Refrigeration control method and device and air conditioner

A refrigeration control and air conditioner technology, applied in heating and ventilation control systems, heating methods, high-efficiency adjustment technology, etc., can solve the problems of reduced cooling capacity of indoor units, larger heat exchange temperature difference of condensers, and increased heat release during condensation, etc.

Active Publication Date: 2016-02-17
广东科龙嘉科电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is a problem that when the air conditioner is operating at a low temperature below the outdoor temperature of 0°C, due to the low outdoor ambient temperature, the heat transfer temperature difference of the condenser (that is, the condenser receives high-temperature and high-pressure gas from the compressor) The difference between the temperature of the refrigerant and the outdoor temperature) becomes larger, the heat release in the condensation process increases, and the high pressure does not rise, resulting in a smaller compression ratio of the compressor, which in turn leads to

Method used

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  • Refrigeration control method and device and air conditioner
  • Refrigeration control method and device and air conditioner
  • Refrigeration control method and device and air conditioner

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0038] Example 1

[0039] The embodiment of the present invention provides a refrigeration control method, which is applied to an air conditioner, such as figure 1 As shown, the method may specifically include:

[0040] S101. The refrigeration control device obtains the current value of the outdoor ambient temperature.

[0041] Among them, the refrigeration control device can monitor the outdoor ambient temperature in real time to obtain the current value of the outdoor ambient temperature; or, the refrigeration control device can periodically detect the temperature value of the outdoor ambient temperature according to a certain detection cycle, and set the refrigeration control device in The temperature value of the outdoor environment temperature detected in the detection period of the current time is taken as the current value of the outdoor environment temperature.

[0042] Exemplarily, the refrigeration control device may use temperature measuring instruments such as temperature ...

Example Embodiment

[0061] Example 2

[0062] The embodiment of the present invention provides a refrigeration control method, taking a specific refrigeration process of an air conditioner as an example for description, such as figure 2 As shown, the specific steps can include:

[0063] S201. The refrigeration control device obtains the current working mode of the air conditioner, and obtains the current value of the outdoor ambient temperature.

[0064] Optionally, the current working mode of the air conditioner may be reset after this time it is turned on, or it may continue the mode before it was turned off last time, which can be set according to actual needs.

[0065] S202: The refrigeration control device judges whether the current working mode of the air conditioner is a refrigeration mode.

[0066] Specifically, if the current working mode of the air conditioner is not the cooling mode, S203 is executed; if the current working mode of the air conditioner is the cooling mode, S204 is executed.

[00...

Example Embodiment

[0125] Example 3

[0126] The embodiment of the present invention provides a refrigeration control device, such as image 3 As shown, it may include: an acquiring unit 31, a first control unit 32, and a second control unit 33.

[0127] The obtaining unit 31 is configured to obtain the current value of the outdoor ambient temperature.

[0128] The first control unit 32 is configured to switch the compressor of the air conditioner when the current value of the outdoor ambient temperature acquired by the acquiring unit 31 is higher than the first preset temperature and the current value of the outdoor ambient temperature is lower than the second preset temperature The operating frequency is controlled within the first operating frequency interval; when the current value of the outdoor ambient temperature is higher than the second preset temperature, the compressor operating frequency of the air conditioner is controlled within the second operating frequency interval; the first preset te...

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Abstract

The embodiment of the invention discloses a refrigeration control method and device and an air conditioner and relates to the technical field of temperature control. It can be guaranteed that on the basis of reliability of the air conditioner, low-temperature refrigeration of the air conditioner is achieved. According to the specific scheme, the current value of the outdoor environment temperature is acquired, when the current value of the outdoor environment temperature is higher than a first preset temperature and lower than a second preset temperature, a compressor of the air conditioner is controlled to run under the frequency within a first running frequency interval, and an outdoor unit fan of the air conditioner is controlled to run at a rotating speed within a first rotating speed interval; and the frequency lower limit value of the first running frequency interval and the rotating speed upper limit value of the first rotating speed interval are running frequency of the compressor and the rotating speed of the outdoor unit fan respectively when the air conditioner performs refrigeration at the first preset temperature and the compression ratio of the compressor is at least the recommended compression ratio. The refrigeration control method and device are used in the temperature adjusting process of the air conditioner.

Description

technical field [0001] The invention relates to the technical field of temperature control, in particular to a refrigeration control method, device and air conditioner. Background technique [0002] An air conditioner is an air conditioner, which is a common household appliance that can usually have heating and cooling functions. [0003] Specifically, the refrigeration process of the air conditioner may include: compressing the low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant through a compressor; the high-temperature and high-pressure gaseous refrigerant is sent to the condenser of the outdoor unit for heat dissipation, and then becomes a high-pressure liquid refrigerant. The heat dissipated during the process from gaseous to liquid is discharged outdoors through the fan of the outdoor unit; after the liquid refrigerant enters the evaporator of the indoor unit after passing through a filter and a throttling device (such as an e...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCY02B30/70
Inventor 李达君尹坤常骞
Owner 广东科龙嘉科电子有限公司
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