IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0491445
(2002-10-17)
|
우선권정보 |
JP-2001-319842(2001-10-17) |
국제출원번호 |
PCT/JP02/010772
(2002-10-17)
|
§371/§102 date |
20040414
(20040414)
|
국제공개번호 |
WO03/033984
(2003-04-24)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Oblon, Spivak, McClelland, Maier &
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
5 |
초록
▼
An evaporator having front and rear heat exchange assemblies arranged at air inlet and outlet sides, respectively, and adjacent to each other. Each heat exchange assembly includes a pair of upper and lower headers, and multiple refrigerant channels each having upper and lower ends connected to the u
An evaporator having front and rear heat exchange assemblies arranged at air inlet and outlet sides, respectively, and adjacent to each other. Each heat exchange assembly includes a pair of upper and lower headers, and multiple refrigerant channels each having upper and lower ends connected to the upper header and lower headers. The upper and lower headers are internally provided with vertical partitions for internally dividing the headers into portions arranged laterally to reverse the direction of upward or rearward flow of a refrigerant through the refrigerant channels of the rear heat exchange assembly every specified number of refrigerant channels, and thereby provide at least one group of upward refrigerant channels in each of left and right halves of the rear heat exchange assembly. The evaporator can be used in a motor vehicle air conditioner.
대표청구항
▼
The invention claimed is: 1. An evaporator comprising: a front heat exchange assembly and a rear heat exchange assembly arranged at an air inlet side and an air outlet side, respectively, and adjacent to each other, each of the heat exchange assemblies comprising a pair of upper and lower headers e
The invention claimed is: 1. An evaporator comprising: a front heat exchange assembly and a rear heat exchange assembly arranged at an air inlet side and an air outlet side, respectively, and adjacent to each other, each of the heat exchange assemblies comprising a pair of upper and lower headers extending laterally; a multiplicity of refrigerant channels arranged laterally at a spacing and each having an upper end connected to the upper header and a lower end connected to the lower header, a refrigerant inlet being provided at one end of the upper or lower header of the rear heat exchange assembly, a refrigerant outlet being provided at one end of the upper or lower header of the front heat exchange assembly, the upper or lower header of the rear heat exchange assembly communicating at a portion thereof toward the other end with the upper or lower header of the front heat exchange assembly at a portion thereof toward the other end by communication means; and at least one of the upper and lower headers of the rear heat exchange assembly being internally provided with vertical partitions for internally dividing the headers into portions arranged laterally so as to reverse the direction of upward or rearward flow of a refrigerant through the refrigerant channels of the rear heat exchange assembly for every specified number of refrigerant channels; wherein the refrigerant to be caused to flow into the group of upward refrigerant channels of the rear heat exchange assembly which are positioned remotest from the refrigerant inlet is made to dividedly flow into and flow upward through a plurality of refrigerant channels of the front heat exchange assembly which are adjacent to the plurality of refrigerant channels of the rear heat exchange assembly constituting the group, by causing the lower headers of the front and rear heat exchange assemblies to communicate with each other by flow-dividing communication means at the header portions corresponding to the plurality of refrigerant channels. 2. An evaporator according to claim 1, wherein the upper and lower headers and the refrigerant channels of the front and rear heat exchange assemblies are formed by a multiplicity of pairs of plates, each of the plates being provided in each of a front and a rear portion of one surface thereof with a pair of upper and lower header recesses and a channel recess communicating at upper and lower ends thereof with the header recesses, each pair of plates being joined to each other with the recessed surfaces thereof opposed to each other, the pairs of plates being fitted into juxtaposed layers with bottom walls of the corresponding recesses joined to one another, a refrigerant passing hole being formed in the bottom wall of the header recess disposed at each position where the refrigerant is to be passed, the partitions being provided by the respective bottom walls of upper and lower header recesses having no refrigerant passing hole. 3. A vehicle provided with a refrigeration cycle having a compressor, a condenser and an evaporator, the evaporator being an evaporator according to claim 2. 4. An evaporator according to claim 1, wherein the upper and lower headers of the front and rear heat exchange assemblies are provided by front and rear two tank chambers in a pair of upper and lower tanks, and the refrigerant channels of the front and rear heat exchange assemblies are provided by front and rear two rows of many refrigerant tubes connected at upper and lower ends thereof to the respective front and rear tank chambers of the upper and lower tanks, the partitions being formed by respective walls so provided as to divide the rear tank chambers of upper and lower tanks into portions arranged laterally. 5. A vehicle provided with a refrigeration cycle having a compressor, a condenser and an evaporator, the evaporator being an evaporator according to claim 4. 6. A vehicle provided with a refrigeration cycle having a compressor, a condenser and an evaporator, the evaporator being an evaporator according to claim 1. 7. An evaporator comprising: a front heat exchange assembly and a rear heat exchange assembly arranged at an air inlet side and an air outlet side, respectively, and adjacent to each other, each of the heat exchange assemblies comprising a pair of upper and lower headers extending laterally; a multiplicity of refrigerant channels arranged laterally at a spacing and each having an upper end connected to the upper header and a lower end connected to the lower header, a refrigerant inlet being provided at one end of the upper or lower header of the rear heat exchange assembly, a refrigerant outlet being provided at one end of the upper or lower header of the front heat exchange assembly, the upper or lower header of the rear heat exchange assembly communicating at a portion thereof toward the other end with the upper or lower header of the front heat exchange assembly at a portion thereof toward the other end by communication means; and at least one of the upper and lower headers of the rear heat exchange assembly being internally provided with vertical partitions for internally dividing the headers into portions arranged laterally so as to reverse the direction of upward or rearward flow of a refrigerant through the refrigerant channels of the rear heat exchange assembly for every specified number of refrigerant channels; wherein the refrigerant to be caused to flow into the group of downward refrigerant channels of the rear heat exchange assembly which are positioned remotest from the refrigerant inlet is made to dividedly flow into and downward through a plurality of refrigerant channels of the front heat exchange assembly which are adjacent to the plurality of refrigerant channels of the rear heat exchange assembly constituting the group, by causing the upper headers of the front and rear heat exchange assemblies to communicate with each other through flow-dividing communication means at the header portions corresponding to the plurality of refrigerant channels. 8. An evaporator according to claim 7, wherein the upper and lower headers and the refrigerant channels of the front and rear heat exchange assemblies are formed by a multiplicity of pairs of plates, each of the plates being provided in each of a front and a rear portion of one surface thereof with a pair of upper and lower header recesses and a channel recess communicating at upper and lower ends thereof with the header recesses, each pair of plates being joined to each other with the recessed surfaces thereof opposed to each other, the pairs of plates being fitted into juxtaposed layers with bottom walls of the corresponding recesses joined to one another, a refrigerant passing hole being formed in the bottom wall of the header recess disposed at each position where the refrigerant is to be passed, the partitions being provided by the respective bottom walls of upper and lower header recesses having no refrigerant passing hole. 9. A vehicle provided with a refrigeration cycle having a compressor, a condenser and an evaporator, the evaporator being an evaporator according to claim 8. header recesses having no refrigerant passing hole. 10. An evaporator according to claim 7, wherein the upper and lower headers of the front and rear heat exchange assemblies are provided by front and rear two tank chambers in a pair of upper and lower tanks, and the refrigerant channels of the front and rear heat exchange assemblies are provided by front and rear two rows of many refrigerant tubes connected at upper and lower ends thereof to the respective front and rear tank chambers of the upper and lower tanks, the partitions being formed by respective walls so provided as to divide the rear tank chambers of upper and lower tanks into portions arranged laterally. 11. A vehicle provided with a refrigeration cycle having a compressor, a condenser and an evaporator, the evaporator being an evaporator according to claim 10. 12. A vehicle provided with a refrigeration cycle having a compressor, a condenser and an evaporator, the evaporator being an evaporator according to claim 7.
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