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A high-temperature refrigeration control method, device, and air-conditioning equipment

A technology of high-temperature refrigeration and control method, which is applied in refrigerators, refrigeration components, mechanical equipment, etc. to achieve sufficient refrigeration capacity, improve user experience, and ensure the reliability of high-temperature refrigeration.

Active Publication Date: 2021-03-12
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a high-temperature refrigeration control method, device, and air-conditioning equipment to solve the problem of how to ensure reliable operation of refrigeration under high-temperature loads in the state of long-connected pipes for complete air conditioners in the prior art

Method used

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  • A high-temperature refrigeration control method, device, and air-conditioning equipment
  • A high-temperature refrigeration control method, device, and air-conditioning equipment
  • A high-temperature refrigeration control method, device, and air-conditioning equipment

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Embodiment 1

[0029] figure 1 It is a flow chart of the high-temperature refrigeration control method according to Embodiment 1 of the present invention, such as figure 1 As shown, the method includes the following steps:

[0030] Step S101, when the air conditioner is operating in cooling mode and the outdoor temperature exceeds a preset high temperature, detect the valve step of the electronic expansion valve and the exhaust temperature of the compressor; the above preset high temperature can generally be set to 52°C;

[0031] Step S102, determining stability maintenance parameters according to the valve step and exhaust temperature;

[0032] Step S103, if the stability maintenance parameter ≥ preset value, enter the stability maintenance control mode; if the stability maintenance parameter < preset value, operate in the normal control mode. When the stability maintenance parameter is less than the preset value, it means that the current valve step adjustment speed is not much different...

Embodiment 2

[0041] figure 2 It is a flow chart of the high-temperature refrigeration control method according to the second embodiment of the present invention. This embodiment is set to control and adjust the electronic expansion valve and the compressor under the high-temperature and high-load conditions in the refrigeration mode. Such as figure 2 As shown, the method includes the following steps:

[0042] 1) Turn on the air conditioner, detect the current setting mode of the air conditioner, detect that it is in cooling mode, and perform outdoor ambient temperature detection to detect whether the outdoor ambient temperature is ≥ 52°C.

[0043] 2) If the outdoor ambient temperature is ≥ 52°C, enter the high temperature control mode after starting up, otherwise control according to the normal mode.

[0044] 3) Detect the current frequency f of the compressor. If f≤30Hz, detect the initial valve step b1 of the electronic expansion valve, detect the valve step b2 of the electronic expa...

Embodiment 3

[0051] corresponds to figure 1 In the high-temperature refrigeration control method introduced, this embodiment provides a high-temperature refrigeration control device, such as image 3 The structural block diagram of the high-temperature refrigeration control device shown, the device includes:

[0052] The detection module 10 is used to detect the valve step of the electronic expansion valve and the discharge temperature of the compressor when the air conditioner operates in cooling mode and the outdoor temperature exceeds a preset high temperature;

[0053] The parameter calculation module 20 is used to determine the stability maintenance parameter according to the valve step and exhaust temperature;

[0054] The control module 30 is used to enter the stability maintenance control mode when the stability maintenance parameter is greater than or equal to the preset value; and to operate in the normal control mode when the stability maintenance parameter is < the preset valu...

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Abstract

The invention discloses a high temperature refrigeration control method and device and air conditioning equipment. The high temperature refrigeration control method comprises the following steps: whenthe air conditioning equipment operates in the refrigerating mode and the outdoor temperature exceeds the preset high temperature, detecting the valve step of an electronic expansion valve and the exhausting temperature of a compressor; determining the stability maintaining parameter according to the valve step and the exhausting temperature; if the stability maintaining parameter is equal to orgreater than a preset value, entering the stability maintaining control mode; and if the stability maintaining parameter is less than the preset value, operating according to the normal control mode.With adoption of the high temperature refrigeration control method, under the long connecting pipe state, the entire air conditioning equipment is enabled to operate reliably under high temperature load, the refrigerating capacity of the entire air conditioning equipment is ensured to be sufficient, the problem of high pressure protection or overload protection due to oil return in the high load state is avoided, the high temperature refrigerating reliability of the air conditioning equipment is greatly ensured, the refrigerating capacity under the high temperature working condition is ensuredto be larger, and the user experience is improved.

Description

technical field [0001] The invention relates to the field of unit technology, in particular to a high-temperature refrigeration control method, device and air-conditioning equipment. Background technique [0002] At present, the units exported to some regions in the Middle East have an increasing demand for cooling capacity under high-temperature conditions. When the outdoor ambient temperature reaches 52°C or higher, the reliability of the units under high-temperature conditions is particularly important, and reliability problems such as high-voltage protection must be avoided. , but also need to take into account the cooling capacity under high temperature conditions. [0003] Due to the demand for building space, a large number of users need to consider the installation method of long connecting pipes when using air conditioners. In order to achieve the cooling capacity corresponding to the standard connecting pipes, it is necessary to add the corresponding amount of refr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/89F24F11/64F25B49/02
CPCF25B49/022F24F11/64F24F11/89
Inventor 刘为爽鲍勇杨秋石王萍闫志斌温静
Owner GREE ELECTRIC APPLIANCES INC
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