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Air conditioning device

An air conditioning and control device technology, applied in space heating and ventilation, gas circulation refrigerators, heating methods, etc., can solve the problems of higher blowing temperature, affecting user comfort, lowering blowing temperature, etc. energy effect

Active Publication Date: 2012-04-18
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the blowing temperature at the start of heating becomes low, or the blowing temperature at the start of cooling becomes high, which affects the comfort of the user.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0018] figure 1 It is a system circuit diagram of the air-conditioning apparatus in Embodiment 1 of this invention. In the air-conditioning apparatus according to Embodiment 1, the compressor 10, the four-way valve 11 as a refrigerant flow switching device, the heat source side heat exchanger 12, the heat exchangers related to heat medium 14a, 14b, the electronic expander Expansion devices 15a, 15b such as valves, and an accumulator 16 constitute a refrigeration cycle. Refrigerant circulates in the refrigeration cycle. Here, the heat exchanger related to heat medium 14a corresponds to the first heat exchanger related to heat medium. The heat exchanger related to heat medium 14b corresponds to the second heat exchanger related to heat medium. Furthermore, the expansion device 15a corresponds to the first expansion device, and the expansion device 15b corresponds to the second expansion device.

[0019] In addition, between the heat medium converter 3 and the use-side heat e...

Embodiment approach 2

[0110] Figure 7 It is a system circuit diagram showing the refrigerant side circuit of the air-conditioning apparatus according to Embodiment 2 of the present invention. In Embodiment 2, check valves 13a, 13b, 13c, and 13d are provided in the heat source machine 1, and other structures are the same as those in Embodiment 1. Hereinafter, the differences between Embodiment 2 and Embodiment 1 will be mainly described.

[0111] During the heating only operation and the heating main operation, the refrigerant passing through the four-way valve 11 flows into the heat medium relay unit 3 through the check valve 13b. In addition, during the cooling only operation and the cooling main operation, the refrigerant flowing out of the heat source side heat exchanger 12 flows into the heat medium relay unit 3 through the check valve 13 a. In addition, the refrigerant flowing out of the heat medium converter 3 and returning to the heat source unit 1 passes through the check valve 13c and f...

Embodiment approach 3

[0115] In the refrigerant side circuits of Embodiments 1 and 2 above, the heat exchangers related to heat medium (14a, 14b) are arranged so that the refrigerant flows in series on the heat source unit 1 side, but in Embodiment 3, in the heating only operation, In the cooling only operation, the refrigerant is arranged so that the two heat exchangers related to heat medium 14a, 14b flow in parallel. In addition, during the heating-main operation and the cooling-main operation, the arrangement is such that part of the refrigerant flowing into the heat medium converter 3 from the heat source unit 1 flows in series in the heat exchangers 14a and 14b related to heat medium, and the rest A part flows through either the heat exchanger related to heat medium 14a or the heat exchanger related to heat medium 14b.

[0116] Figure 8 It is a system circuit diagram showing the refrigerant side circuit of the air-conditioning apparatus according to Embodiment 3 of the present invention. O...

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Abstract

The device has a heat medium circulation circuit that has multiple use-side heat exchangers (30), inter-heat medium heat exchangers (14a, 14b), heat medium flow path switching devices (32, 33) for switching flow paths, and pumps (31a, 31b) for producing a flow of the heat medium in said flow paths. The inter-heat medium heat exchangers (14a, 14b) exchange heat between a heat source fluid from a heat source device (1) and the heat medium in order to heat or cool the heat medium. Roughly half of the multiple use-side heat exchangers (30) are use-side heat exchangers (30) that preheat or pre-cool, and the remaining use-side heat exchangers (30) that do not preheat or pre-cool reduce the energy consumed by preheating or pre-cooling by exchanging the heat medium with those use-side heat exchangers (30) of the preheat or pre-cool use-side heat exchangers (30) that have not yet started operating.

Description

technical field [0001] The present invention relates to air conditioning devices such as multi-connected air conditioners for high-rise buildings. Background technique [0002] As a prior art, in an air conditioner that performs heat exchange using a heat medium (cold liquid or hot liquid) from a heat source device (heat source device), there is a need to control the heat circulating between the heat source unit and the indoor unit (air conditioner). Medium pre-cooling, pre-heating technology. For example, a technique has been proposed in which the temperature of the liquid in the piping connecting the heat source machine and the air conditioner is measured at night, the heat source device is activated at the time of calculation based on various data including the liquid temperature data, and then forced The valve of the indoor unit scheduled to operate on that day is fully opened, and the indoor unit is precooled and preheated before actually starting to use the indoor uni...

Claims

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Application Information

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IPC IPC(8): F24F11/02F25B1/00
CPCF24F11/008F25B2313/0231F25B13/00F25B25/005F25B2500/26F25B2700/2106F25B2313/0272F25B2313/0234F25B2313/006F25B2309/061F25B1/00F25B2341/0662F25B2313/02741F24F11/83F25B41/39F24F11/84
Inventor 高山启辅岛津裕辅
Owner MITSUBISHI ELECTRIC CORP
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