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A multi-connected air-conditioning and hot water combined supply system and its control method

A multi-connected air conditioner and control method technology, applied in the direction of heating and cooling combination, refrigerator, refrigeration components, etc., can solve the problems of room cooling and less multi-connected units, and achieve the effect of easy frosting

Active Publication Date: 2021-10-26
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the transitional season, there will be some rooms that need cooling and some rooms that need to be heated. At present, there are few researches and applications on the simultaneous cooling and heating functions of multi-connected units for the transitional season.

Method used

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  • A multi-connected air-conditioning and hot water combined supply system and its control method
  • A multi-connected air-conditioning and hot water combined supply system and its control method
  • A multi-connected air-conditioning and hot water combined supply system and its control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] combine figure 1 , figure 2 , image 3 As shown, a multi-connected air-conditioning and hot water combined supply system includes a gas-liquid separator, a compressor, an oil separator, a gaseous refrigerant equalizer, a heat recovery module, an indoor heat exchange module, an outdoor heat exchange module, and a liquid storage tank; the gas-liquid separator, compressor, oil separator, and gaseous refrigerant equalizer are connected in series in sequence. The heat recovery module and the indoor heat exchange module are connected in parallel. There are several indoor heat exchange modules and outdoor heat exchange modules. In this implementation, there are two indoor heat exchange modules and two outdoor heat exchange modules. The two heat exchange modules and the two outdoor heat exchange modules are connected in parallel with each other, and their work is independent and does not interfere with each other.

[0048] The outlet of the gas-liquid separator is connected ...

Embodiment 2

[0057] Except the following technical features, all the other unmentioned technical features are the same as embodiment 1.

[0058] combine figure 1 , figure 2 , image 3 , Figure 4 As shown, when the above-mentioned multi-connected air-conditioning and hot water combined supply system is used, the following separate cooling control methods are included:

[0059] The third three-way valve is in the power-on state, the first three-way valve and the second three-way valve are in the power-off state, the first expansion valve is opened, and the second expansion valve is closed. After the refrigerant flows out of the compressor, it passes through the oil separator and the gaseous refrigerant equalizer in turn, and then enters the first valve port of the third three-way valve, the second valve port of the third three-way valve, the outdoor heat exchanger, and the second valve port of the third three-way valve. An outdoor branch pipe, the first tank pipe and then flows into th...

Embodiment 3

[0061] Except the following technical features, all the other unmentioned technical features are the same as embodiment 1.

[0062] combine figure 1 , figure 2 , image 3 , Figure 5 As shown, when using the above-mentioned multi-connected air-conditioning and hot water combined supply system, the following separate heating control methods are included:

[0063] The second three-way valve is in the power-on state, the first three-way valve and the third three-way valve are in the power-off state, the second expansion valve is opened, and the first expansion valve is closed. After the refrigerant flows out of the compressor, it passes through the oil separator and the gaseous refrigerant equalizer in sequence, and then passes through the first valve port of the second three-way valve, the second valve port of the second three-way valve, the indoor heat exchanger, and the second valve port of the second three-way valve. The second indoor branch pipe and the first tank pipe ...

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Abstract

The invention relates to a multi-connected air-conditioning and hot water combined supply system, including a gas-liquid separator, a compressor, an oil separator, a gaseous refrigerant equalizer, a heat recovery module, an indoor heat exchange module, an outdoor heat exchange module, and a liquid storage tank; the outlet of the gas-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the inlet of the oil separator, the outlet of the oil separator is connected to the inlet of the gaseous refrigerant equalizer, the indoor heat exchange module and the outdoor heat exchange module There are several modules. The present invention also relates to a control method for a multi-connected air conditioner and hot water joint supply system, including the following control methods: a control method for cooling alone; a control method for heating alone; a control method for cooling and heating water at the same time; heating and heating at the same time A control method for hot water; a control method with a defrosting function; a control method for simultaneous cooling and heating. The invention can freely combine the quantity according to the indoor load, flexibly control and realize multiple functions, and belongs to the technical field of the air conditioning system.

Description

technical field [0001] The invention relates to the technical field of air-conditioning systems, in particular to a multi-connected air-conditioning and hot water combined supply system and a control method thereof. Background technique [0002] With the rapid development of the economy and the improvement of people's quality of life, air-conditioning has also produced a negative impact when it brings people a comfortable environment-energy and environmental protection issues. With the rapid development of my country's construction industry, the proportion of total energy consumption has risen from 10% in the late 1970s to 27% to 48% in recent years, of which 2 / 3 are consumed by HVAC systems. Condensation heat recovery technology is proposed to solve the problem of single function of traditional air conditioning system, thermal pollution caused by condensation heat discharge and waste of primary energy. It can realize multiple functions for air conditioning system. In summer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B29/00F25B43/02F25B43/00F25B41/31F25B47/02F25B49/02
CPCF25B29/003F25B43/006F25B43/02F25B47/02F25B49/022F25B41/31
Inventor 唐兰孙艳红赵矿美黎清荐
Owner GUANGZHOU UNIVERSITY
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