Outdoor unit and refrigeration cycle device

Patent metadata

Field	Value
Publication number	US-9587886-B2
Application number	US-201314428024-A
Country	US
Kind code	B2
Filing date	Sep 27, 2013
Priority date	Oct 5, 2012
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

An outdoor unit includes an outdoor air heat exchanger formed of an air heat exchanger that includes multiple aligned fins and a heat transfer tube intersecting the fins at multiple positions and transferring heat of a refrigerant flowing in the tube and that exchanges heat between the refrigerant and air; and a blower fan forming a flow of the air flowing through the outdoor air heat exchanger. In the outdoor air heat exchanger, the heat transfer tube intersects the fins at intervals based on a flow rate of the air flowing into the outdoor air heat exchanger according to a positional relationship with the blower fan.

First claim

The invention claimed is:

1. An outdoor unit comprising:
an outdoor air heat exchanger formed of an air heat exchanger that includes a plurality of aligned fins and a heat transfer tube allowing a refrigerant to flow therein and including a plurality of heat transfer tube segments, the heat transfer tube segments each being formed on the heat transfer tube as being bent and intersecting the fins at a plurality of positions and allowing a refrigerant to flow therein, the heat exchanging heat between the refrigerant and air; and
a blower device forming a flow of the air flowing through the outdoor air heat exchanger,
wherein, in the outdoor air heat exchanger, intervals between adjacent ones of the heat transfer tube segments being formed on the heat transfer tube as being bent are set to increase toward a region in which a volume of air flowing into the outdoor heat exchanger is large from a region in which the volume of air flowing into the outdoor heat exchanger is small.

2. The outdoor unit of claim 1 , wherein the outdoor air heat exchanger includes a plurality of air heat exchangers that are each identical to the air heat exchanger, that are aligned in a direction perpendicular to a direction in which the air flows into the outdoor air heat exchanger, and in which the intervals between adjacent ones of the heat transfer tube segments being formed on the heat transfer tube as being bent vary between the plurality of air heat exchangers.

3. The outdoor unit of claim 1 ,
wherein a plurality of blower devices that are each identical to the blower device are aligned in a vertical direction in an upper part of a casing, and
wherein, in the outdoor air heat exchanger, the intervals at which the heat transfer tube segments intersect the fins increase from top to bottom in the vertical direction.

4. The outdoor unit of claim 1 ,
wherein, in the outdoor air heat exchanger, a plurality of air heat exchangers that are each identical to the air heat exchanger and in each of which the fins are arranged at an interval based on a flow rate of air flowing into the air heat exchanger according to a positional relationship with the blower device are aligned in a direction perpendicular to a direction in which the air flows into the outdoor air heat exchanger.

5. The outdoor unit of claim 4 ,
wherein a plurality of blower devices that are each identical to the blower device are aligned in a vertical direction in an upper part of a casing, and
wherein, in the outdoor air heat exchanger, the intervals of the fins increases from top to bottom in the vertical direction.

6. The outdoor unit of claim 1 , wherein the heat transfer tube is formed of a flat heat exchanger tube.

7. The outdoor unit of claim 3 , wherein the plurality of blower devices are driven so as to operate at an identical rotation speed.

8. A refrigeration cycle device comprising:
the outdoor unit of claim 1 ; and
an indoor unit including at least a load heat exchanger,
wherein the outdoor unit and the indoor unit are connected with a pipe to form a refrigerant circuit.

9. An outdoor unit comprising:
an outdoor air heat exchanger formed of a plurality of air heat exchangers that include a plurality of aligned fins and a heat transfer tube including a plurality of heat transfer tube segments, the heat transfer tube segments each intersecting the fins at a plurality of positions and allowing a refrigerant to flow therein, the heat exchanger exchanging heat between the refrigerant and air; and
a plurality of blower devices forming a flow of the air flowing through the outdoor air heat exchanger, the plurality of blower devices are aligned in a vertical direction in an upper part of a casing, wherein
intervals between the heat transfer tube segments in the outdoor air heat exchanger are set to increase toward a region in which a volume of air flowing into the outdoor heat exchanger is large from a region in which the volume of air flowing into the outdoor heat exchanger is small,
the fins of the plurality of air heat exchangers in the outdoor air heat exchanger are arranged at intervals based on a flow rate of air flowing into the air heat exchanger according to a positional relationship with the blower device are aligned in a direction perpendicular to a direction in which the air flows into the outdoor air heat exchanger, and
the intervals of the fins in the outdoor air heat exchanger increases from top to bottom in the vertical direction.

10. The outdoor unit of claim 1 , wherein each of the heat transfer tube segments are bent heat transfer tube segments that include a bent tube connector that connects two parallel tubes.

11. The outdoor unit of claim 10 , wherein the intervals span between each of the bent heat transfer tube segments.

12. The outdoor unit of claim 1 , wherein
the outdoor air heat exchanger is an air condition system outdoor air heat exchanger, and
the blower is an air condition system blower.

Assignees

• Mitsubishi Electric Corp

Inventors

• Higashiiue Shinya

Classifications

• F24F1/18

  characterised by their shape · CPC title

• F28D1/04 Primary

  with tubular conduits {(F28D1/0246 takes precedence)} · CPC title

• F28D1/0206

  Heat exchangers immersed in a large body of liquid (apparatus using liquid heat storage material F28D20/0034) · CPC title

• F28F1/32

  the means having portions engaging further tubular elements · CPC title

• F28D1/0478

  the conduits having a non-circular cross-section · CPC title