Air conditioning apparatus

An air-conditioning device and space technology, applied in air-conditioning systems, space heating and ventilation, heating methods, etc., can solve problems such as time-consuming, inability to guide, and slow start

Active Publication Date: 2016-02-10
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, part of the leaked refrigerant from the heat exchanger leaks out of the casing from the outlet, and therefore the entire amount of the leaked refrigerant cannot be transferred to the drain pan and guided into the machine room.
Therefore, there is a problem in that it takes time until the leaked refrigerant is detected by the refrigerant detection means, and thus the countermeasures, such as the start-up of the blower for diffusing the leaked refrigerant, may also be slowed down.
As a result, part of the leaked refrigerant leaks out of the casing from the outlet, and therefore the entire amount of the leaked refrigerant cannot be guided to the place where the refrigerant detection unit is arranged.
Therefore, there is a problem that it takes time to detect the location of the refrigerant leakage by the refrigerant detection means, so that the countermeasures, such as the start-up of the blower for diffusing the refrigerant leakage, may also be slowed down.

Method used

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Examples

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Embodiment approach 1

[0050] The air conditioner of Embodiment 1 of this invention is demonstrated. figure 1 It is a refrigerant circuit diagram showing a schematic configuration of the air conditioner of the present embodiment. Additionally, include figure 1 In the following drawings, the dimensional relationship, shape, etc. of each component may be different from the actual ones.

[0051] Such as figure 1 As shown, the air conditioner has a refrigeration cycle 40 that circulates a refrigerant. The refrigeration cycle 40 has a structure in which a compressor 3 , a refrigerant flow switching device 4 , an outdoor heat exchanger 5 (heat source side heat exchanger), a pressure reducing device 6 , and an indoor heat exchanger are sequentially connected via refrigerant piping. 7 (load side heat exchanger) is connected in a ring. In addition, the air conditioner has, for example, an indoor unit 1 installed indoors, and an outdoor unit 2 installed outdoors, for example. The indoor unit 1 and the ou...

Embodiment approach 2

[0097] An air conditioner according to Embodiment 2 of the present invention will be described. Figure 11 It is a front view schematically showing the internal structure of the indoor unit 1 of the air conditioner of this embodiment. Figure 12 It is a side view schematically showing the internal structure of the indoor unit 1 . Components having the same functions and actions as those in Embodiment 1 are assigned the same reference numerals and their descriptions are omitted.

[0098] Such as Figure 11 as well as Figure 12 As shown, the refrigerant detection unit 99 of this embodiment is provided in the space between the suction opening 108b and the suction port 112 in the lower space 115a (that is, outside the fan casing 108 in the lower space 115a). That is, in the present embodiment, the refrigerant detection unit 99 is provided on the downstream side of the indoor blower fan 7f in the outflow path of the leaked refrigerant, as in the second modified example of the f...

Embodiment approach 3

[0105] An air conditioner according to Embodiment 3 of the present invention will be described. Figure 13 It is a front view schematically showing the internal structure of the indoor unit 1 of the air conditioner of this embodiment. Figure 14 It is a side view schematically showing the internal structure of the indoor unit 1 . In addition, components having the same functions and actions as those in Embodiment 1 are denoted by the same reference numerals and their descriptions are omitted.

[0106] Such as Figure 13 as well as Figure 14 As shown, the difference between the indoor unit 1 of this embodiment and the indoor unit 1 of Embodiment 1 is that the partition 20 has a flat plate shape, and image 3 as well as Figure 4 The concave portion 130 shown in FIG. 2 is not formed in the partition portion 20 . However, in this embodiment, like Embodiment 1, joint parts 15a, 15b are arrange|positioned in the upper space 115b. In addition, in Figure 13 as well as Figu...

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PUM

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Abstract

The invention provides an air conditioning apparatus which can detect leakage of a refrigerant earlier. An inside apparatus (1) comprising a housing (111), an upper cavity (115b) in which an indoor heat exchanger (7) is disposed in the housing (111), a lower cavity (115a) provided below the upper cavity (115b) in the housing (111), an indoor fan (7f) disposed in the lower cavity (115a), a fan casing (108) disposed in the lower cavity (115a) to cover the indoor fan (7f), the fan casing (108) having a blow-out opening (108a) and a suck-in opening (108b) formed thereon, and a coolant detection means (99), wherein the blow-out opening (108a) is in communication with the upper cavity (115b), and wherein the coolant detection means (99) is provided in the lower cavity (115a).

Description

technical field [0001] The present invention relates to air conditioners. Background technique [0002] Conventionally, an HFC refrigerant such as nonflammable R410A has been used as a refrigerant used in an air conditioner. Unlike conventional HCFC refrigerants such as R22, this R410A has an ozone depletion potential (hereinafter referred to as "ODP") of zero and therefore does not deplete the ozone layer. However, R410A has a high global warming potential (hereinafter referred to as "GWP"). Therefore, as part of the prevention of global warming, studies on switching from high-GWP HFC refrigerants such as R410A to low-GWP refrigerants have been advanced. [0003] As a candidate for such a low-GWP refrigerant, there is R290 (C 3 h 8 : propane), R1270 (C 3 h 6 : HC refrigerant like propylene). However, R290 and R1270 have flammability (strong flammability) of a strong flammability level, unlike non-flammable R410A. Therefore, in the case of using R290 or R1270 as the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/02
CPCF24F1/0003F25B13/00F24F11/36F24F11/83F24F11/84
Inventor 铃木康巨驹井隆雄前田晃川岛充
Owner MITSUBISHI ELECTRIC CORP
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