JPH02114999A - Clothing drying machine - Google Patents

Abstract

PURPOSE:To miniaturize a machine body and improve setting property and enable uncomfortable feeling to be prevented from being generated on residents by mixing humid air with waterworks water and cooling water in a containing section, to jet, scatter, and cool them, and by condensing included water content to remove it. CONSTITUTION:An object A to be washed in a drum 4 is agitated by a lifter 5, and air fed from the jet side of a circulating fan casing 12 is passed through a condensing section 23, and is heated by a heater 31, and is turned into hot air, and is sucked up into the drum 4 from a hot air spraying port 10. Then, the hot air comes in contact with the object A to be washed, and included water is evaporated and is turned into humid air including water content, and the humid air is discharged from the drum 4 and is fed to the condensing section 23 and comes in contact with jet cooling water B from a water jetting pump 24 and is cooled, and water content in humid air is condensed, and moisture is removed. After that, air after the moisture is removed is double-heated by the heater 31, and is fed to the drum 4. After that, by the circulation of the humid air, the washed object A is dried, and in the meantime, partial condensed water is circulated in the condensing section 23 by the cooling water C and the pump 24, and residual one together with the cooling water C is discharged outside a machine from a drain pipe 28.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a clothes dryer equipped with a condensing section capable of condensing moisture in humid air discharged from a drum containing laundry to be dried. The present invention relates to clothes dryers, and in particular, to clothes dryers that are aimed at downsizing the machine body and improving ease of installation.

[Prior Art] The following are known as conventional clothes dryers equipped with a condensing section.

That is, this device includes a condensing section consisting of a heat exchanger and a cooling fan, sends humid air discharged from the drum to the heat exchanger, cools the heat exchanger with the cooling fan, and cools the humid air. The temperature is lowered, the water in it is condensed, and this condensed water is discharged outside the machine. On the other hand, the laundry was dried by dehumidifying air whose temperature and absolute humidity had been lowered by heating it with a heater, and circulating the air by blowing it to the drum.

A related example of this type of clothes dryer is disclosed in Japanese Patent Application Laid-Open No. 58-36599, for example.

[Problems to be Solved by the Invention] The above conventional technology uses a cooling fan to suck in air from outside the machine in order to condense humid air that contains moisture evaporated from laundry and has a higher temperature than outside air. Humid air is blown into a heat exchanger that is cooled by the outside air (i.e., the air inside the room where the clothes dryer is installed) that is discharged to the dryer, and by lowering the temperature, the absolute humidity of the air is also lowered. As a result, there were the following problems.

(2) Since it is necessary to include a heat exchanger and a cooling fan as a condensing section, the size of the machine becomes large.

■The installation location of the clothes dryer is limited to a place where the cooling fan can take in and exhaust air, making it difficult to install.

■As the usage time passes, the temperature of the outside air discharged from the cooling fan (i.e., the temperature of the air in the room where this clothes dryer is installed) gradually rises, which may cause discomfort to the occupants. .

An object of the present invention is to solve the above-mentioned problems of the prior art and provide a clothes dryer that has a small body, is easy to install, and does not cause discomfort to occupants. It is.

[Means for solving the problem] In order to solve the above problems, the moxibustion device has a drum, which is a drying container, which is horizontally supported in the body of the machine. Humid air containing moisture evaporated from the stored laundry is discharged from the drum and sent to the condensing section by a circulation fan, and the humid air is cooled by tap water supplied to the condensing section from a water supply solenoid valve. The laundry is dried by condensing and removing the moisture contained therein, passing the dehumidified air through a heater to heat it, and blowing it into the drum for circulation. In the dryer, the condensing section has one end connected to the discharge side of a fan casing of a circulation fan, the other end connected to a first duct facing downward of the machine body, and one end connected to the first duct. A second duct was connected to the other end, and the other end was connected to the duct portion housing the heater, and a second duct was formed at the bottom of the second duct. It has a cooling water storage part that can store water, and a drain pipe rising from the bottom of the cooling water storage part, and has an 11-port diameter or a water absorption pipe that opens at the lower side of the cooling water storage part. a water injection pump attached to the upper side of the cooling water storage section, and a water pump connecting the water injection pump and the water intake port, and the water injection pump is connected to the water supply W1 magnetic valve. a nozzle portion, a spout provided in front of the nozzle portion for spouting water into the second duct, and a water pumping port to which the water pumping pipe is connected; The 11th m part has a nozzle attached to the bottom of the cooling water storage part with the spout facing upward, and this nozzle is connected to a water supply electromagnetic pump. It is connected to the valve.

More details are as follows.

The above object is to communicate the humid air discharge side of the drum with the duct section housing the heater without using the heat exchanger and cooling fan of the prior art described above. In a duct (air passage) consisting of a first duct and a second duct, tap water is supplied through a water supply solenoid valve to humid air discharged from the drum.
Cooling water (hereinafter referred to as cooling water) is sprayed and sprayed to lower the temperature and absolute humidity of the humid air so that the moisture contained therein can be condensed. A cooling water storage section is provided to temporarily store the cooling water, and the cooling water stored there is pumped up by a water injection pump operated by the injection of cooling water (tap water) supplied from the water supply solenoid valve, Mix with the cooling water and inject.
Alternatively, the cooling water supplied from the water supply electromagnetic valve is injected into the cooling water storage part through a nozzle to disturb the cooling water in the cooling water storage part.

This is achieved by increasing the heat exchange efficiency between the cooling water and the humid air by scattering it and allowing it to come into contact with the humid air.
By arranging an inverted top-shaped cylindrical body to cover the rising part of the drain pipe, the opening of the drain pipe can be made into a siphon structure, completely preventing the leakage of humid air from the drain pipe to the outside of the aircraft. can be prevented.

[Operation: Humid air containing moisture evaporated from the laundry is transferred from the drum to the first drum. Air is blown to the second duct, and within this duct, the humid air is cooled with cooling water injected and sprayed into the duct through the water supply solenoid valve, thereby lowering its temperature and condensing the moisture. Then, the dehumidified air, whose temperature and absolute humidity have been lowered, is heated by a heater, and is blown to the drum again for circulation, thereby performing a drying operation. In this process, a part of the condensed water and the cooling water injected and sprayed through the water supply solenoid valve is transferred to a water injection pump or nozzle operated by the injection of cooling water newly supplied through the water supply solenoid valve. It is circulated by the jet stream from the air, and the remainder is discharged outside the machine from the drain port.

In the drying operation described above, the cooling water supplied through the water supply solenoid valve and the jet stream from the water injection pump or nozzle are used to circulate or stir the water.

The humid air from the drum is cooled by spraying and dispersing the already supplied cooling water remaining in the cooling water storage section into the duct.

The amount of cooling water increases compared to the amount of water supplied from the water supply electromagnetic valve, and the humid air can be efficiently cooled, so that the amount of water supplied can be saved.

In addition, since the heat of the humid air is received by the cooling water and the water is drained, the amount of heat that increases the temperature in the installed room is only the heat radiation flow from the body of the machine such as the drum, which increases the temperature in the room. can be suppressed slightly.

Furthermore, unlike the conventional technology, since a heat exchanger and a cooling fan are not used, there is no need for a space to house them, and the aircraft body can be made smaller.

Note that if the opening of the drain pipe has a siphon structure, leakage of humid air from the drain pipe to the outside of the machine can be completely prevented, and an increase in indoor humidity can also be suppressed.

[Example] Hereinafter, the present invention will be explained by examples.

FIG. 1 is a longitudinal cross-sectional view showing a clothes dryer according to a first embodiment of the present invention, FIG. FIG. 2 is a sectional view of a main part showing details of the water injection pump shown in the figure.

The outline of this clothes dryer will be explained using a drawing.This clothes dryer has a drum 4, which is a drying container, which is horizontally supported inside the machine, and contains water evaporated from the laundry A stored in the drum 4. Humid air is discharged from the drum 4 by the circulation fan 20 and sent to the condensing section (details will be described later), and tap water is supplied to the condensing section through the water supply solenoid valve 32.
The humid air is cooled to condense and remove the moisture contained therein, the dehumidified air is heated by passing through the heater 31, and the air is blown into the drum 4 and circulated to perform the washing. The condensing part is configured to dry the object A, and the condensing part has one end connected to the discharge side of the fan casing 12 of the circulation fan 2o, and the other end connected to a first part facing downward of the machine body. A duct 25, a second duct 26 whose negative end is connected to the other end of the first duct 25, and whose other end is connected to the duct portion 8d housing the heater 31, and a bottom portion of the second duct 26. was formed. A cooling water storage section 27 that can store water, a drain pipe 28 rising from the bottom of the cooling water storage section 27, a water intake port 29 opened at the lower side of the cooling water storage section 27, and the cooling water storage section 27. It has a water injection pump 24 attached to the upper side of the housing part 27 and a pumping pipe 30 connecting the water injection pump 24 and the water intake port 29, and the water injection pump 24 is connected to a water supply electromagnetic valve 32. It has a nozzle part 24a, a spout 24c provided in front of the nozzle part 24a for jetting water into the second duct 26, and a water pumping port 24d to which the water pumping pipe 30 is connected. and a pumping part 24b formed to surround the nozzle part 24a.

This will be explained in detail below.

In FIG. 1, 1 is an outer frame which is an exterior part supported on the floor by rubber legs 1a, 2 is an inlet port for laundry A provided at the center of the front surface of this outer frame 1, and 3 is: As shown in FIG. 1, the lid is hinged to the intake port 2 so that the inner edge 3a of the lid is in close contact with the intake port 2 when the lid is closed. 4
is a drum that is horizontally supported within the outer frame 1 and functions as a drying container.During drying, this drum 4
In order to stir the laundry A, a cylindrical part 5 is formed to protrude toward the center from the inner periphery or has a lid 5a, and a cylindrical body is supported by a bearing 9 fixed to a drum support 8 described later. It consists of a side plate 6 having a portion 6a, and a side plate 7 having a convex portion 7a formed inwardly in the center and a discharge hole 7b for discharging humid air containing moisture evaporated from the laundry A. It is something. Reference numeral 8 denotes a drum support body fixed inside the center of the front surface of the outer frame 1, and this drum support body 8 includes a cylindrical part 8a fitted into the intake port 2 and a cylinder of the side plate 6 of the drum 4. A cylindrical body part 8b into which the body part 6a is fitted, a cylindrical body part 8c to which a bearing 9 (described later) is fixed, and the air after dehumidifying moisture is heated and heated to be heated with hot air, which is described later. It consists of a duct portion 8d leading to the air inlet 10. 9 is a ring-shaped bearing made of a wear-resistant plastic material (for example, polyacetal resin, etc.) or a felt material with low friction; This is a gap space and serves as a hot air blowing port into the drum 4.

11 is a bearing plate fastened and fixed to the rear surface of the outer frame 1; 12 is a bearing plate fastened and fixed to the rear surface of the outer frame 1;
This is a fan casing for a circulation fan 20, which will be described later, which has a cylindrical bearing cylinder part 12a in the center and a suction port 12b for sucking humid air from the drum 4 in the outer peripheral part. This fan casing 12 is fastened and fixed to the bearing plate 11. 13 is a drum hub fixed to the center of the convex portion 7a of the side plate 7 of the drum 4 (that is, the axis of the drum 4); 14 is the drum hub 13;
The drum shaft 14 is supported by a bearing 15 fitted into the bearing cylinder portion 12a to rotatably support the drum 4.

16 is a protective cover for the laundry A that is detachably attached to a portion of the drum shaft 14 that protrudes into the inside of the drum 4, has a grid pattern on its entire surface, and has ventilation holes 16a. 17 is a back surface of this protective cover 16. is attached to the laundry A during drying operation.
This is a mesh-like cloth waste filter that captures cloth waste generated from.

18 is a felt ring for airtightness that is fixed to the fan casing 12 and has its outer peripheral end pressed against the side plate 7 of the drum 4; 19 is a fan shaft that is press-fitted and fixed into the end of the bearing cylinder portion 12a; 20 is rotatably supported by this fan shaft 19, sucks humid air containing moisture evaporated from the laundry A from the drum 4, and sends it to a condensing section 23, which will be described later. A heater 31 which is a heating device. A circulation fan 21 is a fan pulley integrally molded with the circulation fan 20, and a bearing 22 is press-fitted into the center of the circulation fan 20, that is, the center of the fan pulley 21.

23 is a condensing unit that condenses moisture contained in the humid air blown from the circulation fan 20, and this condensing unit 23 has a water jet equipped to cool the humid air by spraying and spraying cooling water. Pump 24 (the detailed structure will be described later)
and a first duct 25 that is connected to the discharge side of the fan casing 12 and is disposed toward the bottom of the machine body, one end of which is connected to the lower end of the first duct 25, and the other end of which is connected to the drum support. The second duct 26 connected to the duct portion 8d of No. 8 and the bottom of this second duct 26 are formed. Cooling water storage section 2 that can temporarily store the sprayed/dispersed cooling water
7, a drain pipe 28 rising from the bottom of the cooling water storage section 27 and disposed so that its opening 28a is located above the water intake port 29, which will be described later, and a drain pipe 28 near the bottom of the cooling water storage section 27. It consists of a water suction port 29 opened at , and a pumping pipe 30 connecting this water suction 29 to the pumping port 24d of the water injection pump 24 .

31 is a heater which is a drying heat source installed in the duct portion 8d of the drum support 8 with electrical insulation; 32 is a small flow type water supply solenoid valve equipped to feed tap water to the water injection pump 24; , 33 is a water supply hose that connects this water supply solenoid valve 32 and a water faucet (not shown), and 34 is a connection between the discharge side of the water supply solenoid valve 32 and the nozzle portion 2 of the water injection pump 24.
The water injection hose 35 connecting to the drain pipe 4a is a drain hose connected to the drain pipe 28.

Further, in FIG. 2, reference numeral 36 is a motor for driving the drum 4 and the circulation fan 20, and a pulley 37 for driving the drum 4 is attached to the shaft end of the driving motor 36. circulation fan 2
A driving pulley 38 is fastened to each of the two ends. 3
9 is a belt hung between the outer periphery of the drum 4 and the pulley 37, and 40 is a belt.

A belt hung between fan pulley 21 and pulley 38,
41 is a tension wheel for the belt 39, and 42 is a back cover (shown in FIG. 1).

Details of the water injection pump 24 described above will be explained using FIG. 3.

This water injection pump 24 includes: (1) a nozzle portion 24a connected to the tip of a water injection hose 34; A water pumping part 24 having a water pumping port 24d.
b. Then, tap water (
The cooling water) is jetted from the nozzle part 24a, mixed with the cooling water pumped up from the cooling water storage part 27 through the pumping pipe 30 at the spout 24G, and then jetted and sprayed into the condensing part 23. ing.

The drying operation of the clothes dryer configured in this way will be explained next.

Load the laundry A into the drum 4, close the lid 3, and turn on the drive motor 36. Heater 31. When the water supply V and the solenoid valve 2 are energized, the drive motor 36 rotates.

The drum 4 rotates at about 4Q rpm, the circulation fan 20 also rotates, and at the same time, the water supply solenoid valve 32 opens and starts spraying and distributing the cooling water B into the condensing section 23.

The laundry A in the drum 4 is stirred by the lifter 5a. Air blown from the discharge side of the fan casing 12 of the circulation fan 20 passes through the condensing section 23 and is heated by the heater 31 to become hot air (relative humidity is generally 2% or less).
Hot air is blown into the drum 4 from the hot air blowing port 10. Then, this hot air comes into contact with the laundry A, evaporates its water content, becomes moist air containing water, and is discharged from the drum 4 and sent to the condensing section 23, where it is pumped from the water injection pump 24. It is cooled by contact with the injected cooling water B, and the moisture in the humid air is condensed and dehumidified.

This dehumidified air is heated again by the heater 31 and blown to the drum 4.

The laundry A is dried by the above-mentioned circulation of moist air, while a part of the water condensed in this process is circulated in the condensing section 23 by the water injection pump 24 together with the cooling water C, and the rest is kept as the cooling water C. At the same time, the water is drained from the drain pipe 28 through the drain hose 35 to the outside of the machine.

According to the embodiment described above, the cooling water supplied to the humid air discharged from the drum 4 through the water supply solenoid valve 32 and the cooling water C in the cooling water storage section 27 pumped by the water injection pump 24. Since the humid air is cooled by mixing, spraying and spraying with the water injection pump 24, the amount of cooling water is large compared to the amount of water supplied, and the amount of heat transferred from the humid air to the cooling water is reduced. Therefore, the amount of cooling water supplied through the water supply solenoid valve 32 can be saved.

Other embodiments will be described below.

FIG. 4 is a sectional view showing a condensing section of a clothes dryer according to a second embodiment of the present invention.

In this embodiment, the opening of the drain pipe in the condensing section has a siphon structure, and the other structures are as follows.

This embodiment is exactly the same as the embodiment shown in FIG.

In FIG. 4, the same parts as in FIG. 1 are denoted by the same numbers. Reference numeral 43 denotes a siphon for draining the cooling water C, condensation, and supply water, which is disposed at the bottom of the cooling water storage section 27 of the condensing section 23. The drain pipe 28 is formed so that it is located above the water intake port 29, and the drain pipe 2
8 and between the bottom surface of the cooling water storage section 27 and the lower end surface 45a.

They were arranged with a gap d. It consists of an upside-down, top-shaped cylindrical body 45 having an upper base portion 45b.

With this configuration, the cooling water C in the cooling water storage section 27 is drained intermittently. That is, the water level of the cooling water C rises and starts when it exceeds the opening 28a of the drain pipe 28, and then the water level falls and the lower end surface 45a of the cylinder body 45.
It stops.

In addition, the amount of cooling water B injected and sprayed into the humid air from the water injection pump 24 is only the amount of water supplied through the water supply solenoid valve 32 while the water level of the cooling water C is lower than the water intake port 29. When the water level of the cooling water C becomes higher than the water intake port 29, the water amount becomes the sum of the above-mentioned water amount and a part of the cooling water C pumped by the water injection pump 24.

According to this second embodiment, the opening 28a and the condensing section 23
Since the cooling water C is always present between the drain pipe 28 and the drain pipe 28, there is an advantage that leakage of humid air from the drain pipe 28 can be completely eliminated.

FIG. 5 is a sectional view showing a condensing section of a clothes dryer according to a third embodiment of the present invention.

This embodiment uses a nozzle, which will be described later, in place of the water injection pump of the embodiment shown in FIG. It's the same.

In FIG. 5, parts given the same numbers as in FIG. 1 are the same parts. Reference numeral 46 denotes a nozzle disposed on the bottom surface of the cooling water storage portion 27 with a spout 46a facing upward and its height being lower than the height of the opening 28a of the drain pipe 28.

From this nozzle 46, cooling water (tap water) is spouted through the water supply solenoid valve 32 and the water injection hose 34,
The jet stream disturbs the cooling water C and also partially disturbs the cooling water C in the condensing section 2.
It can be dispersed into three areas.

With this structure, the humid air passing through the condensing section 23 is scattered by the jet from the nozzle 46 and the water contained therein is condensed.

According to this third embodiment, humid air is transferred to the water supply solenoid valve 3.
2 and a part of the cooling water C scattered by the jet of the nozzle 46 is used for cooling. This has the advantage that the amount of cooling water to be supplied can be reduced.

A specific example will be shown.

In the clothes dryer shown in FIG. 1, the amount of cooling water supplied through the water supply solenoid valve 32 is 0.312/m1n (water temperature
℃), the power consumption of the heater 31 is 1 kW, the air flow rate of the condensing section 23 is l, and Om3/min.

According to the measurement results when the material to be dried was 2.0 kg of cotton cloth with a moisture content of 75%, compared to the case where the water injection pump 24 was not installed and the above amount of cooling water was simply supplied to the condensing section 23. , the temperature difference between the humid air before and after cooling is 2.
This had the effect of increasing the amount of water condensed by drying path γ (water ff1 collected and measured) by 1.4 times.

[Effects of the Invention] As described above in detail, the present invention has the following effects.

■We cooled humid air with water and condensed the moisture contained in it to remove it, making it 4 times better than before! i. The airframe can be made smaller without requiring a heat exchanger for condensing moisture, a cooling fan, or a space to house them, and the structure of the humid air condensing section can be simplified, and the cost can be reduced. reduce

@, As in the conventional technology, cooling of humid air is done by drawing in outside air.
Since no exhaust is required, installation is limited to a certain location.

There is no need to limit the installation to a location where air intake and exhaust are easy, or increase the temperature inside the room where it is installed.

■ Moist air is mixed with the tap water supplied through the water supply solenoid valve and the cooling water in the cooling water storage unit, which still has cooling capacity by just spraying and spraying, using a water injection pump or nozzle. Since cooling is performed by spraying and scattering, cooling water can be used effectively, and the amount of tap water to be supplied can be reduced.

(2) Furthermore, if the opening of the drain pipe in the condensing section has a siphon structure, leakage of moist air from the drain pipe to the outside of the machine can be completely prevented.

In short, it is possible to provide a clothes dryer that is compact, easy to install, and does not cause discomfort to residents.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing a clothes dryer according to a first embodiment of the present invention, FIG. FIGS. 4-5 are cross-sectional views showing the details of the water injection pump in the figure, and FIGS. 4-5 are cross-sectional views showing the condensing section of the clothes dryer according to the second and third embodiments of the present invention, respectively. 4... Drum, 8d... Duct part, 12... Fan casing, 20... Circulation fan, 23... Condensing part, 24... Water injection pump, 25... First duct , 26... second duct, 28... drain pipe, 29...
... Water intake port, 30 ... Lifting pipe, 31 ... Heater, 3
Double-mounted water supply solenoid valve, 45...cylindrical body, 46...nozzle.

Claims (1)

[Claims] 1. A drum serving as a drying container is horizontally supported in the machine body, and humid air containing moisture evaporated from the laundry stored in the drum is discharged from the drum by a circulation fan. The tap water is then sent to the condensing section, and the tap water supplied from the water supply solenoid valve to the condensing section is
The laundry is cooled by cooling the humid air to condense and remove the moisture contained therein, passing the dehumidified air through a heater to heat it, and blowing it into the drum for circulation. In a clothes dryer configured to dry clothes, the condensing section has one end connected to a discharge side of a fan casing of a circulation fan, and the other end connected to a first duct disposed toward the bottom of the machine body; a second duct connected to the other end of the first duct and the other end connected to a duct portion housing a heater; and a cooling water formed at the bottom of the second duct and capable of storing water. a storage section; a drain pipe rising from the bottom of the cooling water storage section; a water inlet opening at the lower side of the cooling water storage section; a water injection pump attached to the upper side of the cooling water storage section; The water injection pump has a water pump that connects the water injection pump and the water intake port, and the water injection pump includes a nozzle portion connected to a water supply solenoid valve, and a water pump provided in front of the nozzle portion and connected to the second duct. A clothes dryer comprising: a water ejection port for spouting water inward; a water ejection port to which the water ejection pipe is connected; and a water ejection portion formed to surround the nozzle portion. Machine. 2. The clothes dryer according to claim 1, wherein an inverted cup-shaped cylindrical body is disposed in the cooling water storage portion so as to cover a rising portion of the drain pipe. 3. A drum serving as a drying container is horizontally supported within the machine, and humid air containing moisture evaporated from the laundry stored in the drum is discharged from the drum and sent to a condensing section by a circulation fan. By the tap water supplied from the water supply solenoid valve to the condensing section,
The laundry is cooled by cooling the humid air to condense and remove the moisture contained therein, passing the dehumidified air through a heater to heat it, and blowing it into the drum for circulation. In a clothes dryer configured to dry clothes, the condensing section has one end connected to a discharge side of a fan casing of a circulation fan, and the other end connected to a first duct disposed toward the bottom of the machine body; a second duct connected to the other end of the first duct and the other end connected to a duct portion housing a heater; and a cooling water formed at the bottom of the second duct and capable of storing water. It has a storage part, a drain pipe that stands up from the bottom of the cooling water storage part, and a nozzle that is attached to the bottom of the cooling water storage part so that the spout faces upward, and the nozzle is used for water supply. A clothes dryer characterized in that it is connected to a solenoid valve. 4. The clothes dryer according to claim 3, wherein an inverted cup-shaped cylindrical body is disposed in the cooling water storage portion so as to cover the rising portion of the drain pipe.