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

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Problems solved by technology

In addition, the air conditioner described in Patent Documen

Method used

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Examples

Experimental program
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Effect test

Example Embodiment

[0033] Embodiment 1

[0034] figure 1 It is a schematic diagram showing an installation example of the air-conditioning apparatus according to Embodiment 1 of the present invention. based on figure 1 An example of the installation of an air conditioner will be described. In this air conditioner, by using a refrigeration cycle (refrigerant circuit A, heat medium circuit B) that circulates refrigerant (heat source side refrigerant, heat medium), each indoor unit can be freely selected as the operation mode of the cooling mode or Heating mode. In addition, contains figure 1 In addition, in the following drawings, the size relationship of each component may be different from the actual size.

[0035] in figure 1 Among them, the air-conditioning apparatus of the first embodiment includes one outdoor unit 1 as a heat source unit, a plurality of indoor units 2, and a heat medium converter 3 interposed between the outdoor unit 1 and the indoor unit 2. The heat medium converter 3 exchang...

Example Embodiment

[0198] Embodiment 2

[0199] Picture 14 It is a figure which shows the structure of 100 A of air-conditioning apparatuses in Embodiment 2. In the air-conditioning apparatus 100A of the second embodiment, the outdoor unit 1 includes an expansion device 14a, an expansion device 14b, and an expansion device 14c. That is, in the first embodiment, the case where the backflow preventer 20 is provided as an example has been described, while in the second embodiment, the throttling device 14a is moved to the position of the backflow preventer 20 in the first embodiment, 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 devices that continuously change the opening (opening area) such as an electronic expansion valve, and the throttling device 14c uses a fixed throttling device such as a capillary tube or a solenoid valve with a small opening area when opened. A device w...

Example Embodiment

[0206] Embodiment 3

[0207] In the first and second embodiments, the following system is used as an example for description, that is, the compressor 10, the first refrigerant flow switching device 11, the heat source side heat exchanger 12, the throttle device 14a, and the throttle The device 14b, the opening and closing device 17, and the backflow prevention device 20 (the throttle device 14c in the second embodiment) are housed in the outdoor unit 1. In addition, the use-side heat exchanger 26 is accommodated in the indoor unit 2, and the inter-heat medium heat exchanger 15 and the expansion device 16 are accommodated in the heat medium relay unit 3. In addition, two sets of piping are used to connect the outdoor unit 1 and the heat medium relay unit 3, and the heat source side refrigerant circulates between the outdoor unit 1 and the heat medium relay unit 3, and passes through two sets of piping. Connect the indoor unit 2 and the heat medium converter 3, make the heat mediu...

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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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