Heat exchanger for a beverage preparation apparatus and the beverage preparation apparatus
A beverage preparation device and heat exchanger technology, which is applied in beverage preparation devices, household refrigeration devices, cooling fluid circulation devices, etc., can solve the problems of reducing the efficiency of heat exchangers, achieve improved heat transfer, good thermal contact, and reduce volume effect
Pending Publication Date: 2020-02-21
FRANKE KAFFEEMASCHEN
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- Claims
- Application Information
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Problems solved by technology
Conversely, a shorter flow path reduces the efficiency of the heat exchanger
Method used
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[0018] exist figure 1 The heat exchanger 10 shown in has an inner tube 11 and an outer sleeve 12 arranged coaxially around the inner tube. The sleeve 12 is closed at the end so that only the end of the inner tube 11 protrudes. The sleeve 12 has at its two ends an inlet 12a and an outlet 12b opening axially into said sleeve. The liquid to be cooled flows through the inner tube 11 in the direction of the arrow. Fresh water used as coolant flows through the casing 12 in the opposite direction and flows around the outer wall of the inner tube 11 , thereby coming into thermal contact with the cooling liquid in the casing 12 via the liquid in the inner tube 11 . The liquid to be cooled, ie the freshly brewed hot beverage, releases its heat on its way through the inner tube 11 to the cooling water in the sleeve 12 , which is thus heated.
[0019] In one exemplary configuration, the inner tube 11 has an inner diameter of 3 mm and a wall thickness of 0.5 mm. The inner diameter of t...
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The invention relates to a heat exchanger for a beverage preparation apparatus and the beverage preparation apparatus, wherein the beverage preparation apparatus is used for preparing a freshly brewedand cooled beverage. The heat exchanger has an internal flow path enables to-be-cooled beverage to flow therethrough, and an external flow path surronding the internal flow path, wherein an annular cavity formed between the internal and external flow paths allow a coolant to flow therethrough, the internal and external flow paths are separated by fluids, and are in relative thermal-contact. Herein, a build-in member is arranged in the internal flow path and extends along with the flowing direction, wherein the build-in member enables the to-be-cooled fluid inside the internal flow path to flow by. Through the build-in member, firstly, the volume of the interior of the internal flow path is reduced, and secondly, heat transfer is improved since the to-be-cooled fluid must flow through a gap between the build-in member and the internal flow path, so that better thermal-contact between the to-be-cooled fluid in the internal flow path and the coolant flowing through the external flow path.
Description
technical field [0001] The present disclosure relates to a heat exchanger for a beverage preparation device for preparing a freshly brewed, cooled beverage and a beverage preparation device. Furthermore, the present disclosure relates to such a beverage preparation device for preparing a freshly brewed cooled beverage, the beverage preparation device having a heat exchanger. Background technique [0002] Beverage preparation devices are known which prepare and dispense freshly brewed hot beverages, such as tea or coffee, in portions. Furthermore, in order to be able to offer a greater variety of products, there is a need to be able to prepare and dispense cooled coffee or tea beverages. But at this time, instant drinks are used in most cases. [0003] A device for preparing freshly brewed cooled coffee is known from EP 2 278 240 A2. Here, freshly brewed coffee from the brewing device is cooled via a heat exchanger. As cooling water, pre-cooled tap water is used, which is...
Claims
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IPC IPC(8): F25D31/00F25D23/00F25D17/02
CPCF25D31/002F25D23/00F25D17/02A47J31/4403
Inventor H·维特利M·图里
Owner FRANKE KAFFEEMASCHEN