JPS60162176A - Dehumidifying 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] Conventional ventilation dryers that use flammable oil or gas have the following problems: (a) Because the temperature of the drying air is high, when seafood, mushrooms, vegetables, etc. are dried, their aromas are released. In addition to the large number of changes in grain and ingredients, there is also a lot of shrinkage due to rapid temperature changes, and on the other hand, when the grain is dried, shell cracking occurs.

(b) Since exhaust gas is emitted, there is pollution due to the exhaust gas, and there is also a high noise level during operation due to combustion noise, and there is a risk of fire outbreak.

(/j Since the drying method uses exhaust air drying or partial circulation drying, heat is discarded during operation, resulting in large heat losses.

2) Facilities such as separate storage facilities for combustible oil and combustible gas, piping facilities, and accompanying safety equipment are required, and additional costs are incurred for replenishing and transporting fuel.

(e) Dry air in the large drying room is not well circulated.

There were other drawbacks.

Therefore, in order to eliminate the above-mentioned defects, the present invention utilizes a heat pump type cooling device, cools the humid air in the drying chamber with an evaporator to cause dew condensation, drains the moisture outside the machine, and dehumidifies and dries the air. The heated dry air is heated by the heat dissipation of the condenser, dehumidified and dried, and then supplied into the drying chamber.In the drying chamber, the air is well circulated by a blower located in the middle of the lower part of the drying chamber, and the material to be dried is heated. When the moisture in the dry air is absorbed into the dry air, and the temperature of the dry air reaches the set temperature, the heat is exhausted by the condenser of the ventilation cooler connected to the above-mentioned cooling device, and the humid air is dehumidified and dried by the evaporator. By circulating dry air at a low temperature of 0' to 40°C, a large amount of dried material can be dried, without the use of fuel, and without the release of aroma or change in the composition of the dried material. The present invention relates to a dehumidification/drying device that is capable of uniformly and efficiently drying objects in a short period of time.

To explain the structure of one embodiment of the present invention shown in the drawings, fil is a drying chamber of a dehumidification/drying device, a door (2) is provided at the front entrance and a dry air inlet (3) is provided at the upper end of the rear wall.
), and a moist air outlet (4) is installed in the middle part. (5) is a partition frame erected at the middle lower part of the drying chamber (1), and a blower (7) driven by a motor (6) is attached to the openings 1 on both sides and above and below. (8) are carts arranged in series in the front and rear directions on both sides of the front of the partition frame (5), and are constructed in the form of a tunnel with the front and rear sides open, with an appropriate number of shelves (9) arranged in parallel inside. (10I old) is a temperature sensor lJ6 and a humidity sensor provided facing the middle part of the rear end inside the drying room [+1].

The mackerel is the body of the dehumidifying and warming machine installed at the rear of the drying room (11, the ventilation passage f13 formed in the upper part of the body 0 side) the lower end inlet and the humid air outlet (4) are connected to the upper and lower air passages. (141Q5i
Therefore, the outlet of the upper end ventilation room Let it happen.

(Al indicates the ventilation cooler installed outside the fuselage (1), θ9 is the cooling 4M (al fuselage, air inlet (21) is installed at the front and rear of the lower part, and exhaust rJ t2+1 is installed above, respectively. Formation 12, a blower (2'A) is provided in the upper part of the body 09.

(bl indicates a heat pump type cooling device, (231e
Reference numeral 41 denotes the compressor and oil reservoir, which are installed at the lower part of the fuselage (1). The 40θ frame is a reheating condenser, a cooling and dehumidifying evaporator, and an exhaust heat condenser, and the lower air space e1 of the reheating condenser, cooling and dehumidifying evaporator (a) is connected to the lower air passage Q51, respectively. Exhaust heat condensers are installed in the front and rear air spaces inside the fuselage α9. (to) is a filter installed below the cooling and dehumidifying evaporator @, Gl) is a drainage gutter installed on the bottom of empty room e1, C (3 is a control panel installed at the bottom of aircraft α2, @ is The temperature control knob on control panel G2, C34) is on control panel 07J.
This is the humidity control knob.

c (g) is the horizontal axis G71 in the upper and lower air passages UaS, respectively.
The opening/closing plate constructed by c181, its horizontal axis Gn081
Attach the arm arm (413) to the end of the drying chamber (11).(41) is the motor installed in the middle part of the rear face of the drying chamber (11), and connect the arm arm (4z and arm arm C1 (41) of the driving shaft) In normal times, as shown in Fig. 1, the opening/closing plate (to) is closed and the opening/closing plate is open.

As shown in Figure 8, the reheat condenser (
5) and the inlet 1 of the cooling and dehumidifying evaporator (A) are connected to the outlet of the cooling and dehumidifying evaporator 061 by a parallel pipe group with an expansion valve 3n, a solenoid valve (481) and an expansion valve (491). The refrigerant inlets of the pre-sump t241 are connected through pipes e5]), and the inlets of the electromagnetic three-way valves (49 and exhaust heat condenser) are connected in parallel with the outlet of the exhaust heat condenser □□□ through 6 pipes. Vibro (public expansion valve (with 531) and solenoid valve c
'i4) and a parallel pipe mark with an expansion valve (to), respectively.

On the other hand, although not shown, the blower Q81e2'J, temperature sensor a01, humidity sensor (II), control panel C32), motor (41), solenoid 3-way valve (451 and solenoid valve (4
) During 0541, if you turn on the control panel 02, the blower 0 barrel and compressor @ will start operating, and the drying room (1
) When the temperature within ) reaches the set temperature, temperature sensor 001
The electromagnetic three-way valve (451 is the pipe (4
At the same time, the blower (2) switches from the 61 side to the vibro 2 side.
21 starts operation, and when the humidity in the drying chamber (1) reaches the set humidity, the solenoid valve (481 (FA)) automatically closes due to the detection by the humidity sensor (old), and the motor (
41) Configure an electric circuit to start.

Next, its effect will be explained. Seafood, grains, vegetables, certain 4'
L, the required materials to be dried such as mushrooms are placed on the shelf (9) of the trolley (8).
Place it on the ground, and as shown in Figure 2, place the number of trolleys (81) in series in front of the openings [-1] on both sides of the partition frame ([5)] and close the door (2). After that, the control rod θ2
) Turn on the switch to start the machine, then turn the knob (to) ((41) to adjust the setting from 10 to
7'm temperature within 40 °C, and relative 7 in the atmosphere
If the required humidity is set to have a looseness of 20 inches to 45 inches, +Al In the initial stage, the refrigerant flows from the compressor (231 to the electromagnetic It is press-fitted into the condenser through the valves (4, vibrator (4G), heat is radiated from the condenser, and then the vibrator (4G) is injected into the condenser.
), expansion valve i4H! +1. ilf, passes through the magnetic valve (41 (l) and evaporates into the evaporator e61.
7, and then passes through the vibro υ and returns to the oil sump example.

On the other hand, as the air blower +710a is operated, the air in the drying chamber (1) is circulated through the drying chamber (11) and the ventilation path 0, as shown by the arrows in FIGS.
The humid air that has passed between the objects to be dried on the inner shelf (9) and moved backward flows from the outlet (4) to the downward air passage (151).
After passing through a vacant chamber (to) and a filter (to) to remove dust, it passes through an evaporator (a), and as it passes through the evaporator (b), it is cooled and condenses, and the moisture is drained into the drain gutter. Aircraft (
θ, the air is dehumidified and dried and reaches the empty chamber (21O). Also, a part of the humid air passes through the upper air passage (141) and reaches the air (281) where it is dehumidified and dried. Combine with air.

The dehumidified and dried air passes through the condenser (5) and is warmed as it passes through the condenser (5), and the heated dry air passes through the ventilation chamber 06) and the air path (171). entrance (3
) is supplied into the drying room (11), advances along the outer part of the cart (8) in the drying room (1), enters the cart (8) from the front, and supplies the dried material on the shelf (9). As it passes through the space and moves backward, the material to be dried is dehumidified and dried, and the above operations are repeated one after another while the air circulates and the drying work is performed.Meanwhile, as time passes, the drying chamber (1 ) The temperature of the circulating air gradually increases and the humidity gradually decreases.

(13) When the temperature of the circulating air reaches the set temperature, the temperature sensor (101) detects the temperature and automatically switches the electromagnetic three-way valves (four to the vibro 4 side), and the blower starts operating. Start.

Therefore, as shown by the dotted arrow in FIG. 8, the refrigerant is forced into the condenser cylinder from the compressor @ through the electromagnetic three-way valve t451 and the vibrator 521, and heat is radiated from the condenser cylinder.
It passes through the pipe (to), the expansion valve (to), the solenoid valve 54J, and the pipe mark to the evaporator (■), evaporates and cools the evaporator (to), and then passes through the vibro υ to the oil sump (2). ).

On the other hand, when the blower (221) is operated, outside air is sucked into the body a9 at the inlet port and passes through the condenser cylinder, and as it passes through the condenser cylinder, the condenser cylinder is cooled, and the heated exhaust air is cooled. is discharged from the exhaust port 011 to the outside of the fuselage aj.

Therefore, the condenser @ is closed and no refrigerant passes through it.
Since the circulating air in the drying chamber +11 is only cooled and condensed when passing through the evaporator (26) and is not heated, the temperature of the circulating air gradually decreases.

(C) When the temperature of the circulating air falls below the set temperature, the electromagnetic three-way valve (45) is automatically switched to the pipe (46) side upon detection by the temperature sensor (101), and the above (A) ) is performed.

Thereafter, the above actions are automatically repeated one after another, and the drying chamber (11
The drying process is carried out by dehumidifying and drying air of uniform temperature passing through the chamber at a constant speed.

At this time, by rotating the knob 031, the temperature of the circulating air in the drying chamber (1) can be freely adjusted and set within the range of l♂ to 40°C.

- On the other hand, when the humidity of the circulating air falls below the set humidity, the humidity sensor (Ill) automatically detects the solenoid valve (48) 5.
41 is closed to control the flow rate of refrigerant through the evaporator 00 and the condenser (two or three). At the same time, the motor (41)
starts, and the arm (421) of its driving shaft causes the link (41
” Since the opening/closing plate opens and the opening/closing plate □□□1 closes, the humid air entering the ventilation passage Q31 from the outlet (4)
A portion passes through the lower air passage f151, the empty room @, and the filter m, and is dehumidified and dried by the evaporator ■, and reaches the empty room f28i, and most of it passes through the upper air passage (+41) and reaches the empty room (to). The air is heated by a condenser (5) together with the dehumidified and dried air of the above-mentioned portion, and is supplied into the drying chamber (1) from the inlet (3) to adjust the humidity of the circulating air.

At this time, by rotating the knob (34), the final relative humidity of the circulating air in the drying chamber (11) can be freely adjusted and set within the range of 20% to 45%. .

In addition, in order to prevent uneven drying of materials that are difficult to dry, the blowers (7) on both sides are driven in opposite directions, and a timer is installed in the electric circuit to the motors (6). If the switch is set so that the rotation of the blowers (7) on both sides is switched between forward and reverse every time the set time of the timer elapses, the dry air will flow to the trolley (8) on the first side for a certain period of time.
The robot moves forward in the cart (8) on the other side, moves backward in the cart (8) on the other side, and then moves backward in the cart (8) on the first side and moves forward in the cart (8) on the other side for a certain period of time. The drying process is automatically repeated alternately to achieve even and even drying.

Since the present invention has the dehumidifying and drying device configured as described above, (a) the temperature of the drying air is low in the range of 106 to 40°C, so when seafood, mushrooms, vegetables, etc. are dried, their aromas are released. In addition to little change in ingredients, there is no sudden temperature change, so there is little shrinkage, and when drying grains,
There is less occurrence of body cracking.

(b) In addition to the high dehumidification efficiency of dry air, the drying time can be significantly shortened by heating the dry air, and when the temperature of the dry air reaches the set temperature, the refrigerant is automatically turned on. Switching to the condenser of the ventilation cooler, the heat is exhausted outside the machine, and the dry air is only cooled and condensed by the evaporator, so drying is performed with dehumidified dry air at a uniform and appropriate temperature throughout, improving work efficiency.

ej Since no flammable oil or gas is used, there is no pollution caused by exhaust gas, there is no combustion noise, the noise during operation is low, and the temperature during operation is as low as 40 degrees Celsius (maximum), reducing the risk of fire. There are very few cases (and you can leave the car running with confidence.

2) Because dry air is constantly circulated during operation, heat loss is extremely low, and the only heat source is electricity, reducing costs such as fuel storage equipment, piping equipment, fuel supply and transportation, and accompanying safety equipment. You can save money.

(Feather) By installing a partition frame with a blower in the middle of the drying chamber, the blower promotes the circulation of air inside the drying chamber, and the drying air can be circulated smoothly in the large drying chamber, increasing drying efficiency. improves.

(f) Not only can continuous operation be achieved by simply setting the temperature and turning on the switch, the temperature of the drying air can be arbitrarily set to a temperature suitable for drying the material to be dried, and the amount of water discharged by dehumidification can be reduced. Dryness can be detected, operation management is easy, and handling is easy.

(g) Since a single heat pump type cooling device performs both cooling and heating of dry air, it can be easily constructed and manufactured at low cost.

There are other effects.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional side view of a dehumidifying dryer showing one embodiment of the present invention, FIG. 2 is a plan sectional view of the same drying chamber, and FIG.
4 is a sectional view taken along the line ■-■ in FIG. 1, FIG. 5 is a sectional view taken along the ■-■ line in FIG. 7 is a cross-sectional view taken along the line -V in FIG. 1, and FIG. 8 is a piping diagram of the heat pump type cooling device. (1)...Drying chamber, (3;...Air inlet, (4)...
... Air outlet, (5) ... Partition frame, (71 ... Air blower, (+01 ... Temperature sensor, Su ... Ventilation duct, (1
a...Blower, (al...Ventilation cooler, (bl...
・Heat pump type cooling device, (c)... Condenser, @・
...Evaporator, Punishment...Condenser, C321...Control panel,
u51...Electromagnetic 3-way valve, patent applicant Shinosha Co., Ltd. Takabishi Dengyo Co., Ltd.

Claims (1)

[Claims] In the ventilation passage that communicates the air outlet and air inlet of the drying room,
In addition to installing an air blower, the evaporator and condenser of a heat pump type cooling device are arranged side by side at appropriate intervals, and the condenser is installed in the ventilation cooler outside the drying room. When the temperature of the drying air reaches a predetermined temperature, a temperature sensor is connected by a circuit and placed between the temperature sensor, which is placed at an appropriate location in the drying room with a ventilation path, the electromagnetic three-way valve, and the temperature control control panel. An electric circuit was formed in which an electromagnetic three-way valve was switched from the condenser side in the ventilation path to the condenser side in the ventilation cooler by sensing the sensor, and a partition frame with a blower was provided at the middle lower part of the drying chamber. A dehumidifying and drying device characterized by: