Air conditioning apparatus

An air conditioning and refrigerant technology, applied in space heating and ventilation, heating methods, damage protection, etc., can solve the problems of indoor units not being able to blow out high-temperature air immediately, room temperature deviation from the set temperature, etc., to reduce The effect of setting space and reducing cost

Active Publication Date: 2014-12-10
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for example, during defrosting operation, the room temperature may deviate from the set temperature
In addition, even if the heating operation is started after the defrosting operation, the indoor unit cannot immediately blow out high-temperature air.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0035] figure 1 It is a figure which shows the structure of the air-conditioning apparatus concerning Embodiment 1 of this invention. First, based on figure 1 , the mechanism (devices) etc. constituting the air conditioning system will be described. This air conditioner performs cooling and heating using a refrigeration cycle (heat pump cycle) based on a refrigerant cycle. In particular, the air conditioner according to this embodiment is a device capable of simultaneous cooling and heating operation (cooling and heating mixed operation) in which a cooling indoor unit and a heating indoor unit can be mixed.

[0036] Such as figure 1 As shown, the air conditioner of this embodiment is mainly composed of an outdoor unit (heat source side unit, heat source unit) 51 , a plurality of indoor units (load side units) 53a, 53b and a distribution controller 52 . In this embodiment, in order to control the flow of the refrigerant, a distribution controller 52 is provided between the ...

Embodiment approach 2

[0099] Figure 10 It is a figure which shows the structure of the air-conditioning apparatus concerning Embodiment 2 of this invention. exist Figure 10 , regarding reference signs and figure 1 The same mechanisms and the like perform the same operations as those described in the first embodiment. exist Figure 10 Among them, the outdoor side throttling devices 11 (11a, 11b) are used to adjust the flow rate of refrigerant flowing into and out of the outdoor side heat exchangers 3a, 3b, and are installed instead of the second flow path opening and closing valves 7a, 7b. Here, in this embodiment, with respect to the other end branched in the middle of the defrosting bypass pipe 10, the other end of one side is connected to a pipe connecting the outdoor side throttle device 11a and the outdoor side heat exchanger 3a. In addition, the other end is connected to a pipe connecting the outdoor side expansion device 11b and the outdoor side heat exchanger 3b.

[0100] The flow of ...

Embodiment approach 3

[0116] Figure 16 It is a figure which shows the structure of the air-conditioning apparatus concerning Embodiment 3 of this invention. exist Figure 16 , regarding reference signs and figure 1 , Figure 8 The same mechanisms and the like perform the same operations and the like as those described in Embodiments 1 and 2. exist Figure 16 Among them, the three-way valve 12 (12a, 12b, 12c) performs valve switching based on an instruction from the control means 300, thereby switching the path of the refrigerant. In the present embodiment, the three-way valves 12a, 12b serving as the second flow path switching means perform the flow path between the outdoor side heat exchangers 3a, 3b and the discharge side of the compressor 1 (hereinafter referred to as high-pressure side flow). path) or switching of the flow path between the outdoor heat exchangers 3a, 3b and the accumulator 4 (hereinafter referred to as the low-pressure side flow path). For the three-way valve 12c serving...

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PUM

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Abstract

An air conditioner that can perform defrosting efficiently while heating or the like is continued even if the air conditioner is configured by one outdoor unit is obtained. In an air conditioner in which an outdoor unit 51 having a compressor 1 that pressurizes and discharges a refrigerant, a plurality of outdoor heat exchangers 3 that exchange heat between outside air and the refrigerant, and a four-way valve 2 that switches a channel on the basis of an operation form and a plurality of indoor units 53, each having an indoor heat exchanger 32 that exchanges heat between the air in a space to be air-conditioned and the refrigerant and an indoor throttle device 31 are connected by a pipeline so as to configure a refrigerant circuit, a bypass pipeline 10 that divides the refrigerant discharged from the compressor 1 so as to allow the refrigerant to flow into each of the outdoor heat exchangers 3 connected in parallel by a pipeline, a plurality of outdoor third opening / closing valves 8 that pass or shut off the refrigerant from the bypass pipeline 10 to each of the outdoor heat exchangers 3, and a plurality of outdoor second opening / closing valves 7 that pass or shut off the refrigerant from the indoor unit 53 to each of the outdoor heat exchangers 3 are disposed in the outdoor unit 51.

Description

technical field [0001] The present invention relates to an air-conditioning device of an electric heat pump which performs cooling and heating operation by utilizing a refrigeration cycle (heat pump cycle) and performs air conditioning. In particular, it relates to an air conditioner capable of efficiently defrosting an outdoor unit while the indoor unit continues to perform heating and the like. Background technique [0002] In an air conditioner, one or more outdoor units (units on the heat source side) and one or more indoor units (units on the load side) having compressors and outdoor heat exchangers are connected by piping. (heat source side heat exchanger), and the one or more indoor units have a throttling device as an expansion valve and an indoor heat exchanger (load side heat exchanger). Further, a refrigerant circuit is configured to circulate the refrigerant to perform cooling and heating of the space to be air-conditioned. [0003] For example, when the outdoo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/02F25B47/02
CPCF25B2400/13F25B2313/0211F25B13/00F25B2313/0272F25B2313/0233F25B2313/006F25B2313/02741F25B2313/0251F25B2313/0253F25B47/022F25B2313/02323F25B2313/02322F25B2313/02522F25B2313/025F25B2313/0232
Inventor 森本修齐藤信梁池悟山下浩司
Owner MITSUBISHI ELECTRIC CORP
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