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Indoor unit of heat pump utilization equipment and heat pump utilization equipment provided with same

A technology for indoor units and equipment, applied in lighting and heating equipment, heat pumps, household appliances, etc., can solve the problem of generating flammable concentration areas

Active Publication Date: 2019-06-04
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that a flammable concentration area may be generated indoors

Method used

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  • Indoor unit of heat pump utilization equipment and heat pump utilization equipment provided with same
  • Indoor unit of heat pump utilization equipment and heat pump utilization equipment provided with same
  • Indoor unit of heat pump utilization equipment and heat pump utilization equipment provided with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0016] The indoor unit of the heat pump utilization facility according to Embodiment 1 of the present invention and the heat pump utilization facility including the indoor unit will be described. figure 1 It is a circuit diagram showing the schematic configuration of the heat pump utilization facility of this embodiment. In this embodiment, a heat pump water heater 1000 is illustrated as a heat pump utilization device. In addition, in this embodiment, the heat pump water heater 1000 which combined the outdoor unit 100A which uses a flammable refrigerant as a refrigerant, and the indoor unit 200 is shown as an example. Additionally, when including figure 1 In the drawings included below, the dimensional relationship, shape, etc. of each component may be different from the actual ones.

[0017] Such as figure 1 As shown, the heat pump water heater 1000 has a refrigerant circuit 110 that circulates a refrigerant, and a water circuit 210 that circulates water. In addition, hea...

Embodiment approach 2

[0082] The indoor unit of the heat pump utilization facility according to Embodiment 2 of the present invention and the heat pump utilization facility including the indoor unit will be described. image 3 It is a circuit diagram showing the schematic configuration of the heat pump utilization facility of this embodiment. In this embodiment, a heat pump water heater 1000 is illustrated as a heat pump utilization device. Components having the same functions and actions as those in Embodiment 1 are denoted by the same reference numerals and their descriptions are omitted.

[0083] Such as image 3 As shown, in the indoor unit 200 of this embodiment, the branch portion 72 a for branching the pipe 72 and the pipe 73 is provided between the pressure relief valve 70 and the on-off valve 74 . The on-off valve 74 is provided between the branch part 72a and the branch part 72b. That is, the on-off valve 74 is sandwiched between the water circuit 210 and the pressure release valve 70 ...

Embodiment approach 3

[0091] The indoor unit of the heat pump utilization facility according to Embodiment 3 of the present invention and the heat pump utilization facility including the indoor unit will be described. Figure 4 It is a circuit diagram showing the schematic configuration of the heat pump utilization facility of this embodiment. In this embodiment, a heat pump water heater 1000 is illustrated as a heat pump utilization device. Components having the same functions and actions as those in Embodiment 1 are denoted by the same reference numerals and their descriptions are omitted.

[0092] Such as Figure 4 As shown, in the indoor unit 200 of the present embodiment, the expansion tank 52 is connected to the auxiliary heater 54 through the piping 72 as in the first embodiment, while the pressure release valve 70 and the air exhaust valve 71 are connected to the auxiliary heater 54 through the piping 72 is connected to the main circuit 220 by another pipe 76 . The expansion tank 52 of t...

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PUM

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Abstract

The invention provides an indoor unit of heat pump utilization equipment and heat pump utilization equipment provided with the same. The indoor unit of heat pump utilization equipment constitutes a portion of the heat pump utilization equipment that comprises: a refrigerant circuit which circulates a refrigerant; a heating medium circuit which allows a heating medium to flow therethrough; and a heat exchanger which performs heat exchange between the refrigerant and the heating medium. The indoor unit of heat pump utilization equipment houses a portion of the heating medium circuit and is connected to an outdoor unit which houses the refrigerant circuit and the heat exchanger. The indoor unit of heat pump utilization equipment has a pressure protection device that is connected to the heating medium circuit, and an opening and closing device that is interposed between the heating medium circuit and the pressure protection device.

Description

technical field [0001] The present invention relates to an indoor unit of a heat pump utilization facility constituting a part of a heat pump utilization facility having a refrigerant circuit and a heat medium circuit, and a heat pump utilization facility including the indoor unit. Background technique [0002] Patent Document 1 describes an outdoor unit of a heat pump cycle device using a flammable refrigerant. This outdoor unit is equipped with: a refrigerant circuit in which a compressor, an air heat exchanger, an expansion device, and a water heat exchanger are piped; Excessive rise in water pressure in the water circuit of the water. Thereby, even if the partition wall separating the refrigerant circuit and the water circuit in the water heat exchanger is broken and the flammable refrigerant is mixed into the water circuit, the flammable refrigerant can be discharged outside through the pressure release valve. . [0003] Patent Document 1: Japanese Patent Laid-Open N...

Claims

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Application Information

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IPC IPC(8): F25B49/02F24F1/0007F25B1/00F25B30/02
CPCF24D11/0228F24D17/02F24D19/1072F24D2200/123F25B2339/047F25B2400/054F25B2400/16F25B30/02F25B47/025F25B2400/053F25B2400/121Y02B10/70
Inventor 铃木康巨服部太郎南迫博和铃木一隆
Owner MITSUBISHI ELECTRIC CORP
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