JP2011067308A - Washing and drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing and drying machine having an outside air guide mechanism which suppresses air leakage except from an outside air guide part, is highly energy-saving, compact, and excellent in cost effectiveness. <P>SOLUTION: A filter part 11 is attached with an outside air guide unit 10 provided with an outside air guide valve 7 where a packing 13 is attached to a shutter 14 and an outside guide valve drive motor 18. A structure connected to the filter part 11 and the shutter 14 are sealed to ensure high airtightness of the outside air guide mechanism, and the number of components is reduced to suppress a cost increase. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a drum-type washing / drying machine, and more specifically, a rotating drum is installed in a water tank so that the rotational axis direction is horizontal or inclined downward from the horizontal direction toward the rear, and is used in each step of washing, rinsing, and dewatering. In addition, in order to improve the drying efficiency during the drying process of drying the laundry by sucking the air in the water tank with a blower fan, passing it through the evaporator and condenser, dehumidifying and heating, and then blowing into the water tank, The present invention relates to a washing / drying machine having a mechanism structure for introducing outside air.

Such a washing / drying machine is already known to be equipped with a refrigeration cycle unit for the drying process (see, for example, Patent Document 1).
The concept will be described with reference to FIG. The refrigeration cycle unit 1 is built in the washing machine main body 2 and is connected in the middle of a circulation ventilation path having a blower fan 3. As a result, the circulation air flow path sucks and exhausts the air in the water tank 4 by driving the blower fan 3, introduces it into the refrigeration cycle unit 1 from its suction inlet, and dehumidifies it by the evaporator 5 and heats by the condenser 6. And then drying the laundry in the rotating drum 17 by repeatedly discharging the air into the water tank 4 and returning it to the water tank 4 to dry the laundry in the rotating drum 17. A later drying step is performed.

  When the amount of superheat from the condenser 6 increases during the drying process, the outside air introduction valve 7 is opened, fresh air is sucked from the outside air introduction port 8, and the air is blown out from the exhaust port 9. Thus, drying efficiency can be increased by releasing the amount of heat in the blower path.

  As this outside air introduction valve 7, the one described in Patent Document 2 is generally used, and the outside air can be introduced by incorporating this outside air into the blower unit.

JP 2008-79859 A Japanese Patent Application Laid-Open No. 09-264652

  However, in the conventional outside air introduction structure, since the outside air introduction unit 10 and the air passage are formed separately, a gap 21 is formed between the outside air introduction unit 10 and the air passage, and even when it is not desired to introduce outside air, Phenomenon that inhales occurs. In particular, it is necessary to raise the temperature of the laundry in the drum in the first half of the drying period where outside air should not be introduced. However, if the temperature rise is hindered by the introduction of outside air, the drying efficiency is lowered.

  Moreover, since the outside air introduction unit 10 is a separate body, there is a problem in compactness and cost.

  An object of the present invention is to provide a washing / drying machine having an outside air introduction mechanism that suppresses air leakage from other than the outside air introduction section, has high energy efficiency and is compact, and is excellent in cost.

  In order to achieve the above object, the washing / drying machine of the present invention has a rotating drum installed in a water tank so that the direction of the rotation axis is horizontal or tilted downward from the horizontal direction toward the rear, and is blown through a circulation blowing path by a blower fan. It has a filter part that sucks air in the water tank and catches dust, and this filter part is equipped with an outside air introduction unit having an outside air introduction valve with a packing attached to a shutter and an outside air introduction valve driving motor. And an outside air introduction mechanism configured to seal the structure communicating with the filter unit and the shutter.

  Thereby, the sealing performance is high, and the number of parts and the cost can be reduced.

  According to the washing / drying machine of the present invention, the sealability of the outside air introduction mechanism is high, and the number of parts can be reduced to reduce the cost.

  In addition, the grid for preventing touching prevents the packing from being touched by a human hand, thereby preventing problems. Since the structure is simple, the number of parts can be greatly reduced and the cost can be reduced.

Conceptual diagram of drying path in drum-type washing and drying machine in the present embodiment Rear perspective view of the drum type washing and drying machine Sectional view of the drum-type washing and drying machine External view showing outside air introduction structure of the drum type washing and drying machine Perspective view of the main part showing the outside air introduction structure of the drum type washing and drying machine AA main part sectional view showing the outside air introduction structure of the drum type washing and drying machine The principal part front view which shows the grating | lattice 15 vicinity of the external air introduction structure of the drum type washing-drying machine BB principal part sectional drawing which shows the external air introduction structure of the drum type washing-drying machine The graph which shows the change of the refrigerating cycle operation control in this Embodiment Front view showing a conventional outside air introduction mechanism Sectional view showing a conventional outside air introduction mechanism External view of outside air introduction structure of conventional drum type washing and drying machine Partial sectional view of outside air introduction structure of a conventional drum type washing and drying machine

  In the first aspect of the invention, the rotating drum is installed in the water tank so that the rotation axis direction is horizontal or rearward and inclined downward from the horizontal direction, and the air in the water tank is sucked through the circulation air flow path by the blower fan. A filter unit that catches dust, and an external air introduction unit that includes an outside air introduction valve having a shutter attached to a packing and a motor for driving the outside air introduction valve is attached to the filter unit, and a structure that communicates with the filter unit By providing the outside air introduction mechanism configured so that the shutter and the shutter are sealed, the outside air introduction mechanism has high sealing performance, and the number of parts can be reduced to reduce the cost.

  According to the second invention, in the first invention, by providing a packing preventing grid for the packing at the communication port of the filter portion, it is possible to prevent troubles and breakage of the outside air introduction mechanism due to touch.

  The outside air introduction structure according to the embodiment of the present invention will be described below with reference to the drawings for understanding of the present invention. The following description is a specific example of the present invention and does not limit the content of the claims.

(Embodiment 1)
A drum-type washing and drying machine 2 according to an embodiment of the present invention is shown in a conceptual diagram in FIG. 1 and an external view in FIG. The rotating drum 17 is installed in the water tank 4 so that the rotation axis direction is horizontal or inclined downward from the horizontal direction toward the rear, and in addition to the washing, rinsing, and dehydration processes, A drying step of drying the laundry by sucking air in the water tank 4 and passing through the filter unit 11 that catches dust, passing through the evaporator 5 and the condenser 6, dehumidifying and heating, and then blowing into the water tank 4. I do. For this drying step, the refrigeration cycle unit 1 and the blower fan 3 that housed the evaporator 5, the condenser 6, and the compressor 16 that circulates the refrigerant in them were connected.

  The filter unit 11 is equipped with an outside air introduction unit 10 and is provided with an outside air introduction port 8 and an exhaust port 9, and this outside air introduction is configured such that the outside air introduction valve 7 controls the outside air introduction.

  The outside air introduction valve 7 is driven by an outside air introduction valve drive motor 18 and has a structure in which a packing 13 is attached to the shutter 14 so that it directly seals with a structure communicating with the filter unit 11. ing.

  Further, a grid 15 is provided at the communication port 19 with the filter unit 11 so that the shutter 14 cannot be touched, thereby preventing the outside air introduction mechanism from being damaged due to touch.

  In addition, even when detergent and water enter from the communication port 19 between the filter unit 11 and the filter unit 11 due to an incorrect operation, the groove 20 is formed on the structure side even if the shutter 14 is closed or opened. By providing, it functions as a water conduit and does not directly enter the motor unit.

  The outside air introduction motor 18 is fixed to a half-shell structure 22, and the half-shell structure 22 is provided with ribs 23 against water entering from the outside. It has a structure that is combined with a labyrinth to prevent the ingress of water from the outside.

  FIG. 9 compares the rotation speed of the compressor 16 and the discharge temperature of the compressor 16. The conventional one cannot increase the rotation speed of the compressor 16 in the first half. This is because the gap 21 between the conventional outside air introduction unit 10 and the casing is generated, so that outside air is sucked and efficiency is deteriorated. Therefore, the discharge temperature does not rise to the middle stage of drying, and the drying efficiency becomes poor.

  With the outside air introduction unit of the present invention, since the sealing performance is not poor, the rotation speed of the compressor can be increased from the first half of drying, and the discharge temperature can be increased in the first half of drying, so the rotation speed of the compressor can be decreased. It becomes possible and can contribute to energy saving. In this test, there was a contribution of 30 Wh (total power consumption 860 wh).

  Also, by reducing the number of parts, it has become possible to halve the conventional cost.

  As described above, the washing / drying machine according to the present invention can improve the sealing performance when the outside air is introduced, and thus is useful for a drying device or the like.

7 Outside air introduction valve 10 Outside air introduction unit 11 Filter unit 13 Packing 14 Shutter 18 Motor for driving outside air introduction valve

Claims (2)

A rotating drum is installed in the water tank so that the direction of the rotation axis is horizontal or tilted downward from the horizontal direction toward the rear, and a filter unit that sucks air in the water tank through a circulating air passage by a blower fan to catch dust The filter portion is provided with an outside air introduction unit including an outside air introduction valve having a packing attached to the shutter and an outside air introduction valve driving motor, and the structure communicating with the filter portion and the shutter are sealed. A washing and drying machine having an outside air introduction mechanism configured to perform the above. The washing / drying machine according to claim 1, wherein a packing preventing grid for packing is provided at a communication port of the filter portion.