Fresh air machine anti-freezing control method, fresh air machine and computer readable storage medium

A control method and technology for fresh air fans, applied in the fields of fresh air fans and computer-readable storage media, anti-freezing control of fresh air fans, to achieve the effect of preventing freezing risks

Pending Publication Date: 2022-02-18
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an anti-freezing control method for a fresh air machine, a fresh air machine and a computer...

Method used

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  • Fresh air machine anti-freezing control method, fresh air machine and computer readable storage medium
  • Fresh air machine anti-freezing control method, fresh air machine and computer readable storage medium
  • Fresh air machine anti-freezing control method, fresh air machine and computer readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0104] Please refer to Figure 4 , the fresh air blower anti-freezing control method includes:

[0105] Step S10, obtaining the exhaust air temperature in the exhaust air duct before passing through the total heat exchanger and the fresh air temperature in the fresh air duct before passing through the total heat exchanger;

[0106] Step S20, when the fresh air temperature is less than or equal to the freezing temperature, and the sum of the exhaust air temperature and the fresh air temperature is less than a first preset threshold, control the fourth heat exchange part to heat the exhaust air The air temperature in the tunnel, wherein the first preset threshold is greater than 0°C.

[0107] In this embodiment, the fresh air blower anti-frost control process is mainly started when the outdoor ambient temperature of the fresh air blower is relatively low. In scenarios where the outdoor ambient temperature is relatively low, it is generally necessary to heat the room. In order...

no. 2 example

[0125] This embodiment is based on the above-mentioned first embodiment, please refer to Figure 5 , Optionally, the third heat exchange part of the second heat exchange system is arranged in the fresh air duct. In this structural arrangement, if the conduction flow path of the second four-way valve is switched so that after the refrigerant comes out of the compressor, it first passes through the fourth heat exchange part for heat exchange, and the refrigerant will The third heat exchange part absorbs the heat of the fresh air in the fresh air duct, that is, cools down the fresh air duct. If the temperature of the fresh air in the fresh air duct is too low, when it is directly blown into the room, it is easy to cause the indoor temperature to be too low and affect the comfort of the indoor environment.

[0126] Based on this, in this embodiment, after switching the conduction flow path of the second four-way valve so that the refrigerant in the second heat exchange system is ...

no. 3 example

[0147] This embodiment is based on all the above embodiments, please refer to Image 6 In this embodiment, a first heat exchange part is also provided in the fresh air duct of the fresh air fan, and the first heat exchange part is used to heat the fresh air in the fresh air duct. Optionally, the first heat exchange part is disposed between the air outlet of the fresh air duct and the total heat exchanger, that is, the first heat exchange part is used to heat air passing through the total heat exchanger. Fresh air after heat exchange.

[0148] Optionally, see Figure 5 , the fresh air blower anti-freezing control method also includes:

[0149] Step S50, controlling the first heat exchange part to heat the fresh air in the fresh air duct.

[0150] It can be understood that the first heat exchange part may be an electric auxiliary heat device, such as a heating wire. It can also be a condenser in a heat pump system.

[0151] For example, the fresh air fan further includes a ...

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PUM

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Abstract

The invention discloses a fresh air machine anti-freezing control method, a fresh air machine and a computer readable storage medium, the fresh air machine comprises a fresh air duct, an exhaust air duct and a total heat exchanger, air in the fresh air duct and air in the exhaust air duct are subjected to heat exchange at the position of the total heat exchanger, and a fourth heat exchange part is arranged in the exhaust air duct. The method comprises the steps that the exhaust air temperature before passing through the total heat exchanger in the exhaust air duct and the fresh air temperature before passing through the total heat exchanger in the fresh air duct are obtained; and when the fresh air temperature is smaller than or equal to the freezing temperature and the sum of the exhaust air temperature and the fresh air temperature is smaller than a first preset threshold value, the fourth heat exchange part is controlled to heat the air temperature in the exhaust air duct, and the first preset threshold value is larger than 0 DEG C. The effect of effectively preventing the frosting risk of the total heat exchanger is achieved.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to an anti-freezing control method for a fresh air fan, a fresh air fan and a computer-readable storage medium. Background technique [0002] With the outbreak of the new crown epidemic and the improvement of people's quality of life, the requirements for the indoor environment are not only hot and cold, but also rise to the demand for health, which puts forward higher requirements for freshness and cleanliness. Fresh air is an effective and important solution. The scheme is being applied more and more. Since the introduction of fresh air will bring load to the indoor environment, a total heat exchanger is introduced in the fresh air unit to recover energy from the indoor exhaust air, so as to perform heat exchange treatment on the fresh air and reduce the load on the indoor environment. [0003] However, in the process of use, it was found that when this fresh air uni...

Claims

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Application Information

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IPC IPC(8): F24F11/43F24F11/64F24F11/84F24F11/86F24F1/0035F24F1/0063F24F110/10
CPCF24F11/43F24F2110/10
Inventor 徐振坤李金波杜顺开黄剑云高卓贤刘步东
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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