Drying system and use of the drying system in laundry drying device

Patent metadata

Field	Value
Publication number	US-9488412-B2
Application number	US-201514712122-A
Country	US
Kind code	B2
Filing date	May 14, 2015
Priority date	May 30, 2014
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

A drying system and a laundry drying device are provided. The drying system includes a compressor, a draught fan, a casing, a throttling device, an evaporator and a condenser. The condenser and the evaporator are relatively fixedly arranged inside the casing, and the evaporator is obliquely arranged inside the casing; an inner space of the casing at least includes a first space at one side of the evaporator, a second space between the evaporator and the condenser, and a third space at another side of the condenser; a bottom portion of the casing is provided with a water reserving portion or a drainage hole, and the casing has a high point A at a portion where the condenser is arranged and a high point B at a portion where the evaporator is arranged, and the high point A is substantially same as the high point B.

First claim

The invention claimed is:

1. A drying system, comprising a compressor, a draught fan, a casing, a throttling device, an evaporator and a condenser; wherein the condenser and the evaporator are relatively fixedly arranged inside the casing, and the evaporator is obliquely arranged inside the casing; under the arrangement of the condenser and the evaporator, an inner space of the casing at least comprises a first space at one side of the evaporator, a second space between the evaporator and the condenser, and a third space at another side of the condenser; a bottom portion of the casing is provided with a water reserving portion or a drainage hole configured to discharge condensate water, the water reserving portion or the drainage hole is arranged below or laterally below the evaporator, and the casing has a high point A at a portion where the condenser is arranged and a high point B at a portion where the evaporator is arranged, and the high point A is substantially same as the high point B.

2. The drying system according to claim 1 , wherein the evaporator is a micro-channel heat exchanger and comprises at least two headers, a plurality of flat tubes, and a plurality of fins, two ends of each flat tube are in communication with the headers respectively, and the fins are each arranged between adjacent flat tubes; at least one of the headers is located at a lower position and arranged horizontally, and a main body portion of the flat tube is obliquely arranged.

3. The drying system according to claim 2 , wherein an evaporator accommodating portion of the casing is provided with a first supporting portion and a first limiting portion, and the header at the lower position is horizontally supported on the first supporting portion; the first supporting portion is provided with at least one circulating portion configured to allow the condensate water to flow to the water reserving portion or the drainage hole through the circulating portion, and an angle α formed between the evaporator and a horizontal plane satisfies the relationship: 10°≦α≦30°.

4. The drying system according to claim 3 , wherein the condenser is a multi-layer micro-channel heat exchanger having at least two layers, and is arranged inside the casing approximately uprightly, and the condenser comprises at least two headers, a plurality of flat tubes, and a plurality of fins, two ends of each flat tube are in communication with the headers respectively, and the fins are each arranged between adjacent flat tubes; at least one header of the condenser is approximately uprightly arranged and a main body portion of the flat tube is approximately horizontally arranged, or at least one header of the condenser is approximately horizontally arranged and a main body portion of the flat tube is approximately uprightly arranged.

5. The drying system according to claim 4 , wherein in the second space of the casing, an air guiding portion is provided close to the condenser viewed from the top, the air guiding portion is of a streamline design with a structure gradually narrowed in the direction from the evaporator to the condenser, and covers a finless area at two ends of the condenser; and the air guiding portion comprises a vent at one end close to the condenser, and a width of the vent is adapted to a size of a finned area of the condenser.

6. The drying system according to claim 4 , wherein the two headers of the condenser are approximately uprightly arranged, the main body portion of the flat tube is approximately horizontally arranged, and two ends of the condenser are a finless area; a transverse limiting portion configured to limit the position of the condenser transversely is provided in the casing, and the transverse limiting portion is configured to cover the finless area at two ends of the condenser in the width direction to reduce the quantity of air passing through the finless area; a stopper is provided in the second space of the casing at a position close to the condenser, the stopper is fixedly connected to the bottom portion of the casing, and two ends of the stopper are connected to the air guiding portion to form a waterproof structure; a portion, at one side of the stopper close to the evaporator, of the second space is higher than a portion of the casing where the water reserving portion or the drainage hole is arranged, and a backflow passage is provided between the stopper and the water reserving portion or the drainage hole.

7. The drying system according to claim 6 , wherein the casing comprises a base and a casing cover; the base comprises a condenser accommodating portion configured to receive the condenser, and the condenser accommodating portion comprises a supporting portion configured to support a side plate of the condenser, the stopper is arranged on the base, and a height of the stopper is higher than a height of the supporting portion; the casing cover comprises a third flow guide portion, the third flow guide portion is arranged between the condenser and the evaporator, and in the height direction, the third flow guide portion is of a streamline structure gradually enlarged from the evaporator to the condenser.

8. The drying system according to claim 7 , wherein the casing is of an approximately L shape, and the condenser and the evaporator are arranged in a transverse main body portion of the casing; the evaporator being obliquely arranged refers to that a lower end of the evaporator is arranged away from the condenser, and another higher end of the evaporator is arranged close to the condenser, the first space is located at one side of the evaporator away from the condenser, and the first space is in communication with an air inlet ducts of the casing, or is in communication with the air inlet ducts of the casing via the draught fan; and the water reserving portion or the drainage hole is arranged at a bottom portion of the second space between the condenser and the evaporator.

9. The drying system according to claim 8 , wherein a blocking portion is provided on the casing at a position close to the evaporator and extends away from the evaporator; the blocking portion is arranged at a lower position close to the evaporator and is of an approximately plate structure, and a lower portion of the blocking portion and two end portions of the lower portion of the blocking portion are fixedly connected to the casing to form a waterproof structure.

10. The drying system according to claim 8 , wherein, viewed in the height direction, an indentation portion is provided at a top wall of the casing between the condenser accommodating portion and the evaporator accommodating portion, the position of the indentation portion is lower than the condenser accommodating portion and the evaporator accommodating portion; the casing further comprises a first flow guide portion and a second flow guide portion which are both above the first space, the first flow guide portion is relatively away from the condenser accommodating portion, the second flow guide portion is relatively close to the indentation portion, and a sunken transition portion is provided between the first flow guide portion and the second flow guide portion; a third flow guide portion is arranged in the direction from the indentation portion to the condenser accommodating portion; the second flow guide portion and the sunken transition portion are arranged above the evaporator, the sunken transition portion is of a smooth transition structure configured to allow a smooth transit between the first flow guide portion and the second flow guide portion; and the third flow guide portion is of a streamline structure in the height direction gradually enlarged in the direction from the indentation portion to the condenser accomm

Assignees

• Hangzhou Sanhua Res Inst Co Ltd

Inventors

• Yu Zhijie
• Zhang Weiyi
• Huang Xinfeng

Classifications

• D06F58/206 Primary

  Heat pump arrangements · CPC title

• F26B25/005 Primary

  Treatment of dryer exhaust gases (incineration of volatiles F26B23/022) · CPC title

• D06F58/24

  Condensing arrangements · CPC title