Heat pump

Patent metadata

Field	Value
Publication number	US-2022018580-A1
Application number	US-202117356951-A
Country	US
Kind code	A1
Filing date	Jun 24, 2021
Priority date	Jul 20, 2020
Publication date	Jan 20, 2022
Grant date	—

Abstract

A heat pump is provided that may include an indoor unit including an indoor heat exchanger; an outdoor unit including an outdoor heat exchanger and a compressor that compresses a refrigerant; a housing that forms an outer shape of the outdoor unit and provides an internal space in which the outdoor heat exchanger and the compressor are disposed; a partition wall that is disposed in the internal space of the housing, and divides the internal space into a flow path space in which the outdoor heat exchanger is disposed and a cycle space in which the compressor is disposed; an outdoor fan disposed in the flow path space to cause an air flow; and a controller that controls an operation of the compressor and the outdoor fan. The housing may include a hole that communicates with the cycle space, and the partition wall may include a barrier hole that communicates the flow path space and the cycle space.

First claim

What is claimed is:

1 . A heat pump, comprising:
an indoor unit including an indoor heat exchanger; an outdoor unit including an outdoor heat exchanger and a compressor that compresses a refrigerant; a housing that forms an outer shape of the outdoor unit and provides an internal space in which the outdoor heat exchanger and the compressor are disposed; a partition wall that is disposed in the internal space of the housing and divides the internal space into a flow path space in which the outdoor heat exchanger is disposed and a cycle space in which the compressor is disposed; an outdoor fan disposed in the flow path space to cause an air flow; and a controller that controls an operation of the compressor and the outdoor fan, wherein the housing includes a hole that communicates with the cycle space, and the partition wall includes a barrier hole that communicates with the flow path space and the cycle space.

2 . The heat pump of claim 1 , wherein the housing further comprises:
an inflow hole through which outdoor air flows to the outdoor fan; and a discharge hole through which the air that has passed through the outdoor fan is discharged, wherein the inflow hole and the discharge hole are formed in a portion of the housing that defines a boundary of the flow path space.

3 . The heat pump of claim 2 , wherein the controller operates the outdoor fan for a predetermined period of time, prior to driving the compressor, when a heat pump operation signal is input.

4 . The heat pump of claim 2 , wherein the partition wall extends lengthwise in a vertical direction, wherein the flow path space and the cycle space are disposed at lateral sides of the partition wall with the partition wall interposed therebetween, and wherein the barrier hole is provided adjacent to a lower end of the partition wall.

5 . The heat pump of claim 4 , wherein the hole is formed in a portion of the housing that defines a boundary of the cycle space and positioned above the barrier hole.

6 . The heat pump of claim 4 , further comprising:
a damper that is coupled to one side of the partition so as to be movable in a vertical direction; and a guide rail that guides movement of the damper, wherein the damper is positioned above the barrier hole to open the barrier hole, or covers one side of the barrier hole to close the barrier hole.

7 . The heat pump of claim 6 , wherein the controller opens the barrier hole by the damper and operates the outdoor fan for the predetermined period of time, prior to driving the compressor, when a heat pump operation signal is input.

8 . The heat pump of claim 7 , wherein the controller closes the barrier hole by the damper, after the outdoor fan is operated for the predetermined period of time.

9 . The heat pump of claim 8 , further comprising a sensor that detects that the refrigerant has leaked to the cycle space, wherein the controller opens the barrier hole by the damper while operating the outdoor fan and stops driving of the compressor, when it is determined that an amount of the refrigerant which has leaked to the cycle space is greater than or equal to a reference amount, based on information obtained from the sensor.

10 . The heat pump of claim 7 , wherein the predetermined period of time is increased as a total amount of refrigerant circulating in the outdoor unit is increased.

11 . The heat pump of claim 1 , further comprising an inverter board installed in the cycle space to control a frequency of the compressor, wherein the controller operates the outdoor fan for a predetermined period of time, prior to driving the inverter board, when a heat pump operation signal is input.

12 . An outdoor unit for a heat pump, the outdoor unit comprising:
an outdoor heat exchanger and a compressor that compresses a refrigerant; a housing that forms an outer shape of the outdoor unit and provides an internal space in which the outdoor heat exchanger and the compressor are disposed; a partition wall that is disposed in the internal space of the housing, and divides the internal space into a flow path space in which the outdoor heat exchanger is disposed and a cycle space in which the compressor is disposed; an outdoor fan that is disposed in the flow path space to cause an air flow; and a controller that controls an operation of the compressor and the outdoor fan, wherein the housing includes a hole that communicates with the cycle space, and the partition wall includes a barrier hole that communicates with the flow path space and the cycle space.

13 . The outdoor unit of claim 12 , wherein the housing further comprises:
an inflow hole through which outdoor air flows to the outdoor fan; and a discharge hole through which the air that has passed through the outdoor fan is discharged, wherein the inflow hole and the discharge hole are formed in a portion of the housing that defines a boundary of the flow path space.

14 . The outdoor unit of claim 13 , wherein the controller operates the outdoor fan for a predetermined period of time, prior to driving the compressor, when an operation signal is input.

15 . The outdoor unit of claim 13 , wherein the partition wall extends lengthwise in a vertical direction, wherein the flow path space and the cycle space are disposed at lateral sides of the partition wall with the partition wall interposed therebetween, and wherein the barrier hole is provided adjacent to a lower end of the partition wall.

16 . The outdoor unit of claim 15 , wherein the hole is formed in a portion of the housing that defines a boundary of the cycle space and positioned above the barrier hole.

17 . The outdoor unit of claim 14 , further comprising:
a damper that is coupled to one side of the partition so as to be movable in a vertical direction; and a guide rail that guides movement of the damper, wherein the damper is positioned above the barrier hole to open the barrier hole, or covers one side of the barrier hole to close the barrier hole.

18 . The outdoor unit of claim 17 , wherein the controller opens the barrier hole by the damper and operates the outdoor fan for the predetermined period of time, prior to driving the compressor, when an operation signal is input, and wherein the controller closes the barrier hole by the damper, after the outdoor fan is operated for the predetermined period of time.

19 . The outdoor unit of claim 12 , further comprising an inverter board installed in the cycle space to control a frequency of the compressor, wherein the controller operates the outdoor fan for a predetermined period of time, prior to driving the inverter board, when an operation signal is input.

20 . A heat pump, comprising:
an indoor unit including an indoor heat exchanger; an outdoor unit, including:
an outdoor heat exchanger;
a compressor that compresses a refrigerant;
a housing that forms an outer shape of the outdoor unit;
a partition wall that is disposed in the housing and divides the housing into a flow path space in which the outdoor heat exchanger is disposed and a cycle space in which the compressor is disposed;
an outdoor fan disposed in the flow path space to cause an air flow;
a controller that controls an operation of the heat pump, wherein the housing includes a hole that communicates with the cycle space, and the partition wall includes a barrier hole that communicates with the flow path space and the cycle space; and
an inverter board installed in the cycle space to control a frequency of the compressor, wherein the contr

Assignees

• Lg Electronics Inc

Inventors

• Kim Minsoo
• Cho Eunjun
• Yoon Pilhyun
• Ryu Jihyeong
• Lee Youngmin
• Seo Hojin

Classifications

• F25B2500/222

  Detecting refrigerant leaks · CPC title

• F24F11/48

  prior to normal operation, e.g. pre-heating or pre-cooling · CPC title

• F24F11/36 Primary

  to leakage of heat-exchange fluid · CPC title

• F24F1/56

  Casing or covers of separate outdoor units, e.g. fan guards · CPC title

• F24F1/46

  Component arrangements in separate outdoor units · CPC title