JPH01113096A - Dryer - Google Patents

Abstract

PURPOSE: To make a drier improved in heat exchange efficiency, thin in thickness and compact in structure by attaching a rotary cylinder having a chamber for housing matters be dried to a heat exchange to which a combustor is attached, and spirally forming an air passage for combustion gas and hot air in the heat exchange. CONSTITUTION: A blower 4 and a combustion blower 40 are driven and a rotor 6 is rotated to rotate matters to be dried. Air for combustion from the blower 40 is blown into the combustor 2 to be combustion gas and sent to the heat exchange through a passage 14. Next, the gas flows outward in a radial direction through a spiral heat transmitting passage 15 and the heat energy of the combustion gas is transmitted to an air passage for hot air 15 to be exhausted from an exhaust pipe 24. Air for hot wind is sent to the spiral passage 20 from an air sending out passage 37 by the blower 4, passes inward in the radial direction to be warmed, and sent out to the chamber 7 for housing matters to be dried through a hot air blow-off port 34. Hot air blown out to the chamber 7 passes through a ventilation hole 38 while drying the matter to be dried and exhausted from a hot air exhausting port 31. Thus, heat exchanging efficiency is improved to speedily generate hot air, thereby speedily drying the matter to be dried.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dryer comprising a combustor, a heat exchanger, etc.

[Conventional technology]

Conventionally, regarding clothes dryers, for example,
This method is disclosed in Japanese Patent No. 6077 and the like. The clothes dryer is
A rotating body having a clothing storage chamber is provided in the upper part of the body, a sealed or semi-closed combustor is provided in the lower part of the body, and hot air generated by the 1g combustor is circulated through the clothes storage chamber of the rotating body. The container is configured to be discharged outside the container.

[Problem that the invention seeks to solve]

However, in the above-mentioned clothes dryer, the rotating body with the clothes storage chamber and the combustor are installed independently within the body, which takes up a large amount of space and tends to make the dryer itself extremely large. There is a problem. Additionally, the combustor and heat exchanger used in the clothes dryer cannot achieve sufficient heat exchange efficiency, and furthermore, due to the structure of the clothes dryer, hot air cannot be utilized to the fullest. There is.

The purpose of this invention is to solve the above problems, and consists of a vaporization type combustor and a heat exchanger, and uses a rapid ignition system and a rapid vaporization system to quickly vaporize liquid fuel into vaporized fuel and ignite combustion. The heat exchange area of the heat exchanger is enlarged to improve heat exchange efficiency, rapidly generate hot air, and effectively send the hot air into the drying material storage chamber to quickly dry the drying material. To provide a dryer in which the structure of the dryer itself is extremely thin and compact.

[Means for solving problems]

In order to solve the above problems and achieve the above objects, the present invention is configured as follows.

That is, the present invention rotatably attaches a rotating cylindrical body having a drying material storage chamber to a hot air blowing cylindrical body of a heat exchanger disposed inside an airframe and equipped with a combustor, and furthermore, the heat exchanger Regarding a dryer characterized in that a combustion gas passage and a hot air air passage are formed in a spiral shape, more specifically, a partition that partitions the combustion gas passage and the hot air air passage. The present invention relates to a dryer characterized in that fins provided on the wall are arranged along the flow direction of the spiral passage.

[Effect]

The dryer according to the present invention is constructed as described above and operates as follows. That is, in this dryer, the combustion gas passage through which the combustion gas generated in the combustor flows and the hot air air passage through which hot air passes are formed in a spiral passage. It can flow smoothly and reduce noise, and although the diameter of the spiral passage is large in the radial direction, the heat exchanger can be configured to be short in the longitudinal direction, and the structure of the dryer itself can be extremely simple, thin, and compact. Moreover, it is possible to form a large heat exchange area, improve heat exchange efficiency, rapidly generate warm air, send the hot air into the drying object storage chamber, and quickly dry the drying object.

〔Example〕

Hereinafter, one embodiment of a dryer according to the present invention will be described in detail with reference to the drawings. In FIG. 1, a dryer according to the invention is indicated generally by the numeral 10. This dryer 10 consists of a motor 1, a vaporization type combustor 2, a heat exchanger 3, a combustion blower 40, a warm air blower 4, a body 5, a rotary cylinder body 6, etc. In the heat exchanger 3, heat is exchanged with air to generate warm air, and the object to be dried is dried by the warm air. The dryer 10 according to the present invention is particularly characterized by the mounting structure for attaching the rapidly heating hot air generator comprising the combustor 2 and the heat exchanger 3 to the airframe 5, the shape and rotation of the combustion gas passage and the hot air air passage. It is characterized by the mounting structure of the cylinder 6, etc.

Regarding this drying R10, a rotary cylinder body 6 having a drying material storage chamber 7 is rotatably provided in a cylindrical body 5, and a vaporizing type combustor 2 is attached to a heat exchanger 3 through a combustion cylinder 8. A disk body 36 forming the outer wall of the heat exchanger 3 is fitted and disposed within the body 5. In addition, a warm air blowing cylinder 11 is formed in the center of the disc body 36, and is provided with a large number of hot air blowing ports 34 that protrude toward the dried material storage chamber 7 side. The rotary cylinder 6 is connected to the rotor 3 of the motor 1 on the outer periphery of the hot air blowing cylinder 11.
The body 5, which is rotatably attached via a housing 5, has a hot air outlet 31 at its upper part, and an opening/closing opening 1 at one end thereof, which can be opened and closed in order to input or take out materials to be dried into or from a storage chamber 7.
A heat exchanger 3 is disposed at the other end of the fuselage 5 having a circular plate 33, and the back plate of the fuselage 5 and one outer wall of the heat exchanger 3 are shared by a disc body 36. There is. A disk body 23 constituting the other outer wall of the heat exchanger 3 is fixed to the fuselage 5, and a combustion blower 40 for feeding combustion air to the combustor 2 is installed at the bottom of the disk body 23. A hot air blower 4 for feeding hot air to the heat exchanger 3 is also installed on the top.

Regarding the mounting structure of the combustor 2 and heat exchanger 3,
In the figure, the combustion cylinder 8 of the combustor 2 is connected to the disk body 23 of the heat exchanger 3.
It is installed in the center of the The air delivery passage 37 from the warm air blower 4 is an air passage that sends warm air to the heat exchanger 3;
It communicates with the outer periphery of a heat exchange passage, ie, a hot air air passage 20, which is a spiral passage described later. Furthermore, the disk body 39 of the rotary cylinder body 6 having the drying material storage chamber 7 is connected to the heat exchanger 3.
The rotor 35 of the motor 1 is rotatably attached to the outer periphery of the hot air blowing cylinder 11 . Further, the rotary cylinder body 6 is a cage provided with a large number of ventilation holes 38. This drying [
The hot air blower 4 in 10 is composed of a centrifugal blower or the like,
Air taken in through an air cleaner or the like, air directly taken in from outside or indoors, etc. is sucked in through the suction port 12 and sent to the hot air air passage 20 of the heat exchanger 3. Further, the combustion gas generated in the combustor 2 is fluidly sent to a heat transfer passage, that is, a combustion gas passage 15, which is a spiral passage described later in the heat exchanger 3 installed downstream, to exchange heat with hot air. hand,
The heated air, that is, hot air, is used to dry the material to be dried. The air heated by exchanging heat with the combustion gas in the heat exchanger 3, that is, the warm air, is sent to the hot air blowing cylinder 1 of the heat exchanger 3.
The warm air is sent out from the first hot air outlet 34 to the drying object storage chamber 7 inside the rotary cylinder body 6 . In the figure, 45 indicates the stator of the motor 1.

An example of the combustor 2 applied to the dryer 10 according to the present invention will be described. The combustor 2 is a vaporization type combustor that operates using a battery or a household or commercial power source as a power source, and liquid fuel is introduced into a vaporizer 25 by a fuel supply device 9. This is a vaporization type combustor that vaporizes fuel to produce vaporized fuel, and ignites and burns the vaporized fuel within a ceramic cylinder 16. The inside of the cylinder 16 is divided into a vaporization chamber 18 by a partition [19] with a communication hole.
and a combustion chamber 17. Further, a part of a carburetor 25 having a built-in glow plug for vaporization is disposed diagonally through the combustion chamber 17 . In order to energize the vaporizing glow plug of the vaporizer 25, its terminal 32 is connected to a battery or a household or commercial power source. Further, liquid fuel is supplied to the vaporizer 25 from a fuel supply device 9 consisting of a fuel pump and a fuel tank through a fuel supply pipe 26. The vaporized fuel generated in the vaporizer 25 is ejected from the ejection port 27 of the vaporizer 25 into the vaporization chamber 18 . Further, an ignition glow plug is installed in the vaporization chamber 18 to ignite the fuel. Note that the vaporizing glow plug and the ignition glow plug are, for example, plugs in which a resistance wire is embedded in a ceramic material such as silicon nitride, and are heated to red by electric energy. These glow plugs can carry large currents to achieve rapid vaporization, ignition, and combustion of liquid fuel.

Combustion air is supplied to the combustor 2 from a turbo-type combustion blower 40.
The combustion air is taken in through the combustion air intake pipe 28, and then blown into the combustion chamber 17 of the cylinder IG through the annular passage 29 formed by the outer cylinder 30 and the cylinder 16 through a number of air introduction holes formed in the cylinder 16. Furthermore, a part of the combustion air is blown into the vaporization chamber 18 through the communication hole formed in the partition plate 19,
It mixes with vaporized fuel to form an air-fuel mixture, and ignites the oil droplets or air-fuel mixture with an ignition glow plug.
The air-fuel mixture is combusted in the combustion chamber 17. The combustion chamber 17 communicates with the combustion tube 8 through the outlet of the cylindrical body 16, and the air-fuel mixture is combusted in the combustion chamber 17, and the flame extends to the combustion tube 8 and is further completely combusted. In addition, when the combustion state in the combustor 2 becomes active, the vaporizer 25 begins to obtain vaporization heat through the fins formed on its outer surface, so even if the vaporization glow plug is turned off, the vaporization heat is not introduced into the vaporizer 25. The liquid fuel can be quickly vaporized to produce vaporized fuel.

Incidentally, the combustion blower 40 needs to generate air blowing pressure sufficient to overcome the expansion of air due to combustion in the combustor 2, but if the air volume is too large in the early stage of combustion in the combustor 2, the flame may not blow out. Therefore, when the combustor 2 is ignited, it is preferable to control the blower drive motor so that the air volume of the combustion blower 40 is reduced at the beginning of combustion, that is, to a small air volume, and then increased thereafter.

Further, an example of the heat exchanger 3 applied to the dryer 10 according to the present invention will be explained. The outer cylinder 41 of the heat exchanger 3 is integrally formed with an extension of the cylindrical body 5. A disk body 23 having a central hole 42 connected to the combustion tube 8 of the combustor 2 is fixed to one end of the outer tube 41, and a hot air blowing tube is provided at the center of the other end of the outer tube 41. A disc body 36 formed from the body 11 in a protruding state is fixed. Outer cylinder 41, disk body 2
A partition wall 13 is fixed to the center of the cylinder formed by the cylinder body 3 and the disc body 36, and the partition wall 13 defines a heat transfer section through which combustion gas flows and a heat exchange section through which hot air flows inside the cylinder. It is divided into

A spiral passage wall 44 is fixed to this heat transfer section;
A heat transfer passage or combustion gas passage 15, which is a spiral passage, is formed in the heat transfer section.

The combustion gas passage 15 is provided with fins 22 along the spiral passage wall 44 . Further, a spiral passage wall 43 is fixed to the heat exchange section, forming a heat exchange passage which is a spiral passage, that is, a hot air air passage 20, in the heat exchange section.

The hot air air passage 20 is provided with fins 21 along the spiral passage wall 43. As an example of manufacturing these spiral passages, the fins 21 and 22, the spiral passage walls 43 and 44, and the partition wall 13 can be manufactured by integrally casting metal such as aluminum. However,
The fins 21, 22 and the spiral passage walls 43, 44 are
It is preferable to configure the partition wall 13 integrally from the viewpoint of heat transfer. Although the drawing shows an example in which the combustion gas passage 15 is provided with fins 22, it is not necessarily necessary to provide the fins. Of course not. Moreover, the fins provided in the spiral passage do not necessarily have a continuous shape, but may have separate short shapes, and it goes without saying that they may be provided in several zigzag shapes instead of in one row.

As for the combustion gas passage 15, as indicated by the symbol B, the combustion gas from the combustion tube 8 connected to the central part flows outward in the radial direction from the center of the combustion gas passage 15 to the spiral passage wall 44. and is exhausted to the outside from the exhaust pipe 24. As for the '4L air passage 20, as indicated by the symbol A, the hot air from the air delivery passage 37 connected to the outer periphery is sent from the outer periphery of the hot air air passage 20 to the spiral passage wall 43. The hot air blowing cylinder 11 is formed in the center of the hot air air passage 20 and flows radially inward along the hot air passage 20.
Then, the hot air is blown out from the hot air outlet 34 into the dried material storage chamber 7 inside the rotor 6 . In addition, the combustion gas flow passage, that is, the combustion gas passage 15, and the hot air air passage 20, through which the heated and drying air flows, are completely shut off, so that no combustion gas is mixed into the hot air. The system is constructed in such a way that it is highly desirable in terms of safety.

The dryer 10 according to the present invention is constructed as described above and operates as follows. The dryer 10 operates using a battery or a household or commercial power source as a power source. First, the opening/closing lid 33 of the body 5 is opened to dry clothes, plants, marine products, grains, powder, etc. The object to be dried is stored in the object storage chamber 7, and the opening/closing lid 33 is closed. Then,
The hot air blower 4 and the combustion blower 40 are driven, and the motor 1 is also driven to rotate the rotor 6, thereby rotating the dried material stored in the dried material storage chamber 7. Further, the fuel pump of the fuel supply device 9 is operated, and the vaporizing glow plug and the ignition glow plug of the combustor 2 are made to function.

The motor 1 and the motors of the combustion blower 40 and the hot air blower 4 may be configured with, for example, DC motors and the duty may be controlled depending on the combustion state of the combustor 2 and the type of material to be dried.
This is preferable since it allows seven-point control. Liquid fuel is sent to the vaporizer 25 of the combustor 2 by driving the fuel pump of the fuel supply device 9, and current is applied to a vaporizing glow plug built in the vaporizer 25 to vaporize the liquid fuel. vaporizer 2
The vaporized fuel vaporized in step 5 is burned! It is ejected into the vaporization chamber 18 of 52. Further, the combustion air sent from the combustion blower 40 is blown into the combustor 2 from the air intake pipe 28,
Next, the combustion air is introduced into the combustion chamber 17 through the annular passage 29 through the air introduction holes provided in the cylinder 16, and a part of the combustion air is introduced into the vaporization chamber 18 through the communication holes in the partition plate 19, where the vaporized fuel is The fuel is mixed with the fuel to form an air-fuel mixture, which is ignited by an ignition glow plug that is energized. In this case, the combustion air sent out from the blower 4 not only has a blowing pressure that overcomes the expansion of the air due to combustion in the combustor 2, but also has a small air volume at the beginning of air sending out. , and thereafter the air volume is controlled to increase.

Therefore, the air-fuel mixture in the combustor 2 can be ignited very smoothly, and then combustion can be active. Moreover, the combustion gas generated in the combustor 2 is sent from the combustion tube 8 to the heat exchanger 3 without flowing backward due to the function of the combustion blower 40, and the warm air is sent to the heat exchanger 3 by the hot air blower 4. heat is exchanged with the air used. The heat-exchanged warm air is sent to the drying object storage chamber 7 where drying is to be performed. For more information,
The air taken in through the suction port 12 of the hot air blower 4 is, for example, air taken in through an air cleaner or the like, or directly taken in from outside air or from inside a room, etc., and is introduced into the suction port 12 through an air intake duct or the like. Ru. The combustion gas generated by the combustor 2 is transferred to the cylindrical body 1.
6 to the heat exchanger 3 through the passage 14 in the combustion tube 8.
The combustion gases then flow radially outwardly through the heat transfer passage or combustion gas passage 15, which is a spiral passage formed by the spiral passage wall 44, and the thermal energy of the combustion gas is transferred to this passage. Combustion gas passage 15
Heat is absorbed through the spiral passage wall 44 and the partition wall 13, and is conducted to the heat exchange passage, ie, the hot air air passage 20, by conduction and radiation. Finally, the combustion gas is exhausted to the outside of the heat exchanger 3 through the exhaust pipe 24 from the combustion gas outlet formed in the outer l#41 of the heat exchanger 3. On the other hand, hot air air is sucked in from the suction port 12 by the function of the heating blower 4 and sent into the hot air air passage 20 of the heat exchanger 3 through the air delivery passage 37. It passes radially inward between the spiral passage wall 43 and the fins 21 disposed along the spiral passage wall 43, effectively exchanging heat with the combustion gas and rapidly warming it, and then blowing out hot air. A to-be-dried material storage chamber 7 in which the to-be-dried material is accommodated through the hot air outlet 34 from the cylindrical body 11
sent to. The hot air blown into the drying material storage chamber 7 passes through a large number of ventilation holes 38 formed in the rotor 6 while drying the material to be dried, and then passes through a hot air outlet 3 formed in the body 5.
1 to the outside of the dryer IO.

〔Effect of the invention〕

The dryer according to the present invention is configured as described above and has the following effects. That is, in this dryer, the combustion gas passage of the heat exchanger through which the combustion gas generated in the combustor flows and the hot air air passage through which hot air passes are formed in a spiral shape, so that the combustion gas and the hot air are Noise can be reduced by flowing smoothly through the spiral passage, and although the diameter of the heat exchanger in the radial direction is large due to the spiral passage, the heat exchanger can be configured to be short in the longitudinal direction, and therefore, the dryer The structure of the dryer itself can be extremely simple, thin and compact, the dryer itself can be compact, and depending on the case, it can be constructed as a portable type, and furthermore, it can be constructed at extremely low cost. Furthermore, the heat exchange area of the heat exchanger can be made large, improving the heat exchange efficiency between the combustion gas of the combustor and the hot air of the heat exchanger, rapidly generating hot air, and increasing the temperature. By sending wind into the drying object storage chamber, the drying object can be quickly dried.

Further, the structure is such that the combustor and the heat exchanger can be easily configured to be removable from the aircraft body, and cleaning and
Inspections, repairs, etc. can be performed extremely easily. Furthermore,
The hot air generating device quickly converts liquid fuel into vaporized fuel using a rapid ignition system and a rapid vaporization system, which are obtained by applying a large current to the vaporization glow plug and ignition glow plug in the vaporization type combustor. It vaporizes, ignites and burns it, and efficiently and quickly exchanges heat from the combustion heat to generate a large amount of hot air, and delivers clean hot air that is not mixed with exhaust gas into the drying material storage room. Therefore, a large amount of warm air can be sent into the drying object storage chamber, and rapid drying of the drying object can be achieved, without changing the quality of the drying object.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of a dryer according to the present invention, and FIG. 2 is a cross-sectional view taken along line 1--H in FIG. 1, showing a combustion gas passage formed by a spiral passage wall. ■...-Motor, 2--Combustor, 3-Oil exchanger, 4--Hot air blower, 5--Airframe,
6-m---・Rotating cylinder body, 7-・・・・Dried material storage chamber, 9-・・・・Fuel supply device, 10・・・・・Dryer, 13----・-・Partition wall, 15--・Combustion gas passage, 20...--Hot air air passage, 21,
22--...Fin, 23, 36--Disc body, 25---Vaporizer, 31---Hot air outlet, 33--...Opening/closing lid, 34-- ....-Hot air outlet, 35.--Rotor, 40 songs--Combustion blower, 43. 44- Spiral passage wall. Figure 1 10 Figure 2

Claims (2)

[Claims] (1) A rotary cylinder body having a drying material storage chamber is rotatably attached to a hot air blowing cylinder body of a heat exchanger disposed inside the machine and a combustor is attached, and the combustion gas inside the heat exchanger is A dryer characterized in that a passage and a hot air passage are formed into a spiral passage. (2) According to claim 1, wherein fins provided on a partition wall that partitions the combustion gas passage and the hot air air passage are arranged along the flow direction of the spiral passage. dryer.