32results about How to "Improve human comfort" patented technology

The invention discloses a temperature adjusting method for a natural wind air conditioner. The natural wind air conditioner comprises a plurality of heat exchangers and a refrigerant pipeline, wherein the heat exchangers adjoin in the direction of a heat exchange surface, and the refrigerant pipeline is connected with the heat exchangers. The heat exchangers are connected in parallel. The refrigerant pipeline comprises a plurality of branches (1). Each branch (1) is connected to an outlet (3) of the refrigerant pipeline from an inlet (2) of the refrigerant pipeline through the corresponding heat exchanger. Each branch (1) is provided with a throttling device. The temperature adjusting method for the natural wind air conditioner includes the steps that the temperature difference between the indoor temperature and the target temperature is detected; and according to the difference between the indoor temperature and the target temperature, the opening degrees of the throttling devices corresponding to the heat exchangers are adjusted, so that the indoor temperature is matched with the speed of natural wind. According to the temperature adjusting method for the natural wind air conditioner, the problem that the outlet wind temperature of a wind outlet of a natural wind air conditioner in the prior art fluctuates obviously and consequently people feel cold one minute and hot the next can be solved.

The invention provides a backrest skeleton of a car. The backrest skeleton is integrally molded by plastic materials. The skeleton is provided with a shell, a middle cross beam and a bottom cross beam, wherein the shell extends along the circumferential direction of the skeleton; the middle cross beam is used for connecting the middle parts of the two sides of the shell; the bottom cross beam is used for connecting the bottom parts of the two sides of the shell; reinforcing parts are arranged on the inner sides between the upper parts and the bottom parts of the two sides of the shell; and the cross sections of the two sides of the shell are shaped like a horizontal F or a figure shown in the description. The plastic backrest skeleton provided by the invention is not only lighter than a metal skeleton in weight, but also superior to the metal skeleton in space; the section width of the backrest skeleton is thinner than that of the original plastic skeleton by 1.0mm to 2.5mm, so that the thickness of the backrest is reduced, and thus the usable space in the car is enlarged; and simultaneously, the curved surface, which can be possibly contacted by a passenger, on the surface of the skeleton is changed, so that the shape of the backrest skeleton is more closer to the curved surface of the back of a human body, and the area of the supporting surface of the human body is enlarged, therefore, the comfort of the human body is improved, and simultaneously, the thickness of a foaming layer can be reduced by 5mm to 20mm.

The invention discloses an air conditioner control method and device and an air conditioner system. The method includes the steps that the difference value of the outdoor pipe temperature of an air conditioner and the outdoor environment temperature is computed; the moment when the air conditioner enters the defrosting state is determined according to the difference value of the outdoor pipe temperature and the outdoor environment temperature; if the moment when the air conditioner enters the defrosting state is smaller than or equal to the preset time, the air conditioner is controlled to conduct the operation, corresponding to the model of the air conditioner, of increasing the indoor temperature; the model comprises a frequency-fixed machine and a frequency-variable machine. By the adoption of the air conditioner control method and device and the air conditioner system, the human body comfort of users during the air conditioner defrosting period can be improved.

The invention discloses a range hood. The range hood comprises a machine body, a refrigeration module, a draught fan and a heat exchanger, wherein the refrigeration module is arranged on the machine body; the refrigeration module comprises a shell; the shell is provided with an air inlet, a cold air outlet and a hot air outlet; a cold air channel for communicating the air inlet with the cold air outlet, and a hot air channel for communicating the air inlet and the hot air outlet are defined in the shell; the draught fan is used for guiding external air into the cold air channel and the cold air channel from the air inlet; the heat exchanger is arranged in the shell; the heat exchanger is provided with a heating end and a refrigeration end; the refrigeration end is arranged in the cold air channel; and the heating end is arranged in the hot air channel. According to the range hood disclosed by the embodiment of the invention, the cold air outlet on the refrigeration module can blow out low-temperature airflow; and a partial refrigeration function to an external environment is realized, the working environment of a kitchen is improved and the comfort of a human body is improved.

The invention provides a separate electric bed adopting a paired lock connecting structure. The separate electric bed is divided into a front part and a rear part. When the separate electric bed is used, the front part and the rear part are connected by the paired lock connecting structure to form an integrated bed. When the separate electric bed is used, a front frame and a rear frame are placed flatly and align with connecting holes in a fixed seat, a connecting seat is sleeved on the fixed seat, the connecting holes are aligned, and bolts are inserted into the connecting holes, so that the front frame and the rear frame can be connected to form the integrated bed by locking nuts. The separate electric bed has reasonable structural design, can adjust head, hip and feet positions of a human body and has split type design unprecedentedly, so that the electric bed is divided into the front part and the rear part. The separate electric bed is convenient to transport, carry, store and use in special occasions. The body comfortable degree of a user is further increased; the requirements of people on high life quality and the requirements of special occasions, regions and countries are met; and the market share is further increased.

The invention provides an air conditioner indoor unit. The air conditioner indoor unit comprises a machine shell and a ventilation device, the ventilation device is installed in the machine shell so that outdoor fresh air can be led into a room through the ventilation device, wherein a fresh air inlet, a fresh air outlet, an air conditioner air inlet and an air conditioner air outlet are arrangedon the machine shell, a fresh air channel is formed between the fresh air inlet and the fresh air outlet, an air conditioner air channel is formed between the air conditioner air inlet and the air conditioner air outlet, the air conditioner air inlet communicates with the fresh air channel; and confluence fresh air is formed through the confluence of indoor air which enters the fresh air channel and fresh air in the fresh air channel, and the indoor air in the fresh air channel is subjected to exchange heat with the fresh air in the confluence process, so that the temperature of the fresh airin the fresh air channel is increased. Therefore, according to the air conditioner indoor unit, the temperature difference between the fresh air and the indoor environment is reduced, and the temperature of the the fresh air which is conveyed into the room is relatively close to the indoor environment temperature, so that the human body comfort by using the air conditioner indoor unit is improved.

The invention discloses an air conditioner air exhausting control method. An air conditioner comprises an upper air outlet, a lower air outlet, a fan corresponding to the upper air outlet and the lower air outlet, and an air guide mechanism which partially covers the fan; and the air guide mechanism is slidably connected into an air channel of the air conditioner so that the air exhausting volumeof the upper air outlet and the air exhausting volume of the lower air outlet can be adjusted. The air conditioner air exhausting control method comprises the following steps that the indoor temperature value and the set temperature value are obtained; the rotation angle of the air guide mechanism is determined according to the indoor temperature value, the set temperature value and the preset temperature threshold value; and the air guide mechanism is controlled to rotate at the rotation angle. The invention further discloses a control device of the air conditioner, the air conditioner and acomputer readable storage medium. The air exhausting volume of the upper air outlet and the air exhausting volume of the lower air outlet are controlled by the air guide mechanism, and on the premisethat the diversity of air exhausting modes of the air conditioner and the high human body comfort are ensured, the effect that the air exhausting volume of the upper air outlet and the air exhaustingvolume of the lower air outlet of the air conditioner are adjusted freely can be achieved.

The invention discloses an internal environment adjusting method and an electronic device in vehicle. The method comprises the steps of obtaining human-face temperature in a vehicle; compensating thetemperature set by a user based on the human-face temperature in the vehicle, and obtaining the compensated target temperature; controlling the vehicle air-conditioning to be adjusted to the compensated target temperature. The invention is advantageous in that the human-face temperature is detected, and the temperature set by the user is compensated based on the human-face temperature in the vehicle, so that the vehicle air-conditioning can be controlled; finally the vehicle environment can be controlled within a comfort range of human body, and comfort for passengers in the vehicle can be improved.

The invention discloses an air conditioner and a control method and device thereof. The control method for the air conditioner includes the steps that the temperature changing degree of the three-dimensional space where the air conditioner is located is detected; the human body activity intensity in the three-dimensional space is determined according to the temperature changing degree; a running mode corresponding to the human body activity intensity is searched for, wherein the corresponding relation between the human body activity intensity and the running mode is stored in the air conditioner; and the air conditioner is controlled to run according to the found running mode. By means of the air conditioner and the control method and device of the air conditioner, the problem that an air conditioner adjusting mode in the prior art has no pertinence is solved, and therefore the effects that the running state of the air conditioner can be intelligently adjusted, the refrigerating or heating temperature of the air conditioner can better conform to the temperature needed by human bodies, and the comfort degree of human bodies is improved are achieved.

Disclosed are a control method for an air conditioner indoor unit and the air conditioner indoor unit which can effectively avoid influence on performance due to improper fresh air volume. According to the control method for the air conditioner indoor unit, a controller is used for controlling a fresh air fan included by the air conditioner indoor unit. The fresh air fan has a stop gear and at least two operating gears generating different noise values. The at least two operating gears include the high-speed operating gear and the low-speed operating gear. The controller is used for receiving the outdoor temperature value obtained by an outdoor temperature sensor. When the outdoor temperature value received by the controller is larger than a preset upper limit or smaller than a preset lower limit, the controller is used for setting the fresh air fan to be at the stop gear or the low-speed operating gear or enabling the fresh air fan to operate intermittently.

The invention provides an automobile waste heat recovering and reusing system applied to the technical field of automobile engines. An exhaust pipe (3) of the automobile waste heat recovering and reusing system comprises an exhaust pipe branch pipeline I (4) and an exhaust pipe branch pipeline II (5). A heat exchanger (6) is arranged on the exhaust pipe branch pipeline II (5). A bypass valve actuator (7) and a bypass valve (8) are arranged on the exhaust pipe (3). A spiral heat-exchange pipe part (10) is arranged on the portion, located in the heat exchanger (6), of a cooling liquid pipeline (9). A heat exchanger outlet cooling liquid temperature sensor (11) is arranged on the portion, stretching out of the heat exchanger (6), of the cooling liquid pipeline (9). According to the automobilewaste heat recovering and reusing system, the structure is simple; during cold starting of an automobile, part of heat in automobile exhaust can be recovered to be used for heating cooling liquid inan automobile engine cooling system, so that an engine is heated rapidly and reliably, the heat efficiency during cold starting of the engine is improved, and combustion in a cylinder is made more sufficient.

The invention discloses an integrated evaporative cooling and aeration cooling system combined with a treadmill. The integrated evaporative cooling and aeration cooling system comprises a sliding packing type evaporative cooling unit, an air supply unit and a power supply unit which are connected with the treadmill, wherein the sliding packing type evaporative cooling unit is connected with the air supply unit and the power supply unit. According to the integrated evaporative cooling and aeration cooling system, the problems that thermal comfort is poor, the aeration cooling capability is poor and the treadmill mechanically generates heat when a body builder conducts bodybuilding on the treadmill are solved, and a good bodybuilding environment can be provided for the bodybuilder doing exercises on the treadmill.

The invention discloses building energy-saving thin-layer paint and a preparation method therefor. The building energy-saving thin-layer paint comprises the following raw materials in parts by weight: 16-30 parts of acrylic emulsion, 10-20 parts of a filler, 20-26 parts of barium sulfate, 1-5 parts of kaolin, 5-18 parts of titanium dioxide, 1-4 parts of dodecanol , 0.1-0.2 part of 2-methyl-4-isothiazolin-4-acetone, 0.1-0.4 part of 2-n-octyl-4-isothiazolin-3-acetone, 0.1-0.4 part of BASF A10, 0.1-0.5 part of sodium polyacrylate, 8-15 parts of sodium tripolyphosphate and 10-20 parts of water. The preparation method comprises: sampling in parts by weight, getting and mixing the filler, the barium sulfate, the kaolin and the titanium dioxide with water to obtain a mixture, adding sodium tripolyphosphate into the mixture, and stirring the mixture until the mixture is uniform; adding the acrylic emulsion and the dodecanol into the mixture, and stirring the mixture until the mixture is uniform; and adding the residual raw materials, and carrying out ball-milling on the residual raw materials, thereby obtaining the building energy-saving thin-layer paint. The building energy-saving thin-layer paint has the characteristics of good thermal insulation performance, low cost and a relatively thin coating.

A window type natural ventilation air humidifier is provided with a water collection tank. An air filtering device is arranged above the water collection tank. A water circulation device is arranged in the air filtering device. The air filtering device is composed of an inner filter screen and an outer filter screen. The water circulation device is arranged between the two filter screens. Indoor air can be humidified and cooled to a certain degree, the indoor air quality can be improved as well, and the building energy consumption is lowered.

The invention discloses a constant frequency air conditioning system for improving the indoor comfort degree. The constant frequency air conditioning system comprises a refrigerant circulation circuitwhich is composed of a compressor, an outdoor heat exchanger, a first indoor heat exchanger and a first capillary tube which are connected through a pipeline, the constant frequency air conditioningsystem further comprises a heat exchange branch which is in parallel with the outdoor heat exchanger, wherein the heat exchange branch comprises a first end which communicates with the pipeline between the outdoor heat exchanger and the compressor and a second end which communicates with the pipeline between the outdoor heat exchanger and the first indoor heat exchanger, the heat exchange branch is sequentially connected with an electronic expansion valve and a second indoor heat exchanger in series along the direction from the first end of the heat exchange branch to the second end of the heat exchange branch; the first indoor heat exchanger and the second indoor heat exchanger are correspondingly arranged on the same air supply pipe along the air supply direction; and the constant frequency air conditioning system further comprises a temperature sensor which is used for detecting the indoor ambient temperature and a controller, and when the constant frequency air conditioning systementers a refrigeration mode, the controller adjusts the opening of the electronic expansion valve based on the indoor temperature Ta collected by the temperature sensor.

The invention belongs to the technical field of carbon capture, and discloses a mobile carbon capture system applied to part-time farming buildings, wherein the mobile carbon capture system comprisesa carbon capture unit and a high-concentration CO2 supply unit which are respectively integrated, the carbon capture unit comprises a CO2 adsorption cavity and a sucking pump, and the high-concentration CO2 supply unit comprises a vacuum pump and a gas storage cavity; an air inlet of the CO2 adsorption cavity is connected to the indoor environment through an air pump, an exhaust port of the CO2 adsorption cavity is connected to an atmosphere outlet, an air outlet of the CO2 adsorption cavity is connected with an air inlet of the vacuum pump, an air outlet of the vacuum pump is connected with an air inlet of the air storage cavity, an air outlet of the air storage cavity is connected with the greenhouse air supply port, and the greenhouse air supply port is communicated with the greenhouse.According to the invention, CO2 with lower concentration is captured from the interior of the building, enriched to higher concentration and stored, and CO2 is supplied to the greenhouse at the sametime, so that waste recycling of CO2 is realized; in addition, cross-region use can be achieved, the cost is saved, and the effect of multiple purposes is achieved.

The invention belongs to the technical field of automobile windows, and particularly relates to an efficient ventilation automobile window structure which comprises a glass automobile window and further comprises an inner-layer automobile window body arranged in the glass automobile window; the inner-layer automobile window and the glass automobile window are parallel to each other and are the same in size; a plurality of round holes are formed in the inner-layer automobile window, the inner diameters of the round holes are firstly decreased and then increased in the direction from the exterior of the inner-layer automobile window to the interior of the inner-layer automobile window, a wind shielding piece is embedded in the position with the minimum inner diameter of each round hole and provided with a plurality of ventilation holes of different sizes, and a fan is arranged above the side facing the interior of the inner-layer automobile window. The structure has the advantages that the ventilating effect can be effectively improved, excessive wind is avoided, the human body comfort is good, the ventilating effect can be adjusted as required, and the practicability is high.

The invention provides an automobile exhaust waste heat recycling system applied in the technical field of automobile engines. A front end plate (35) is arranged at the position, close to an inlet cone end (33), between an outer layer shell (31) and an inner layer shell (32) of a heat exchanger (6) of the automobile exhaust waste heat recycling system; a rear end plate (36) is arranged at the position, close to an outlet cone end (34), between the outer layer shell (31) and the inner layer shell (32); a plurality of flat tubes (37) are inserted between the front end plate (35) and the rear endplate (36); fins (38) are inserted in each flat tube (37) separately; and a gap part is formed between each flat tube (37) and the fin (38) inserted in the flat tube (37). The automobile exhaust heatrecycling system can recover part of the heat from automobile exhaust when an automobile is cold-started, and then utilize the heat to heat a coolant in an automobile engine cooling system so as to quickly and reliably warm an engine and improve the thermal efficiency of the engine during cold-start.

The invention discloses a frame strip nailing machine. The frame strip nailing machine comprises a machine frame, a workbench, an air nail gun and a control system. The machine frame comprises a leftcolumn, a right column and a base frame; the workbench is arranged between the left column and the right column, and the workbench can move up and down along the left column and the right column; theworkbench is provided with a table, and a long strip shaped nail outlet for free access of brad nails is formed in the middle of the table; the nail outlet is provided with a detachable limiting jacking device, and the workbench is provided with a pressing device; the pressing device comprises a pressure foot plate, a pressing cylinder, a supporting cross beam and an adjustable column; a detachable nail die is arranged at the striking pin position of the air nail gun, and the air nail gun is detachably installed on a sliding block inside the workbench through a sliding block cushion block; andthe air nail gun is driven to move forward and backward by a servo motor through a synchronous belt. The frame strip nailing machine has the characteristics of convenience, quickness, high efficiency, comfort and the like.

A roof combined piece of an electric bicycle sun-shading device is composed of a front wind shield, a sun shield and a transparent sheet in a combined mode. The roof combined piece is characterized inthat the front wind shield and the sun shield are combined and assembled in the direction of an arrow to form a roof, a square hole for installing the transparent sheet is formed in the center of thefront wind shield, a concave frame is manufactured on the periphery of the square hole, the concave frame and the transparent sheet are matched and fixedly connected, a transverse connecting part matched with the sun shield is manufactured on the end face above the front wind shield, and the transverse connecting part and the sun shield are tightly matched and fixedly connected; the adjacent areas of the sun shield and the front wind shield are bent with the cambered surface larger than the interior angle of 90 degrees or designed and manufactured at a bending angle, and the contact and connecting area of the sun shield and the front wind shield should be located below the bending angle; and buckles matched with a peripheral pipe in size are manufactured on the middle portions on the periphery of the combined roof in the look-up direction and applied to clamping connection between the roof and the peripheral pipe, and arc-shaped grooves are formed in the edge on the periphery of the roof and act on drainage routes on rainy days.

The invention relates to an air conditioner control system based on the internal environment. The air conditioner control system based on the internal environment comprises a refrigeration module anda heating module and further comprises a control processor, a camera shooting module, a first temperature acquiring module, a second temperature acquiring module and a temperature control module. Thecamera shooting module is connected with the control processor and used for shooting environment images and outputting the environment images to the control processor. The first temperature acquiringmodule is connected with the control processor and used for acquiring the temperature inside the environment, converting the temperature inside the environment into real-time environmental temperatureand outputting the real-time environmental temperature to the control processor. The second temperature acquiring module is connected with the control processor and used for acquiring the temperatureof an external environment, converting the temperature of the external environment into real-time external environment temperate and outputting the real-time external environment temperate to the control processor. The control processor obtains the environment images and extracts human body images from the environment images and calculates the somatosensory value. The control processor further comprises a storage unit. The storage unit pre-stores a somatosensory value and temperature table.

The invention discloses a corner hanging type air conditioner. The conditioner comprises a machine shell, a heat exchanger and a counter-rotating fan, wherein an upper air plate is arranged on the front side of the upper end of the machine shell, a lower air plate is arranged at the bottom of the machine shell, the heat exchanger and the counter-rotating fan are arranged inside the machine shell,the heat exchanger is located above the counter-rotating fan, and the heat exchanger is of an open annular structure. According to the conditioner, two inclined side faces of the cylindrical shell andthe wall face of a wall corner are mounted in a matched mode, so that main flow passing through an air opening flows towards the opposite angles of a room, a main heat exchange area of the room is changed, and the heat exchange effect is improved; the counter-rotating fan, an upper air opening and a lower air opening are arranged and combined with angular installation to form airflow organizationlarge circulation of diagonal areas of the room, refrigerating and heating can form different temperature layers correspondingly, and the comfort of a human body is improved; and the counter-rotatingfan is combined with the upper and lower air ports to form multi-directional air supply, and the air supply forms are rich.

The invention discloses an improved spandex gauze material which comprises a spandex yarn layer and is characterized by further comprising a cold material layer arranged on one side of the spandex yarn layer. The improved spandex gauze material has the advantages of excellent sweat discharging performance, high human body comfort, and low possibility of bacteria breeding, and also has an excellent market prospect.

The invention provides a variable frequency air conditioner operation control method and device and an air conditioner. The variable frequency air conditioner operation control method comprises the following steps: S1, the air conditioner enters an automatic control mode, and human body comfort related parameters in an action space of the air conditioner are obtained; S2, a set temperature Tsetting is obtained, and a human body comfort index adjusting stage enters; S3, the SSD value is calculated, if SSD is larger than or equal to ssd1 and smaller than or equal to ssd2, T setting is not changed, and otherwise, T setting is adjusted; S4, if F is larger than or equal to f1 and smaller than or equal to f2, the T evaporator target is not changed, and otherwise, the T evaporator target is adjusted; S5, if V is larger than or equal to v1 and smaller than or equal to v2, the rotating speed of a motor is not changed, otherwise, the rotating speed of the motor is adjusted; and S6, the air conditioner is controlled to operate according to the output motor rotating speed, the T evaporator and the T evaporator target, and after the operation time is Q, the step S3 is executed. Through a SSD formula, the temperature, the relative humidity and the airflow speed in the room are continuously adjusted, so that the SSD value, the relative humidity and the wind speed are within the comfortable range, the body feeling is good, and the comfort degree is high.

The invention discloses an air conditioner. The air conditioner includes a shell body (1), an air outlet (2) is formed in the shell body (1), a flow guiding plate (3) is arranged in the shell body (1); when the flow guiding plate is in a working state, the flow guiding plate (3) extends out of the shell body (1) and is located on the lower side of the air outlet (2) to form a flow guiding effect;and when the flow guiding plate is in a non-working state, the flow guiding plate (3) is collected into the shell body (1). According to the air conditioner, the overall size of the air conditioner can be reduced while the air conditioner plays a flow guiding role and the miniaturization of the air conditioner can be realized.

The invention discloses a water-filtering air purification fan. The water-filtering air purification fan comprises a shell, the shell is provided with an air inlet and an air outlet; a liquid storagepart is arranged in the lower area of the shell, and a motor fan unit is arranged in the upper area of the shell and used for driving air to flow from the air inlet to the air outlet; the shell is contained to form an inner space, and the air inlet is kept in airflow communication with the air outlet through the inner space; and airflow partition plates are arranged in the inner space and divide the inner space into at least three partition chambers, airflow communication is kept among the partition chambers in sequence, and airflow communication is kept between the air inlet and the air outlet through the partition chambers in sequence. The water-filtering air purification fan has the functions of air purification and a fan at the same time, is low in energy loss, good in air purificationeffect, is not prone to blockage a filtering system, low in use cost, easy and convenient to disassemble and clean and suitable for multiple occasions due to the design of the partitioned water filter channel system.

The invention discloses an air conditioner air exhausting control method. An air conditioner comprises an upper air outlet, a lower air outlet, a fan corresponding to the upper air outlet and the lower air outlet, and an air guide mechanism which partially covers the fan; and the air guide mechanism is slidably connected into an air channel of the air conditioner so that the air exhausting volumeof the upper air outlet and the air exhausting volume of the lower air outlet can be adjusted. The air conditioner air exhausting control method comprises the following steps that the indoor temperature value and the set temperature value are obtained; the rotation angle of the air guide mechanism is determined according to the indoor temperature value, the set temperature value and the preset temperature threshold value; and the air guide mechanism is controlled to rotate at the rotation angle. The invention further discloses a control device of the air conditioner, the air conditioner and acomputer readable storage medium. The air exhausting volume of the upper air outlet and the air exhausting volume of the lower air outlet are controlled by the air guide mechanism, and on the premisethat the diversity of air exhausting modes of the air conditioner and the high human body comfort are ensured, the effect that the air exhausting volume of the upper air outlet and the air exhaustingvolume of the lower air outlet of the air conditioner are adjusted freely can be achieved.

The invention relates to an electric heating variable-temperature seat. The electric heating variable-temperature seat in the invention comprises a seat unit, a heating unit and a control unit; the seat unit comprises a seat body and a telescopic part; the heating unit comprises multiple heating parts; the multiple heating parts are respectively arranged on the seat body and the telescopic part; the control unit comprises a heating controller, a frequency converter and multiple temperature sensors arranged in the heating parts; and the telescopic part comprises two side plates and a bottom plate. When in use, the telescopic part is arranged in the front of the seat body; the two side plates and the bottom plate form a U-shaped space; the heating part comprises a heat preservation and insulation layer, an insulating layer, a heating layer, an insulating layer and a heat conduction layer, which are connected from top to bottom; the multiple heating parts are respectively arranged on thebackrest and the handrail in the seat body and the surfaces of the two side plates and the bottom plate; the heat preservation and insulation layer is contacted with the side plate surface or the bottom plate surface; the heat conduction layer is outwardly arranged; the heating layers and the multiple temperature sensors in the multiple heating parts are respectively connected with the heating controller; and the heating controller controls the heating temperature of the heating parts.