JPH0239189Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heating and cooling device that can be applied to a device that stores a container containing an object or a container that receives an object, and that heats and cools the stored container.

Figures 1 and 2 show an example of a conventional heating/cooling device, in which a heat exchanger 3 is provided inside the heating/cooling device main body 1, and the air inside the device main body 1 is heated or cooled to be heated or cooled by natural convection. Heat is transferred to the heated and cooled object 2. Note that 4 in FIG. 1 is a nozzle for receiving and discharging heat medium and refrigerant, and 5 is a conduit for discharging or receiving process fluid to the object 2 to be heated and cooled.

However, in the apparatus shown in Figure 1, the overall transfer coefficient was several Kcal/m ² ·hr°C, and the time required for heating or cooling was more than ten hours. Further, when a natural convection method is adopted as shown in Fig. 1, the heat exchanger 3 for heating and cooling occupies a wide area so as to completely cover the object 2 to be heated and cooled, and is therefore made large. The need arose.

The present invention was proposed in order to eliminate the above-mentioned conventional drawbacks, and in an apparatus for heating and cooling a workpiece, a heat exchanger for a heating medium and a heat exchanger for a refrigerant having the same cross-sectional shape are installed in the main body of the heating/cooling apparatus. Heat exchangers are connected in series, and a forced convection fan is installed on the outer frame of this heat exchanger to blow air through these heat exchangers, and the forced convection fan blows air through the heat exchangers in series. It is an object of the present invention to provide a heating and cooling device that is small and easy to control by providing a duct with an ejection hole that directly jets hot air or cold air in a parallel flow near the object to the object.

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 3 and 4 show embodiments of the present invention,
In the heating/cooling device main body 1, for the air flow path,
A heat exchanger 6 for a heat medium and a heat exchanger 7 for a refrigerant, which have the same cross-sectional shape of the heat exchanger framework, are connected in series to generate forced convection that blows air through these heat exchangers 6 and 7. A fan 8 is provided on the upper surface of the heat exchanger 6, and the hot air or cold air blown by the fan 8 is flowed in parallel from the lower surface of the heated or cooled object 2 toward the upper surface below the heated or cooled object 2. A duct 9 with an ejection hole is provided to eject water directly onto the object to be treated. In the figure, 5 is a conduit for delivering or receiving process fluid to the object to be heated and cooled 2, 10 is a heat medium receiving and receiving nozzle, and 11 is a refrigerant receiving and receiving nozzle.

Now, in the embodiment apparatus shown in FIGS. 3 and 4, heat is transferred by forced ventilation by a fan 8 to generate forced convection, and the heat transfer area of the refrigerant heat exchanger 7 is approximately 50 m ² , heat transfer area of heat exchanger 6 for heat medium approximately 20 m ² , ventilation volume approximately 3000 m ³ /
hr, by setting the fan power to 0.75KW to 2.2KW, the cooling time, which conventionally required several tens of hours, is reduced to approximately 1/3, and the heating time, which conventionally required approximately 10 hours, is reduced to 1/2 to 1/3. was completed.

As explained in detail above, the present invention circulates air using a forced convection fan that blows air through a heat exchanger for heat medium and refrigerant, and generates a parallel flow of hot or cold air obtained by the heat exchanger in the vicinity of the object to be treated. The device is equipped with a duct with an ejection hole that ejects air directly onto the material to be treated, and uses a forced ventilation system.The heat exchangers are compact because each heat exchanger forcibly exchanges heat with the circulating air. Therefore, it is possible to use a device with a large heat transfer area due to the fins. Furthermore, the time required for heating and cooling can be shortened, and the heating and cooling operations can be easily controlled. In this invention, the heat exchanger for heat medium and refrigerant are formed in the same cross-sectional shape, so
These can be provided on the same outer plate frame, and the heat exchanger can be configured compactly. Further, since the hot air or cold air is blown out in parallel flow from the duct with jet holes in the vicinity of the object to be processed, the object to be processed can be heated or cooled extremely efficiently. In addition, in this invention, the heat exchanger for the heating medium and the heat exchanger for the refrigerant are arranged inside the main body of the heating/cooling device, so that the duct is closer to the main body of the heating/cooling device than when one heat exchanger is installed outside the main body of the device. Since the heating/cooling device does not pass through the end plate, the structure of the heating/cooling device body is significantly simplified, and manufacturing costs can be significantly reduced. In addition, even if the installation position of the heating/cooling device of the present invention needs to be moved, the entire device body can be transported at once, making it easy to move. Note that heating and cooling inside the heating/cooling device creates a pressure difference between the outside and the outside, but by using special heat-resistant and pressure-resistant connectors, you can take out the signal lines for motor power and temperature control without any problems. Can be configured.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view showing an example of a conventional heating/cooling device, Fig. 2 is a sectional view from the same side, Fig. 3 is a front sectional view of a heating/cooling device showing an embodiment of the present invention, and Fig. 4 is a sectional view of the same side. It is a sectional view of the same side. Explanation of the main parts of the diagram, 1... Heating/cooling device main body, 2... Material to be heated and cooled (material to be treated), 6... Heat exchanger for heat medium, 7... Heat exchanger for refrigerant, 8... Forced convection fan, 9...Duct with blowout hole.

Claims (1)

[Scope of utility model registration request] In a device for heating and cooling a workpiece, a heat exchanger for a heating medium and a heat exchanger for a refrigerant having the same cross-sectional shape are connected in series in a heating and cooling device main body,
A forced convection fan that blows air through these heat exchangers is installed on the outer plate frame of this heat exchanger, and hot air or cold air that is sent through the heat exchangers in series by the forced convection fan is distributed in parallel near the object to be treated. A heating/cooling device characterized by being provided with a duct with an ejection hole that ejects a flow directly onto an object to be treated.