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Household appliance containing a heat transfer fluid

A technology of household appliances and heat transfer fluid, which is applied in the field of household appliances, can solve the problems of not allowing use, low critical temperature, etc., achieve high-efficiency absorption, promote efficient heat absorption, and reduce the effect of long-term drying process

Inactive Publication Date: 2010-09-15
BOSCH SIEMENS HAUSGERATE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although carbon dioxide is non-flammable and has a GWP index as low as 1, carbon dioxide has a very low critical temperature which does not allow it to be used in heat pumps within household appliances constructed according to conventional technology

Method used

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  • Household appliance containing a heat transfer fluid
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  • Household appliance containing a heat transfer fluid

Examples

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Embodiment Construction

[0025] The drawings must be understood as schematic diagrams, which show only such details as are necessary for the ensuing description. For further details and implications of how to put the invention to practice, reference is made to the prior art documents cited herein and to the relevant knowledge of those skilled in the art.

[0026] figure 1 A domestic appliance 1 arranged as a clothes dryer 1 for drying wet laundry 3 is shown. It should be understood that this clothes dryer 1 may be an electrical appliance used only for drying, or an electrical appliance used for both washing and drying.

[0027] The clothes dryer 1 comprises a drying chamber 2 arranged as a rotatable drum 2 for holding wet laundry 3 to be dried by a flow of process air circulating in a closed process air circuit 4 . Process air is driven through the process air circuit 4 in a clockwise direction by means of a blower 5 . It should be clear that the placement of the blower 5 next to the drum 2 is onl...

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Abstract

The invention relates to a household appliance (1) comprising a drying chamber (2) for drying wet articles (3) therein, a process air loop (4) for circulating process air to dry the articles (3) and a heat pump (8, 9, 10, 11, 12). Said heat pump (8, 9, 10, 11, 12) comprises a heat transfer loop (8) containing a heat transfer fluid to be circulated through said heat transfer loop (8), an evaporator heat exchanger (9) for transferring heat from the process air into said heat transfer fluid by evaporating said heat transfer fluid, a liquefier heat exchanger (10) for transferring heat from said heat transfer fluid to the process air by liquefying said heat transfer fluid, a compressor (11) for compressing the heat transfer fluid and driving the heat transfer fluid through said heat transfer loop (8), and a nozzle (12) for decompressing said heat transfer fluid. Further, said heat transfer fluid has a critical temperature above 60 DEG C, a nominal heat of vaporization at boiling point of at least 220 kJ / kg, a GWP index of less than 150 and a lower flammability level of at least 0,1 kg / m3.

Description

technical field [0001] The invention relates to a household appliance comprising a drying chamber for drying wet items therein, a process air circuit for circulating process air in order to dry said items, and a heat pump, wherein the heat pump comprises a heat transfer circuit comprising a heat transfer fluid to be circulated through the heat transfer circuit; an evaporative heat exchanger for transferring heat from process air to the heat transfer fluid by evaporating the heat transfer fluid; a liquefaction heat exchanger for transferring heat by causing the heat transfer fluid to the heat transfer fluid liquefies to transfer heat from the heat transfer fluid to process air; a compressor for compressing the heat transfer fluid and driving the heat transfer fluid through the heat transfer circuit; and a nozzle for for depressurizing the heat transfer fluid. Background technique [0002] A domestic appliance of this type is known from patent publication EP 0 467 188 B1. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F58/24D06F58/26D06F58/22
CPCD06F58/22D06F58/24D06F58/26F25B30/02
Inventor J·M·科尔博朗萨尔瓦多J·贡萨尔维斯马西安R·圣马丁桑乔
Owner BOSCH SIEMENS HAUSGERATE GMBH
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