Heat exchanger with cold accumulator
A heat exchanger and cold storage technology, applied in heat exchange equipment, heat exchange materials, heat storage equipment, etc., can solve problems such as consumption, multiple fuels, and inability to provide cold air
Inactive Publication Date: 2012-01-25
BEHR GMBH & CO KG
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Problems solved by technology
Therefore, the air conditioner cannot provide the necessary cold air when it is idling.
Although this problem can also be partly solved by keeping the engine running while the A / C is on at a standstill, this results in higher fuel consumption
Method used
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Embodiment Construction
[0059] Only the evaporator 1 of a vehicle air-conditioning system with a refrigerant circuit (in this case R134a is used as refrigerant, but other refrigerants such as carbon dioxide can also be used, for example, carbon dioxide) is shown for the temperature control of the vehicle interior. In order to achieve a sufficient cooling efficiency, at least for a short period of time, even when the engine is at a standstill, the air conditioning system has a cold store 4 integrated with the evaporator 1 . The cold storage device is composed of many cold storage elements 5, and the cold storage elements contain a cold storage medium. During normal operation, the cold storage elements are cooled by the refrigerant passing through the evaporator. The cold storage element 5 is formed by a region specially equipped with aluminum flat tubes 6 , which will be described in more detail below. n-Decanol is used as cold storage medium in this embodiment. You can also choose tetradecane, penta...
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Abstract
The invention relates to a heat exchanger, in particular an evaporator (1), with a plurality of refrigerant-carrying pipes (6, 7) which are arranged next to one another and end in at least one collecting vessel (9), and with at least one cold accumulator (4), in which a cold accumulating medium is provided, wherein the evaporator (1) has two regions arranged parallel to each other, a first region(1') and a second region (1''), and the cold accumulator (4) is arranged in the second region (1''). In this case, the refrigerant-carrying pipes (6, 7) of the first and second regions (1',1'') are arranged in line with one another and have a width corresponding to one another (b1, b2, b3), and the first and second regions (1', 1'') have common, continuous corrugated ribs (8).
Description
technical field [0001] The invention relates to a heat exchanger, especially a heat exchanger with a cool accumulator used in an air-conditioning system of an automobile. Background technique [0002] A major goal of automakers is to reduce the fuel consumption of cars. One way to reduce fuel consumption is to turn off the engine when the car is temporarily stopped, for example when stopped at a traffic light. This temporary stop of the engine is called idling. This measure is already used in contemporary vehicles with low fuel consumption, for example vehicles with a displacement of 3 liters. In urban traffic, the engine is switched off for 25-30% of the driving time. [0003] Some cars don't have air conditioning because when the engine stops, the compressor necessary for the air conditioning loses power. Therefore, the air conditioner cannot provide the necessary cold air when it is in an idling state. Although this problem can also be partly solved by continuing to ...
Claims
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IPC IPC(8): F28D20/02F28D1/053
CPCY02E60/147B60H1/3227F28D1/05391Y02E60/145F28D20/028B60H1/005C09K5/063F28F21/06F28D20/02F28D2021/0085B60H1/00335F25B39/02Y02E60/14F28D1/053
Inventor 米夏埃尔·科尔拉尔夫·曼斯基托马斯·施特劳斯克里斯托夫·瓦尔特
Owner BEHR GMBH & CO KG