JP3987496B2 - Heat exchanger and deodorizing sterilizer - Google Patents

Description

  The present invention relates to a heat exchanger and a deodorizing and sterilizing apparatus. More specifically, the present invention relates to a heat exchanger that favorably transfers heat between fluids such as air, and a deodorizing and sterilizing apparatus that can favorably deodorize and sterilize indoor air using the heat exchanger.

  Air conditioning equipment such as an air conditioner is widely used as a cooling / heating device in various environments such as a car interior, a hospital, a factory, a school, an office, and a general household. In such an environment where people live, various external factors such as odor, mold, dust, bacteria, virus, tobacco smoke, and pollen are involved in addition to mere temperature and humidity. For this reason, in addition to air conditioning equipment such as air conditioners, various devices that improve the environment, such as ventilation devices and deodorizing sterilization devices, are used.

  In the ventilator, the room air adjusted to a predetermined temperature is discharged to the outside of the room, and the thermal energy consumed for temperature adjustment is likely to be wasted. Therefore, energy may be saved by purifying the indoor air by circulating it with an air purifier or the like and reducing the ventilation amount of the indoor air. Furthermore, it is conceivable to save energy by exchanging heat between the air discharged outside the room and the air introduced into the room using a heat exchanger.

In order to improve the performance of the heat exchanger, it is conceivable to use a material having high thermal conductivity. On the other hand, fine materials such as carbon nanotubes have extremely high thermal conductivity, and a functional coating agent using this as a composition has been proposed (see Patent Document 1).
However, the development related to the specific application of the functional coating agent containing the carbon nanotubes to a heat exchanger or the like is considered to be a future problem.
JP 2000-26760 A (first page)

In addition, a deodorizing and sterilizing apparatus has been proposed that deodorizes and sterilizes easily and reliably while circulating indoor air by a heating effect and a catalytic effect (see Patent Document 2). In this deodorizing and sterilizing apparatus, heat exchange is performed between the processing air (purified air) discharged outside the apparatus and the air introduced into the apparatus. Thereby, the heat quantity for heating air can be reduced and energy saving can be aimed at. Moreover, the thermal influence with respect to indoor air can be suppressed as much as possible.
International Publication No. WO03 / 051405 (pages 13-15, FIG. 25)

  The problem to be solved with respect to the heat exchanger is that the heat exchanger becomes large in order to obtain a predetermined heat exchange performance without degrading the performance such as the ventilation resistance. Accordingly, an object of the present invention is to provide a heat exchanger capable of reducing the size of the heat exchanger or realizing heat exchange with a large amount of heat by improving the efficiency of heat exchange.

  Further, the problem to be solved regarding the deodorizing and sterilizing apparatus is that the heat exchanger becomes large in order to obtain a predetermined heat exchange performance, and as a result, the deodorizing and sterilizing apparatus cannot be reduced in size. For this reason, there exists a problem that a small-sized deodorizing sterilizer cannot be manufactured, such as what can be installed for the interior of a car (for in-vehicle use). Accordingly, an object of the present invention is to provide a deodorizing and sterilizing apparatus that can suitably downsize the deodorizing and sterilizing apparatus or increase the amount of processing air.

The present invention has the following configuration in order to achieve the above object.
According to one aspect of the heat exchanger according to the present invention, a cylindrical body part is provided, heat exchange fins are provided outside and inside the cylindrical body part, and the inside of the cylindrical body part A heat exchanger formed of a metal material to exchange heat between the gas passing through and the outside, wherein the fin for heat exchange is formed of a metal plate-like body, arranged at a predetermined position by being fixed plugged into a slit provided in the cylindrical body portion, between said slit by the coating material is coated the metal plate body is hermetically said coating material Contains a crystalline carbon material such as a carbon nanotube, and is coated on at least a part of the surface of the metal material .

Further, according to one embodiment of the heat exchanger according to the present invention, a coating material containing a crystalline carbon material such as the carbon nanotube is applied to at least a part of the surface of the metal material outside the cylindrical body portion. It can be characterized by.

Moreover, according to one form of the deodorizing and sterilizing apparatus concerning this invention, the air on the exhaust side heated by the ventilation means, the heating part which heats this air while air is sent by this ventilation means, and this heating part In the deodorizing and sterilizing apparatus that includes a heat exchanging part that absorbs the heat of the air and applies heat to the air on the intake side, and decomposes odorous components in the air and sterilizes bacteria and viruses in the air, the heat exchanging part However, it is provided with a cylindrical body part, heat exchange fins are provided outside and inside the cylindrical body part, and heat exchange is performed between the gas passing through the inside and outside of the cylindrical body part. The heat exchange fin is formed of a metal plate, and the metal plate is inserted into a slit provided in the cylindrical body and fixed. The slit is arranged in place and coated with a coating material The space between the metal plate-like bodies is hermetically sealed, and the air blowing means is constituted by a first air blowing fan disposed at the air intake port of the device and a second air blowing fan disposed at the air exhaust port of the device, The first blower fan and the second blower fan are arranged in the casing in the order of the heating unit, the catalyst unit, and the heat exchanger from the first blower fan side toward the second blower fan. It is characterized by being arranged in series across the internal structure.

  Moreover, according to one form of the deodorizing sterilization apparatus concerning this invention, the said heat exchanger can be the heat exchanger of Claim 1 or 2, It can be characterized by the above-mentioned.

  Moreover, according to one form of the deodorizing sterilization apparatus concerning this invention, it has the bottom part distribute | arranged to the 1st ventilation fan side so that gas may not flow directly into the said heating part from a 1st ventilation fan. In addition, the heating unit, the catalyst unit, and the heat exchanger may be provided with a bottomed cylindrical body disposed therein.

According to the heat exchanger of the present invention, the fins for heat exchange are provided by inserting the metal plate-like body into the slit of the cylindrical body portion. By applying a coating material between the slit and the metal plate-like body, gas leakage between the inside and the outside of the cylindrical body portion is prevented. Thereby, heat exchange efficiency can be improved.
Thereby, it is possible to downsize a heat exchanger related to a fluid such as air (gas), or to perform heat exchange with a larger amount of heat in a heat exchanger of a predetermined size.

Moreover, according to the deodorizing sterilization apparatus concerning this invention, the said heat exchanger with high heat exchange performance can be utilized suitably.
Thereby, a heat exchanger can be reduced in size and, as a result, size reduction of a deodorizing sterilizer can be achieved. For this reason, the small-sized deodorizing sterilization apparatus with a large processing capacity which can be installed suitably for indoor use (for in-vehicle use) of an automobile can be provided.

  Hereinafter, an example of the best mode according to the heat exchanger of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a front view showing a heat exchanger 10 of the present invention. FIG. 2 is an explanatory view showing the fin arrangement of the heat exchanger 10 in a plan view and a sectional view, and FIG. 3 is an explanatory view explaining the arrangement of fins adjacent to the fin of FIG. It is. FIG. 4 is an enlarged view illustrating a section of FIG.

  Reference numeral 12 denotes a cylindrical body, which is formed in a rectangular cylindrical shape. The cross-sectional shape is a rectangular frame. As shown in FIGS. 1 to 3, 14 a, 14 c, and 16 a are fins for heat exchange, and are provided on the outside 12 a of the cylindrical body portion 12. As shown in FIGS. 2 and 3, heat exchange fins 14 b and 16 b made of a metal material are also provided in the interior 12 b of the cylindrical body portion 12.

As shown in FIG. 4, the heat exchanger 10 is formed of a metal material 15 so as to exchange heat between a fluid such as a gas passing through the inside 12 b and the outside 12 a of the cylindrical body portion 12. Yes. A coating 18 containing a crystalline carbon material such as a carbon nanotube is formed on at least a part of the surface of the metal material 15.
In the heat exchanger 10 of this aspect, the coating 18 containing carbon nanotubes is not formed on at least a part of the surface 20a of the metal material 15 in the inside 12b of the cylindrical body portion 12. More specifically, a coating 18 containing carbon nanotubes is formed on the entire surface of the metal material 15 on the outside 12a of the cylindrical portion 12 including the heat exchange fins 14a, 14c, and 16a. On the other hand, the coating 18 containing carbon nanotubes is not formed on the entire surface of the metal material 15 in the inside 12b of the cylindrical body portion 12 including the fins 14b and 16b for heat exchange.

According to this, it is possible to absorb heat more favorably than when the coating 18 is formed in the inside 12b. And in the outer part 12a, it can thermally radiate suitably with the film 18, and heat exchange efficiency can be improved remarkably. Therefore, according to the configuration of this aspect, the heat exchange efficiency can be extremely improved in a state in which high-temperature air flows through the inside 12b and low-temperature air flows through the outside 12a.
Moreover, in the heat exchanger 10 of this aspect, the film 18 containing a carbon nanotube is only formed in the exterior 12a, and it can manufacture suitably, without making a manufacturing process difficult.

Here, the metal material 15 is not particularly limited as long as it is a material having a higher thermal conductivity than other materials such as a resin material and has a certain strength as a structural material. For example, an aluminum material, a stainless steel material, a steel material, a copper material, or the like may be selectively used as appropriate.
In addition to the generic term “carbon nanotubes”, crystalline carbon materials such as carbon nanotubes include single-walled carbon nanotubes, multi-walled carbon nanotubes, carbon nanohorns, carbon microcoils, and fullerenes. These are materials that can be produced by nanotechnology as fine materials with excellent physical properties such as extremely high thermal conductivity. At the present time, carbon nanotubes can be suitably used from the viewpoints of performance and cost.

Moreover, the coating film 18 is a coating layer formed on the surface of the material, for example, a coating film formed by applying a paint. The coating film 18 according to the present invention can be formed by dispersing carbon nanotubes in a well-known paint as appropriate and applying it to the surface of the metal material 15. Thereby, a layer made of carbon nanotubes can be uniformly formed on the surface of the metal material 15. A crystalline carbon material such as carbon nanotubes preferably acts as a functional additive for the paint forming the coating 18.
In addition, when heat resistance, chemical resistance, etc. are requested | required about the coating material, the well-known coating material which has the function corresponding to it, for example, a silicone rubber type coating material can be used. Some of these coating materials may be dried at room temperature, or may be appropriately applied with known techniques such as baking to improve the adhesion and hardness of the coating.

Further, the mixing ratio of the carbon nanotubes to the coating is considered to improve the performance as the amount of carbon nanotubes increases, but may be set as appropriate in consideration of the dispersibility and the like.
In addition, when a paint in which carbon nanotubes were mixed at a weight ratio of 10% was applied only to the surface of the outer part 12a (not applied to the surface of the inner part 12b), an extremely high heat exchange performance was obtained. did it. Specifically, it is possible to manufacture a heat exchanger having a heat exchange performance that is eight times as a value when comparing the size of the apparatus with the conventional one and the amount of heat of treatment. This is considered to be caused by the extremely high thermal conductivity of the carbon nanotubes.

As shown in FIGS. 2 and 3, the heat exchanging fins 14 a, 14 b and 14 c are formed by a first metal plate 14. On the other hand, the heat exchange fins 16 a and 16 b are formed by the second metal plate 16. The metal plate-like bodies 14 and 16 are provided at predetermined positions by being inserted into and fixed to the slits 13 provided on the side walls 12 c of the cylindrical body portion 12.
And as shown in FIG. 4, between the slit 13 and the metal plate-shaped bodies 14 and 16 is airtight by the coating material which forms the film 18. As shown in FIG. According to this, the leak between the inside 12b and the outside 12a of the cylindrical part 12 is prevented, and the heat exchange efficiency can be improved.
For the metal plate-like bodies 14 and 16, for example, a metal plate material such as an aluminum material, a stainless steel material, a steel material, or a copper material may be selectively used. Further, the cylindrical body 12 and the metal plate-like bodies 14 and 16 can be appropriately fixed with a predetermined strength obtained by a fixing means such as spot welding.

The slit 13 is formed in a through hole shape by press punching or the like. The slit 13 is formed with a predetermined clearance with respect to the thickness and width of the metal plate-like bodies 14 and 16 to such an extent that the metal plate-like bodies 14 and 16 can be fitted easily and easily.
By the way, the cross-sectional area of the inner space is small between the inside and the outside of the cylindrical body portion 12, and the flow velocity of air or the like flowing through the inside 12b of the cylindrical body portion 12 is increased. For this reason, the inside 12b of the cylinder part 12 tends to become a negative pressure by the effect of a venturi. Therefore, even if there is a small gap between the slit 13 and the metal plate-like bodies 14 and 16, air or the like is likely to leak from the outside 12a to the inside 12b. This can be suitably hermetically sealed by the coating material for forming the coating 18 as described above. In the case of air, the pressure difference between the inside and outside of the cylindrical body portion 12 is not so large, and high airtight performance is not required.

As shown in FIGS. 2 and 3, the metal plate-like bodies 14 and 16 are formed with step portions 14e and 16e as stopper shapes so as to prevent them from being inserted into a predetermined dimension or more and to fix them appropriately. ing.
Further, the first metal plate-like body 14 has a shape that penetrates the inside 12b of the cylindrical body portion 12 formed in a rectangular cross section from one outer surface side to the opposite outer surface side, and is bridged. That is, it is formed so as to penetrate the opposing side walls 12c, 12c. On the other hand, the second metal plate-like body 16 has a shape protruding into the inside 12b of the cylindrical body portion 12 to the extent that it does not interfere with the metal plate-like body 14. One sheet of the first metal plate 14 and two sheets of the second metal plate 16 constitute a set of fins, and a plurality of stages are provided.
Furthermore, in order to improve the heat exchange performance, the outer heat exchange fins 14a, 14c, and 16a are formed with slit-shaped cut portions 14f and 16f on the outer edges thereof. The same applies to the inner heat exchanging fins 14b and 16b, but each fin 14a, 14b, 14c, 16a and 16b is appropriately provided with a slit-shaped or circular-shaped through-hole in order to improve the heat exchanging performance. It may be provided.

Moreover, the metal plate-like bodies 14 and 16 are being fixed to the state inclined in the longitudinal axis direction of the cylinder part 12, as shown in FIG. This is the same in all the metal plate-like bodies 14 and 16 fixed to each side surface of the cylindrical body portion 12.
The reason for the inclination is to obtain a larger surface area within a predetermined volume and to complicate the air flow path to improve the heat exchange performance. Moreover, it is also for suppressing the raise of ventilation resistance by it and blowing efficiently.

Moreover, as shown in FIGS. 2 and 3, the metal plate-like bodies 14 and 16 are arranged at an angle of 90 ° for each step in the longitudinal direction of the cylindrical body portion 12. As a result, air can pass through the interior 12b of the cylindrical body portion 12 without deviation. This also improves the heat exchange performance.
Furthermore, as shown to FIGS. 2-4, it is an inner side corner | angular part of the cylinder part 12, Comprising: It surrounds with the 1st metal plate-like body 14 (14b) and the 2nd metal plate-like body 16 (16b). The portion is a rectangular empty space 19. The empty space 19 is formed over the entire length of the cylindrical body portion 12 of the heat exchanger 10. Further, it is formed at each of the four inner corners of the cylindrical body portion 12. Due to the presence of the empty space 19, an airflow in the longitudinal direction of the cylindrical body portion 12 is generated at each inner corner portion. As a result, air agitation is suitably performed with a good balance, and heat exchange performance can be improved.

It goes without saying that the heat exchanger according to the present invention can be used not only for heat exchange between air but also for other gases.
Furthermore, if the heat exchanger according to the present invention is used for heat exchange between fluids, it can also be applied to a radiator of a car or a heat exchanger of an air conditioner. In that case, the range in which the film 18 is formed may be appropriately selected according to the use conditions.
The present invention can also be applied to a heat exchanger having a metal tube as a constituent element. That is, the heat exchange efficiency can be increased by forming a film containing a crystalline carbon material such as carbon nanotubes on the inner or outer surface of the tube that is on the heat radiation side. This is because heat is favorably absorbed on the surface without the film containing carbon nanotubes and the like, and heat radiation is favorably performed on the surface on which the film is formed. This technology can be used, for example, for piping in boilers and floor heating facilities.

Next, an example of the best mode according to the deodorizing and sterilizing apparatus of the present invention will be described in detail with reference to the accompanying drawings. FIG. 5 is a perspective view showing the deodorizing and sterilizing apparatus 20 of the present invention, and FIG. 6 is a cross-sectional view for explaining the internal structure of the deodorizing and sterilizing apparatus 20.
As shown in FIG. 5, the deodorizing and sterilizing device 20 is miniaturized for in-vehicle use and has a size equivalent to that of a normal on-vehicle air purifier (horizontal installation type) fixed to a ceiling portion of a passenger car. Designed to. Moreover, it is designed so that a 12V power supply can be used as in the case of a normal air-conditioning vehicle installed on the back.
According to the deodorizing and sterilizing apparatus 20, the interior air is taken in and processed, and the purified air is exhausted, so that the odor components in the air can be decomposed and bacteria and viruses in the air can be sterilized.

21 is a 1st ventilation fan, 22 is a 2nd ventilation fan, These 2 ventilation fans comprise the ventilation means.
The 1st ventilation fan 21 is provided in the inlet 20a which takes in air with the end of the deodorizing sterilizer 20. FIG. This acts to push air into the deodorizing sterilizer 20. Moreover, the 2nd ventilation fan 22 is provided in the exhaust port 20b which exhausts air in the other end of the deodorizing sterilizer 20. FIG. This acts to suck the air out of the deodorizing and sterilizing device 20.
These blower fans 21 and 22 are arranged in series with the internal structure of the main body interposed therebetween, whereby the deodorizing and sterilizing device 20 can be reduced in size.
The blowing means is not limited to this, and may be one blowing fan as long as it has sufficient discharge or suction capability. Moreover, many may be sufficient. Furthermore, the convection action of air can also be utilized.

Reference numeral 24 denotes a heating unit that heats the air while the air is sent by the blower fans 21 and 22.
As shown in FIG. 6, reference numeral 25 denotes a heater, and a ceramic body bobbin wound with a nichrome wire, or a heater device (seeds heater) having its own thermostat function can be used.
Reference numeral 26 denotes a heat radiating plate, which is provided so that the air blown can be suitably heated by the heat of the heater 25.
In addition, about this heating part 24, when incorporating in a vehicle, it is also possible to utilize the heater apparatus for heating of a vehicle. Furthermore, in the case of a vehicle, the waste heat of the engine that heats the muffler or the like can be used as a heat source of the heating unit.

According to the heating unit 24, room temperature air can be heated to around 300 ° C. And a certain temperature range can be maintained.
For this reason, bacteria and viruses present in the air are heat sterilized, and gas or the like as a predetermined odor component is thermally decomposed. In addition, these air pollutants are burned out. Thereby, deodorization and sterilization are performed suitably.

Reference numeral 28 denotes a catalyst portion, which can suitably decompose a gas such as a heated odor component by the action of a catalyst activated by heating. In the catalyst portion 28 of the present embodiment, a catalyst is supported on a porous ceramic support having air permeability.
The catalyst unit 28 is not limited to this, and it is needless to say that another known carrier carrying a predetermined catalyst can be disposed corresponding to a target odor component or harmful component.

Reference numeral 30 denotes a heat exchanging unit that acts to absorb the heat of the air on the exhaust side heated by the heating unit 24 and give the heat to the air on the intake side.
The heat exchange unit 30 is mainly configured by the heat exchanger 10.
In the heat exchanger 10 of this aspect, a coating containing carbon nanotubes is formed on the surface of the metal material of the outer part 12a of the cylindrical body part 12, and the surface of the metal material of the inner part 12b of the cylindrical body part 12 contains carbon nanotubes. The film to be formed is not formed. Thereby, the fins 14a, 14c, and 16a of the exterior 12a of the cylinder part 12 act suitably as a radiation fin. On the other hand, the fins 14b and 16b in the inside 12b of the cylindrical body portion 12 preferably act as heat absorption fins.
The details of the heat exchanger 10 have been described above with reference to FIGS. In addition, in this aspect, in order to increase the number of stages of the metal plate-like bodies 14 and 16, the first metal plate-like bodies 14 are in a positional relationship where they interfere with each other in the interior 12b. In order to eliminate this interference, a notch 14x is provided.
According to this heat exchanger 10, the heat exchange efficiency in the deodorizing and sterilizing apparatus 20 can be remarkably increased, and the deodorizing and sterilizing apparatus 20 can be downsized.

Further, as shown in FIG. 6, in the heat exchanger 10, fins 14 a, 14 b, 14 c, 16 a, and 16 b are formed of metal plate-like bodies 14 and 16. The metal plate-like bodies 14 and 16 are provided at predetermined positions by being inserted into and fixed to the slits 13 provided in the cylindrical body portion 12. As shown in FIG. 4, the space between the slit 13 and the metal plate-like bodies 14 and 16 is hermetically sealed by a coating material that contains the carbon nanotubes and forms the coating film 18.
The details have been described above with reference to FIGS.
According to this, since a leak can be prevented, the heat exchange efficiency of the deodorizing sterilizer 20 can be improved. And since the leak from the contaminated air side (intake side) to the purified air side (exhaust side) after deodorization sterilization can be prevented, the deodorization sterilization efficiency can be remarkably enhanced.

Reference numeral 32 denotes a casing, which forms the outer shape of the deodorizing and sterilizing apparatus 20. The above-described configuration is arranged in series inside the casing 32.
Reference numeral 34 denotes a bottomed cylindrical body, and a bottom 34a is positioned on the first blower fan 21 side. The heating unit 24, the catalyst unit 28, and the heat exchange unit 30 are arranged in this order from the bottom 34a side.
A space between the inner side of the casing 32 and the outer side of the bottomed cylindrical body 34 is provided at a predetermined interval, and serves as a first flow path 35 (outer flow path) through which air can flow.
Note that the presence of the bottom 34 a of the bottomed cylindrical body 34 is configured so that outside air does not directly flow into the heating unit 24.

Reference numeral 36 denotes a partition plate portion that closes and seals the outer 12a side at the exhaust side end of the heat exchanger 10 and also seals the casing 32. In addition, the end portion on the exhaust side of the heat exchanger 10 has an inside 12b opened to the second blower fan 22 side. Thereby, the air on the intake side is prevented from leaking to the exhausted purified air side.
In addition, a space is provided between the inner side surface 34b of the bottomed cylindrical body 34 and the outer side surface of the cylindrical body portion 12 so that the radiation fins 14a, 14c, and 16a can be positioned. And the space | interval becomes the 2nd flow path 37 (flow path of an intermediate part) through which air can distribute | circulate.
Reference numeral 34 c denotes a communication port, which is provided in the vicinity of the partition plate portion 36 on the side wall of the bottomed cylindrical body 34. The first flow path 35 and the second flow path 37 are communicated with each other through the communication port 34c.

Further, the second passage 37 communicates with the inside of the cylindrical portion 12 (inner flow path) that extends to the vicinity of the bottom 34 a of the bottomed cylindrical body 34. The cylinder part 12 is extended so that the catalyst part 28 and the heating part 24 may be incorporated.
In this way, since multiple flow paths are formed, air flows back and forth in a zigzag manner as shown by the arrows in FIG. That is, the air sucked in by the first blower fan 21 is, in order, the first flow path 35, the second flow path 37 (external 12a), the heating section 24 in the cylindrical body section 12, the catalyst section 28, and It passes through the inside 12b of the heat exchanger 10 and is sucked and exhausted by the second blower fan 22.

Therefore, while the inhaled air passes through the first flow path 35 and the second flow path 37, it is suitably heat-exchanged and heated with the air heated by the heating unit 24. . For this reason, it can be said that the heat exchanging unit 30 includes the heat exchanger 10, the first flow path 35, and the second flow path 37. Since the intake air is suitably preheated (heated) by the heat exchanging unit 30, the heating unit 24 can suitably raise the temperature of the air to a predetermined temperature with a small amount of energy.
And in this aspect, the air heated to about 300 degreeC by the heating part 24 was heat-exchanged suitably, and it was able to cool to about 30 degreeC suitably at the time of normal temperature in the exhaust port 20b.
For this reason, even if it uses the deodorizing sterilizer 20 concerning this invention, the thermal influence with respect to the air in a vehicle is small, and it can utilize suitably also in the environment cooled. Thereby, useless consumption of energy can be suppressed.
In addition, according to the deodorizing and sterilizing apparatus of this aspect, it was possible to efficiently deodorize and sterilize about 0.6 cubic meters / minute of in-vehicle air.

Another embodiment of the deodorizing and sterilizing apparatus according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 7 is a perspective view showing the overall configuration of the deodorizing and sterilizing apparatus 40 according to the present invention.
The deodorizing and sterilizing apparatus 40 according to the present embodiment is formed as a floor-standing type, and a casing portion 44 formed in an elongated cylindrical shape is supported upright on a base 42 in a vertical direction. Reference numeral 45 denotes an indoor air inlet provided at the lower portion of the front side surface of the casing portion 44. The introduction port 45 opens in the form of a plurality of narrow slits. Further, the bottom surface of the casing portion 44 is closed by the base 42.

  Reference numeral 46 denotes a processing air discharge opening provided on the upper surface of the casing portion 44. The discharge port 46 is opened in a circular shape, and a curved guide rib is provided on the opening surface. The upper lid 47 of the casing portion 44 is formed on an inclined surface whose front is low, and the discharge port 46 is provided at a substantially central portion of the inclined upper lid 47. 48 is an ON-OFF switch of the deodorizing and sterilizing apparatus 40.

  The deodorizing and sterilizing apparatus 40 deodorizes and sterilizes indoor air by taking room air into the apparatus from an inlet 45 that opens at the bottom of the casing portion 44, and sending out the deodorized and sterilized air from the discharge port 46. Therefore, by installing this deodorizing and sterilizing device 40 in the room, when air conditioning equipment such as an air conditioner is installed in the room, the air in the room is also circulated by the air conditioning equipment. The indoor air is deodorized and sterilized.

FIG. 8 is a cross-sectional view showing the internal configuration of the deodorizing and sterilizing apparatus 40. Reference numeral 50 denotes an inner cylinder provided in the casing portion 44 so as to communicate between the bottom portion of the casing portion 44 and the upper lid 47. The upper opening of the inner cylinder 50 serves as the discharge port 46.
52 is a heat insulating material that covers the outer peripheral surface of the inner cylinder 50. The inner wall surface of the casing portion 44 and the outer surface of the heat insulating material 52 covering the outer peripheral surface of the inner cylinder 50 are provided so as to be slightly separated from each other, and between the inner peripheral surface of the casing portion 44 and the outer peripheral surface of the heat insulating material 52. Is formed as an air flow path 54.

Note that a first fan 56 and a second fan 58 are arranged in the vertical direction on the upper side of the inner cylinder 50 on the back side of the casing portion 44. The first fan 56 and the second fan 58 are provided so as to communicate with inlets 56 a and 58 a provided to be opened in the inner cylinder 50.
A partition plate 60 is provided in the inner cylinder 50 between the first fan 56 and the second fan 58 so as to partition the inlets 56a and 58a.
With this partition plate 60, the air supply from the first fan 56 is sent to the upper side of the inner cylinder 50, and the air supply from the second fan 58 is sent to the lower side of the inner cylinder 50.

The room air sent from the second fan 58 to the inner cylinder 50 includes a heater part 62 disposed at the bottom of the inner cylinder 50, a deodorizing and sterilizing part 64 disposed at the upper part of the heater part 62, and a deodorizing and sterilizing part. It passes through the heat exchanger 66 provided at the upper part of 64 and is discharged from the upper part of the inner cylinder 50 through the discharge port 46 into the room.
The heater unit 62, the deodorizing and sterilizing unit 64, and the heat exchanger 66 are connected to each other in the vertical direction parallel to the axial direction of the inner cylinder 50, and the indoor air fed into the heater unit 62 from the lower part of the heater unit 62 is The heater 62, the deodorizing and sterilizing unit 64, and the heat exchanger 66 are provided so as to pass through in this order.

  The heater unit 62 is obtained by winding a heater around the outer periphery of a bobbin formed of a cylindrical ceramic body, and the room air that has entered the heater unit 62 is heated when the heater unit 62 is raised. In the deodorizing and sterilizing apparatus 40 of this embodiment, the room air is provided by the heater 62 so as to be heated to about 280 ° C. to 330 ° C.

The deodorizing and sterilizing unit 64 functions to deodorize and sterilize the room air heated by the heater unit 62.
In the present embodiment, the deodorizing and sterilizing portion 64 is formed by a ceramic body that is formed in a block shape and has many rectangular holes penetrating in a honeycomb shape in the axial direction of the inner cylinder 50 (thickness direction of the ceramic body). . Specifically, a γ-alumina coating is applied to a carrier (ceramic body) made of ceramic such as porous cordierite and a catalyst such as platinum, palladium or rhodium is dispersed and coated on the surface. In place of the ceramic body, a metal wire-like carrier such as an aluminum alloy coated with a catalyst dispersed in the same manner may be used.

As shown in FIG. 8, the heater unit 62 and the deodorizing and sterilizing unit 64 are covered with a heat insulating material 65 to form a cylinder, and the indoor air fed into the heater unit 62 and the deodorizing and sterilizing unit 64 is contained in the inner cylinder 50. To prevent leakage. Further, the indoor air is efficiently heated in the heater section 62 and the deodorizing and sterilizing section 64 by the heat insulating material 65, and the catalyst is activated so that the deodorizing and sterilizing (catalytic oxidation) action is effectively performed. Of course.
In this embodiment, the ceramic bodies carrying the catalyst are arranged in two stages in the vertical direction so that the deodorizing and sterilizing action on the indoor air acts more effectively. Thus, by providing the ceramic bodies carrying the catalyst in series and in a plurality of stages, it is possible to make the deodorizing and sterilizing action more effective.

  The heat exchanger 66 has a function of guiding the indoor air deodorized and sterilized by the deodorizing and sterilizing unit 64 to the upper part of the inner cylinder 50 and discharging it from the discharge port 46, and air introduced into the inner cylinder 50 (cold air) Heat exchange with the air (high temperature air) rising from the deodorizing and sterilizing unit 64 is performed, the air introduced into the inner cylinder 50 is warmed and introduced into the heater unit 62, and the high temperature air sent from the deodorizing and sterilizing unit 64 is cooled. Then, it sends out to the room.

  For this reason, the heat exchanger 66 includes a cylindrical body portion 68 that connects between the deodorizing and sterilizing portion 64 and the partition plate 60, and a plate-like radiating fin 70 attached to the cylindrical body portion 68. The cylindrical body portion 68 is formed in a rectangular cylindrical shape, and the heat radiating fins 70 are attached in a plurality of stages in the axial direction of the cylindrical body portion 68. The heat exchanger 66 according to the present embodiment penetrates through the cylindrical body portion 68 so that the purified air (high-temperature air) rising from the deodorizing and sterilizing portion 64 is retained in the cylindrical body portion 68 as much as possible. Radiating fins 70 are attached so as to cross. The heat radiating fins 70 are provided with appropriate gaps between the heat radiating fins 70 and the inner side surfaces of the cylindrical body 68 so that air can flow through the cylindrical body 68.

FIG. 9 shows a front view of the heat exchanger 66. The heat radiating fins 70 are provided so as to extend in four directions from each side of the cylindrical portion 68. The radiating fins 70 are provided so as to be inclined with respect to the axial direction of the cylindrical body 68. This is because the radiating fins 70 are attached so as to cross the inside of the cylindrical part 68, so that air can rise along the inclined surface of the radiating fins 70 inside the cylindrical part 68.
In the same figure, 70a is the 1st radiation fin attached so that it may cross the cylinder part 68, and 70b is the 2nd radiation fin attached without crossing the cylinder part 68. FIG. Since the first radiating fin 70a and the second radiating fin 70b are provided at the same height position in each step, only one of the radiating fins 70 that are arranged in an intersecting manner is provided so as to cross the cylindrical body portion 68. .

In addition, a coating film containing carbon nanotubes is formed on the surface of the outside of the cylindrical portion 68 including the heat dissipating fins 70. The details of the coating have been described above with reference to FIGS. Thereby, heat exchange efficiency can be improved remarkably and a deodorizing sterilizer can be reduced in size.
Moreover, both the 1st radiation fin 70a and the 2nd radiation fin 70b are attached to the cylinder part 68 in the air-sealed state by the said film. Thereby, while improving heat exchange efficiency, it can prevent a leak and can improve deodorizing sterilization efficiency remarkably.

In addition, the attachment direction of the 1st radiation fin 70a crossing the cylinder part 68 becomes the arrangement | positioning which changed the arrangement direction 90 degree | times for every step. That is, the first radiating fins 70a provided in the adjacent steps are arranged so as to cross each other.
10 and 11 show a planar arrangement of the first heat radiation fin 70a and the second heat radiation fin 70b. 10 and 11 show a planar arrangement of the first radiating fins 70a and the second radiating fins 70b in adjacent stages. As described above, the first heat radiating fin 70a is disposed so as to cross the cylindrical body portion 68, whereas the second heat radiating fin 70b is disposed so as to sandwich the first heat radiating fin from both sides. The inner end extends to the inside of the cylindrical portion 68 to a position where it does not interfere with the radiating fin.

As shown in FIGS. 10 and 11, the planar arrangement of the first radiating fins 70a and the second radiating fins 70b in each stage is exactly the same, and is offset by 90 degrees. In this way, the first radiating fins 70a and the second radiating fins 70b are displaced by 90 degrees at every step, so that the first radiating fins 70a are alternately arranged inside the cylindrical body portion 68. It intersects and overlaps in the axial direction of the cylindrical portion 68.
Since the second radiating fins 70b are also arranged to be inclined with respect to the axial direction of the cylindrical body portion 68 and intersect with the first radiating fins 70a, the inside of the cylindrical body portion 68 is inclined. It is a space where plates are combined from all sides.

Thus, by arranging the heat dissipating fins 70 so as to intersect with each other inside the cylindrical body 68, the air that has entered the cylindrical body 68 from the deodorizing and sterilizing unit 64 is forcibly bent in the cylindrical body 68. As a result, the heat is effectively exchanged with the heat radiating fins 70.
In this embodiment, the heat exchanger 66 is formed of a metal having good thermal conductivity so as to increase the heat exchange efficiency. In addition, as shown in FIGS. 9 to 11, a plurality of slits 72 are provided at the end of the radiating fin 70 extending to the outside of the cylindrical body portion 68, and when the indoor air flows down inside the inner cylinder 50, The room air passes through the slit 72 so that heat is effectively exchanged with the radiating fins 70.

  As described above, according to the deodorizing and sterilizing apparatus of this embodiment, the indoor air fed into the inner cylinder 50 from the air flow path 54 provided on the back side of the casing portion 44 by the second fan 58 is exchanged with heat. When gradually flowing down from the upper part of the vessel 66, heat is exchanged with the radiating fins 70 to be heated. Then, after entering the heater part 62 arranged at the bottom of the inner cylinder 50, heated by the heater part 62 and deodorized and sterilized by passing through the deodorizing and sterilizing part 64, the cylindrical part 68 of the heat exchanger 66 is obtained. The heat is exchanged with the heat radiating fins 70 while the cylindrical body portion 68 is raised, and the indoor air flowing down in the inner cylinder 50 is heated and cooled. It flows out to the top of the cylinder 50.

The air (purified air) that has flowed out to the uppermost part of the inner cylinder 50 is combined with the indoor air introduced into the upper part of the inner cylinder 50 by the first fan 56 from the air flow path 54 provided on the back side of the casing part 44. It is discharged into the room from a discharge port 46 provided in the upper part of the casing part 44.
In the heater unit 62, the air is heated to about 280 ° C. to 330 ° C., but when discharged from the upper part of the inner cylinder 50 via the heat exchanger 66, the room temperature is about 30 ° C. at room temperature. Until cooled. Therefore, there is no problem in using the deodorizing and sterilizing apparatus in combination with the air conditioner.

The amount of processing air of the deodorizing and sterilizing apparatus of the present embodiment is about 0.3 cubic meter / minute, and by using this apparatus, the indoor air can be efficiently deodorized and sterilized. Since this device is based on a catalytic combustion method that overheats indoor air and deodorizes by catalytic action, it can perform extremely effective deodorizing action, and also has a remarkable sterilizing action for MRSA, Bacillus subtilis, influenza virus, etc. It was confirmed. Furthermore, it is considered to be extremely effective for other pathogens where air infection such as SARS is a problem.
In addition, since this device is formed in a compact thin columnar body, it can be used in a place where it does not get in the room, and it is easy to handle because it does not use a deodorizing filter using activated carbon. There are advantages.

  As described above, the present invention has been described in various ways with reference to preferred embodiments. However, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. That's it.

It is a front view of the heat exchanger which shows one form of this invention. It is explanatory drawing explaining arrangement | positioning of the fin of the heat exchanger of FIG. It is explanatory drawing explaining arrangement | positioning of the other step of the fin of the heat exchanger of FIG. FIG. 3 is an enlarged view illustrating a part of FIG. 2 in an enlarged manner. It is a perspective view of the deodorizing sterilizer which shows one form of this invention. It is sectional drawing explaining the internal structure of the deodorizing sterilizer of FIG. It is a perspective view which shows one Example of the deodorizing sterilizer of this invention. It is sectional drawing explaining the internal structure of the deodorizing sterilizer of FIG. It is a front view of the heat exchanger used for the deodorizing sterilizer of FIG. It is explanatory drawing explaining arrangement | positioning of the fin of the heat exchanger of FIG. It is explanatory drawing explaining arrangement | positioning of the other step of the fin of the heat exchanger of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Heat exchanger 12 Cylindrical part 12a Outside 12b Inside 13 Slit 14 1st metal plate-like body 14a, 14b, 14c Fin 15 Metal material 16 2nd metal plate-like body 16a, 16b Fin 18 Coating 20 Deodorizing sterilizer 20a Intake port 20b Exhaust port 21 1st blower fan 22 2nd blower fan 24 heating part 25 heater 26 heat sink 28 catalyst part 30 heat exchange part 32 casing 34 bottomed cylindrical body 35 first flow path 36 partition plate part 37 Second flow path 40 Deodorizing and sterilizing device 42 Base 44 Casing section 46 Discharge port 50 Inner cylinder 52 Heat insulating material 54 Air passage 56 First fan 58 Second fan 60 Partition plate 62 Heater section 64 Deodorizing and sterilizing section 66 Heat exchange Part 68 Cylinder part 70 Radiation fin 70a First radiation fin 70b Second radiation fin

Claims (5)

A cylindrical body part is provided, and heat exchange fins are provided outside and inside the cylindrical body part to exchange heat between gases passing through the inside and outside of the cylindrical body part. A heat exchanger made of a metal material,
The heat exchange fin is formed of a metal plate-like body, and the metal plate-like body is inserted into a slit provided in the cylindrical body portion and fixed to be arranged at a predetermined position, and the coating material is By being painted, the space between the slit and the metal plate is airtight ,
The heat exchanger characterized in that the coating material contains a crystalline carbon material such as a carbon nanotube and is applied to at least a part of the surface of the metal material.   The heat exchanger according to claim 1, wherein a coating material containing a crystalline carbon material such as the carbon nanotube is applied to at least a part of the surface of the metal material outside the cylindrical body portion.   A heat exchanger that heats the air while the air is sent by the air blower, and a heat exchanger that absorbs heat of the air on the exhaust side heated by the heater and gives heat to the air on the air intake side In a deodorizing and sterilizing apparatus that decomposes odorous components in the air and sterilizes bacteria and viruses in the air,
  The heat exchange part includes a cylindrical part formed in a cylindrical shape, fins for heat exchange are provided outside and inside the cylindrical part, and gas passing through the inside and outside of the cylindrical part is provided. The heat exchange fin is formed by a metal plate-like body, and the metal plate-like body is inserted into a slit provided in the cylindrical body portion. Arranged at a predetermined position by being fixed, air-tight between the slit and the metal plate-like body by applying a coating material,
  The blower means is constituted by a first blower fan arranged at the intake port of the device and a second blower fan arranged at the exhaust port of the device,
  The first blower fan and the second blower fan are arranged in the casing in the order of the heating unit, the catalyst unit, and the heat exchanger from the first blower fan side to the second blower fan. A deodorizing and sterilizing apparatus, wherein the deodorizing and sterilizing apparatus is arranged in series with the internal structure arranged therebetween.   The deodorizing and sterilizing apparatus according to claim 3, wherein the heat exchanger is the heat exchanger according to claim 1 or 2.   In order to prevent the gas from flowing directly from the first blower fan to the heating unit, it has a bottom portion arranged on the first blower fan side, and the heating unit, the catalyst unit, and the heat exchanger are inside. The deodorizing and sterilizing apparatus according to claim 3, further comprising a bottomed cylindrical body arranged on the bottom.

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