Air conditioner oil return control method and device and air conditioner

A technology of oil return control and air conditioner, which is applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of increased power consumption, performance waste, and reduced energy efficiency of unit operation, and achieve the effect of improving energy efficiency in operation

Active Publication Date: 2019-02-22
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When in use, the oil return capillary is kept in a normally open state, which will inevitably lead to the refrigerant returning to the compressor through the oil return capillary under many operating conditions, resulting in waste of performance, increased power consumption, and reduced operating energy efficiency of the unit

Method used

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  • Air conditioner oil return control method and device and air conditioner
  • Air conditioner oil return control method and device and air conditioner
  • Air conditioner oil return control method and device and air conditioner

Examples

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no. 1 example

[0043] The embodiment of the present invention provides an air conditioner 1, which is used to adjust the indoor temperature, reduce the energy consumption of operation, and improve the efficiency. see figure 1 , is a functional block diagram of the air conditioner 1 provided by the embodiment of the present invention. The air conditioner 1 includes: a memory 3 , a controller 2 , a compressor 4 , a solenoid valve 5 , an oil return capillary, an oil separator, a temperature detection module 6 and an air conditioner oil return control device 7 . Wherein, the controller 2 is electrically connected with the memory 3, the temperature detection module 6, the compressor 4 and the solenoid valve 5, the oil return capillary is communicated with the oil separator through the solenoid valve 5, and the air conditioner oil return control device 7 includes at least one It may be stored in the memory 3 in the form of software or firmware.

[0044] The memory 3 can be used to store software...

no. 2 example

[0050] This embodiment provides a method for controlling the oil return of an air conditioner, which is used to control the oil return of the oil separator, so as to prevent the refrigerant from returning to the compressor 4 through the oil return capillary, resulting in waste of performance and increased power consumption. see figure 2 , figure 2 A schematic diagram of a method for controlling oil return of an air conditioner provided in this embodiment is shown, and the method for controlling oil return of an air conditioner includes the following steps: S10-S60.

[0051] Step S10: Calculate the oil discharge amount of the compressor 4 to the outside.

[0052] The compressor 4 needs compressor oil to lubricate its various components during operation. During the operation of the system, the compressor oil will be discharged from the compressor 4 together with the refrigerant (refrigerant), for example, to an oil separator. The external oil discharge amount of the compress...

no. 3 example

[0073] see Figure 4 , Figure 4 An air conditioner oil return control device 7 provided in a preferred embodiment of the present invention. It should be noted that the basic principles and technical effects of the air conditioner oil return control device 7 provided in this embodiment are basically the same as the air conditioner oil return control method provided in the second embodiment above. For a brief description, this embodiment For the parts not mentioned in the example part, reference may be made to the corresponding content in the above-mentioned embodiments.

[0074] The air conditioner oil return control device 7 includes an oil discharge calculation unit 8 , a judging unit 9 , a start oil return unit 10 , a temperature acquisition unit 11 , a temperature calculation unit 12 and a stop oil return unit 13 .

[0075] Wherein, the oil discharge amount calculation unit 8 is used for according to the oil discharge rate of the compressor 4, the operation frequency of ...

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Abstract

The invention provides an air conditioner oil return control method and device and an air conditioner. The air conditioner oil return control method comprises the steps that when the oil discharge amount in an oil separator reaches a preset value, an electromagnetic valve is started to return oil; the temperature of an oil return capillary tube after oil return is obtained; and when the temperature after the oil return and the preset theoretical oil return temperature meet the preset condition, the electromagnetic valve is turned off to stop returning the oil. According to the control method,the oil amount in the oil separator is subjected to detection and calculation, when the oil amount in the oil separator reaches the threshold value, the electromagnetic valve is started to return theoil through the oil return capillary tube, the temperature of the oil return capillary tube after the oil return is monitored, the actual oil return temperature is compared with the theoretical oil return temperature so that it can be effectively judged that a refrigerant passes through the oil return capillary tube, then the electromagnetic valve is turned off when the refrigerant passes throughthe oil return capillary tube, the situation that the excessive refrigerant passes through bypasses of the oil return capillary tube and goes back to a compressor for doing invalid work is avoided, then the running effect of an air conditioner unit is improved, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner oil return control method and device and an air conditioner. Background technique [0002] With the continuous progress of the economy, the application of air conditioners is becoming more and more extensive. Since the air conditioner can bring users a comfortable experience by adjusting the temperature of the indoor environment, the air conditioner has become one of the most common household appliances. [0003] For the inverter air conditioning system, in order to protect the reliability of the compressor, an oil separator and an oil return capillary are generally equipped. When in use, the oil return capillary is kept in a normally open state, which will inevitably lead to the refrigerant returning to the compressor through the oil return capillary under many operating conditions, resulting in waste of performance, increased power consumption, and r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B31/00F25B49/02
CPCF25B31/004F25B49/02F25B2500/16
Inventor 章秋平黄春刘合心李兆东任小辉
Owner NINGBO AUX ELECTRIC
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