Refrigeration control method and device and refrigeration equipment

A refrigeration equipment and refrigeration control technology are applied in the fields of devices, refrigeration equipment, and refrigeration control methods to achieve the effects of being less prone to frost formation, reducing frost formation, and avoiding performance loss.

Active Publication Date: 2021-01-29
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a refrigeration control method, device, and refrigeration equipment to at least solve the problem of how to effectively reduce the frosting of the evaporator

Method used

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  • Refrigeration control method and device and refrigeration equipment
  • Refrigeration control method and device and refrigeration equipment
  • Refrigeration control method and device and refrigeration equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This embodiment provides a refrigeration control method, which can effectively reduce frosting of refrigeration equipment and improve refrigeration energy efficiency and reliability.

[0046] figure 1 It is a flow chart of the refrigeration control method provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, the method includes the following steps:

[0047] S101. Monitor the actual temperature of the target space.

[0048] S102. When the actual temperature is greater than the first preset temperature, control the refrigeration device to enter the rapid cooling mode, and control the opening of the electronic expansion valve during the rapid cooling process to maintain the evaporation temperature at the second preset temperature.

[0049] S103. When the actual temperature is less than or equal to the first preset temperature, control the opening of the electronic expansion valve so that the evaporation temperature is greater than the dew poin...

Embodiment 2

[0072] The above refrigeration control method will be described below in conjunction with a specific embodiment, however, it should be noted that this specific embodiment is only for better illustrating the present application and does not constitute an improper limitation to the present application. Explanations of terms that are the same as or corresponding to those in the foregoing embodiments will not be repeated in this embodiment.

[0073] combine figure 2 refrigeration unit shown, refer to image 3 , taking the cold storage unit as an example, the refrigeration control method to reduce frosting includes the following steps:

[0074] S301, start refrigeration.

[0075] S302. Determine whether the storage temperature is greater than Tk-max (that is, the first preset temperature), if yes, go to step S303, if not, go to step S309.

[0076] S303, controlling the cold storage unit to enter a temperature pulling state with a large temperature difference.

[0077] S304, ju...

Embodiment 3

[0096] Based on the same inventive concept, this embodiment provides a refrigeration control device, which can be used to implement the refrigeration control method described in the above embodiments. The device can be realized by software and / or hardware, and generally the device can be integrated into the controller of the refrigeration equipment.

[0097] Figure 4 It is a structural block diagram of the refrigeration control device provided by Embodiment 3 of the present invention, as shown in Figure 4 As shown, the device includes:

[0098] A monitoring module 41, configured to monitor the actual temperature of the target space;

[0099] The first control module 42 is used to control the refrigeration equipment to enter the rapid cooling mode when the actual temperature is greater than the first preset temperature, and control the opening of the electronic expansion valve during the rapid cooling process to maintain the evaporation temperature at the second preset temp...

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PUM

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Abstract

The invention discloses a refrigeration control method and device and refrigeration equipment. The method comprises the steps that the actual temperature of target space is monitored; when the actualtemperature is larger than the first preset temperature, the refrigeration equipment is controlled to enter a rapid cooling mode, and the opening degree of an electronic expansion valve is controlledin the rapid cooling process so that the evaporation temperature can be maintained at the second preset temperature; and when the actual temperature is smaller than or equal to the first preset temperature, the opening degree of the electronic expansion valve is controlled so that the evaporation temperature can be larger than the return air dew point temperature. Rapid cooling refrigeration is carried out under the high-temperature working condition, it is guaranteed that the evaporation temperature is kept at the second preset temperature without frosting, the evaporation temperature is controlled to be larger than the return air dew point temperature under the low-temperature working condition, frosting is not likely to happen, meanwhile, the dew point temperature can be reduced throughrapid cooling refrigeration, so that the condition that the evaporation temperature is larger than the return air dew point temperature can be met more easily under the low-temperature working condition, frosting of the evaporator in the refrigerating process is effectively reduced, the efficient refrigerating time is prolonged, frequent defrosting is avoided, and the energy efficiency and reliability are improved.

Description

technical field [0001] The present invention relates to the technical field of refrigeration control, in particular to a refrigeration control method, device and refrigeration equipment. Background technique [0002] The finned coil heat exchanger of the air cooler for refrigeration is used as an evaporator in the cold storage. Due to the low evaporation temperature, the temperature on the surface of the coil will be relatively low. When the surface temperature of the coil is lower than 0°C and the air in the cold storage contacts the coil driven by the fan, the moisture contained in the air will precipitate and adhere to the surface of the coil to form a frost layer. With the excessive thickening of the frost layer, the performance of the unit will decrease and the reliability will decrease. [0003] At present, defrosting is generally carried out after frosting, and no effective solution has been proposed for the problem of how to effectively reduce the frosting of the ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02F25B47/00F25B41/31F25B43/00
CPCF25B43/00F25B47/006F25B49/02
Inventor 刘家豪杨虹李升航叶梓健周逢杭张正
Owner GREE ELECTRIC APPLIANCES INC
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