a heating temperature of the heater and controlling the heater to be turned on and off; The air inlet cylinder air channel is communicated with the inner cylinder through the inner cylinder air inlet, and the warm air enters the inner cylinder from the inner cylinder air inlet through the air inlet cylinder air channel; Characterized by further comprising: The thermostat is arranged on the air inlet tube air channel and is positioned in the set range of the warm air inlet, and is arranged to send a signal to the drying controller when the detected temperature exceeds the temperature limit value so that the drying controller controls the heater to stop heating; the air distribution port is arranged on the air inlet tube air channel and is positioned at the side of the thermostat; And the warm air temperature determining module is used for acquiring the detection value of the thermostat, inquiring the corresponding relation table of the detection value and the warm air temperature, and obtaining the warm air temperature of the actual cylinder.
8. The dryer feed drum temperature detection apparatus of claim 7, further comprising: the storage module is used for storing the corresponding relation table of the detection value and the warm air temperature; Wherein, the corresponding relation table of the detection value and the warm air temperature is obtained according to the following steps: simulating a plurality of groups of exhaust resistance at a set heating temperature; Starting a drying process under the simulated exhaust resistance; acquiring an actual temperature value of warm air in the air inlet tube air channel and a detection value of the thermostat; And recording the detection value and the actual temperature value of the warm air to form a corresponding relation table of the detection values and the warm air temperatures under different exhaust resistances at the set heating temperature.
9. The dryer feed drum temperature detection apparatus of claim 8, further comprising: And the inquiry preparation module is used for determining the heating temperature and detecting the exhaust resistance, so that the warm air temperature determination module inquires the corresponding relation between the detected values of the heating temperature and the exhaust resistance and the warm air temperature based on the heating temperature and the exhaust resistance, and the warm air temperature of the actual cylinder is obtained.
10. A clothes dryer comprising the clothes dryer drum-in temperature detecting apparatus according to claim 4 or claim 7.

Description

Clothes dryer drum inlet temperature detection method and device and clothes dryer Technical Field The invention belongs to the technical field of clothes drying, and particularly relates to a method and a device for detecting the temperature of a clothes dryer entering a drum and the clothes dryer. Background Existing dryers are generally classified into two categories, in-line and condensing. In the direct-discharge clothes dryer, air is heated by a heater to generate warm air, the warm air is blown into a drum through an air inlet drum air channel, the warm air directly enters an exhaust pipe after being contacted with clothes, and the warm air is subjected to hot drying during the clothes passing through the clothes and takes away water vapor. The condensing clothes dryer is characterized in that internal air circularly flows in a roller and an air duct, firstly, after clothes to be dried are put into the roller, warm air generated by heating of a heater is supplied into the roller, the supplied warm air contacts with the clothes of the roller to dry the clothes, high-temperature and high-humidity air generated by drying the clothes firstly passes through a lint filter to remove lint in the air, then enters the air duct through a turbofan to be introduced into a condenser to be subjected to steam condensation and cooling, and becomes low-temperature and low-humidity air to enter the air duct at the rear part of the machine, and then the low-temperature and low-humidity air is heated again through the heater and enters the roller through an air inlet of the roller. In the clothes drying process, the temperature of the warm air entering the drum is required to be detected, the working state of the clothes dryer is judged based on the detected temperature, and whether the temperature of the warm air is insufficient or ultrahigh can be timely found, so that the clothes dryer can adjust timely, for example, the heating temperature is increased when the temperature is insufficient, or the heating is stopped timely when the temperature is ultrahigh, and the like. The temperature of the inlet drum of the existing clothes dryer is usually realized by a thermostat or a temperature sensor arranged on an air inlet drum duct, as shown in fig. 1, the thermostat or the temperature sensor 1 is usually arranged at a position above an air inlet drum duct 2, and the temperature of the inlet drum is controlled by detecting the actual temperature of an air inlet of the drum, so that the temperature of the inlet drum is controlled to not exceed the deformation or damage temperature of corresponding clothes materials for different clothes materials. As can be seen from fig. 1, the existing temperature sensor or thermostat is limited by the temperature working range of the device and has to be arranged at a place far away from the heater 3, and this arrangement mode often causes that the dryer is dried under full load or unsmooth wind path, the air stays in the heater for a long time, the temperature rises rapidly, and because the temperature sensor or thermostat is far away from the heater collagen, the detection of high temperature is not timely enough, which can lead to the heater to continue heating the air, so that the warm air temperature in the drum is ultrahigh and damages the clothing, or leads to abnormal jump-off of the mechanical thermostat, the user has to apply for maintenance after sale, because in the design of the dryer, more than two stages of temperature protection control are often adopted on the drum inlet temperature control, the temperature sensor or thermostat is the first stage of electronic control, the heating is stopped in time when the problem is found in combination with software control, the two stages of temperature control are mechanical control or can not reset, or can not reset when the mechanical thermostat is adopted, if the electronic control is not timely to judge that the mechanical thermostat is delayed because of the detection, the mechanical thermostat is not timely, the mechanical thermostat is caused, the mechanical thermostat is broken, the mechanical thermostat is not reset, and the quality of the mechanical thermostat is obviously lost, and the user can only can reduce the quality of the product after the jump-off after the user has to apply for maintenance. Disclosure of Invention The invention aims to provide a clothes dryer cylinder inlet temperature detection method and device and a clothes dryer, wherein a temperature sensor or a thermostat is arranged at a position, close to a heater, of an air inlet duct, so that the temperature of warm air can be timely and accurately detected, a means of opening an air distribution port at the side of the temperature sensor or the thermostat is combined, relatively cool air is sucked into the air inlet duct based on negative pressure generated in the air inlet duct, the surface of the temperature sensor or the thermostat is cooled, the a