CN112386395A

CN112386395A - Temperature control device of sub-low temperature therapeutic instrument

Info

Publication number: CN112386395A
Application number: CN202011339481.0A
Authority: CN
Inventors: 韩日华; 常闯; 吕瑜; 张君
Original assignee: Zhuhai Hokai Medical Instruments Co ltd
Current assignee: Zhuhai Hokai Medical Instruments Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-02-23

Abstract

The invention discloses a temperature control device for a sub-low temperature therapeutic apparatus, comprising a water tank, a refrigeration module, a heating module, a temperature measurement module, a control module and an interaction module, wherein the refrigeration module, the temperature measurement module and the interaction module are respectively connected with the control module, The refrigeration module is connected to the water tank through a conduit, and the temperature measurement module and the heating module are arranged in the water tank and are respectively connected to the control module. Through the control system, by adjusting the start-stop and output power of the cooling module and the heating module, the cooling and heating can be opposed to achieve the purpose of maintaining the liquid temperature within the target temperature range of ±0.2 °C, and the cooling module can be controlled by controlling the cooling module. Continuous work can reduce the start and stop of the refrigeration module and prolong the life of the machine. The heating module is directly placed inside the water tank, and can directly adjust the temperature of the liquid in the water tank, thereby reducing heat loss and improving thermal efficiency.

Description

Temperature control device of sub-low temperature therapeutic instrument

Technical Field

The invention relates to the field of temperature control, in particular to a temperature control device of a sub-low temperature therapeutic apparatus.

Background

The clinical application research result shows that the sub-low temperature treatment technology can obviously reduce the death rate of patients with the middle-sized craniocerebral injury, improve the neural function prognosis of the patients with the craniocerebral injury and does not generate serious complications. At present, some hospitals at home and abroad classify the sub-hypothermia treatment as a conventional treatment method for patients with severe craniocerebral injuries.

In the sub-hypothermia treatment, the refrigeration method adopted by the sub-hypothermia treatment instrument mainly comprises the following two methods: firstly, semiconductor refrigeration; and secondly, refrigerating by a compressor. The semiconductor refrigeration has the problem of low refrigeration efficiency, and the maximum refrigeration efficiency is only 0.6. The refrigeration performance shows nonlinear change along with factors such as environment temperature, voltage, thickness of a cold-conducting block, cold-end heat dissipation mode, mechanical pressure, heat-conducting phase-change material and the like, and the refrigeration performance is not very widely used at present; the refrigeration mode of the compressor is widely applied at present due to the advantages of high efficiency, energy conservation and environmental protection. The refrigeration compressor commonly used by the sub-low temperature therapeutic apparatus is a positive displacement compressor, the positive displacement compressor has good working stability, strong adaptability and high thermal efficiency, but frequent starting and stopping of the compressor can shorten the service life of the compressor, easily cause equipment failure and hardly achieve accurate temperature control.

Chinese patent publication No. CN203988615U discloses a sub-low temperature therapeutic apparatus which can provide therapy conveniently and quickly and does not occupy space. The sub-low temperature therapeutic apparatus comprises an apparatus body, a display screen and a master control panel which are arranged on the apparatus body, and a circuit board, a water tank, a cooling device, a heating device and a heat dissipation device which are arranged in the apparatus body. The bottom of the water tank is respectively connected with the cooling device and the heating device, so that the water in the water tank is cooled and heated to adjust the water temperature. However, this patent document does not disclose a technique for overcoming the problem that the service life of the compressor is shortened due to frequent start and stop of the compressor, and the equipment is broken down.

Disclosure of Invention

The invention provides a temperature control device of a sub-low temperature therapeutic apparatus, which can avoid frequent start and stop of a compressor so as to accurately control the liquid temperature of the sub-low temperature therapeutic apparatus. The invention is realized by the following technical scheme:

a temperature control device of a sub-low temperature therapeutic apparatus comprises a water tank, a refrigeration module, a temperature measurement module, a control module and an interaction module, wherein the refrigeration module, the temperature measurement module and the interaction module are respectively connected with the control module; the method is characterized in that: the heating module is arranged in the water tank and is respectively connected with the control module.

Through the technical scheme, the control system enables refrigeration and heating to form countermeasures by adjusting the starting, stopping and output power of the refrigeration module and the heating module, achieves the aim of maintaining the liquid temperature within the range of +/-0.2 ℃ of the target temperature, can reduce the starting, stopping and prolonging the service life of the machine by controlling the refrigeration module to continuously work. The heating module is directly arranged in the water tank, so that the temperature of liquid in the water tank can be directly adjusted, the heat loss is reduced, and the heat efficiency is improved.

As a further improvement of the invention, the water tank further comprises an internal circulation module, wherein the internal circulation module is arranged in the water tank and is connected with the control module.

As a further improvement of the invention, the refrigeration module comprises a compressor, and the compressor and the control module are started and stopped synchronously.

As a further improvement of the present invention, the refrigeration module further comprises a heat exchanger disposed in the water tank and connected to the compressor through a conduit.

As a further improvement of the present invention, the refrigeration module further comprises a heat exchanger disposed outside the water tank, and the heat exchanger is connected to the water tank through a conduit.

As a further improvement of the invention, the temperature measuring module comprises a temperature sensitive diode, the temperature sensitive diode is connected with the control module, and the temperature sensitive diode is arranged in the water tank.

As a further improvement of the present invention, the interactive module comprises a display module and a keyboard module, and the display module and the keyboard module are respectively connected with the control module.

As a further improvement of the invention, the interaction module comprises a display module and a keyboard module, the display module is connected with the control module, and the keyboard module is connected with the display module.

As a further improvement of the invention, the interaction module comprises a touch display screen, and the touch display screen is connected with the control module.

As a further improvement of the invention, the control module comprises an STM32F407 chip, and the STM32F407 chip is used as a main control chip.

Drawings

Fig. 1 is a schematic view of a heat exchanger of a temperature control device of a sub-hypothermia therapeutic apparatus provided by an embodiment of the invention, which is located outside a water tank.

Fig. 2 is a schematic diagram of a heat exchanger of a temperature control device of a sub-hypothermia therapeutic apparatus according to an embodiment of the present invention disposed in a water tank.

Detailed Description

The following description of the embodiments of the present invention will be further described with reference to the accompanying drawings, wherein for the purpose of facilitating explanation, the upper, lower, left, right, front, rear, etc. orientations may be defined in the application, and the definitions are intended to facilitate clear description of the relative positions of the structures, and are not intended to limit the actual orientations of the products during the manufacturing, use, sale, etc. The following further describes embodiments of the present invention with reference to the accompanying drawings:

referring to fig. 1 and 2, the present embodiment provides a temperature control device for a sub-low temperature therapeutic apparatus, which includes a water tank, a refrigeration module, a heating module, an internal circulation module, a temperature measurement module, a control module, and an interaction module.

The control module uses STM32F407 as a main control chip, the main control chip is provided with an ADC chip, the refrigeration module comprises a compressor and a heat exchanger, the temperature measurement module comprises a temperature sensitive diode, and the interaction module comprises a display module and a keyboard module.

The refrigeration module, the heating module and the internal circulation module are respectively connected with the control module. And the temperature sensitive diode of the temperature measurement module is connected to the ADC chip of the control module through a lead. The display module is connected with the control module through a serial port cable and is in data communication with the control module, the keyboard module is connected with the display module, and as other realizable schemes, the keyboard module can be connected with the control module; the display module can also be a touch display screen and is connected with the control module. The compressor and the heat exchanger of the refrigeration module are arranged outside the water tank, the heat exchanger is connected with the water tank through a conduit, as other realizable schemes, the heat exchanger can also be arranged inside the water tank, and the compressor is connected with the heat exchanger through a conduit. And the temperature-sensitive diodes of the heating module, the internal circulation module and the temperature measuring module are arranged in the water tank.

Before the sub-low temperature therapeutic apparatus works, 4000ml of pure water and 500ml of 95% ethanol solution are added into the water tank. The keyboard module is used for setting the target temperature of the water tank, working parameters (set water temperature, real-time water temperature, system state and the like) of the sub-low temperature therapeutic apparatus are displayed on the display module, the internal circulation module is started, and the sub-low temperature therapeutic apparatus is started.

In the working process of the sub-low temperature therapeutic apparatus, the service life of the compressor is shortened to avoid frequent start and stop of the compressor, so that equipment faults are caused. The refrigeration module keeps continuous full-power operation in the whole working process of the sub-low temperature therapeutic apparatus, the control module receives the temperature of liquid in the water tank detected by the temperature measurement module in real time, and adjusts the starting, stopping and output power of the heating module to enable refrigeration and heating to be in opposition, and when the temperature of the liquid in the water tank is lower than a set temperature, the heating module is started to heat the liquid in the water tank; and when the liquid temperature is higher than the set temperature, stopping the heating module, and maintaining the liquid temperature within the range of +/-0.2 ℃ of the set target temperature.

The refrigeration module keeps continuous full-power operation in the whole working process of the sub-low temperature therapeutic apparatus, and in a continuous working period, the compressor only needs to complete one-time starting and stopping action, so that the problem that the service life of the compressor is shortened due to frequent starting and stopping of the compressor, and equipment failure is easily caused can be effectively avoided. The heating module is arranged in the water tank and directly heats liquid in the water tank, so that energy loss in the heat transfer process is reduced, and the heating efficiency is improved. Through setting up the inner loop module, circulate liquid in the water tank is inside, overcome the condition that liquid temperature is different everywhere in the water tank that leads to because heat conduction is bad, avoid carrying the liquid temperature to using the position to appear undulantly among the treatment.

The above embodiments are merely provided for full disclosure and not for limitation, and any replacement of equivalent technical features based on the gist of the present invention without creative efforts should be considered as the scope of the present disclosure.

Claims

1. a sub-low temperature therapeutic apparatus temperature control device, comprising a water tank, a refrigeration module, a temperature measurement module, a control module and an interaction module, the refrigeration module, the temperature measurement module, and the interaction module are respectively connected with the control module, and the refrigeration module passes through. The conduit is connected with the water tank, and the temperature measurement module is arranged in the water tank; it is characterized in that it further includes a heating module, which is arranged in the water tank and is respectively connected with the control module.

2 . The temperature control device according to claim 1 , further comprising an inner circulation module, wherein the inner circulation module is arranged in the water tank and is connected with the control module. 3 .

3 . The temperature control device according to claim 1 , wherein the refrigeration module comprises a compressor, and the compressor starts and stops synchronously with the control module. 4 .

4 . The temperature control device according to claim 3 , wherein the refrigeration module further comprises a heat exchanger, and the heat exchanger is arranged in the water tank and is connected to the compressor through a conduit. 5 .

5. The temperature control device according to claim 1 or 3, wherein the refrigeration module further comprises a heat exchanger, the heat exchanger is arranged outside the water tank, and the heat exchanger and the water tank pass through a conduit connect.

6 . The temperature control device according to claim 1 , wherein the temperature measuring module comprises a temperature-sensitive diode, the temperature-sensitive diode is connected to the control module, and the temperature-sensitive diode is placed in the water tank. 7 . .

7 . The temperature control device according to claim 1 , wherein the interaction module comprises a display module and a keyboard module, and the display module and the keyboard module are respectively connected to the control module. 8 .

8 . The temperature control device according to claim 1 , wherein the interaction module comprises a display module and a keyboard module, the display module is connected to the control module, and the keyboard module is connected to the display module. 9 .

9 . The temperature control device according to claim 1 , wherein the interaction module comprises a touch-type display screen, and the touch-type display screen is connected to the control module. 10 .

10 . The temperature control device according to claim 1 , wherein the control module comprises an STM32F407 chip, and the STM32F407 chip is used as the main control chip. 11 .