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Indoor heat exchanger pressure control of air conditioner and its target pressure calculating method

An indoor heat exchanger and pressure control technology, applied in fluid pressure control, heating mode, adaptive control and other directions, can solve the problem of inability to effectively cope with indoor and outdoor unit loads, and achieve the effect of improving efficiency

Inactive Publication Date: 2007-06-27
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the prior art compound air conditioner, since the indoor / outdoor temperature difference is not considered, the same pressure is always maintained under all temperature conditions, so that it operates excessively under overload conditions and will not be able to Effectively cope with the load of the above indoor and outdoor units
[0009] This shows that above-mentioned existing composite air conditioner still has many defectives, and Cheng waits to be improved

Method used

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  • Indoor heat exchanger pressure control of air conditioner and its target pressure calculating method
  • Indoor heat exchanger pressure control of air conditioner and its target pressure calculating method
  • Indoor heat exchanger pressure control of air conditioner and its target pressure calculating method

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Embodiment Construction

[0038] Below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, features and effects of the present invention will be described in detail as follows.

[0039] ***Description of symbols in the main parts of the drawings***

[0040] 11, 12, 13, 14: indoor unit 21, 22: outdoor unit

[0041] 51: Indoor heat exchanger 54: Indoor electronic expansion valve

[0042] 61: Accumulator 62: Reversing compressor

[0043] 63: Fixed speed compressor 64: Oil separator

[0044] 65: Square valve 66: Capillary

[0045] 70: Outdoor heat exchanger 74: Outdoor electronic expansion valve

[0046] 80: Subcooler 82: Subcooler

[0047] 84: Bypass piping 85: Check valve

[0048] 86: Electronic expansion valve 87: Recovery piping

[0049] 90: Liquid injection device

[0050]101, 102, 103, 104, 105, 106: temperature sensor

[0051] Please refer to Fig. 1, shown in Fig. 2, compound type air conditioner among the present invention is con...

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Abstract

The control method includes following steps: inputting referenced low pressure stored in the control part in advance; after detecting indoor / outdoor temperatures by temperature sensors installed in indoor machine and outdoor machine, receiving the detected indoor / outdoor temperatures (Tin' / Tout'); under condition of temperature of referenced low pressure, calculating out the factor based on temperature difference between sum of indoor / outdoor temperatures (Tin / Tout) and sum of detected indoor / outdoor temperatures (Tin' / Tout'); using sum of the factor and referenced low pressure to calculate out target pressure; inputting the target pressure calculated out to the control part, and controlling low pressure of the indoor heat exchanger. The invention raises efficiency of composition type air conditioner.

Description

technical field [0001] The present invention relates to an air conditioner, more specifically to an invention in terms of the pressure control of the indoor heat exchanger and the calculation method of the target pressure of the air conditioner for setting the target pressure of the indoor heat exchanger according to the indoor / outdoor temperature. Background technique [0002] A conventional hybrid air conditioner is composed of one or more outdoor units and a plurality of indoor units, and the plurality of indoor units and the outdoor units are connected through refrigerant piping. [0003] Fig. 5 is a simple structural diagram of an outdoor unit of a hybrid air conditioner in the prior art. [0004] As shown in Figure 5, the outdoor unit of the composite air conditioner in the prior art includes the following parts: a liquid accumulator 1, which extracts only gaseous refrigerant from the refrigerant supplied by the indoor unit; a compressor 2, which The gaseous refrigera...

Claims

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Application Information

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IPC IPC(8): G05D16/02G05B13/00F24F11/00
Inventor 金柱祥
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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