JPS58195596A - Garment dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clothes dryer using a heat exchanger.

Generally drying clothes 4! l! The drying process is progressed by supplying heated air into the drying chamber to vaporize and remove the moisture contained in the dried material, and the high-temperature air containing the vaporized moisture is discharged to the outside of the dryer. However, discharging humid air into a room causes discomfort, such as the room becoming hot and humid and causing electricity to build up on the walls.In addition, discharging high-temperature air is a waste of energy. In order to solve the above problem, a heat exchanger is installed in the exhaust air passage to condense the moisture, and the air from which all moisture has been removed is reheated and supplied to the drying chamber using a circulation type dryer. Alternatively, exhaust heat regeneration is used to improve thermal efficiency by exchanging heat between exhaust air and intake air from outside through a heat exchanger in the exhaust air path, and supplying the warmed intake air into the drying chamber. There is a dryer for dryers.

Figures 1 and 2 show the heat exchanger used in the dryer VC. In the figure, 1 is a pie that serves as an exhaust passage!
, 2 is a great fin connected to the outer peripheral surface of the fin 2, and the pi f1 is inserted into an insertion hole 2a extruded into the fin 2. 3 is a mounting plate that also serves to reinforce the entire heat exchanger. The pipes 1 and fins 2 having the V2 structure as described above are made of copper or aluminum, and since they are a combination of many pipes and fins, the materials and processing work requires a lot of time. This heat exchanger was extremely expensive.

Furthermore, inserting the insertion holes 2a of the fins 2 into the piping increases the thermal resistance due to conduction in the thick portion, and the contact thermal resistance between the piping and the fins 2 increases. Therefore, in order to ensure the amount of heat exchange, it is necessary to increase the overall volume of the heat exchanger, which is a factor in high cost.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above. Cylindrical holes are formed in the great fin by punching, and the cylindrical holes are overlapped to form an air passage that is continuous in the shape of a rib. The purpose of this invention is to provide a clothes dryer that does not require the use of conventional pipes, is inexpensive, and is equipped with a heat exchanger with high heat conduction efficiency.

An embodiment of the present invention will be described below with reference to the drawings.

2'. Figure 3 shows the overall view of the clothes dryer.
l(':':': 4 is the main body of the dryer, 5 is a book, the drying chamber is rotatably supported in the body 4 and consists of a drum for storing the material to be dried;
Reference numeral 6 denotes an entrance/exit for the material to be dried provided on the front side of the dryer body 4, and 7 is a door for opening/closing this entrance/exit 6. Hot air is sent into the drying chamber 5 from the heating air path 9 to remove moisture from the material to be dried. A fan 12 is a heat exchanger installed in the exhaust air passage 1, which discharges humid air to the exhaust air passage 11, and is composed of plate fins 13 and an exhaust air passage 14, and the fin 13 is connected to a cooling fan (not shown). )) By cooling with K, the air passage 14 is
The moisture is condensed and separated from the hot and humid exhaust gas inside the ventilation passage 14.
The water droplets that have formed on the inner wall are discharged from the drain port 15 (7
The air from which moisture has been removed is sent to the heating air path 9, reheated by the heating element 8, and then combined into the drying chamber 5.

Next, the structure of the heat exchanger 12 will be explained in detail with reference to FIGS. 4 and 5. The great fin 13 has a plurality of nine cylindrical holes 13a formed by punching, etc.
When a number of cylindrical holes 13a, .
)-c r at m. 14 e411ff-1'-,
6j,! :d; 'I can. Thus each fin 1
3 is clamped by a mounting plate 16 and tightened with a 1.1 threaded rod 17 and a nut 18.

In the heat exchanger 12 configured in this way, when humid air is sent into the ventilation path 14 from the exhaust air path 11, the heat exchanger 12
4. A cylindrical hole 13a assembling 4.

The unevenness of the joints of... causes air turbulence and improves heat transfer to the inner wall of the air passage. Further, by integrating the cylindrical hole t3a and the fins 13, there is no contact thermal resistance between the fins and the pipe, which is said to account for about 10 - of the total thermal resistance that lowers the heat transfer rate of conventional heat exchangers.

In addition, in the embodiment of this invention, the rotating drum type dryer:
), but it may also be a set of lockers.

As described above, according to the present invention, a heat exchanger used in a clothes dryer is made by overlapping great fins with cylindrical holes formed by a trap such as a punching process, thereby creating an air passageway in which the cylindrical holes are connected like a pipe. The heat exchange capacity has increased, and the pipes that accounted for about 60% of the cost of conventional heat exchangers are no longer required, making assembly easy, extremely inexpensive, and compact. Since a heat exchanger with a reduced size can be obtained, the external dimensions of the dryer can also be reduced. In addition, the heat exchanger according to the present invention can effectively condense and separate moisture from exhaust air, thereby eliminating negative effects such as condensation on indoor walls, shortening drying time, and improving drying efficiency. effective.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a conventional heat exchanger in a clothes dryer, Fig. 2 is an exploded perspective view of the same, Fig. 3 is a sectional view of a clothes dryer using a heat exchanger according to the present invention, and Fig. 4. 5 is a side sectional view of the heat exchanger, and FIG. 5 is an exploded perspective view. 5... Drying room, 9... Heating air path, 11... Exhaust air path, 12... Heat exchanger, 13... Great fin,
13a...Cylindrical hole, 14...Air passage, 16...Mounting plate, 17-°. Threaded rod, 18... nuts. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. 1 tithe X Nobuo - Figure 1 Figure 2 Figure 2 Figure 3

Claims (1)

[Claims] The dryer has a heating air path that supplies heated air from a heating element to a drying chamber in the dryer main body, and an exhaust air path that exhausts humid air from the drying chamber, and a heat exchanger is disposed in the exhaust air path. In clothes dryers, the heat exchanger is made of plate fins with cylindrical holes formed by punching, etc., and the exhaust ventilation path is formed by stacking a plurality of these plate fins so that each cylindrical hole is connected in a row. Clothes dryer with percentage image