JP3469423B2 - Electronic cooling evaporator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for concentrating various liquids, and more particularly to a small electronic cooling system using an element having a heat radiating surface for radiating heat by passing an electric current and an endothermic surface for absorbing heat. It relates to an evaporative concentration device.

[0002]

2. Description of the Related Art Conventionally, as a device for concentrating a liquid, for example, as described in Japanese Patent Application Laid-Open No. 7-209841, an evaporation tank and a condensation tank are divided into left and right parts, and an upper part of each tank. There is a developing waste liquid concentrating device comprising a Peltier element and a concentrating tank communicating with each other, and a heat generating side of the Peltier element is in contact with the evaporation tank and a heat absorbing side of the Peltier element is in contact with the dew condensation tank.

[0003]

However, since the heat generation temperature of the Peltier element is low, for example, Japanese Patent Laid-Open No. 7-209
The concentrator using the Peltier device described in No. 841 has a problem that the amount of evaporation is small, the processing capacity is very small, and the concentration of a low amount of processing cannot be performed satisfactorily. Further, in the past, since the amount of heat radiation is large relative to the amount of cooling heat of the Peltier device, a part of the heat radiation part was discharged by air cooling etc. to balance the heating and cooling of evaporative concentration. A structure for discharging a part of the heat is required, and the structure for this partial heat dissipation is complicated.

The present invention has been made in view of the above point, and balances heating and cooling for evaporation by using another cooling means, which is small in size, low in cost, low in power consumption, and concentrated. An object is to provide an electronic cooling type evaporative concentrator having a high efficiency and a simple structure.

[0005]

The above objects are achieved by the following claims.

[Claim 1] "A heat-dissipating heat-absorbing portion having a heat-dissipating portion that dissipates heat by passing an electric current and a heat-absorbing portion that absorbs heat, and heat is dissipated from the heat-dissipating portion of the heat-dissipating heat-absorbing portion to evaporate the liquid. In an electronic cooling type evaporative concentrator having an evaporative concentrating section for concentrating, and heat absorption of the heat absorbing section of the heat radiating and absorbing section, a cooling condensing section for cooling and condensing the gas from the evaporative concentrating section, A gas containing the generated vapor of the evaporative concentration section is blown to the cooling condenser section, and a gas is passed through the cooling condenser section to return to the evaporative concentration section.
The circulating air is cooled in the circulating air flow path and / or the cooling / condensing portion by a cooling means different from the heat radiating / absorbing portion.
And, an electronic cooling system evaporative concentration apparatus, wherein the cooling capacity of said further cooling means is adjustable. According to the first aspect of the present invention, in addition to the heat radiation and heat absorption portion for cooling the vapor, auxiliary cooling is performed by separate cooling means to balance and adjust the heating and cooling of evaporation, thereby partially heating the heat radiation portion. The structure for exhausting heat is unnecessary, and the electronic cooling type evaporative concentrator is small in size and low in cost, consumes less power, and has a high concentration efficiency and a simple structure. Also, another cooling means
The cooling capacity of the can be adjusted, even if the environmental temperature changes
Stable processing capacity can be obtained.

[0007]

[0008] 請 [Claim 2] "the further cooling means characterized in that it is a one of the methods below A, B, C
The electronic cooling type evaporative concentrator according to claim 1 .

A: Cooling heat generated from a heat absorbing portion of a heat radiating and absorbing portion different from the heat radiating and absorbing portion, and the heat radiating portion is air-cooled by outside air. B: Air in a circulating air blow path is directly passed through a heat exchanger by outside air. Air-cooling method C: method of indirectly cooling the air in the circulation air flow path by the outside air with a heat exchanger having a heat pipe ”According to the invention of claim 2 , a preferable cooling method having a simple structure and good cooling efficiency Can be obtained, and the concentration efficiency can be increased.

[0010] [Claim 3] "the evaporation unit, a temperature detecting means provided in at least one position of the cooling and condensing section and the circulating air passage to regulate the cooling capacity of the further cooling means by that temperature detection result The electronic cooling type evaporative concentrator according to claim 1 or 2, which is controlled. According to the invention of claim 3 , by controlling the cooling capacity of another cooling means based on the temperature detection result, more stable processing capacity can be obtained even if the environmental temperature changes. [Claim 4 ] "The another cooling means is provided in a circulating air flow path to the evaporative concentration section after passing through the cooling condensation section," in any one of claims 1 to 3. Electronic cooling evaporative concentrator. According to the fourth aspect of the present invention, the concentration efficiency can be further increased by cooling in the circulation air flow path leading to the evaporative concentration section after passing through the cooling condenser section. [Claim 5] The temperature detecting means is provided "in the heat radiating portion near the heat radiating heat absorption part, either one of claims 1 to 4, characterized in that stopping the energization of the heat radiating heat absorption unit at a constant temperature or more The electronic cooling type evaporative concentrator according to 1. According to the invention of claim 5 , durability can be improved by preventing the temperature of the heat radiating and absorbing part from rising above a certain level. [Claim 6 ] "At least a part of the heat radiation from the power source of the heat radiation / absorption unit, the operation power source, and the drive source of the blower unit is blown to the target liquid of the evaporation concentration unit and / or the evaporation concentration unit. The electronic cooling type evaporative concentrator according to any one of claims 1 to 5 , which has a structure for heating a gas. According to the invention of claim 6 , the concentration efficiency can be further increased by utilizing the heat radiation from at least a part of the power source of the heat radiation / absorption unit, the operation power source, and the drive source of the blowing unit. [Claim 7 ] "The electronic cooling system according to any one of claims 1 to 6 , wherein a heat exchange structure for exchanging heat between the gas entering the evaporative concentration section and the gas after exiting is provided. Evaporative concentrator. According to the invention of claim 7 , heat exchange is performed between the gas entering the evaporating and concentrating portion and the gas after exiting, whereby the liquid can be evaporated with high efficiency, and the concentrating efficiency is improved. [Claim 8 ] "Using a Peltier element in which one side serves as a heat-dissipating portion and the other side serves as a heat-absorbing portion by applying a direct current to the heat-dissipating heat-absorbing portion. The electronic cooling type evaporative concentrator according to any one of claims 1 to 7 , wherein the difference is in the range of 10 to 50 ° C. ] This claim 8
According to the invention of claim 1, a Peltier element is used and a stable state of evaporation and concentration is obtained by temperature control, so that power consumption is reduced and high processing capacity is obtained. [Claim 9] claims and "wherein also without On / Off controlling the DC power source is set to a DC voltage as the temperature difference between the heat radiating portion and the heat absorbing portion is in the range of 10 to 50 ° C. 8
The electronic cooling type evaporative concentrator described. According to the invention of claim 9 , a device for controlling the turning on / off of the DC power supply is not required, and the cost can be reduced.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an example of a specific example relating to the present invention will be shown as an embodiment, but the present invention is not limited thereto.

First Embodiment FIG. 1 is a schematic view of an example of an embodiment of the present invention. This electronic cooling type evaporative concentrator uses a Peltier element 9
A heat radiating and absorbing section 10, an evaporating and condensing section 1 for evaporating and condensing a liquid, and a cooling and condensing section 2 for condensing by cooling evaporated vapor. It has a communication pipe 6 that communicates with the section 2, and a communication pipe 11 that communicates the cooling condensation unit 2 and the evaporation concentration unit 1. The communication pipe 11 is provided with a fan 3 as a blowing unit that blows air to the liquid surface in the evaporative concentration unit 1.

In this electronic cooling type evaporative concentration apparatus, a gas containing the vapor generated in the evaporative concentration section 1 is blown to the cooling condensation section 2 by a communication tube 6, and the gas passing through this cooling condensation section 2 is communicated by a communication tube 11. A circulation air flow path A returning to the evaporative concentration section 1 is provided.

A heat radiating and absorbing section 10 having a Peltier element 9.
Is arranged so that the heat radiating portion 7 is on the upper side and the heat absorbing portion 8 is on the lower side.
Is arranged on the upper side of the heat radiating and absorbing section 10, and the cooling condenser section 2 is arranged on the lower side of the heat radiating and absorbing section 10 so as to contact the heat absorbing section 8. The evaporative concentration section 1 is composed of a bag, and has a port 1a for discharging gas to the communication pipe 6 and a port 1b for blowing air from the fan 3 arranged in the communication pipe 11.

The bag forming the evaporative concentration section 1 is preferably made of foldable soft plastic.
Examples of soft plastics include polyethylene and nylon, vinylidene chloride, vinyl chloride, polyacetal,
Examples thereof include a single layer of vinyl acetate and a laminated sheet. Also,
It is preferable that the distance between the liquid surface L and the ceiling surface 1d is 1 to 10 cm from the viewpoint of improving evaporation efficiency and good transportability. The amount of liquid in the evaporative concentration section 1 is preferably in the range of 1 to 20 liters from the viewpoint of handleability and processing capacity, and the size (bottom area) is preferably in the range of 0.05 to ² m ² from the viewpoint of operability and processing capacity. . In addition, the diameter of the two mouths 1a and 1b is preferably 30 to 100 mm from the viewpoint of obtaining a sufficient air flow rate and the prevention of liquid leakage, and the two mouths from the viewpoint of obtaining a sufficient air flow rate. The distance between the parts is preferably as large as possible, and the preferred range is 40 to 70 cm.
Further, it is preferable that both of the mouth portions 1a and 1b are provided on one surface of the liquid storage portion 4, but the present invention is not limited thereto.

By supplying a direct current to the Peltier element 9, the temperature of the heat radiating portion 7 of the heat radiating and heat absorbing portion 10 rises and the temperature of the heat absorbing portion 8 falls. The liquid in the evaporative concentration section 1 in contact with the heat radiating surface 7 is heated, and the fan 3 blows air from the communication pipe 11 to the liquid surface in the evaporative concentration section 1, thereby promoting the evaporation of the liquid. The vapor generated in the evaporative concentration section 1 passes through the communication pipe 6 and is guided to the cooling condensation section 2.

The heat dissipation and heat absorption capacity of the Peltier device is 100 to 5
It is preferably in the range of 00 W, and the heat generation temperature of the heat emitting portion is preferably 30 ° C to 70 ° C. One Peltier element 9 may be used, or a plurality of Peltier elements may be arranged and used. In addition, it is preferable to provide a waterproof means around the heat radiating and heat absorbing portion 10 so that the Peltier element 9 does not come into contact with moisture. Further, it is preferable that the heat radiation and heat absorption section 10 has a structure that allows the Peltier element 9 to be easily replaced.

In the communication pipe 11 and the communication pipe 6, the evaporative concentration section 1
Heat exchange structure 20 for exchanging heat between the entering gas and the exiting gas
This heat exchange structure 20 constitutes a cooling means. The gas that enters the evaporative concentration section 1 is preheated by the gas that has left the evaporative concentration section 1, and the gas that has exited the evaporative concentration section 1 by the gas that enters the evaporative concentration section 1 does not undergo primary cooling. The gas entering the evaporative concentrating unit 1 and the gas after it are heat-exchanged with each other, the liquid can be evaporated with high efficiency,
Concentration efficiency is improved.

The communication pipe 6 is a fan 2 which constitutes cooling means.
1 is provided, and the gas that has exited from the evaporative concentration section 1 by driving the fan 21 and is primarily cooled is subjected to secondary cooling by the outside air and sent to the cooling condensing section 2. The gas is cooled by a fan air cooling method. The cooling / condensing unit 2 includes the heat radiating and absorbing unit 10
Final cooling is performed as the temperature of the endothermic part 8 decreases. The vapor introduced to the cooling condenser 2 is cooled and condensed there to become a liquid. An outlet 2a is provided at the bottom of the cooling condensing unit 2,
The liquid generated by the condensation is discharged from the discharge port 2a, and the remaining gas that is not condensed is returned to the evaporative concentration section 1 by driving the fan 3 from the communication pipe 11. By inclining the bottom of the cooling condensing unit 2, the liquid generated by the condensation is discharged through the discharge port 2a.
Can be easily led to.

The heat exchange structure 20 and the fan 21 constitute a cooling means B separate from the heat radiating and absorbing part 10 in the circulating air flow path A, and the circulating air is cooled by the separate cooling means B, which is an electronic cooling type. All the heat dissipation is used for liquid evaporation in the waste liquid device.
In this way, in addition to the heat radiating and absorbing section 10 for cooling the vapor, auxiliary cooling is separately performed by the separate cooling means B to balance and adjust the heating and cooling of evaporation, and thereby a part of the heat of the heat radiating section is discharged. The structure is unnecessary, and the electronic cooling type evaporative concentrator is
It is small, low cost, low power consumption, high concentration efficiency and simple structure.

The fan 21 constituting another cooling means B is
The cooling capacity can be adjusted by controlling the rotation speed, and since the cooling capacity is adjusted, stable processing capacity can be obtained even if the environmental temperature changes.

FIG. 2 is a diagram showing the principle structure of the Peltier device. The Peltier element 9 is a part that acts centrally in the heat generating and absorbing section 10, and has a configuration in which the N-type semiconductor 35N and the P-type semiconductor 35P are connected in series with the DC power source 38 via the electric conduction section 36. Has become. The N-type semiconductor 35N and the P-type semiconductor 35P are, for example, bismuth telluride semiconductors, and are configured as elements of excess electrons and deficiency electrons due to impurity doping, respectively. Further, the electric conduction section 36 is connected to the heat absorption section 37B and the heat emission section 37A via the electric insulation section 39, and these are connected to the heat absorption section 8 and the heat radiation section 7 of the heat generation and absorption section 10, respectively. Has been done. Note that the heat insulating portion 37A and the heat absorbing portion 37B are made of a heat conductive ceramic, so that the electrical insulating portion 39 can be omitted.

The current from the DC power source 38 is applied to the N-type semiconductor 3
5N → P type semiconductor 35P → N type semiconductor 35N ... → P
2 flows like a type semiconductor 35P, heat is absorbed at the upper side of FIG. 2, and heat is discharged at the lower side. Due to this heat absorption and heat radiation, a predetermined temperature difference is generated between the heat absorbing portion 37B and the heat emitting portion 37A. Will be formed.

As described above, by using the Peltier element 9 in which one side serves as the heat radiating section 7 and the other side serves as the heat absorbing section 8 by causing a direct current to flow through the heat radiating and absorbing section 10, the Peltier element 9 is used in a stable state of evaporation and concentration. The structure is such that the temperature difference between the heat radiating portion 7 and the heat absorbing portion 8 is in the range of 10 to 50 ° C., preferably 10 to 40 ° C., and is configured for control. By using the Peltier element 9 and controlling the evaporation and concentration to a stable state, the power consumption is reduced and a high processing capacity is obtained.

As another embodiment, a DC power source 38
It is possible to set the DC voltage such that the temperature difference between the heat radiating part 7 and the heat absorbing part 8 is in the range of 10 to 50 ° C., preferably 10 to 40 ° C. A device for controlling the turning on / off of the switch is unnecessary, and the cost can be reduced.

Embodiment 2 FIG. 3 is a schematic view of an example of an embodiment of the present invention. This electronic cooling type evaporative concentrator is denoted by the same reference numeral as that of the embodiment of FIG. In this embodiment, the communication pipe 6 that constitutes the circulating air flow path A is only provided with the heat exchanger 22 that constitutes another cooling means B, and the heat exchanger 22 is such that the outside air and the circulating air flow mutually. A fan 23 is provided, which is a type in which each layer is partitioned by a partition plate in the form of a cross flow or oblique alternating current, each layer is laminated, and heat is exchanged by the partition plate. A method is provided in which the air in the circulating air passage A is directly air-cooled by the heat exchanger 22 by the outside air, and the gas discharged from the evaporative concentration section 1 by driving the heat exchanger 22 is cooled by heat exchange by the outside air. It is sent to the condenser 2. Further, only the fan 3 is provided in the communication pipe 11, and the remaining gas that has not condensed is driven by the fan 3 from the communication pipe 11 to evaporate and condense part 1.
Returned to.

An embodiment of the heat exchanger 22 is shown in FIGS. In the heat exchanger 22 shown in FIG. 4, the partition plate 261 has layers.
A corrugated plate 262 is inserted between the adjacent partition plates 261 so that the passage 2
64 and 265 are formed. In addition, the partition plate 261 is fixed to the outer periphery by a fixing member 263. The thickness of the partition plate 261 is, for example, 0. 1 mm, preferably 0.01 to 1 mm
And uses polypropylene material. 0.0lm
When the thickness is less than m, the heat exchange rate is increased, but the strength of the partition wall is reduced and it is difficult to manufacture. When the thickness is 1 mm or more, the structural strength increases, but the heat exchange rate decreases. Materials are polyethylene, polypropylene, polyvinyl chloride,
It uses at least one of polyvinylidene chloride, polyethylene terephthalate, and nylon, and has a high heat exchange effect and high manufacturability. The spacing between adjacent partition plates 261 is, for example, 1 mm, and the corrugated plate 262 has a wave pitch of, for example, 4 mm, which is effective as a rectifying and strength member.

In the heat exchanger 22 shown in FIG. 5, members that are mechanically and functionally the same as those shown in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted. In FIG. 5A, another heat exchanger 22 has a structure in which a spacer 631 is provided in the passage 264 between the partition plates 261 and 261 and there is no corrugated plate 262. Also, FIG.
In (b), another heat exchanger 22 has a structure in which both the passage 264 and the passage 265 have a spacer 631 between the partition plate 26l and the partition plate 261 and no corrugated plate 262. The heat exchanger 22 is not limited to this, and for example, the AC direction may be an oblique AC type.

Embodiment 3 FIG. 6 is a schematic view of an example of an embodiment of the present invention. This electronic cooling type evaporative concentrator is denoted by the same reference numeral as that of the embodiment of FIG. In this embodiment, a part 2b of the cooling / condensing section 2 is extended to above the evaporative concentrating section 1, and the circulating air blowing path A
The communication pipe 6 constituting the above is connected to a part 2b of the cooling condenser unit 2. A part 2b of the cooling / condensing unit 2 is formed of a SUS plate, performs natural outside air heat exchange by the SUS plate, and cools the circulating air in the cooling / condensing unit 2 by a cooling means B different from the heat radiating / absorbing unit 10. The gas emitted from the evaporative concentration section 1 is cooled by the outside air and sent to the cooling condensing section 2. Further, the communication pipe 11 is only provided with the fan 3, and the remaining gas that has not condensed is the communication pipe 1
It is returned from 1 to the evaporative concentration section 1 by driving the fan 3.

Fourth Embodiment FIG. 7 is a schematic view of an example of the embodiment of the present invention. This electronic cooling type evaporative concentrator is denoted by the same reference numeral as that of the embodiment of FIG. In the present embodiment, the cooling heat generated from the heat absorbing portion 41 of the heat radiating heat absorbing portion 40 different from the heat radiating heat absorbing portion 10 as the different cooling means B in the communication pipe 6 forming the circulation air flow path A is radiated. The part 42 uses a method of air cooling with outside air.

That is, the communication pipe 6 is provided with the housing 43. Inside the housing 43, two chambers, a condensing chamber 45 and an outside air chamber 46, are formed by the heat radiating and absorbing portion 40 having the Peltier element 44, and the condensing chamber 45 has a communicating pipe 6
To the outside air chamber 46, and the fan 47 and the outside air communication port 4 are connected to the outside air chamber 46.
3a is open. The heat radiating / absorbing part 40 is the heat radiating part 4
2 on the outside air chamber side and the heat absorbing portion 41 on the condensing chamber side. The heat radiating portion 42 is provided with heat radiating fins 48.
1, a condensing fin 49 is provided. Peltier element 4
The heat radiating and absorbing section 40 having the heat radiating and absorbing section 1 has the heat radiating and absorbing section 1 shown in FIG.
Since the configuration is the same as that of 0, detailed description will be omitted.

Embodiment 5 FIG. 8 is a schematic view of an example of an embodiment of the present invention. This electronic cooling type evaporative concentrator is denoted by the same reference numeral as that of the embodiment of FIG. In this embodiment, a method of indirectly cooling the air in the circulating air blowing path A by the outside air with a heat exchanger 51 having a heat pipe 50 as another cooling means B for the communication pipe 6 constituting the circulating air blowing path A. Is used.

That is, the communication pipe 6 is provided with the housing 52. In the housing 52, two chambers, a condensing chamber 45 and an outside air chamber 46, are formed by a partition wall 53 formed of a heat insulating plate, and the communicating pipe 6 communicates with the condensing chamber 45.
A fan 47 and an outside air communication port 52a are opened in the outside air chamber 46. In the partition wall 53, a plurality of heat pipes 50 are provided across the condensing chamber 45 and the outside air chamber 46. The heat pipe 50 is made of, for example, aluminum, stainless steel,
Wick material made of glass fiber or net-like thin copper wire is placed inside the pipe of copper, etc., the pressure inside is reduced, and Freon,
The heat pipe 50 is a device that performs heat transfer by transferring vapor of a heat medium such as ammonia and water and transferring latent heat of vaporization.
As a result, the temperature of the condensation chamber 45 decreases.

Sixth Embodiment FIG. 9 is a schematic view of an example of the embodiment of the present invention. This electronic cooling type evaporative concentrator is denoted by the same reference numeral as that of the embodiment of FIG. Another cooling means B of this embodiment has a structure in which the cooling capacity can be adjusted, and the temperature detecting means is installed at five locations. The first temperature detecting means C1 is a liquid temperature detecting means for detecting the temperature of the evaporative concentration section 1, is provided in the evaporative concentration section 1 through the opening 1a on the communication pipe 3 side, and is provided in the evaporative concentration section 1. Detect the liquid temperature. The second temperature detecting means C2 is a gas temperature detecting means for detecting the temperature of the circulation air passage A, is provided in the communication pipe 6, and measures the temperature of the steam passing through the communication pipe 6. The third temperature detecting means C3 is a heat radiating section temperature detecting means for detecting the temperature of the heat radiating section 7, is provided near the heat radiating section, and detects the temperature of the heat radiating section 7. The fourth temperature detecting means C4 is an endothermic temperature detecting means for detecting the temperature of the endothermic portion 8,
And detects the temperature of the heat absorbing portion 8. The fifth temperature detecting means C5 is a cooling / condensing section temperature detecting means for detecting the temperature of the cooling / condensing section 2, is provided in the cooling / condensing section 2, and detects the temperature in the cooling / condensing section 2.

The temperature detection results of these temperature detection means are sent to the control section D, and the control section D controls the cooling capacity of another cooling means B based on the temperature detection results.
Even if the environmental temperature changes, more stable processing capacity can be obtained.

The temperature detecting means is composed of, for example, a thermostat or thermistor. Further, each temperature detecting means may be provided only in one of the above five places.

Further, another cooling means B can be provided in the circulating air flow path A reaching the evaporative concentration section 1 after passing through the cooling condensation section 2 as shown by the two-dot chain line in FIG. The concentration efficiency can be further increased by cooling in the circulation air flow path A reaching the evaporative concentration section 1 after passing through. Circulation air flow path A reaching the evaporative concentration section 1 after passing through the cooling condensation section 2
Similarly, another cooling means B provided in the above-mentioned structure has a structure in which the cooling capacity can be adjusted, and control can be performed based on the temperature detection result by the control unit D, and a more stable process can be performed even if the environmental temperature changes. Ability is obtained.

Further, the control section D controls the power supply circuit F at a certain temperature or higher based on the temperature detection result from the temperature detecting means C3 provided in the vicinity of the heat radiation section of the heat radiation and heat absorption section 10. Stop energizing. In this way, it is possible to improve the durability by preventing the temperature of the heat radiation / absorption part 10 from rising above a certain level.

Embodiment 7 FIG. 10 is a schematic view of an example of an embodiment of the present invention. FIG. 10 (a) is a front view, FIG. 10 (b) is a plan view,
FIG.10 (c) is a side view. In the apparatus body 60 of this electronic cooling type evaporative concentrator, a heat radiating and absorbing part 10 having a Peltier element 9, an evaporative concentrating part 1 for evaporating and concentrating a liquid, and an evaporating vapor for condensing by cooling. A cooling / condensing unit 2 to be performed, a communication pipe 6 that connects the evaporative concentration unit 1 and the cooling condensation unit 2 to each other, and a communication pipe 11 that connects the cooling condensation unit 2 and the evaporation concentration unit 1 are arranged. The communication pipe 11 is provided with a fan 3 as a blowing unit that blows air to the liquid surface in the evaporative concentration unit 1.

In the apparatus main body 60, the gas containing the vapor generated in the evaporative concentration section 1 is sent to the cooling / condensing section 2 through the communication tube 6, and the gas passing through the cooling / condensing section 2 is connected to the communication tube 11.
Thus, a circulation air flow path A returning to the evaporative concentration section 1 is provided.

The heat radiating and absorbing portion 10 is arranged with the heat radiating portion 7 on the upper side and the heat absorbing portion 8 on the lower side. The heat radiating and absorbing portion 10 is sandwiched so that the evaporative concentrating portion 1 is in contact with the heat radiating portion 7. It is arranged on the upper side of 10, and the cooling condenser section 2 is arranged on the lower side of the heat radiating and absorbing section 10 so as to be in contact with the heat absorbing section 8.

The cooling / condensing unit 2 has a high temperature gas tank 200 and a layer 201 for cooling and returning the gas to the fan 3. The high temperature gas tank 200 extends to the upper part of the apparatus body 60 and communicates with a layer 202 for sending vapor. Then, the high temperature steam from the communication pipe 6 is introduced into the layer 202 that sends the steam. Cool and blow gas 3
The layer 201 for returning gas to the evaporative concentration section 1 communicates with the layer 203 for putting gas in the fan 3, and the layer 203 for putting gas in the fan 3 is located above the apparatus main body 60.

The evaporative concentration section 1 is composed of a bag and has a communication pipe 6
It has a mouth portion 1a for discharging gas to and a mouth portion 1b for blowing air from the fan 3 arranged in the communication pipe 11, and the central portion is supported by the support plate 300. The bag forming the evaporative concentration unit 1 is made of foldable soft plastic, and has a screw cap 1a of the mouth portion 1a and the mouth portion 1b.
The door 6 provided on the apparatus main body 60 by removing 1, 1b1
1 can be opened and taken out from the take-out port 62.

A fan 70 is provided at the bottom of the apparatus main body 60 and sends air to the outside air introduction tank 71. Outside air introduction tank 71
Are arranged in contact with the high temperature gas tank 200. The high temperature gas tank 200 is formed by the heat exchange plate 72, and is configured to send air from the lower side to the upper side of the apparatus main body 60 to cool the steam flowing through the high temperature gas tank 200. As the heat exchange plate 72, a metal thin plate having good heat conductivity, for example, a thin plate of aluminum, stainless steel or the like is used. An electric equipment part 75, a pump 76, and the like are arranged in a space 63 formed inside the apparatus body 60, and an electric equipment part 77 is arranged in an upper space 64. Space 6 on top of the device body 60
The electric component section 77 arranged in 4 is, for example, a power source of the heat radiating and heat absorbing section 1, an operating power source, a drive source of the fan 3 which is a blowing unit, and a part of the heat radiated from these is blown to the evaporative concentration section 1. The gas has a structure for heating the gas, and by utilizing at least a part of heat radiation from the power source of the heat radiation / absorption unit 1, the operation power source, and the drive source of the blowing unit, the concentration efficiency can be further increased.

Embodiment 8 FIG. 11 is a schematic view of an example of an embodiment of the present invention. FIG. 11 (a) is a front view, FIG. 11 (b) is a plan view,
FIG. 11C is a side view. The electronic cooling type evaporative concentrator having the same structure as that of FIG. 10 is denoted by the same reference numeral and its description is omitted. In the apparatus body 60 of this electronic cooling type evaporative concentration apparatus, the heat radiation and heat absorption section 10 is arranged with the heat radiation section 7 facing upward and the heat absorption section 8 facing downward. 1 is arranged on the upper side of the heat radiating and absorbing section 10 so as to contact the heat radiating section 7, and the cooling condenser section 2 is arranged on the lower side of the heat radiating and absorbing section 10 so as to contact the heat absorbing section 8.

The cooling / condensing section 2 has a high temperature gas tank 200 and a layer 201 for returning the gas to the fan 3 by cooling, and the high temperature gas tank 200 is located in the lower part of the apparatus main body 60, and the evaporative concentration section 1 is provided.
The high temperature evaporative concentration section 1 is introduced from the through the communication pipe 6. The layer 201 that cools and returns the gas to the fan 3 extends from the high temperature gas tank 200 to the upper portion of the apparatus body 60.

An air cooling unit 81 equipped with a fan 80 is provided under the apparatus main body 60, and the high temperature gas tank 20 of the cooling condenser section 2 is provided.
It is provided to cool 0. Layer 20 that cools the evaporative concentration section 1 inside the apparatus body 60 and returns the gas to the fan 3
In the space 83 between the two, the electrical component 85 and the pump 86
Etc. are arranged. In the electric component part 85, for example, a part of the heat radiation from the power source of the heat radiation / absorption part 1, the operation power source, and the drive source of the fan 3 which is a blowing means is blown to the target liquid of the evaporation concentration part 1 and the evaporation concentration part 1. The gas has a structure for heating the gas, and by utilizing at least a part of heat radiation from the power source of the heat radiation / absorption unit 1, the operation power source, and the drive source of the blowing unit, the concentration efficiency can be further increased.

[0048]

As described above, according to the first aspect of the invention, the vapor is cooled by auxiliary cooling by means of separate cooling means in addition to the heat radiating and absorbing portion, so that the evaporation heating and cooling are balanced and adjusted. This eliminates the need for a structure for discharging a part of heat from the heat radiating portion, and the electronic cooling type evaporative concentrator is small in size, low in cost, consumes less power, and has a high concentration efficiency and a simple structure. Also, the cooling capacity of another cooling means can be adjusted.
Therefore, stable processing capacity can be obtained even when the environmental temperature changes.
You can

[0049]

According to the second aspect of the present invention, another cooling means has a simple structure, is a preferable cooling method with good cooling efficiency, and can enhance the concentration efficiency.

According to the third aspect of the present invention, since the control for adjusting the cooling capacity of another cooling means is performed based on the temperature detection result, more stable processing capacity can be obtained even if the environmental temperature changes. .

According to the fourth aspect of the invention, since the cooling air is cooled in the circulating air flow path to the evaporative concentration section after passing through the cooling condensation section,
The concentration efficiency can be increased.

According to the fifth aspect of the present invention, since the temperature of the heat radiating and absorbing portion is not raised above a certain level, the durability of the heat radiating and absorbing portion can be improved.

According to the sixth aspect of the present invention, the concentration efficiency can be further increased by utilizing the heat radiation from at least a part of the power source of the heat radiating and absorbing portion, the operating power source, and the driving source of the blowing means.

According to the seventh aspect of the invention, since the gas entering the evaporative concentration section and the gas after it undergoes heat exchange, the liquid can be evaporated with high efficiency and the concentration efficiency is improved.

According to the eighth aspect of the present invention, a Peltier element is used and a stable state of evaporative concentration is obtained by controlling the temperature, so that the power consumption can be reduced and a high processing capacity can be obtained.

In the invention according to claim 9 , since the DC voltage is set so that the temperature difference between the heat radiating part and the heat absorbing part is in the range of 10 to 50 ° C., a device for controlling ON / OFF of the DC power supply is unnecessary. Therefore, cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of an embodiment of an electronic cooling type evaporative concentrator of the present invention.

FIG. 2 is a diagram showing a configuration of a Peltier device.

FIG. 3 is a schematic view showing an example of an embodiment of an electronic cooling type evaporative concentrator of the present invention.

FIG. 4 is a schematic configuration diagram of a heat exchanger.

FIG. 5 is a schematic configuration diagram of a heat exchanger according to another embodiment.

FIG. 6 is a schematic view showing an example of an embodiment of an electronic cooling type evaporative concentration apparatus of the present invention.

FIG. 7 is a schematic view showing an example of an embodiment of an electronic cooling type evaporative concentrator of the present invention.

FIG. 8 is a schematic view showing an example of an embodiment of an electronic cooling type evaporative concentrator of the present invention.

FIG. 9 is a schematic view showing an example of an embodiment of an electronic cooling type evaporative concentrator of the present invention.

FIG. 10 is a schematic view showing an example of an embodiment of an electronic cooling type evaporative concentrator of the present invention.

FIG. 11 is a schematic view showing an example of an embodiment of an electronic cooling type evaporative concentrator of the present invention.

[Explanation of symbols]

1 Evaporative concentration section 2 Cooling condensing section 7 Heat sink 8 Heat absorption part 10 Heat dissipation and heat absorption section A circulating air flow path B Cooling means other than the heat radiation and heat absorption section 10

Continued Front Page (72) Inventor Keiichi Nakajima 1-1 Tanabeshinden, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd. Electric Machinery Co., Ltd. (72) Inventor Masahiro Osawa 1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd. (56) Reference JP-A-7-209841 (JP, A) JP-A-8- 267050 (JP, A) JP-A-8-57202 (JP, A) JP-A-9-314126 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) C02F 1/04 F25B 21 / 02

Claims (9)

(57) [Claims] Claim: What is claimed is: 1. An evaporation method for evaporating and concentrating a liquid by radiating heat from a heat radiating and absorbing section having a heat radiating section for radiating heat by passing an electric current and a heat absorbing section for absorbing heat, and radiating heat from the heat radiating section of the heat radiating and absorbing section. In an electronic cooling type evaporative concentrator having a concentrating part and a cooling condensing part that cools and condenses the gas from the evaporative condensing part by absorbing the heat of the heat radiating and absorbing part. A gas containing the generated vapor of is blown to the cooling / condensing unit, and a gas that has passed through the cooling / condensing unit is returned to the evaporation / concentrating unit. Cooling the circulating air by cooling means other than the heat radiation and heat absorption section
And, an electronic cooling system evaporative concentration apparatus, wherein the cooling capacity of said further cooling means is adjustable. 2. The electronic cooling type evaporative concentrator according to claim 1, wherein the other cooling means is one of the following A, B, and C types. A: Cooling heat generated from a heat absorbing part of a heat radiating and absorbing part different from the heat radiating and absorbing part, and the heat radiating part is air-cooled by outside air B: A method of directly cooling the air in the circulation blower path by a heat exchanger by outside air C: A method of indirectly cooling the air in the circulation air flow path by the outside air with a heat exchanger having a heat pipe Wherein the evaporation unit, the temperature sensing means in at least one place of the cooling and condensing section and the circulating air passage provided, to perform a control for adjusting the cooling capacity of the further cooling means by that temperature detection result An electronic cooling type evaporative concentrator according to claim 1 or 2 . Wherein said further cooling means according to any one of claims 1 to 3, characterized in that provided in the circulating air passage extending the cooling condensing unit to the evaporation portion after passing Electronic cooling evaporative concentrator. 5. providing the temperature detecting means to the heat radiating portion near the heat radiating heat absorption part, to any one of claims 1 to 4, characterized in that stopping the energization of the heat radiating heat absorption unit at a constant temperature or more The electronic cooling type evaporative concentrator described. 6. The liquid targeted for the evaporative concentration section and / or the gas blown to the evaporative concentration section, at least part of the heat radiation from the power source of the heat radiating and absorbing section, the operation power source, and the driving source of the blowing unit. The electronic cooling type evaporative concentrator according to any one of claims 1 to 5 , characterized in that it has a structure for heating. 7. The electronic cooling system evaporator according to any one of claims 1 to 6, characterized in that the gas after it leaves the gas entering the evaporative concentration portion is provided heat exchange structure for heat exchange Concentrator. 8. A Peltier element having a heat radiating portion on one side and a heat absorbing portion on the opposite side by applying a direct current to the heat radiating and heat absorbing portion is used. electronic cooling type evaporative concentration apparatus according to any one of claims 1 to 7 but is characterized by being configured to be in the range of 10 to 50 ° C.. 9. The method of claim 8, wherein the well without DC power supply On / Off control, set to a DC voltage as the temperature difference between the heat radiating portion and the heat absorbing portion is in the range of 10 to 50 ° C.
The electronic cooling type evaporative concentrator described.