CN212623773U - Heating temperature control device for comfortable chair cushion - Google Patents

Abstract

The utility model relates to the technical field of comfortable chair cushions, in particular to a heating temperature control device of a comfortable chair cushion, which comprises a cushion, a heating component and a controller, and also comprises a first temperature sensor arranged at the surface layer of the cushion and a second temperature sensor arranged inside the cushion and close to the heating component, wherein the heating component is connected with a thermistor system for controlling the upper limit value of the temperature, the first temperature sensor and the second temperature sensor are both connected with the controller, the controller controls the working state of the heating component according to the temperature data fed back by the first temperature sensor to maintain the temperature at the surface layer of the cushion constant, the second temperature sensor feeds back the monitored temperature data of the heating component to the controller, when the temperature at the heating component reaches the upper limit value of the temperature allowed by the thermistor system, the controller controls the heating component to stop heating, the temperature of the heating surface layer is stable, avoid appearing suddenly cold and suddenly hot phenomenon, the security is high.

Description

Heating temperature control device for comfortable chair cushion

Technical Field

The utility model relates to a comfortable chair cushion technical field, concretely relates to comfortable chair cushion heating temperature control device.

Background

An auxiliary function for improving the comfort of the seat when the cushion is heated. The cushion heating is realized by electrifying and heating a heating component arranged in the cushion. The comfortable chair is used as a special chair for relaxation, and the heating of the cushion is an important function.

A heating component is embedded in a cushion of the comfortable chair, and the heating component generates heat after being electrified to diffuse the temperature to the cushion. The heating temperature control of current comfortable chair is realized through the temperature control to heating element, for example, set for heating element's temperature value 40 ℃, heating element maintains 40 ℃ temperature, however, this temperature value is heating element self temperature, often after the heating element temperature reaches the setting value, the temperature of cushion is not up to standard, and, because heating element buries underground in the cushion, the temperature can be lost in the diffusion, and, for improving the travelling comfort, the thickness of cushion is thicker, lead to the inside and outside temperature distribution of cushion inequality, the inside temperature of cushion is high, and cushion top layer temperature is low, thereby lead to, the cushion heating function's of comfortable chair result in the result of use department difference. Often after the temperature of heating element has reached upper limit value and the back of stopping heating, the temperature of cushion top layer department has not reached the settlement temperature yet, leads to appearing the phenomenon of neglecting cold and neglecting hot, influences the use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to above-mentioned defect, provide a comfortable chair cushion heating temperature control device, cushion top layer temperature is steady, avoids appearing neglecting cold and neglecting hot phenomenon, and the security is high.

The utility model provides a technical scheme that its technical problem adopted as follows:

a heating temperature control device for a comfortable chair cushion comprises a cushion, a heating component arranged in the cushion and a controller for controlling the heating component to work, and is characterized by also comprising a first temperature sensor arranged on the surface layer of the cushion and a second temperature sensor arranged in the cushion and close to the heating component, wherein the heating component is connected with a thermistor system for controlling the upper limit value of temperature, the first temperature sensor and the second temperature sensor are both connected with the controller, the first temperature sensor feeds back the monitored temperature data of the surface layer of the cushion to the controller, the controller controls the working state of the heating component to maintain the constant temperature of the surface layer of the cushion according to the temperature data fed back by the first temperature sensor, the second temperature sensor feeds back the monitored temperature data of the heating component to the controller, when the temperature of the heating component reaches the upper limit value allowed by the thermistor system, the controller controls the heating assembly to stop heating.

The utility model has the advantages that: adopt above-mentioned scheme, two temperature sensor monitor cushion top layer temperature respectively, heating element department temperature, the effectual cushion that has solved and human body contact's top layer temperature can not reach the condition of predetermineeing the temperature, avoid heating element to reach thermistor protection system's limiting temperature, the effectual cushion phenomenon of neglecting cold and neglecting hot of having avoided, the cushion temperature can slowly promote, and can not promote with higher speed, the temperature control on cushion top layer is accurate, invariable, very big improvement performance, the control by temperature change is accurate and high-efficient, and, two temperature sensor are effectual to have kept better temperature interval, and the security is high, the effectual result of use that has improved.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

Fig. 1 is a connection block diagram of the present invention.

Fig. 2 is a schematic cross-sectional view of an embodiment of the temperature control device of the present invention.

Wherein: 1 is a heating component, 2 is a controller, 3 is a first temperature sensor, and 4 is a second temperature sensor.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1 and 2, a heating temperature control device for a comfortable chair cushion comprises a cushion, a heating assembly 1 arranged in the cushion, and a controller 2 for controlling the heating assembly 1 to work, wherein the heating assembly comprises a first temperature sensor 3 arranged on the surface layer of the cushion, and a second temperature sensor 4 arranged in the cushion and close to the heating assembly 2, the controller 2 can adopt an MCU, the first temperature sensor 3 and the second temperature sensor 4 are both connected with the controller 2, the first temperature sensor 3 is arranged on the surface layer of the cushion and can be arranged at the bottom side of leather on the cushion and at a place closely contacted with a human body, the heating assembly 3 adopts a heating cushion embedded in the cushion, the second temperature sensor 4 is arranged close to the heating assembly, a thermistor system for controlling the heating assembly to stop supplying power or working is connected in a power supply circuit of the heating assembly 3, the thermistor system can be a thermistor arranged in a circuit of the heating assembly, the higher the temperature of the heating component is, the larger the thermistor resistance is, when the temperature value of the heating component exceeds the upper limit value set by the thermistor system, the thermistor system controls the heating component to stop heating to avoid the overhigh temperature of the heating component, the first temperature sensor 3 feeds the monitored temperature data of the surface layer of the cushion back to the controller 2, the controller 2 controls the working state of the heating component 1 according to the temperature data fed back by the first temperature sensor 3 to maintain the temperature of the surface layer of the cushion constant in the set range, the second temperature sensor 4 feeds the monitored temperature data of the heating component back to the controller 2, when the temperature of the heating component is about to reach the upper limit value of the temperature allowed by the thermistor system, the controller 2 controls the heating component 1 to stop heating to protect the heating component and the cushion, improve the safety and avoid the occurrence of danger, the controller sets an excitation temperature value of the first temperature sensor and an excitation temperature value of the second temperature sensor.

Example 1: the excitation temperature value of the first temperature sensor 3 is set to be 45 ℃ through the controller 2, the excitation temperature value of the second temperature sensor 4 is set to be 75 ℃, the upper limit value of a thermistor system of the heating component 1 is 80 ℃, after the heating component 1 is started, the heating component 1 is powered on to generate heat, the heat is gradually transmitted to the surface layer of the cushion, when the temperature of the surface layer of the cushion reaches 45 ℃, the first temperature sensor 3 is excited, the monitored temperature data of the surface layer of the cushion is transmitted to the controller 2, the controller 2 controls the heating component 1 to stop heating or operate at low power, the temperature of about 45 ℃ is kept at the surface layer of the cushion, when the temperature of the surface layer of the cushion is reduced to be lower than 45 ℃, the first temperature sensor 3 sends a signal to the controller, the controller controls heating starting and heating, the temperature at the surface layer of the cushion is maintained, accurate temperature control and constant temperature control of the surface layer, the efficiency of full play cushion heating, at the in-process of heating element 1 work, second temperature sensor 4 monitors the temperature of heating element 1 department, when the temperature of heating element 1 department reaches 75 ℃, second temperature sensor 4 sends feedback signal to controller 2, controller control heating element stop operation, the temperature of avoiding heating element department reaches thermistor protection system's limited temperature, make heating element keep being in operating condition, but the high temperature can not appear, the thermistor protection system who avoids the high temperature to lead to cuts off the heating element power supply, cause the temperature to rise too slowly phenomenon, avoid cushion temperature to neglect cold and neglect hot.

This device can prevent that the cushion from appearing inside, heating element's high temperature, and the temperature on cushion top layer does not reach the problem of the suitable temperature value of settlement, second temperature sensor's temperature upper limit is less than heating element thermistor protection system's temperature upper limit, make the cushion temperature slowly promote, and can not promote with higher speed, it just pauses until cushion top layer temperature reaches the setting value, the temperature control on cushion top layer is accurate, invariable, very big improvement performance, the control by temperature change is accurate and high-efficient, and, two temperature sensor are effectual to have kept better temperature interval, and the security is high, in case the high temperature, thermistor protection system can start, cut off the power supply with heating element.

Example 2: the temperature control method and the device of the utility model can be applied to the backrest, the armrest, the headrest and other parts of the comfortable chair, and are used for heating and controlling the temperature of the backrest, the armrest and the headrest, and carrying out accurate temperature control on the leaning edge or the armrest.

Example 3: three temperature sensors can be arranged along the heating component to the surface layer of the cushion in the longitudinal direction of the cushion, and comprise a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor is arranged at the surface layer of the cushion and used for monitoring the temperature of the area contacted with the human body, the second temperature sensor is arranged at the heating component and used for monitoring the temperature of the heating component, the third temperature sensor is arranged in the cushion body of the cushion between the first temperature sensor and the third temperature sensor and used for monitoring the temperature of the cushion body at the position, the third temperature sensor feeds back the monitored temperature data of the cushion body to the controller, the temperature of the cushion body at the middle position is provided for the controller, the controller provides reference for controlling the working power of the heating sensor, monitors the temperature of the cushion body at different positions, and under the condition of ensuring that the temperature of the surface layer of the cushion is constant, the temperature is diffused from inside to outside, the temperature distribution at different positions is mastered, the accurate control of the heating assembly is promoted, and the energy consumption is reduced.

A heating temperature control method for a comfortable chair cushion comprises the following steps: monitoring the temperature of the surface layer of the cushion, feeding the monitored temperature data of the surface layer of the cushion back to the heating control system, controlling the working state of the heating component by the heating control system according to the fed temperature data of the surface layer of the cushion, keeping the temperature of the surface layer of the cushion stable, keeping the temperature of the surface layer not to reach a set value, continuously heating the heating component until the temperature of the surface layer of the cushion reaches the set value, stopping heating or running at low power after the temperature of the surface layer of the cushion reaches the set value, starting or running at high power when the temperature of the surface layer of the cushion is reduced, supplementing heat transfer, maintaining the stability of the temperature of the surface layer of the cushion within a set range, because the inside and outside temperatures of the cushion are different, the temperature of the inner layer of the cushion is higher than the outside temperature of the cushion, supplementing the temperature of the inner side of the cushion to, after starting, once the temperature of the surface layer of the cushion reaches a set value, the temperature of the surface layer of the cushion caused by starting and stopping of the heating group assembly or power change at the later stage can not be perceived by human bodies repeatedly, so that the method can realize accurate and stable control on the temperature of the surface layer of the comfortable chair and improve the use performance of comfort; meanwhile, the temperature of the heating component is monitored, the monitored temperature data of the heating component is fed back to the heating control system, once the temperature of the heating component is about to reach the upper limit value set by the temperature protection system of the heating component, the control system randomly controls the heating component to stop heating, the temperature protection system can adopt a temperature protection circuit formed by a thermistor, the temperature protection system is a final protection mechanism for heating the cushion, once the temperature is out of control, when the temperature reaches the set value of the temperature protection circuit, the temperature protection system is started to cut off the power supply of the heating component, the safety is improved, the control method can realize accurate, efficient and stable control of the surface temperature of the cushion, the heating temperature of the cushion is slowly increased, the phenomenon of neglect of heat and cold can be avoided for the conventional heating temperature control, the conventional temperature control system generally controls the temperature through the thermistor, in case the temperature of heating element department reaches thermistor's upper limit value, heating element notifies work at random, begins the cooling, and thermistor's temperature does not drop to the settlement temperature value, and heating element is unable work always, and the cushion temperature can appear undulantly, the phenomenon of neglecting cold and neglecting hot appears, and this control method can avoid appearing this phenomenon, realizes the stability of cushion top layer temperature, accurate control, simultaneously, avoids heating element to trigger hot face resistance protection system, improves the efficiency of heating.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.

Claims (2)

1. A heating temperature control device for a comfortable chair cushion comprises a cushion, a heating component arranged in the cushion and a controller for controlling the heating component to work, and is characterized by also comprising a first temperature sensor arranged on the surface layer of the cushion and a second temperature sensor arranged in the cushion and close to the heating component, wherein the heating component is connected with a thermistor system for controlling the upper limit value of temperature, the first temperature sensor and the second temperature sensor are both connected with the controller, the first temperature sensor feeds back the monitored temperature data of the surface layer of the cushion to the controller, the controller controls the working state of the heating component to maintain the constant temperature of the surface layer of the cushion according to the temperature data fed back by the first temperature sensor, the second temperature sensor feeds back the monitored temperature data of the heating component to the controller, when the temperature of the heating component reaches the upper limit value allowed by the thermistor system, the controller controls the heating assembly to stop heating.

2. A comfort seat cushion heating temperature control apparatus as set forth in claim 1, wherein said heating element is a heating pad.

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