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Washing dryer

A washing-drying and drying technology, which is applied to washing devices, household clothes dryers, washing machines with containers, etc., can solve the problem of compressor work obstruction, large amount of liquid refrigerant and oil return, and inability to ensure the oil level of the compressor, etc. problems, to achieve the effect of suppressing performance degradation and preventing poor work

Inactive Publication Date: 2009-11-18
TOSHIBA LIFESTYLE PROD & SERVICES CORP
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AI Technical Summary

Problems solved by technology

As a result, the necessary oil level in the compressor cannot be ensured, which hinders the operation of the compressor.
[0009] In addition, in the above-mentioned heat pump, especially when the drying process is started (when the operation of the compressor is started), the refrigerant and oil remaining in the condenser and the evaporator may suddenly return to the compressor side.
[0010] Moreover, in the case of the above-mentioned second attempt to downsize the accumulator, it was found that since the storage capacity of the liquid becomes smaller, when the drying process is started (when the operation of the compressor is started), the liquid refrigerant and the oil The amount of return increases and cannot be accommodated in the accumulator, and the liquid refrigerant is sucked into the compressor, which may hinder the operation of the compressor

Method used

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Examples

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Embodiment Construction

[0029] (1) The first embodiment

[0030] Hereinafter, with regard to the first embodiment in which the present invention is applied to a drum type washing and drying machine, refer to Figure 1 to Figure 6 while explaining. figure 1 , schematically shows the overall configuration of the drum-type washing and drying machine 1 in this embodiment. Here, inside the casing 2 of the washing and drying machine 1, the cylindrical water tank 3 is supported by an elastic support mechanism 4 (only part of which is shown) in a state inclined from front to back.

[0031] In addition, a cylindrical rotating tank (drum) 5 is rotatably supported in the water tank 3 . The rotary tank 5 rotates about an inclination axis extending in the front-rear direction of the water tank 3 and inclined from a high front to a low rear. In the front part of this rotary tank 5, the opening part 6 which takes in and puts in and out of laundry is provided.

[0032] A plurality of holes 7 (only part of which...

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Abstract

The present invention relates to a washing dryer. The invention aims at the washing dryer with a drying function generated by a heat pump for obtaining the following purposes: inhibiting the performance reduction of heat pump, preventing the inferior operation of a compressor, and obtaining the miniaturization and light weight of the whole body. In a drying process, a fan (30) and the compressor (34) for cycling are driven, therefore the air in a sink (3) sequentially passes through an evaporator (32) and a condenser (33) in a ventilating pipe (26) and is changed to dry hot wind and is supplied into the sink (3) thereby recycling and drying the washed articles. A control device which can change the operation frequency of a converter of the compressor (34) for controlling the operation controls after a preset time period (30 minutes) from a drying step so that the compressor (34) operates with a preset rotating speed Rt (85Hz) lower than a target maximum frequency Rmax (100Hz). Therefore, the flowing-out of the oil from the compressor (34) can be restrained for always sustaining an ideal oil height.

Description

technical field [0001] The present invention relates to a washing and drying machine provided with a drying function by a heat pump. Background technique [0002] For example, among domestic washing and drying machines, washing and drying machines using heat pumps for drying operation instead of conventional drying heaters for drying operation have been provided in recent years (for example, refer to Patent Document 1). The washing and drying machine has a heat pump (refrigeration cycle) formed by connecting a compressor, a condenser, a capillary tube, and an evaporator in a closed loop through a refrigerant (refrigerant) pipeline, and the air in the washing tank is sequentially passed through the evaporator and condensed. The dryer returns to the drying circulation ventilation path of the sink. In this circulation ventilation path for drying, the air (hot air) heated by the condenser is supplied into the washing tub to absorb the moisture of the laundry, cooled and dehumid...

Claims

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Application Information

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IPC IPC(8): D06F25/00D06F58/10D06F58/28F25B30/00
CPCY02B40/72D06F58/206D06F2103/50D06F2105/26
Inventor 鹿岛弘次
Owner TOSHIBA LIFESTYLE PROD & SERVICES CORP
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