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Heat exchanger

一种换热器、器具的技术，应用在间接换热器、换热器类型、照明和加热设备等方向，能够解决换热器负荷超过等问题，达到提高效率、高抗压强度的效果

Inactive Publication Date: 2015-08-05
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Disadvantages of the devices known from the prior art especially in the case of CO 2 (R744) When used as a refrigerant, a high pressure is generated in the refrigerant circuit that makes the currently known heat exchanger bear a load exceeding its load limit

Method used

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Embodiment Construction

[0046] FIG. 1 shows a schematic diagram of a heat exchanger 1 . The heat exchanger 1 is divided into a cooling section 6 and an inner heat exchanger 5 . In the cooling section 6 , a refrigerant in a high pressure phase (high pressure refrigerant) 2 is placed in thermal contact with the coolant 3 , thereby generating heat transfer from the high pressure refrigerant 2 to the coolant 3 . In the internal heat exchanger 5, a high-pressure refrigerant 2 is placed in thermal contact with the same refrigerant (low-pressure refrigerant) 4, but in a low-pressure phase. Therefore, the high-pressure refrigerant 2 is further cooled in the internal heat exchanger 5 .

[0047] The high-pressure refrigerant 2 flows into the cooling section 6 through the fluid inlet 7 . A plurality of flow channels are provided within the cooling section 6 , through which the high-pressure refrigerant 2 flows partially and the coolant 3 flows partially. A plurality of flow channels are likewise provided in th...

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Abstract

The invention relates to a heat exchanger (1, 30), comprising a first flow channel (23) for a refrigerant (2, 20, 39), a second flow channel (25) for a refrigerant (4, 22, 41), and a third flow channel (24) for a coolant (3, 21, 40), wherein the first flow channel (23) has a first region (23a) for initial cooling of the refrigerant (2, 20, 39) and a second region (23b) for further cooling of the refrigerant (2, 20, 39), wherein the refrigerant (2, 20, 39) can flow in a high-pressure phase in the first flow channel (23) and the refrigerant (4, 22, 41) can flow in a low-pressure phase in the second flow channel (25), wherein a first heat exchange occurs between the refrigerant in the first region (23a) of the first flow channel (23) and the coolant in the third flow channel (24) and a second heat exchange occurs between the refrigerant in the second region (23b) of the first flow channel (23) and the refrigerant in the second flow channel (25).

Description

technical field [0001] The invention relates to a heat exchanger having a first flow channel for refrigerant, a second flow channel for refrigerant and a third flow channel for coolant, wherein the first flow channel has A first zone for initially cooling the refrigerant and a second zone for further cooling the refrigerant, wherein the refrigerant can flow in a high pressure phase in the first flow channel and can flow in the second refrigerant flow channel Flows under low pressure phase. Background technique [0002] In the refrigerant circuit of an air-conditioning system for a motor vehicle, a condenser is used to cool the refrigerant to a condensation temperature and subsequently to condense the refrigerant. This occurs in particular when using a refrigerant which undergoes at least one phase change from gaseous to liquid within the refrigerant circuit. Usually, the condenser has a collector in which a certain quantity of refrigerant can be stored in order to compensa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D7/00F25B39/04F28D9/00F28D21/00
CPCF28D2021/0084F28D7/0066F25B40/00F25B2309/061F28D9/0093F25B2500/18F25B2339/047F25B39/04F25B9/008F28D1/0417
Inventor 尤韦·福斯特加特佛列德·杜尔赫伯特·霍夫曼克里斯托夫·沃尔特
Owner MAHLE INT GMBH
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