The pressurized cold and hot compress therapy instrument is a medical device that combines cold, hot compress and pressurization, and can perform cold compress, hot compress and pressurization on the damaged tissue to achieve the effects of cooling, pain relief, bleeding and swelling. It acts on the surface of the human body, causes the vasoconstriction of the skin and internal organs through nerve conduction, changes the metabolism and blood circulation of the body to achieve the purpose of therapeutic effect. The pressurized cold and hot compress therapy instrument uses semiconductor refrigeration technology to control and set the temperature of the instrument through modular design, so as to realize rapid heating and cooling and improve operating efficiency.

The semiconductor refrigeration component is the key component of the pressurized cold and hot compress therapy device. The semiconductor refrigeration is a refrigeration method based on the thermoelectric phenomenon. It uses the principle of the "Peltier" effect to achieve the purpose of refrigeration. The main working principle of semiconductor refrigeration:

1) Input a DC current to the semiconductor refrigeration component to generate a temperature difference at both ends to form a cold end and a hot end.

2) Semiconductor refrigeration components need to dissipate heat while cooling to maintain efficient work. Usually, heat dissipation devices are used to dissipate the heat generated by the hot end.

3) By adjusting the magnitude of the input current, etc., the cooling and heating capacity can be precisely controlled and adjusted.

4) By adjusting the direction of the input current, the positions of the hot and cold ends can be exchanged.

Advantages of semiconductor refrigeration components applied in pressurized cold and hot compress therapeutic apparatus:

1) The temperature range and control accuracy are higher, which can better meet the treatment requirements.

2) The response speed is faster, and the temperature required for treatment can be quickly achieved.

3) The cooling efficiency is high, so that the cold energy can be quickly and stably transmitted to the skin, improving the therapeutic effect.

4) Semiconductor refrigeration is non-polluting, efficient and reliable, suitable for long-term use.

5) Modular design, easy to design and integrate different treatment structures.