JPH03181726A - Device for controlling dehumidifying air in dehumidifying machine - Google Patents

Abstract

PURPOSE:To enable easily switching between discharge of air to the outside and sending air within equipment, improve the drying efficiency of grain, and prevent degradation in quality of grain through storage by providing in a passageway for heated air a switching valve for heated air for switchover between discharge of air to the outside and sending air within equipment and in a passageway for cooled air a switching valve for cooled air for switchover between discharge of air to the outside and sending air within equipment. CONSTITUTION:In a dehumidifying machine during the dehumidifying drying operation from the start of the drying to the intermediate stage, a heated air-switching axis 40 in a heated air passageway 3 and a cooled air-switching axis 42 in a cooled air passageway 6 are controlled in such a manner as to close a heated air-discharge port 39 and a cooled air-discharge port 41 respectively with a heated air-switching valve 7 and a cooled air-switching valve 8 so that the outdoor air drawn into the heated air passageway 3 by a suction fan 1 turns to heated air by passing a condenser 2 and the outdoor air drawn into the cooled air passageway 6 by a suction fan 4 turns to cooled air by passing an evaporator 5. The heated air and the cooled air are mixed to make dehumidifying air, to which grain is exposed and dried.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a dehumidifying air control device for a dehumidifier.

Traditionally, dehumidifiers obtain dehumidified air by passing the outside air sucked in by a suction fan through an evaporator and a condenser. It was a dehumidifying air control device that could not be controlled to obtain cooling air or heating air by passing through the air.

Problems to be Solved by the Invention For example, in a dehumidifier used in a grain dryer, the grains stored in the grain drying chamber of the grain dryer are exposed to dehumidified air at a set temperature and humidity from the dehumidifier. is generated and this dehumidified air passes through this drying chamber, so that the grains in this drying chamber are exposed to this dehumidified air and dried.

During this dehumidifying and drying work, drying is performed with dehumidifying air during the early and middle stages of drying, and during the latter stage, switching to heated air is performed and drying is performed only with heated air, and if cooling is required for storing dried grains, cooling is performed. Switch to wind and store while exposing to this cooling wind. Create a structure that allows these changes to be made easily to improve grain drying efficiency and prevent quality deterioration during grain storage.Means for Solving the Problems This Invention The outside air sucked in by the suction fan 1 is transferred to the condenser 2.
A heating air passage 3 is provided in which the air is heated through the evaporator 5, and a cooling air passage 6 is provided in which the outside air drawn in by the suction fan 4 is turned into cooling air through the evaporator 5. In a dehumidifier that obtains dehumidified air by connecting the heated air and the cooling air at the tip so as to join them, the heated air passage 3 has a section in which the heated air is divided into external exhaust air and internal air. A heating air switching valve 7 is rotatably provided for switching, and a cooling air switching valve 8 is rotatably provided in the cooling air passage 6 for switching the cooling air between external exhaust air and internal air. The structure of the dehumidifying air control device is characterized by:

Effect of the Invention In the dehumidifier used in the grain dryer, the grains housed in the grain drying chamber of the grain dryer are dehumidified by the dehumidifying air generated from the dehumidifier at a set temperature and humidity. As the wind passes through the drying chamber, the grains in the drying chamber are exposed to the dehumidified air and dried.

The initial and middle stages of drying during this dehumidifying and drying work are defined as when the heating air switching valve 7 and the cooling air switching valve 8 are closed, and the outside air sucked into the heating air passage 3 by the suction fan 1 is condensed. Vessel 2
The outside air that is drawn into the cooling air passage 6 by the suction fan 4 is converted into cooling air by passing through the evaporator 5, and the heating air and the cooling air are The grains are mixed with the wind and become dehumidified wind, and the grains are exposed to this dehumidified wind and dried.

In the latter stage of drying, the warming air switching valve 7 is in the closed state and the cooling air switching valve 8 is in the open state, so that the outside air sucked into the heating air passage 3 by the suction fan 1 is transferred to the condenser 2. The outside air drawn into the cooling air passage 6 by the suction fan 4 is converted into cooling air by passing through the evaporator 5, and this cooling air is is exhausted outside the machine, and the grains are exposed to only the converted heated air and dried.

When storing and cooling dried grains, the heating air switching valve 7 is in an open state and the cooling air switching valve 8 is in a closed state, so that the drying air is sucked into the heating air passage 3 by the suction fan 1. The outside air is converted into heated air by passing through the condenser 2, and the converted heated air is discharged outside the machine and sucked into the cooling air passage 6 by the suction fan 4. The outside air is converted into cooling air by passing through the evaporator 5, and the dried grains are stored while being exposed only to the converted cooling air.

Effects of the Invention According to this invention, by switching between the heated air switching valve 7 and the cooling air switching valve 8, the grains are dried with dehumidified air during the early and middle stages of grain drying, and only with heated air during the latter stages. When the grain is dried and the dry grain is stored while being exposed to cooling air, the drying rate of the grain decreases in the later stages.
The drying efficiency of grains is improved by drying with heated air, and quality deterioration can be prevented by exposing grains to cooling air during storage.Also, the can switching valve 7.8 has a simple switching operation structure. It is also cheaper.

Embodiment The government will explain the dehumidifier 9 installed in a circulation type grain dryer 10.

The dryer IO has a rectangular shape that is long in the front and back direction, and is provided with a transfer gutter 12 and a ceiling plate 13 in which a transfer spiral is rotatably installed at the upper end of the seed mold 11, and a ceiling plate 13 is provided below the ceiling plate 13 for storing grains. A storage chamber 14 for grain storage is formed, and grain drying chambers 17 are provided below the storage chamber 14 to communicate with the left and right outer ventilation chambers 15 and the central ventilation chamber 16. At the bottom of each drying chamber 17, a feed-out valve 18 for feeding and flowing grains is rotatably supported, and at the bottom of each drying chamber 17, a grain collection gutter 19 rotatably equipped with a transfer spiral is provided. This is a configuration in which they are communicated with each other.

The front seed mold 11 is equipped with an operating device 20 for starting and stopping the dehumidifier 9 and the dryer IO for each operation of drying and discharging. It has a structure in which it communicates with the chamber 16, and an exhaust duct chamber 21 is formed on the rear side of the rear mold 11, and an exhaust fan 22 and an exhaust fan 22 are formed on the rear side of the exhaust tract chamber 21. A rotationally driven exhaust fan motor 23 is provided, and the exhaust fan 22 and each of the exhaust chambers 15 communicate with each other via the exhaust path chamber 21. The valve 18 is connected to the deceleration mechanism 24
This configuration includes a valve motor 25 that is rotationally driven via a valve motor 25.

A supply port for supplying transferred grains into the storage chamber 14 is provided in the center of the bottom plate of the transfer gutter 12, and a diffusion port is provided below the supply port to uniformly diffuse and return the grains into the storage chamber 14. Board 2
6 is provided.

The grain raising machine 27 is installed in the front part of the front seed mold 11, has a packet conveyor 28 belt stretched inside, and has a discharging cylinder 29 provided between the upper end and the starting end of the transfer gutter 12 for communication. A supply gutter 3o is provided between the lower end and the terminal end of the grain collecting gutter 19.
This is a configuration in which communication is provided.

A grain raising machine motor 31 is provided above the grain raising machine 27, and the grain raising machine motor 31 rotationally drives the packet conveyor 28 belt, the transfer spiral in the transfer gutter 12, and the spreading plate 26, and at the same time The structure is such that the transfer spiral in the grain collecting trough 19 is rotationally driven, and a moisture sensor 32 for detecting grain moisture is provided at the center in the vertical direction of the grain collection trough 19, and this moisture sensor 32 receives electricity from the operating device 20. By transmitting the target measurement signal, the moisture motor 3 installed in the moisture sensor 32 is activated.
3 rotates and this moisture sensor 32 is rotationally driven to detect grain moisture.

The dehumidifier 9 has a structure in which outside air is converted into dehumidified air by the passage of a refrigerant, and the dehumidifier 9 has a box shape, and the upper part of the box has a humidifier housing a suction fan 1, a condenser 2, etc. A compressor 34, a compressor motor 35 that rotationally drives the compressor 34, and an expansion valve 43 form the hot air passage 3, and the middle part is a compressor 34, a compressor motor 35 that rotationally drives the compressor 34, and an expansion valve 43.
The lower part forms a cooling air passage 6 containing an intake fan 4, an evaporator 5, etc., and one end side of the heating air passage 3 and the cooling air passage 6 is Each suction port 37 for sucking in outside air is provided, and the tip on the other end side is connected and provided with a blowing port 38 to communicate with the blowing electrician 6.

A hot air exhaust port 39 is provided on the upper plate of the heated air passage 3, and this hot air exhaust port 39 is a heated air switching valve that switches the heated air in the heated air passage 3 between outside the machine and inside the machine. A hot air switching shaft 40 to which a valve 7 is fixed is rotatably supported manually, and when the hot air switching valve 7 is operated in the closed state, heated air is blown to the air outlet 38, and when the hot air switching valve 7 is operated in the open state, the heated air is blown to the air outlet 38. The configuration is such that air is exhausted to the outside of the machine from an air exhaust port 39. A cold air exhaust port 41 is provided on the lower plate of the cooling air passage 6, and this cold air exhaust port 41 exhausts the cooling air inside the cooling air passage 6 to the outside of the machine. A cold air switching shaft 42 to which a cooling air switching valve 8 for switching between the air and the inside of the machine is fixed is rotatably supported manually, and when the cooling air switching valve 8 is operated in a closed state, cooling air is blown to the air outlet 38, When operated in the open state, air is discharged from the cold air outlet 41 to the outside of the machine, and one end of these switching shafts 40, 42 is formed in an L-shape to serve as a handle for rotation. Further, these switching shafts 40, 42 may be configured to be automatically rotated by a solenoid or the like.

The outside air sucked in by the suction fan 1 through the suction port 37 of the heating air passage 3 is converted into heated air by passing through the condenser 2 section, and is then passed through the suction port 37 of the cooling air passage 6. The outside air sucked in by the suction fan 4 from 37 is
By passing through the evaporator 5 section, it is converted into cooling air, and these heated air and cooling air are mixed to become dehumidifying air. It is configured so that it can be selectively used by operating each switching shaft 40, 42.

Hereinafter, the operation of the above embodiment will be explained.

By operating the operating device 20, each part of the grain dryer IO, the dehumidifier 9, the moisture sensor 32, etc. are started, and dehumidified air is generated from the dehumidifier 9, and this dehumidified air is sent from the air outlet 38 to the air blowing chamber. 16, the grain drying chamber 17, and the exhaust chamber 1.
5. The grains stored in the storage chamber 14 are sucked and exhausted by the exhaust fan 22 through the air exhaust duct chamber 21, so that the grains stored in the storage chamber 14 are exposed to the dehumidified air while flowing down from the storage chamber 14 into the drying chamber 17. The grains are exposed and dried, are fed to the lower part by the feed valve 18, flow down, are transferred from the grain collection gutter 19 through the feed gutter 30 into the grain raising machine 27 by the lower transfer spiral, and are fed to the packet conveyor 28.
The paper is conveyed to the upper part through the discharge cylinder 29 and supplied into the transfer gutter 12. From this transfer gutter 12, the paper is laterally fed onto the diffusion plate 26 by the transfer spiral of section F, and the paper is stored in the diffusion plate 26. room 14
When the moisture sensor 32 detects the same grain moisture as the finishing target moisture set by the moisture sensor 32, the operating device 20 automatically controls the dryer 10 to automatically extract the grain. Stop grain drying.

During this dehumidifying and drying work, from the start of drying to the middle period, the warm air switching shaft 40 of the heated air passage 3 and the cold air switching shaft 42 of the cooling air passage 6 of the dehumidifier 9 are operated to blow the heated air. The hot air outlet 39 and the cold air outlet 41 are closed by the switching valve 7 and the cooling air switching valve 8, and the outside air sucked into the heated air passage 3 by the suction fan 1 is transferred to the condenser 2. The air is converted into heated air by passing through the cooling air passage 6, and the suction fan 4
The outside air sucked in is converted into cooling air by passing through the evaporator 5, and these cooling air and warm air are mixed to form dehumidifying air, and the grains are exposed to this dehumidifying air and dried. Ru.

In the latter half of the dehumidifying and drying work, the hot air outlet 39 remains closed, and the cold air outlet 41 is opened by operating the cold air switching shaft 42.
When the air is opened, the cooling air that has passed through the evaporator 5 and has been converted to cooling air is discharged to the outside of the machine, and the heated air that has passed through the condenser 2 and been converted to heating air is discharged to the outside of the machine. The grains are exposed to dryness in a chisel.

When storing and cooling dried grains, the cold air outlet 41 remains closed, and the hot air switching shaft 40 is operated to open the hot air outlet 39 to remove the condensed grain. Vessel 2
This heated air, which has passed through the evaporator 5 and been converted into heated air, is discharged outside the machine, and the grains are exposed to only this cooling air, which has passed through the evaporator 5 and been converted into cooling air, to be cooled. Ru.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a side sectional view of a dehumidifier, Fig. 2 is an overall side view of a grain dryer, and Fig. 3 is a side sectional view of a dehumidifier.
The figure is a sectional view taken along the line A-A in FIG. 2, and FIG. 4 is a rear view of a part of the grain dryer. Explanation of symbols ■ Suction fan 2 Condenser 3 Warming air passage 4 Suction fan 5 Evaporator 6 Cooling air passage 7 Warming air switching valve 8 Cooling air switching valve Figure 3 Figure 4

Claims (1)

[Claims] A heating air passage 3 is provided in which the outside air drawn in by the suction fan 1 is made into warm air through a condenser 2, and a cooling air passage 6 is provided in which the outside air taken in by the suction fan 4 is made into cooling air through an evaporator 5. The heated air passage 3 and the cooling air passage 6 are connected at the tip of the dehumidifier to obtain dehumidified air by merging the heated air and the cooling air. A rotatably heated air switching valve 7 is provided in the cooling air passage 6 to switch the heated air between the external exhaust air and the internal air. A dehumidifying air control device characterized in that a rotatable cooling air switching valve 8 is provided.