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Refrigeration appliance comprising a defrost heater

A technology for refrigeration appliances and heating devices, which can be used in defrosting, household refrigeration devices, lighting and heating equipment, etc., and can solve the problems of sensor consumption

Active Publication Date: 2020-10-16
BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All these methods have in common that an additional, partly expensive sensor is required for frost detection

Method used

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  • Refrigeration appliance comprising a defrost heater
  • Refrigeration appliance comprising a defrost heater
  • Refrigeration appliance comprising a defrost heater

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0028] As an example for the refrigeration appliance according to the present invention, figure 1 The frost-free combination appliance is shown in a schematic cross section in the depth direction. In the body 1 of the refrigeration appliance, the two cavities are bounded by an inner container 2 which is preferably deep drawn in one piece of plastic. One of these cavities is a storage cavity (here, a conventional cold storage compartment 3). The other cavity is divided by a vertical intermediate wall 4 into a second storage cavity (here, a freezing compartment 5) and an evaporator cavity 6. The two storage cavities 3 and 5 are closed by doors 20 respectively. It goes without saying that the invention described below can also be applied to a refrigeration appliance having a single storage cavity or having more than two storage chambers.

[0029] The evaporator cavity 6 includes a figure 1 The lamella evaporator 7 arranged in the cross-section plane. In the free space 8 of the ev...

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PUM

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Abstract

The invention relates to a refrigeration appliance, in particular a household refrigeration appliance, comprising an evaporator (7), a fan (13) for driving an air flow through the evaporator (7), a storage chamber (3, 5) cooled by the air flow, a defrost heater (10) for defrosting the evaporator (7), and a control unit (18) for controlling the operation of the defrost heater (10), characterized inthat the control unit (18) is designed to compare a variable (I) representative of a pressure drop at the evaporator with a limit value (Iend) and to start the defrost heater (10) when said limit value is exceeded.

Description

Technical field [0001] The present invention relates to a refrigeration appliance with a defrosting heating device (especially a household refrigeration appliance of a non-frost structure type). In the refrigeration appliance, an evaporator to be defrosted by the defrosting heating device is placed in a storage cavity In a separate evaporator cavity, and the storage cavity is cooled by an air flow, the fan circulates the air flow between the evaporator cavity and the storage cavity. Background technique [0002] Moisture emitted from refrigerated items placed in the storage cavity or entering the storage cavity from the outside when the door of the storage cavity is opened may condense as frost on the evaporator over time. The increasing thickness of the frost layer over time not only hinders the air circulation but also hinders the heat exchange between the air circulating in contact with the evaporator and the refrigerant evaporated in the evaporator, so that as the thickness o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D21/00F25D21/02
CPCF25D21/002F25D21/02
Inventor A·巴布克F·奇弗罗代利
Owner BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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