JP3812528B2 - Drum type washer / dryer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drum-type washing machine that sequentially performs various processes such as washing, rinsing, dehydration, and drying in a rotating drum.
[0002]
[Prior art]
Conventionally, this type of drum type washing and drying machine has a configuration as shown in FIG. Hereinafter, the configuration will be described.
[0003]
As shown in FIG. 9, the housing 1 supports a water tank 4 with a plurality of suspensions 2 and dampers 3 inside, and a door 5 that can be opened and closed is provided at the opening of the water tank 4. A rotating drum 6 is rotatably arranged in the water tank 4, and a plurality of water holes 7 and baffles 8 are provided in the rotating drum 6.
[0004]
A water supply valve 9 for washing and a water supply valve 10 for drying are provided in the housing 1, and a drainage port 11 provided in the water tank 4 and a drainage pump 12 are communicated by a drainage path 13. The blower 15 blows air into the water tank 4 via the blowout port 14. The heater 16 is communicated with the blower 15, the heat exchanger 17 is communicated with the water tank 4 and the blower 15, and the water tank 4, the blower 15, The heater 16 and the heat exchanger 17 constitute a series of air blowing paths. The water supply hose 18 allows water to flow from the drying water supply valve 10 into the heat exchanger 17 (see, for example, Patent Document 1).
[0005]
The operation in the above configuration will be described. When the laundry is put into the rotating drum 6 and the washing process is started, the washing water supply valve 9 is opened to supply water into the water tank 4 to a predetermined water level. Next, the rotary drum 6 is driven at a rotational speed of about 50 r / min, and the thrown-in clothes are lifted up by the baffle 8 and repeatedly dropped, and washed with the detergent water and the impact force when dropped onto the water surface.
[0006]
When the washing process ends, the drainage pump 12 is driven to drain the washing water through the drainage path 13. When drainage is completed, the rotating drum 6 is rotated at a high speed of about 1000 r / min to perform dehydration. Furthermore, when the dehydration process is completed, the process proceeds to the drying process.
[0007]
In the drying process, similarly to the washing process, the rotary drum 6 is driven, and hot air heated by the blower 15 and the heater 16 is blown from the blow-out port 14 to the clothes in the rotary drum 6 while stirring the laundry in the rotary drum 6. The water contained in the clothes is heated and evaporated.
[0008]
Further, high-temperature air containing steam is sent into the heat exchanger 17, mixed with the cooling water supplied from the drying water supply valve 10 into the heat exchanger 17, and heat-exchanged to cool and dehumidify. The dehumidified air is heated again by the heater 16 and sent into the rotary drum 6 to dry the clothes. This forms a series of drying cycles.
[0009]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-293278
[Problems to be solved by the invention]
In such a conventional configuration, in order to increase the efficiency during drying, it is necessary to secure a sufficient cross-sectional area in the heat exchanger 17 and / or the air blowing path. When clothing with pet hair attached thereto is dried, there is a problem in that it accumulates in the heat exchanger 17 and / or in the air flow path to hinder air flow and remarkably reduce the drying performance.
[0011]
In order to solve such a problem, there may be a means for separately providing a water supply path in the heat exchanger 17 and / or the air blowing path, and washing away clothes waste. It was difficult to obtain a sufficient amount of water because it was not possible to secure a sufficient amount of water supply to completely clean the route or both.
[0012]
SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and prevents clothing waste, etc., generated when drying clothes with long bristle feet or clothes with pet hair attached, from accumulating inside the heat exchanger. The purpose is to prevent the drying performance from deteriorating.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a rotating drum having a rotating shaft in a substantially horizontal direction and rotatably disposed in a water tank, a motor for driving the rotating drum, and water supply means for supplying water to the water tank. And heat exchange for dehumidifying the water evaporated from the laundry in the rotating drum in communication with the blowing means and the water tub, communicating with the blowing means and the water tub, with cooling water. And a foreign matter collecting rib composed of a plurality of partition plates substantially parallel to the air blowing direction inside the heat exchanger is provided below the heat exchanger , and water is supplied into the water tank. In this state, by rotating and stopping the rotating drum, the inside of the heat exchanger is washed with water inside the water tank.
[0014]
This creates a part that actively collects clothes scraps and foreign objects that accumulate on the heat exchanger, so that the clothes scraps generated when drying clothes with long bristle feet or clothes with pet hair attached are heated. Accumulation inside the exchanger can be prevented, and drying performance can be prevented from deteriorating.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
According to a first aspect of the present invention, there is provided a rotating drum having a rotating shaft in a substantially horizontal direction and rotatably disposed in a water tank, a motor for driving the rotating drum, and water supply for supplying water into the water tank. Means, air blowing means for blowing air into the water tank, heating means communicating with the air blowing means, heat for communicating with the air blowing means and the water tank and dehumidifying water evaporated from the laundry in the rotating drum with cooling water And a foreign matter collecting rib composed of a plurality of partition plates substantially parallel to the air blowing direction inside the heat exchanger is provided below the inside of the heat exchanger. by rotating and stopping the rotary drum in the water supply state, the interior of the heat exchanger is obtained by construction to washing with water inside a water tank, a clothing scraps and foreign matter deposited on the heat exchanger actively By making the part to collect Can clothes debris hair like long clothing or pet haired occurs when drying the clothes adhering can be prevented from depositing in the heat exchanger, drying performance can be prevented from decreasing .
[0016]
The invention according to claim 2 is a rotating drum having a rotating shaft in a substantially horizontal direction and rotatably disposed in the water tank, a motor for driving the rotating drum, water supply means for supplying water into the water tank, A blowing means for blowing air into the water tank, a heating means communicating with the blowing means, a heat exchanger communicating with the blowing means and the water tank and dehumidifying water evaporated from the laundry in the rotating drum with cooling water; A foreign matter collecting rib composed of a plurality of partition plates substantially parallel to the air blowing direction inside the heat exchanger is provided below the heat exchanger , and water is supplied into the water tank. In this configuration, the water inside the water tank is gradually drained while rotating the rotating drum in order to wash the inside of the heat exchanger. By making a part to collect , That clothes debris hair like long clothing or pet haired occurs when drying the clothes adhering can be prevented from depositing in the heat exchanger, drying performance can be prevented from decreasing it can.
[0017]
Invention according to claim 3, in the invention described in the claim 1 or 2, ribs for foreign matter trapping is formed as separate members and the heat exchanger, which has a detachable, washed Even if difficult foreign matter accumulates, it is not necessary to replace all the heat exchangers, serviceability can be improved, and costs required for service can be kept low.
[0018]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. In addition, the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description.
[0019]
Example 1
As shown in FIG. 1, the heat exchanger 17 communicates with a blower (blower means) 15 and the water tub 4, and dehumidifies the water evaporated from the laundry in the water tub 4 with cooling water. The air blowing path 18 communicates with the water tank 4 through the blowout port 14. Here, the heater 16 is constituted by a semiconductor heater having a positive temperature coefficient.
[0020]
The control device 19 is configured as shown in FIG. 2 and has a control means 20 constituted by a microcomputer. The control means 20 is connected to a washing water supply valve (water supply means) 9 via a load driving means 21. The operation of the water supply valve 10 for drying, the drainage pump 12, the blower 15, the heater 16, the motor 22 for driving the rotating drum 6 and the like are controlled, and a series of processes such as washing, rinsing, dehydration and drying are sequentially controlled.
[0021]
The control means 20 inputs information from the input setting means 23 for setting the driving course and the like, and displays it on the display means 24 based on the information to notify the user, and the input setting means 23 sets the operation start. Then, data from the water level detection means 25 for detecting the water level in the water tank 4 is input, and the water supply valve for washing 9, the water supply valve for drying 10, the drainage pump 12, the blower 15 are input via the load driving means 21. The operation is performed by controlling the operation of the heater 16, the motor 22, and the like.
[0022]
Although not shown, the water level detection means 25 is configured using a float switch or a piezoelectric element so as to output in accordance with the pressure of water inside the water tank 4.
[0023]
The control means 20 detects the rotational speed of the motor 22 by counting the pulse output from the motor rotational speed detection means 26 for a predetermined time. At this time, the control means 20 controls the load driving means 21 based on the information from the motor rotation speed detection means 26, and controls the motor 22 to a predetermined rotation speed by controlling the energization time of the motor 22. Yes.
[0024]
The motor 22 is directly connected to the rotating drum 6, and the rotational speed of the rotating drum 6 is controlled by controlling the rotational speed of the motor 22 by the control means 20.
[0025]
As shown in FIG. 3A, the heat exchanger 17 is provided with a foreign matter collecting rib 28 constituted by a slit-shaped partition plate 27, and the rib 28 is arranged below the heat exchanger 17. Has been established. Here, the length of the slit of the partition plate 27 is set to a length sufficient to prevent hair from being wound around, and as shown in FIG. 3B, the partition plate 27 is a single unit and can be replaced. It is said.
[0026]
Here, the control means 20 drives and stops the motor 22 in a state where water is supplied into the water tank 4, thereby rotating and stopping the rotating drum 6, so that the inside of the heat exchanger 17 is made into the water inside the water tank 4. It is configured to be washed with.
[0027]
The operation in the above configuration will be described. The basic operation from the washing process to the drying process is the same as that of the conventional example, and thus the description thereof is omitted.
[0028]
In the drying process, lint (hair and clothing waste) 29 that has entered the heat exchanger 17 by air blown by the blower 15 is accumulated on the ribs 28 for collecting foreign matter. The operation for cleaning the lint 29 accumulated in the heat exchanger 17 will be described with reference to FIG.
[0029]
In step 40, the control means 20 opens the washing water supply valve 9 and supplies water into the rotary drum 6. When it is detected in step 41 that the water level is a predetermined level based on a signal from the water level detection means 25, the washing water supply valve 9 is stopped in step 42, and thereby a certain amount of water is stored inside the water tank 4.
[0030]
Next, in step 43, the motor 22 is driven, and the rotating drum 6 is rotated at a speed of about 100 r / min to 300 r / min for a predetermined time. At this time, the water inside the water tank 4 is pushed into the heat exchanger 17 by the centrifugal pump effect caused by the rotation of the rotating drum 6, and as shown in FIG. 5A, the water level surface P1 inside the heat exchanger 17 is shown. Will rise.
[0031]
Next, since the centrifugal pump effect of the rotating drum 6 is weakened by lowering or stopping the rotational speed of the rotating drum 6 in step 44, the water pushed out to the heat exchanger 17 returns to the water tank 4 and results. As shown in FIG. 5B, the water level surface P2 inside the heat exchanger 17 is lowered. By repeating the operation from step 43 to step 44 a predetermined number of times, the lint 29 deposited on the wall surface inside the heat exchanger 17 is pulled away by the momentum of the water that has entered the heat exchanger 17.
[0032]
When the operation from step 43 to step 44 is repeated a predetermined number of times in step 45, the process proceeds to step 46, the drain pump 12 is driven, and the water in the water tank 4 is drained. When the water inside the water tank 4 is drained in step 47, the process proceeds to step 48, and the drain pump 12 is stopped. Through the operations from Step 40 to Step 48, the lint 29 inside the heat exchanger 17 can be discharged from the heat exchanger 17, and the drying performance due to the decrease in the air flow rate by the lint 21 in the drying process is lowered. Can be prevented.
[0033]
As described above, according to the present embodiment, by rotating and stopping the rotating drum 6 by driving and stopping the motor 22 in a state where water is supplied into the water tank 4, the inside of the heat exchanger 17 is set in the water tank 4. Since it is configured to be washed with water in the interior, clothing waste generated when drying clothes with long bristle feet or clothes with pet hair adhered to the inside of the heat exchanger 17 is accumulated. Therefore, it is possible to prevent a decrease in drying performance due to clogging of the air flow path, and thus it is possible to provide a drum-type washing and drying machine having a long life and high reliability.
[0034]
Further, a foreign matter collecting rib 28 is provided inside the heat exchanger 17, and this rib 28 is disposed below the heat exchanger 17, so that clothes waste and foreign matters accumulated on the heat exchanger 17 are positively collected. By making the portion to be collected, the inside of the heat exchanger 17 can be cleaned efficiently by the rotation of the rotating drum 6 even if water does not reach the entire heat exchanger 17.
[0035]
Further, the foreign matter collecting rib 28 is constituted by one or a plurality of slit-like partition plates 27 in the air blowing direction inside the heat exchanger 17, so that the air blowing during the heat exchange is not obstructed, and the slit Since it can be collected while preventing wrapping around the ribs of clothes with long hair and long hairs, the momentum of water circulating to the heat exchanger 17 by the rotation of the rotating drum 6 It is possible to effectively wash clothes scraps gathered on the ribs 28.
[0036]
Further, the foreign matter collecting rib 28 is a separate part from the heat exchanger main body and is detachable so that when the water inside the water tank 4 is circulated and washed to the heat exchanger by rotating the drum, foreign matter that is difficult to wash is present. Even in the case of accumulation, it is not necessary to replace all the heat exchangers 17, and the cost required for service can be kept low.
[0037]
Further, by circulating water only inside the heat exchanger 17, even if the heater 16 is constituted by a semiconductor heater having a positive temperature coefficient, the heater 16 is not splashed with water, and there is no risk of leakage during cleaning. A drum-type washing and drying machine that is safe and inexpensive can be configured.
[0038]
In the present embodiment, while the water tank 4 is supplied with water, the rotary drum 6 is rotated and stopped to clean the inside of the heat exchanger 17 with water inside the water tank 4, When the amount of water in the water tank 4 is large or when the rotational speed of the rotating drum 6 is increased, the water level surface inside the heat exchanger 17 rises from P1 and enters the rotating drum 4 through the air passage 18 having the blower 15 and the heater 16. It comes to circulate. In this case as well, the same effect can be obtained by appropriately waterproofing the heater 16 and the blower 15 such as configuring the heater 16 with a sheathed heater.
[0039]
(Example 2)
The control means 20 shown in FIG. 2 gradually drains the water inside the water tank 4 while rotating the rotating drum 6 while supplying water into the water tank 4, so that the inside of the heat exchanger 17 is made into the water inside the water tank 4. It is configured to be washed with. Other configurations are the same as those of the first embodiment.
[0040]
In the above configuration, the operation when cleaning the lint 29 accumulated in the heat exchanger 17 will be described with reference to FIG.
[0041]
In step 50, the control means 20 opens the washing water supply valve 9 and supplies water into the rotary drum 6. When it is detected at step 51 that the water level is at the predetermined level based on the signal from the water level detection means 25, the washing water supply valve 9 is stopped at step 52, and thereby a certain amount of water is stored inside the water tank.
[0042]
Next, in step 53, the motor 22 is driven, and in step 53, the rotary drum 6 is rotated at a speed of about 100 r / min to 300 r / min for a predetermined time. At this time, the water inside the water tank 4 is pushed out into the heat exchanger 17 due to the centrifugal pump effect caused by the rotation of the rotary drum 6, and the water level inside the heat exchanger 17 as shown in FIG. The plane P1 rises. The lint 29 deposited on the wall surface inside the heat exchanger 17 is pulled away by the momentum of the water pushed out into the heat exchanger 17.
[0043]
When a predetermined time elapses in step 54, the process proceeds to step 55, and the drainage pump 12 is driven while rotating the rotary drum 6. Thereby, the water inside the water tank 4 is gradually drained, and the amount of water pushed out to the heat exchanger 17 by the centrifugal pump effect of the rotating drum 6 is reduced. As a result, as shown in FIG. The internal water level surface P2 is lowered.
[0044]
Next, when it is detected in step 56 that the water in the water tank 4 has been drained, in step 57, the rotation of the motor 22 is stopped and the drain pump 12 is stopped. The lint 29 inside the heat exchanger 17 can be discharged from the heat exchanger 17 by the operations from Step 50 to Step 57.
[0045]
As described above, according to the present embodiment, the water inside the water tank 4 is gradually drained while rotating the rotary drum 6 while the water is being supplied into the water tank 4. Since it is configured to be washed with water, clothes waste generated when drying clothes with long bristle feet or clothes with pet hair attached are prevented from accumulating inside the heat exchanger 17. In addition, since it is possible to prevent the drying performance from being deteriorated due to clogging of the air flow path, it is possible to provide a drum-type washing and drying machine having a long life and high reliability.
[0046]
In the present embodiment, the water inside the water tank 4 is gradually drained while rotating the rotary drum 6 while the water is supplied into the water tank 4, so that the heat exchanger 17 is filled with the water inside the water tank 4. Although it is configured to wash, when the amount of water in the water tank 4 is large or when the rotational speed of the rotary drum 6 is increased, the water level surface inside the heat exchanger 17 rises above P1 and has the blower 15 and the heater 16. It circulates in the rotating drum 4 through the air passage 18. In this case as well, the same effect can be obtained by appropriately waterproofing the heater 16 and the blower 15 such as configuring the heater 16 with a sheathed heater.
[0047]
Example 3
The control means 20 shown in FIG. 2 controls the load driving means 21 based on the information from the motor rotation speed detection means 26, controls the motor 22 to a predetermined rotation speed, and according to the signal of the water level detection means 25, When the rotational speed of the motor 22 is controlled and the rotating drum 6 is rotated and stopped in a state where water is supplied into the water tank 4, water is circulated only inside the heat exchanger 17, so that the inside of the heat exchanger 17 is a water tank. 4 It is configured to wash with water inside. Other configurations are the same as those in the first or second embodiment.
[0048]
The operation in the above configuration will be described. When the rotating drum 6 rotates while water is accumulated in the water tank 4, the water in the water tank 4 is pushed out into the heat exchanger 17 due to the centrifugal pump effect caused by the rotation of the rotating drum 6, resulting in heat. The water level inside the exchanger 17 rises.
[0049]
Since the rise of the water level in the heat exchanger 17 has a functional relationship related to the rotational speed of the rotating drum 6 and the amount of water in the water tank 3, for example, as shown in FIG. If the rotation speed is set to be equal to or less than the rotation speed at point A, water can be distributed only to the heat exchanger 17. In FIG. 8, the water level surface height B indicates the upper limit water level surface of the heat exchanger 17.
[0050]
The control means 20 detects the amount of water inside the aquarium 4 by the water level detection device 25, drives the motor 22 according to the amount of water inside the aquarium 4, and controls the number of revolutions of the rotating drum 6 to a predetermined number of revolutions. Only the inside of the heat exchanger 17 is washed, and water is not applied to the heater 16 and the blower 15, and the heat exchanger 17 can be washed safely.
[0051]
As described above, according to the present embodiment, when the rotating drum 6 is rotated and stopped in a state where water is supplied into the water tank 4, and the inside of the heat exchanger 17 is washed with water inside the water tank 4, By controlling the number of rotations of the motor 22 according to the amount of water, the amount of water necessary for cleaning the inside of the heat exchanger 17 can be ensured, and a load more than necessary can be applied to the motor 22. Energy saving can be realized.
[0052]
【The invention's effect】
As described above, according to the first aspect of the present invention, the rotating drum having the rotating shaft in the substantially horizontal direction and rotatably disposed in the water tank, the motor for driving the rotating drum, Water supply means for supplying water into the water tank, air supply means for blowing air into the water tank, heating means in communication with the air supply means, water evaporated from the laundry in the rotating drum in communication with the air supply means and the water tank A heat exchanger that dehumidifies with cooling water, and a lower part inside the heat exchanger is provided with a foreign matter collecting rib composed of a plurality of partition plates substantially parallel to the blowing direction inside the heat exchanger. The rotating drum is rotated and stopped in a state where water is supplied into the water tank, so that the inside of the heat exchanger is washed with water inside the water tank, so that clothing waste accumulated in the heat exchanger Part that actively collects foreign matter It can be prevented from being deposited on the heat exchanger by making it possible to provide a highly reliable drum type washing and drying machine with a high lifetime.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of the main part of a drum-type washing / drying machine according to a first embodiment of the present invention. FIG. 2 is a block circuit diagram of the drum-type washing / drying machine. (B) Disassembled perspective view of the heat exchanger of the drum type washer / dryer [FIG. 4] Flow chart of the main part of the drum type washer / dryer [FIG. 5] (a) Cross-sectional view of the main part when the rotating drum is rotated with water supplied to the water tank of the drum type washing and drying machine (b) When the rotating drum is stopped with water supplied to the water tank of the drum type washing and drying machine FIG. 6 is a fragmentary sectional view of the drum-type washing / drying machine according to the second embodiment of the present invention. FIG. 7 (a) (a) The rotating drum is fed into the water tank of the drum-type washing / drying machine. Cross-sectional view of main parts when rotated (b) State in which water is supplied into the water tank of the drum type washing and drying machine FIG. 8 is a cross-sectional view of the main part when the rotating drum is stopped in FIG. 8. FIG. 9 is a relationship diagram between the drum rotation speed and the water level in the heat exchanger of the drum type washer / dryer of the third embodiment of the present invention. Cross section of drum type washer / dryer 【Explanation of symbols】
4 Water tank 6 Rotating drum 9 Water supply valve for washing (water supply means)
15 Blower (Blower unit)
16 Heater (heating means)
17 Heat exchanger 22 Motor

Claims (3)

A rotating drum having a rotating shaft in a substantially horizontal direction and rotatably disposed in the water tank, a motor for driving the rotating drum, water supply means for supplying water into the water tank, and air blowing means for blowing air into the water tank A heating means communicating with the blowing means, and a heat exchanger communicating with the blowing means and the water tub and dehumidifying moisture evaporated from the laundry in the rotating drum with cooling water , Below, a rib for collecting foreign substances is provided, which is composed of a plurality of partition plates substantially parallel to the air blowing direction inside the heat exchanger, and rotates and stops the rotating drum in a state where water is supplied into the water tank. Thus, the drum type washing and drying machine configured to wash the inside of the heat exchanger with water inside the water tank. A rotating drum having a rotating shaft in a substantially horizontal direction and rotatably disposed in the water tank, a motor for driving the rotating drum, water supply means for supplying water into the water tank, and air blowing means for blowing air into the water tank A heating means communicating with the blowing means, and a heat exchanger communicating with the blowing means and the water tub and dehumidifying moisture evaporated from the laundry in the rotating drum with cooling water , Below, a rib for collecting foreign matter is provided, which is composed of a plurality of partition plates substantially parallel to the air blowing direction inside the heat exchanger, and gradually rotates while rotating the rotating drum while water is supplied into the water tank. A drum-type washing and drying machine configured to wash the inside of the heat exchanger by draining the water supply inside the water tank. Ribs for foreign matter collecting constitute a separate member and said heat exchanger, removable and drum-type washing and drying machine according to claim 1 or 2.

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