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Air-conditioning device

A technology of air-conditioning device and throttling device, which is applied in the direction of reversible cycle compressor, lighting and heating equipment, machine operation mode, etc. It can solve the problem of not being able to cope with the mixed operation of cooling and heating, and achieve the effect of preventing deterioration

Active Publication Date: 2013-08-21
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the air conditioner described in Patent Document 3 cannot cope with the cooling and heating mixed operation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0034] figure 1 It is a schematic diagram showing an installation example of the air conditioner according to Embodiment 1 of the present invention. based on figure 1 An example of installation of an air conditioner will be described. In this air conditioner, each indoor unit can freely select a cooling mode or heating mode. In addition, contains figure 1 In addition, in the following drawings, the size relationship of each component may differ from actual ones.

[0035] exist figure 1 Among them, the air conditioner according to Embodiment 1 includes one outdoor unit 1 as a heat source unit, a plurality of indoor units 2 , and a heat medium relay unit 3 interposed between the outdoor unit 1 and the indoor units 2 . The heat medium converter 3 performs heat exchange between the heat source side refrigerant and the heat medium. The outdoor unit 1 and the heat medium relay unit 3 are connected by a refrigerant pipe 4 through which a heat source side refrigerant is conduct...

Embodiment approach 2

[0199] Figure 14 It is a figure which shows the structure of 100 A of air-conditioning apparatuses of Embodiment 2. In the air conditioner 100A according to Embodiment 2, the outdoor unit 1 includes an expansion device 14a, an expansion device 14b, and an expansion device 14c. That is, in Embodiment 1, the case of having the backflow prevention device 20 was described as an example, but in Embodiment 2, the throttle device 14a is moved to the position of the backflow prevention device 20 in Embodiment 1, and The throttle device 14c is provided at the position of the throttle device 14a in the first embodiment. The throttling device 14a and the throttling device 14b use a device that continuously changes the opening degree (opening area) such as an electronic expansion valve, and the throttling device 14c uses a capillary tube or a solenoid valve with a small opening area when opened. A device with a fixed opening area of ​​the throttle, such as an on-off valve. The basic o...

Embodiment approach 3

[0207] In Embodiment 1 and Embodiment 2, the following system was described as an example, that is, the compressor 10, the first refrigerant flow switching device 11, the heat source side heat exchanger 12, the throttle device 14a, the throttle The device 14 b , the opening and closing device 17 , and the backflow prevention device 20 (the throttle device 14 c in Embodiment 2) are housed in the outdoor unit 1 . In addition, the use-side heat exchanger 26 is accommodated in the indoor unit 2 , and the heat exchanger related to heat medium 15 and the expansion device 16 are accommodated in the heat medium relay unit 3 . Furthermore, the outdoor unit 1 and the heat medium relay unit 3 are connected by a set of two pipes, and the heat source side refrigerant is circulated between the outdoor unit 1 and the heat medium relay unit 3 and passed through the two sets of pipes respectively. Connect between the indoor unit 2 and the heat medium converter 3, circulate the heat medium betw...

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Abstract

In a heating mode, a heat-pump water-heating device (100) adjusts the amount of a refrigerant flowing into injection piping (4c) by controlling a second restriction device (14a), and in a cooling mode, the amount of refrigerant flowing into the injection piping (4c) is adjusted by controlling a third restriction device (14b).

Description

technical field [0001] The present invention relates to an air conditioner suitable for use in, for example, a multi-unit air conditioner for a building. Background technique [0002] Among air conditioners such as multi-unit air conditioners for buildings, there is an air conditioner that circulates refrigerant from the outdoor unit to the repeater, and circulates heat medium such as water from the repeater to the indoor unit, so that heat such as water The medium circulates to the indoor unit, and at the same time, the transmission power of the heat medium is reduced to realize a cooling and heating mixed operation (for example, refer to Patent Document 1). [0003] There is also an air conditioner that has a circuit for injecting liquid from the high-pressure liquid pipe of the refrigeration cycle to the compressor in order to reduce the discharge temperature of the compressor, so that the discharge temperature can be controlled to a set temperature regardless of the oper...

Claims

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Application Information

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IPC IPC(8): F25B1/00
CPCF25B1/10F25B13/00F25B25/005F25B2313/023F25B2313/0272F25B2313/02732F25B2313/02741F25B2400/121F25B2700/21152F25B2313/0231F25B29/003
Inventor 山下浩司森本裕之石村亮宗若本慎一竹中直史
Owner MITSUBISHI ELECTRIC CORP
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