JPS60248978A - Drier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a drying device, and more particularly to a drying device that dries objects to be dried using a combination of a cooling function and a heating function.

(Prior Art) Various proposals have been made for cold and hot storage in which a cooling heat exchanger and a heating heat exchanger are installed in the refrigerator, but these are simply based on the cooling function of the cooling heat exchanger. It merely had the heating function of a heating heat exchanger.

In addition, conventional drying equipment is known that performs drying by raising the temperature inside the container and then exhausting it outside the container, but since this is a hot air drying method, it requires high temperature and requires a large exhaust and air blower. Not only did it require additional equipment, but there was also the problem of low drying efficiency.

In addition, dehumidifying and drying with a reheat type air conditioner requires a large amount of airflow, so it is not practical, for example, when targeting a relatively small drying cabinet or when there are wet clothes etc. is impossible.

(Prior Art) Therefore, the applicant proposed a drying device described in Japanese Patent Application No. 59-043221.

This drying device increases the temperature inside the storage by a heating heat exchanger, decreases the temperature inside the storage by a cooling heat exchanger,
This is a dry dehumidification method that is alternately repeated by a control device.

Therefore, compared to conventional drying devices that dry the inside of a container by exhausting it to the outside without heating it to a high temperature, or dehumidifying and drying using a reheating air conditioner, the device is compact and highly efficient. It was a drying device that could be used.

(Problems to be Solved by the Invention) However, even in such a drying apparatus, since the ventilation paths during cooling and heating are the same, there are the following problems.

1) Of the moisture in the storage that condenses on the cooling heat exchanger during cooling, the moisture that adheres as droplets without flowing down evaporates again during heating, reducing drying efficiency.

2) Since the heat loss (loss due to heat being taken away by the cooling heat exchanger) when switching from cooling to heating is large, the temperature rise is slow, and as a result, more energy is used.

(Means for Solving the Problems) Therefore, in order to solve the above-mentioned problems, the present invention provides a storage for storing objects to be dried, and a cooling ventilation system having the storage in each path. a route and a heating ventilation route;
A cooling heat exchanger provided in the cooling ventilation path excluding the inside of the storage, a heating heat exchanger provided in the heating ventilation path, and a blower device that circulates air in both the ventilation paths. , a control device that alternately switches between the drainage means provided in the cooling ventilation path and the internal heat exchanger; and a ventilation path switch that switches the two-way air path in conjunction with the switching operation of the internal heat exchanger. The configuration includes a device.

(Function) Therefore, when this drying device is operated, if it starts from heating operation, the heating heat exchanger is first activated by the switching operation by the control device, and at the same time, the heating operation is interlocked with the operation of the heating heat exchanger. The ventilation path is switched to the heating ventilation path by the ventilation path switching device, and the blower is operated to circulate the air in the storage through the heating ventilation path.

After that, the temperature inside the storage is adjusted by the heating heat exchanger.
Due to the drying effect caused by the resulting decrease in the relative humidity inside the storage, the moisture of the material to be dried inside the storage is released into the air inside the storage.

When the temperature inside the storage reaches a certain value or higher, the control device is activated, stops the operation of the heating heat exchanger, and operates the cooling heat exchanger instead, and the ventilation path switching device is linked to The ventilation path through which the air is circulated can be switched from the heating ventilation path to the cooling ventilation path.

The cooling heat exchanger is activated and the temperature inside the storage is reduced.
The temperature drops below the dew point, and the water vapor in the air inside the storage warehouse mainly condenses and adheres to the cooling heat exchanger, resulting in a dehumidifying effect.

The drying action and dehumidification action described above are alternately and repeatedly performed by the control device, and as a result, the condensed water droplets are discharged to the outside of the storage by the drainage means.

Further, when starting from cooling operation, similar actions are repeated alternately.

(Example) Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In describing this embodiment, a vehicle drying device that also serves as a cold/hot storage will be taken as an example.

First, the configuration of the embodiment shown in FIGS. 1 to 7 will be explained.

1 is a storage, and a container body 3 with an opening 2 on the top surface;
The opening/closing M4 is provided in such a way that it can be closed tightly with a lock 5, and a removable hanger 6 is installed in this storage 1.

Further, an air outlet 8 is opened in the side wall 7 of the storage 1, and an inlet port IO is opened in the side wall 9.

ti is a cooling ventilation path, one end of which opens to an inlet 10 of the side wall 9, and the other end of which opens toward a blower 12, which is an air blower connected to the outlet 8.

Note that the blower 12 consists of a motor 13 and a fan 14,
It circulates the air within the ventilation path.

Reference numeral 15 denotes a heating ventilation path, which has one end opened to the suction port 10 of the side wall 9 and the other end opened to the blower 12.

] 6 is a cooling heat exchanger, <porator, which is provided in the middle of the cooling ventilation path 11,
This evaporator 16 is installed in the refrigeration cycle 17 of the vehicle near conditioner via a solenoid valve 18 that cuts off the flow of refrigerant gas, and its heat exchange action cools the inside of the refrigerator to 0.5°C. That's what I do.

Reference numeral 19 denotes a heater as a heating heat exchanger, which is installed between the blower 12 and the outlet 8 of the side wall 7. The heater 19 is a waterproof nichrome wire heater, and has no wiring. It is connected to the vehicle harness, and its heat exchange action heats the inside of the refrigerator.

A drain 20 serves as a drainage means, and is opened at the lower surface of the cooling ventilation path 11, passes through the container body 3, reaches the outside, and discharges moisture condensed on the evaporator 16 to the outside of the drying device.

The lower surface of the cooling ventilation path 11 is sloped toward the drain 20 so that water droplets falling from the evaporative lake 16 can easily flow.

Reference numeral 50 denotes a control device that selectively operates the evaporator 16 and the heater 19. Also, blower 12
The motor 13 is also controlled.

Reference numeral 21.22 denotes a ventilation path switching device, which is linked to the switching operation of the reheat exchanger 16.19 for cooling and heating, and includes a partition wall 23 that separates the cooling ventilation path 11 and the heating ventilation path 15. a shaft 24.25 provided in the shaft 24.25;
a switching plate 28.29 which is rotated around the center and has the same shape as the notch 26.27 of the partition wall 23; 4
an auxiliary switching plate 35.36 having the same shape as the locus and the shaft 24.2;
arm 30.31 attached to one end of arm 3;
an actuator 33 with a rod 34 connected to the tip of the actuator 1;
, the movement of the rod 34 is transmitted to the arm 30, and the switching plate 28
and a rod 32 that rotates the switching plate 29 at the same time.

The actuator 33 is operated by negative pressure, is connected to the negative pressure chamber 40 via a solenoid valve 37, and is operated in conjunction with the switching operation between the evaporator 16 and the heater 19 by the control device 50.

Reference numeral 38 denotes a changeover switch of the control device N50, which is attached to the outer surface of the container body and has an OFF position C, a refrigeration position D, a hot storage position E, and a drying position F.

S-1, S-2, S-3, and S-4 are thermoswitches, respectively, which are disposed inside the container body 3 and connected to the control device.

This thermoswitch S-1 is a freeze prevention switch for appropriately cooling the evaporator 16, and is kept ON when the temperature inside the refrigerator is 0°5°C or higher, and turns OFF when the temperature inside the refrigerator is 0.5°C or lower. Also,
The thermo switch S-2 is an overheat prevention switch for the heater 19, and remains ON when the temperature inside the refrigerator is below 80°C.
In "2", it becomes OFF.

Further, thermoswitches S-3 and S-4 are temperature control switches that are the main components of the control device 50 in the drying apparatus of this embodiment, and the thermoswitch S-3 is turned on when the temperature inside the refrigerator reaches 60°C or higher. The solenoid valve 18 is opened, and the thermo switch S-4 is turned on when the temperature inside the refrigerator is 0.5°C or less.
This is to operate the heater 19.

Note that the control device 50 includes the motor 13 and the evaporator 16.
, solenoid valve 18, heater 19, changeover switch 3B, and thermoswitches S-1 and S-2.

3-3 and S-4 for control, and their relationship is shown in FIG.

Next, the operation of the embodiment will be explained.

When the items to be dried are placed in the storage compartment L and the changeover switch 38 is set to the drying position F, the heater 19 is activated by the switching operation by the control device 50, and in conjunction with this, the ventilation path is switched to the heating position by the ventilation path switching devices 21 and 22. Ventilation route 1
5, and the air inside the storage 1 is circulated through the heating ventilation path 15 by the blower 12. Thereafter, the temperature inside the refrigerator is increased by the heating of the heater 19, and due to the drying effect due to the accompanying decrease in the relative humidity inside the refrigerator, the moisture of the material to be dried inside the refrigerator is released into the air inside the refrigerator.

Next, when the temperature inside the refrigerator reaches 60°C or higher, the thermoswitch S-3 is turned on and the controller 50 turns on the heater 1.
9 is stopped, the solenoid valve 18 is opened, and the refrigeration cycle 17 of the vehicle near conditioner and the evaporator 16 are connected. At the same time, the solenoid valve 37 is opened to guide negative pressure from the engine to the actuator 33.

The rod 34 is moved back, the arm 31 is rotated, and the switching plates 28 and 29 are rotated to switch the ventilation path of the air inside the storage 1 from the heating ventilation path 15 to the cooling ventilation path 11.

After that, when the evaporator 16 is activated and the temperature inside the storage compartment 1 drops to below the dew point, water vapor in the air inside the storage compartment 1 that exceeds the saturated amount of water vapor is condensed, resulting in a dehumidifying effect. will be carried out.

The water condensed by the dehumidifying action mainly adheres to the evaporator 16 and falls as water droplets, and the water is transferred to the drain 2.
0 to the outside of the drying apparatus of this embodiment.

Next, when the temperature inside the refrigerator falls below O-5 degrees Celsius, the thermoswitch S-4 is turned ON, and the control device 50 causes the evaporator 16 to stop functioning, and the heater 19 is activated instead, causing the inside of the refrigerator to rise again. is heated, and the ventilation path is also switched from the cooling ventilation path 11 to the heating ventilation path 15.

The drying action and dehumidification action described above are repeatedly performed by the control device 50.

Further, when the changeover switch 38 is set to the refrigeration position D, the power supply to the heater 19 is cut off by the control device 50.
At the same time, the solenoid valve 18 and the solenoid valve 37 are opened, the evaporator 16 is operated, and the ventilation path switching device 21.2 is opened.
2 is activated to switch the ventilation path to the cooling ventilation path, and the air inside the storage 1 is circulated through the cooling ventilation path 11 by the blower 12 to perform cooling. When the temperature inside the refrigerator falls below 0.5℃, thermo switch S-1
is turned OFF and cooling is stopped, and when the temperature reaches 0.5° C. or higher, the first temperature switch is turned ON and cooling is started again. By repeating this, the temperature inside the refrigerator is maintained at 0.5°C.

When the selector switch 38 is set to the warming position E, the controller 50 turns the heater 19 on in the same manner as in the case of drying.
is activated, the ventilation path is changed to the heating ventilation path 15 by the ventilation path switching devices 21 and 22, and heating is performed. When the temperature inside the refrigerator reaches 80°C or more, the thermoswitch S-2 turns OFF, cutting off the electricity to the heater 19 and stopping heating, and when it falls below 80°C, the thermoswitch S-2 turns on and turns off the electricity to the heater 19. It will be revived and heated again.

By repeating this, the temperature inside the refrigerator is maintained at 80°C.

In addition, even in the case of the heating position E, the air inside the storage 1 is circulated through the heating ventilation path 15 by the blower 12.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are design changes within the scope of the invention, the present invention include.

For example, in the embodiment, both cooling and heating ventilation paths 11.1
5 is provided inside the container main body 3, but it may be provided outside the container main body 3, and both ventilation paths may be provided separately, and separate blowers may be provided in both ventilation paths.

In addition, in the embodiment of the ventilation route switching device, a switching plate that rotates around an axis was used for the switching method, but
゛A vertical switching plate may be used, and an actuator that utilizes the negative pressure of the engine is used for the drive method, but instead, a solenoid valve, a motor, etc. are used, and the control device allows for easy switching between cooling and heating. Any device may be used as long as it can drive the ventilation path switching device in conjunction with the switching operation of the device.

In addition, in the example, a drying device using a refrigeration cycle of a vehicle near conditioner and a nichrome wire heater connected to a vehicle harness was shown, but a cooling heat exchanger and a heating heat exchanger for household use etc. If possible, it can also be configured for home use.

Further, as the heating heat exchanger, not only an electric heater such as a chrome wire heater, but also hot water from a radiator, etc., can be used, for example, when using a car.

In addition, the thermo switch S-1 for overheat prevention may be replaced with a temperature fuse, and the thermo switch S-1 may be replaced with a temperature fuse.
1, S-2 can also be integrated into thermoswitches S-3, S-4. It is also possible to incorporate a timer circuit and a humidity sensor circuit into the control device.

Further, in the embodiment, the operating temperature of the thermoswitches S-1 and S-4, which are the anti-freezing switches S-1 and S-4, was set at 0.5°C, but it may be any temperature that is below the dew point temperature and does not freeze.

Similarly, the set temperature of the thermoswitch S-2[deg.]-3 may be any temperature as long as the water content of the material to be dried can evaporate.

(Effects of the Invention) As described above, according to the present invention, the drying method is such that the temperature increase by the heating heat exchanger and the temperature decrease by the cooling heat exchanger are alternately repeated by the control device. A cooling ventilation path having a cooling heat exchanger and a heating ventilation path having a heating heat exchanger are provided separately, and both air paths are clearly switched.The ventilation path is switched in conjunction with the switching operation of the exchanger. The provision of a path switching device prevents moisture that has condensed and adhered to the cooling heat exchanger from reevaporating during heating and reducing the drying effect, and also prevents heat from being transferred to the cooling heat exchanger when switching from cooling to heating. Since the energy used for drying is not lost to the heat exchanger, the energy used for drying can be used effectively.Furthermore, unlike conventional hot air drying methods, there is no need for large exhaust holes or large blowers, and the device is compact. It has the effect of being able to perform efficient drying.

In addition to the above-mentioned effects, in the embodiment, after drying, it can be taken out of the refrigerator either in a warm or cold state, so it can be used, for example, to dry ski clothes in the winter or to bathe in the sea in the summer. When drying clothing, etc., it can be removed whether it is warm or cold.

In addition, thermosensors S-1, S-2, and S- are installed in the control device.
3. Since it is equipped with S-4 and a changeover switch, it can also be used as a hot storage or refrigerator.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a drying device according to an embodiment of the present invention, Fig. 2 is a perspective view of a ventilation path switching device portion of a drying device according to an embodiment of the present invention, and Figs. 3 and 4 are ventilation paths during heating. A cross-sectional view showing
Figures 5 and 6 are cross-sectional views showing ventilation paths during cooling;
The figure is a block diagram showing the control state of the control device. l...Storage 11...Cooling ventilation path 12...Prower (air blower) 15...Heating ventilation path 16...Evaporator (cooling heat exchanger) 19...
Heater (heat exchanger for heating) 20... Drain (drainage means) 21.22... Ventilation route switching device 50... Control device patent application Hito-Nissan Shatai Co., Ltd. Figure 4 Figure 6

Claims (1)

[Claims] l) A storage for storing objects to be dried, a cooling ventilation path and a heating ventilation path that have the storage in their respective paths, and a cooling heat provided in the cooling ventilation path excluding the inside of the storage. an exchanger, a heating heat exchanger provided in the heating ventilation path, a blower device that circulates air in both the ventilation paths, and a drainage means provided in the cooling ventilation path;
A drying device comprising: a control device that alternately switches the internal heat exchangers; and a ventilation path switching device that switches the two-way air path in conjunction with the switching operation of the internal heat exchangers.