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Air conditioner low temperature refrigeration control method, control device and air conditioner

A refrigeration control and air conditioner technology, which is applied in the field of air conditioners, control devices, and low-temperature refrigeration control methods for air conditioners, which can solve problems such as liquid shock and low return air temperature, and achieve the effects of avoiding too low temperature and accurate condition determination

Active Publication Date: 2022-05-06
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most air conditioners cannot meet this function, and air conditioners with low-temperature refrigeration functions are developed separately
In the conventional low-temperature refrigeration method, the external fan continues to work without stopping, the heat exchange is fast, the return air temperature is too low, and the return air may carry liquid, resulting in liquid shock

Method used

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  • Air conditioner low temperature refrigeration control method, control device and air conditioner
  • Air conditioner low temperature refrigeration control method, control device and air conditioner
  • Air conditioner low temperature refrigeration control method, control device and air conditioner

Examples

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no. 1 example

[0052] Based on this problem, an embodiment of the present invention provides a method for controlling low-temperature cooling of an air conditioner. see Figure 1-2 , which is a control flow chart of the low-temperature refrigeration control method of the air conditioner, for example, including the following steps:

[0053] Sp1: Determine whether the air conditioner meets the low-temperature cooling opening conditions, and if so, enter the low-temperature cooling mode;

[0054] Sp2: In the low-temperature refrigeration mode, judge whether the initial setting conditions of the outdoor unit are satisfied, and if so, control the outdoor unit to run at the initial speed S;

[0055] Sp3: detecting whether the air conditioner satisfies the low-temperature cooling protection condition, and if so, adjusting the rotation speed of the outdoor unit.

[0056] It should be noted that the outdoor unit adopts a DC motor, and the DC motor can realize multi-speed rotation speed, so as to re...

no. 2 example

[0105] see Image 6 , the second embodiment of the present invention provides a low-temperature refrigeration control device 100, including: a temperature acquisition module 110, used to acquire the outdoor unit controller module temperature T mk , The current outdoor unit evaporator coil temperature T dw , outside ambient temperature T 0 , initial exhaust temperature T p0 , the current exhaust temperature T p1 , Ambient temperature T of the internal machine nh and internal unit coil temperature T np The condition judging module 120 is used to judge the low-temperature refrigeration opening condition, the outdoor unit initial setting condition, the low-temperature refrigeration protection condition, the rotational speed determination condition, the first outdoor unit opening condition, the second outdoor unit opening condition, the outdoor unit The stop condition and the condition for preventing the temperature of the inner disk from being too low; the control module 130 ...

no. 3 example

[0109] see Figure 8 , the third embodiment of the present invention provides an air conditioner 200, including: the low-temperature refrigeration control device 100 described in the second embodiment, a computer-readable storage medium 210 storing a computer program and a packaging IC 220, the computer program is packaged When the IC220 reads and runs, the air conditioner 200 realizes the low-temperature refrigeration control method of the air conditioner as described in the first embodiment through the low-temperature refrigeration control device 100 .

[0110] The packaged IC 220 in this embodiment is, for example, a processor chip, and the processor chip is electrically connected to the computer-readable storage medium 210 to read and execute the computer program. The packaged IC 220 may also be a packaged circuit board, and the circuit board is packaged with a processor chip capable of reading and executing the computer program; of course, the circuit board may also packa...

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Abstract

The invention provides an air conditioner low-temperature refrigeration control method, a control device and an air conditioner. The low-temperature refrigeration control method of the air conditioner includes: judging whether the air conditioner meets the low-temperature refrigeration opening condition, and if so, entering the low-temperature refrigeration mode; in the low-temperature refrigeration mode, judging whether the initial setting condition of the outdoor unit is met, and if so, Then control the outdoor unit to run at the initial speed S; detect whether the air conditioner satisfies the low-temperature refrigeration protection condition, and if so, adjust the speed of the outdoor unit. The embodiment of the invention solves the problem of liquid hammer caused by the continuous operation of the external fan in the low-temperature refrigeration of the air conditioner, causing the return air to carry liquid.

Description

technical field [0001] The invention relates to the technical field of air-conditioning control, in particular to an air-conditioner low-temperature refrigeration control method, a control device and an air-conditioner. Background technique [0002] At present, air conditioners are widely used in thousands of households, and their use occasions are becoming more and more diverse, and users have wider requirements for their use and work scope. For example, low-temperature refrigeration at -15°C, the application scenario of the air conditioner is: the outdoor temperature is usually below zero, but the indoor temperature is relatively high, generally such as conference rooms, kitchens, or computer rooms, which are relatively airtight places that do not need to open windows for ventilation. At present, most air conditioners cannot meet this function, and the air conditioners with low-temperature refrigeration function are developed separately. In the conventional low-temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/41F24F11/64F24F11/65F24F11/871F24F11/88F24F110/10F24F110/12F24F140/20
CPCF24F11/41F24F11/64F24F11/65F24F11/871F24F11/88F24F2110/10F24F2110/12F24F2140/20
Inventor 刘怿宁甘永健吕阳
Owner NINGBO AUX ELECTRIC
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