JP5098037B2 - Thermostatic water tank cooling device and fan cooler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling device of a constant-temperature water tank compact and easily installed. <P>SOLUTION: This cooling device 20 for cooling the liquid in the constant-temperature water tank 10, comprises a submersible pump 22 to be disposed in the constant-temperature water tank 10 for delivering the liquid in the constant-temperature water tank 10; a fan cooler 24 comprising an air distribution fan 36 and a heat exchanger 34, and cooling the liquid delivered from the submersible pump 22; a first pipe conduit 28 disposed between the submersible pump 22 and the heat exchanger 34 for circulating the liquid from the submersible pump 22 to the heat exchanger 34; a second pipe conduit 30 for returning the liquid cooled by the heat exchanger 34 to the constant-temperature water tank 10; and a main switch 38 disposed on the fan cooler 24 and simultaneously charging electric source to the submersible pump 22 and the air distribution fan 36. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a cooling device and a fan cooler for cooling a liquid in a constant temperature bath.

  Conventionally, a constant temperature water tank used for experiments and analysis is used with a heating device using a heater in order to keep the temperature of the liquid in the water tank constant (for example, Patent Document 1). reference).

  In addition, the temperature of the liquid in the thermostatic water tank may rise above a desired temperature, and it may be necessary to lower the temperature of the liquid. In such a case, unless a cooling device is provided, it is necessary to wait for the temperature of the liquid to drop naturally or to manually replace the liquid inside.

  Therefore, a configuration in which a chiller (refrigerator) is used as a cooling device for cooling the liquid in the constant temperature water tank and the refrigerator is provided in the constant temperature water tank has been known (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 9-14753 JP-A-6-312176

As described in Patent Document 2 described above, if a refrigerator is used for cooling the liquid in the thermostatic water tank, the entire apparatus becomes too large, and installation and connection are troublesome and costly. However, there is a problem that it is disadvantageous.
In particular, the constant-temperature water tank used for experiments and analysis is installed on a laboratory table, etc., and is relatively small, so it can be easily installed with a compact configuration as a cooling device for the constant-temperature water tank. Is desired.

  That is, the present invention is made to solve the above-mentioned problems, and an object of the present invention is to provide a constant temperature water tank cooling device that is small in size and can be easily installed.

In order to achieve the above object, the present invention comprises the following arrangement.
That is, according to the cooling device of the constant temperature water tank of the present invention, it is a cooling device for cooling the liquid in the constant temperature water tank, can be arranged in the constant temperature water tank, and an underwater pump that sends out the liquid in the constant temperature water tank; A fan cooler that includes a blower fan and a heat exchanger, cools the liquid sent from the submersible pump, and is piped between the submersible pump and the heat exchanger, and is configured to circulate the liquid from the submersible pump to the heat exchanger. A main line for supplying power to the submersible pump and the blower fan at the same time, a second line for returning the liquid cooled by the heat exchanger to the constant temperature water tank, a fan cooler, and a power source A connector terminal provided at a position on the rear stage side of the main switch in the line, which can be connected externally, and can be driven in conjunction with an external device externally connected from the connector terminal. It is characterized by a door.
By adopting this configuration, the user simply puts the submersible pump into the thermostatic bath, turns on the main switch on the fan cooler, and sends the liquid in the thermostatic bath to the fan cooler with the submersible pump. The cooled liquid can be returned to the constant temperature water bath. Thus, according to the cooling device of the present invention, it can be easily installed, and the liquid in the thermostatic water tank can be cooled by an easy operation.

Moreover, the 1st connection part which connects the said 1st pipe line so that attachment or detachment is possible is provided in the said heat exchanger, and the 2nd which connects the said 2nd pipe line so that attachment or detachment is possible in the said heat exchanger. A connecting portion is provided, and at least one of the first connecting portion and the second connecting portion is disposed at a lower portion of the heat exchanger and connected to the first conduit or the second conduit. It is good also as the characteristic that it is provided inclining so that the connection edge part side to perform may be located below.
According to this configuration, after the cooling of the liquid in the constant temperature water tank is completed, the liquid sent from the constant temperature water tank into the heat exchanger flows out from the heat exchanger to the first pipe line or the second pipe line. The liquid can be prevented from remaining in the heat exchanger, and corrosion of the heat exchanger can be prevented.

The fan cooler according to the present invention is a fan cooler that is provided so as to be connectable to a submersible pump that sends out the liquid in the thermostatic water tank and cools the liquid sent out from the submersible pump, and includes a heat exchanger and a heat exchanger. The heat exchanger includes a first connecting portion that removably connects a first pipe that circulates liquid from the submersible pump to the heat exchanger, and a constant temperature from the heat exchanger. And a second connecting part for detachably connecting a second pipe for returning the cooled liquid to the water tank, and at least one of the first connecting part and the second connecting part is a heat A commercial power supply is provided for the submersible pump and the blower fan, which is disposed at a lower part of the exchanger and is inclined so that a connection end side connected to the first pipe line or the second pipe line is positioned below. Power line connected to AC100V A main switch for simultaneous connection is provided, and is provided with a connector terminal that can be connected externally at a position on the power supply line on the rear side of the main switch, and interlocks with an external device externally connected from the connector terminal And can be driven .
By adopting this configuration, after cooling of the liquid in the constant temperature water tank is completed, the liquid sent from the constant temperature water tank into the heat exchanger flows out from the heat exchanger to the first pipe line or the second pipe line. Therefore, the liquid can be prevented from remaining in the heat exchanger, and corrosion of the heat exchanger can be prevented.

According to the cooling device of the constant temperature water tank concerning the present invention, it can install simply and can cool the liquid in a constant temperature water tank by easy operation.
Moreover, according to the fan cooler concerning this invention, it can prevent that a liquid remains in a heat exchanger and can prevent the corrosion of a heat exchanger, etc.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows a schematic block diagram of a cooling device for a constant temperature water tank, and FIG. 2 shows a specific external configuration of the cooling water tank for the constant temperature water tank.
The cooling device 20 is a device for cooling the liquid in the constant temperature water tank 10, is provided separately from the constant temperature water tank 10, and can be freely attached to and detached from the constant temperature water tank 10.

The constant temperature water tank 10 holds the liquid contained therein at a constant temperature for use in experiments and analysis. In the present embodiment, water is assumed as the liquid stored in the constant temperature water tank 10. Moreover, the constant temperature water tank 10 demonstrated here is installed on desks, such as a test bench, in order to immerse experimental equipment, such as a test tube, in the water hold | maintained at fixed temperature.
However, the liquid in the constant temperature water tank 10 is not limited to water.

The constant temperature water tank 10 is provided with a heating device 25. The heating device 25 is provided so that the heater 26 enters the water, and is controlled so as to heat the water in the water tank by the heater 26.
The heating device 25 may be provided integrally with the constant temperature water tank 10 or may be provided separately from the constant temperature water tank 10.
Note that the heating device 25 does not constitute the cooling device 20 of the present invention, but is attached to the constant temperature water tank 10, and the configuration of the cooling device 20 is established even if the heating device 25 does not exist. Therefore, the cooling device 20 of the present invention can be applied to the constant temperature water tank 10 in which the heating device 25 is not provided.

The cooling device 20 for cooling the water in the thermostatic water tank 10 includes a submersible pump 22 and a fan cooler 24. The submersible pump 22 is supplied into the constant temperature water tank 10 and has a function of pumping water in the constant temperature water tank 10.
The fan cooler 24 has a function of cooling the water in the constant temperature water tank 10 that is pumped by the submersible pump 22, and is installed at an arbitrary location outside the constant temperature water tank 10.

Between the submersible pump 22 and the fan cooler 24, a first conduit 28 and a power cable 32 are disposed.
The first conduit 28 is composed of a synthetic resin tube or the like, and the water in the constant temperature water tank 10 is circulated to the fan cooler 24 by the submersible pump 22.
A second conduit 30 is provided from the fan cooler 24 to the constant temperature water tank 10. The second conduit 30 circulates when the water cooled by the fan cooler 24 returns to the constant temperature water tank 10, and one end side is connected to the fan cooler 24 and the other end side is not connected anywhere. Instead, it is configured to simply enter the constant temperature water tank 10. The second conduit 30 is also composed of a synthetic resin tube or the like.

The fan cooler 24 is configured such that a heat exchanger 34 and a blower fan 36 that blows air to the heat exchanger 34 are provided in an integrated housing 37.
The main switch 38 provided in the fan cooler 24 is provided so that the power supply of the blower fan 36 and the submersible pump 22 can be simultaneously turned on and off.

The external structure and internal structure of the fan cooler will be further described with reference to FIGS.
The fan cooler 24 is a cooler having a heat exchanger 34 and a blower fan 36 therein, and cools water flowing through the heat exchanger 34. The heat exchanger 34 is disposed on the front side of the fan cooler 24, and the blower fan 36 is disposed on the back side. When the blower fan 36 is rotationally driven, heat is exchanged with fins (described later) of the heat exchanger 34 when air flows from the front side of the fan cooler 24 and passes through the heat exchanger 34.

The housing 37 has a shape such that the front panel 40 and the back panel 41 are parallel and inclined from the front side to the back side.
A connection connector 42 for connecting the first conduit 28 to the heat exchanger 34 is provided on the back side of the fan cooler 24. The connection connector 42 is a connection part for inputting the water in the constant temperature water tank 10 to the heat exchanger 34. As a connection method between the connection connector 42 and the first pipe line 28, a screw groove is formed on the outer peripheral surface of the connection side end part of the connection connector 42, and the end part of the first pipe line 28 is connected by a screwing method. You may make it do, and you may employ | adopt another system.

A connection connector 44 for connecting the second conduit 30 to the heat exchanger 34 is provided on the back side of the fan cooler 24. The connection connector 44 is a connection part for discharging water cooled by the heat exchanger 34 from the heat exchanger 34. As a connection method between the connection connector 44 and the second pipe line 30, a thread groove is formed on the outer peripheral surface of the connection side end of the connection connector 44, and the end part of the second pipe line 30 is connected by screwing. You may make it do, and you may employ | adopt another system.
In the present embodiment, the discharge-side connection connector 44 is disposed above the input-side connection connector 42. However, the positional relationship between the input-side and discharge-side connection connectors is not particularly limited. Also good.

Both the connection connectors 42 and 44 are inclined and provided such that the connection side end (back side) is positioned below.
As described above, the connection side end portions of the connection connectors 42 and 44 are inclined downward toward the back surface side, so that the water circulating in the heat exchanger 34 is heated after the operation of the cooling device 20 is completed. It can discharge without remaining in the exchanger 34, and corrosion of the heat exchanger can be prevented. The reason why the connecting connectors 42 and 44 are inclined so that the back side faces downward is to prevent water from remaining in the heat exchanger 34 as described above. It suffices that the back side of the connection connector 42 on the input side located at a position is inclined so as to face downward.

Next, the structure of a heat exchanger is demonstrated based on FIG.
The heat exchanger 34 includes a fin laminate 35 configured by laminating a plurality of metal fins (not shown), and a heat exchange pipe 33 for circulating water to be cooled between the fin laminates 35. Have. A plurality of insertion holes (not shown) through which the heat exchange pipe 33 is inserted are formed in the fin laminated body 35, and the linear heat exchange pipe 33 is inserted into the insertion hole.
In addition, a U-shaped tube 39 for connecting to the end of the adjacent heat exchange pipe 33 is provided at the end of each heat exchange pipe 33 inserted into the fin laminate 35. 33 is connected to meander to the fin laminate 35.

Next, FIG. 8 shows a wiring diagram of the electrical system of the cooling device.
As a power source for the cooling device 20, a commercial power source AC100V is used. The motor M2 of the blower fan 36 and the motor M1 of the submersible pump 22 are connected in parallel to the power line 48, and a main switch 38 is provided on the power line 48. For this reason, when the main switch 38 is turned on, predetermined power is simultaneously supplied to the motor M2 of the blower fan 36 and the motor M1 of the submersible pump 22, and the motor M2 of the blower fan 36 and the motor M1 of the submersible pump 22 are simultaneously supplied. Start driving. As described above, since the driving of the blower fan 36 and the submersible pump 22 can be started simultaneously by one operation, the operation is easy and power is supplied to either the blower fan 36 or the submersible pump 22. It is possible to prevent accidents such as forgetting to turn on the other power supply or turning off only one power supply and forgetting to turn off the other power supply.

  The main switch 38 is provided with a lamp 50 that is lit when the power is turned on. The lamp 50 is built in the main switch 38 and can be provided so that the entire main switch 38 shines when the power is turned on.

A connector terminal 51 that can be externally connected to the two power lines 48 is provided at a position on the rear stage side of the main switch 38 of the power line 48. The connector terminal 51 is normally connected with a short-circuit connector 52. When the short-circuit connector 52 is connected, the cooling device 20 operates alone.
For example, by connecting the communication cable 54 to the connector terminal 51 and connecting the communication cable 54 to the heating device 25, the heating device 25 can control on / off of the power supply of the cooling device 20. That is, in the heating device 25, a relay (not shown) for turning on and off the conduction of the communication cable 54 is provided. When the relay is on, the cooling device 20 is powered on and the relay is off. Sometimes, the power of the cooling device 20 can be prevented from being turned on, and the operation of the cooling device 20 can be controlled by turning on and off the relay.

Thus, by providing the connector terminal 51 for external connection, it is possible to control the on / off of the power supply of the cooling device 20 from the external device, so that the cooling device 20 and the external device are driven in conjunction with each other. Can do.
Note that the connection destination of the connector terminal 51 is not limited to the heating device 25 as described above, and may be another device.

Next, FIG. 9 shows a schematic configuration of the submersible pump, and the structure of the submersible pump will be described.
The submersible pump 22 has in the housing 55 an impeller 57 that is rotationally driven to pump water and a motor 58 that rotationally drives the impeller 57.
The housing 55 includes a first housing portion 55a provided in a watertight manner and a second housing portion 55b through which water flows. The motor 58 is provided in the first housing portion 55a, and the impeller 57 attached to the tip of the rotating shaft 63 of the motor 58 protrudes from the first housing portion 55a and is in the second housing portion 55b. It is provided so that it may be located in. The rotating shaft 63 of the motor 58 is held by a mechanical seal or the like, and is provided so that water does not flow into the first housing portion 55a.

On the wall surface of the second housing 55b, a slit 59 for inflow of water is formed. When the impeller 57 rotates, the water in the thermostatic water tank 10 flows into the second casing 55b from the slit 59 and is sent out to the pressure feeding pipe 60 provided above the second casing 55b.
The first pipe 28 is connected to the pressure feeding pipe 60, and the water fed into the second casing 55b is pressure fed to the fan cooler 24.

On the bottom surface of the housing 55 of the submersible pump 22, an adsorption plate 62 for fixing the bottom surface of the thermostatic water tank 10 and the submersible pump 22 is provided.
Further, a filter for removing dust and the like in the water is provided in the second housing 55b, but is not shown here.

Hereinafter, the operation and usage of the cooling device will be described.
The user inputs the submersible pump 22 into the constant temperature water tank 10 to be cooled. The fan cooler 24 is appropriately arranged at a predetermined position such as on the experimental table.
Since the suction plate 62 is provided on the bottom surface of the submersible pump 22, the user simply puts the submersible pump 22 into the constant temperature water tank 10, and the suction plate 62 of the submersible pump 22 is adsorbed to the bottom surface of the constant temperature water tank 10, The pump 22 is fixed.

  When the user turns on the main switch 38, the blower fan 36 in the fan cooler 24 and the impeller 57 in the submersible pump 22 start to drive simultaneously, and the water in the constant temperature water tank 10 flows through the first conduit 28. And fed into the fan cooler 24 by pressure.

In the fan cooler 24, the water sent from the thermostatic water tank 10 circulates through the heat exchanger 34, is heat-exchanged by the wind blown by the blower fan 36, and is cooled to at least about room temperature.
The cooled water flows through the second conduit 30 and is returned to the constant temperature water tank 10.
Thus, the water in the constant temperature water tank 10 can be lowered to room temperature by driving the cooling device 20. Moreover, even if the water in the constant temperature water tank 10 is about 1 degree higher than room temperature, it becomes possible to cool the water in the constant temperature water tank 10 to room temperature by cooling using the fan cooler 24.

  While the present invention has been described above with reference to a preferred embodiment, the present invention is not limited to this embodiment, and it goes without saying that many modifications can be made without departing from the spirit of the invention. .

It is explanatory drawing which shows schematic structure of the whole cooling device. It is a front view of the cooling device set to the constant temperature water tank. It is a front view of a cooling device. It is a rear view of a fan cooler. It is a side view which shows the external appearance of a fan cooler. It is a side view which shows the internal structure of a fan cooler. It is a front view of a heat exchanger. It is a wiring diagram of the electric system of a cooling device. It is explanatory drawing which shows schematic structure of a submersible pump.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Constant temperature water tank 20 Cooling device 22 Submersible pump 24 Fan cooler 25 Heating device 26 Heater 28 1st pipe line 30 2nd pipe line 32 Power cable 33 Heat exchange pipe 34 Heat exchanger 35 Fin laminated body 36 Blower fan 37 Enclosure Body 38 Main switch 39 U-shaped tube 40 Front panel 41 Rear panel 42 Connector 44 Connector 44 Power line 50 Lamp 51 Connector terminal 52 Short-circuit connector 54 Communication cable 55 Housing 57 Impeller 58 Motor 59 Slit 60 Pressure feed tube 62 Suction plate 63 Rotating shaft M1 motor M2 motor

Claims (3)

A cooling device for cooling the liquid in the thermostatic water tank,
A submersible pump that can be placed in a constant temperature water tank and sends out liquid in the constant temperature water tank;
A fan cooler that includes a blower fan and a heat exchanger and cools the liquid sent from the submersible pump;
A first pipe that is piped between the submersible pump and the heat exchanger and circulates the liquid from the submersible pump to the heat exchanger;
A second conduit for returning the liquid cooled by the heat exchanger to the constant temperature water bath;
A main switch provided in the fan cooler for simultaneously turning on the power to the submersible pump and the blower fan ;
Provided at a location on the rear stage side of the main switch in the power line, and a connector terminal that can be connected externally,
A cooling device for a constant temperature water tank , which can be driven in conjunction with an external device externally connected from the connector terminal . The heat exchanger is provided with a first connection part that detachably connects the first pipe line,
The heat exchanger is provided with a second connection part for detachably connecting the second pipe line,
At least one of the first connection part and the second connection part is arranged at the lower part of the heat exchanger, and the connection end part side connected to the first pipe line or the second pipe line is below The apparatus for cooling a constant temperature water tank according to claim 1, wherein the apparatus is provided so as to be inclined. A fan cooler that is provided so as to be connectable to a submersible pump that sends out liquid in a thermostatic water tank, and that cools the liquid sent from the submersible pump,
A heat exchanger and a blower fan for blowing air to the heat exchanger;
In the heat exchanger, a first connection part that removably connects a first pipe that circulates the liquid from the submersible pump to the heat exchanger, and a second that returns the cooled liquid from the heat exchanger to the constant temperature water bath. And a second connection part for detachably connecting the pipe line,
At least one of the first connection part and the second connection part is disposed at the lower part of the heat exchanger and the connection end side to be connected to the first pipe line or the second pipe line is downward. Provided so as to be located ,
For the submersible pump and the blower fan, a main switch for simultaneously connecting the power line connected to the commercial power supply AC100V is provided,
Provided at a location on the rear stage side of the main switch in the power line, and a connector terminal that can be connected externally,
A fan cooler , which can be driven in conjunction with an external device externally connected from the connector terminal .

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