JPH068478Y2 - Dehumidifying dryer - Google Patents

Description

TECHNICAL FIELD The present invention relates to an improvement of a refrigerating type air dehumidifying dryer used for the purpose of drying food or wood, or adjusting the humidity of a warehouse or a plant cultivation room. .

2. Description of the Related Art As an apparatus of this type, as shown in FIG. 1, for example, an air outlet 11 having a mesh plate at the lower front portion of a box-shaped duct case 10 and an air outlet having a wind direction plate 12a at the upper front portion. 12, a refrigerant evaporator 13 of the refrigerator is provided facing the air inlet 11, and a refrigerant condenser 14 is provided in the immediate vicinity of the leeward side, and the air inlet 11 is provided by the blower 15.
The air sucked from the first is cooled by the refrigerant evaporator 13, the condensed water is separated and removed into the drain tank 16, and then, in the refrigerant condenser 14, the hot air sent from the compressor 17 of the refrigerator is supplied. It is known that the gas is reheated by exchanging heat with the gas and then sent out from the air outlet 12 into the room. A reference numeral 2 denotes a control box provided inside the center of the front side plate 10a of the duct case 10 in consideration of operability such as humidity setting and device operation. The humidity detector 1 and the humidity detector 1 A control device (not shown) that controls the operation of the compressor 17 and the blower 15 of the refrigerator based on the signal is stored.

Since the humidity detector 1 needs to accurately measure the humidity in the room to be dehumidified, the humidity sensor unit is located at a place where the air to be measured is constantly flowing and circulated without stagnation in the sensor unit. Needs to be installed. An example of such a place is the air inlet 11,
There is not enough mounting space, and even if you install it forcibly, the position of the humidity control knob is biased downward,
In addition to poor operability, the front surface of the evaporator 13 is blocked, which causes a problem such as a reduction in dehumidification efficiency. Therefore, in the conventional device, as described above, the duct case front side plate 10a which also serves as the wall surface of the control box 2 is provided.
The outside air is introduced into the control box by the negative pressure generated by the blower 15 from the air introduction hole 3 provided in the control box, and this inflowing outside air is discharged into the duct case 10 from the ventilation hole 4 provided in the top plate of the control box. Meanwhile, the humidity detector 1 provided in the control box detects the humidity of the introduced outside air and inputs it to the controller.

Problem However, since the control box 2 is exposed to the airflow of which the temperature has risen by passing through the refrigerant condenser on the windward side thereof, and the heat generated from the controller itself, the temperature inside the control box is The temperature of the humidity sensor is higher than the outside air, and the size of the humidity detector is very small compared to the volume of the control box. After mixing with rising air and decreasing the relative humidity, it reaches the humidity sensitive part of the humidity detector, so the detected value does not accurately reflect the humidity of the outside air, and the control box There was a defect that the detected value fluctuated due to the fluctuation of the airflow temperature in the vicinity of No. 2.

Configuration of the Invention The present invention has been made in response to such a circumstance, and its gist is to provide a refrigerator of a refrigerator along an air flow direction in a duct case having an air inlet / outlet and a built-in blower. The refrigerant evaporator is provided as an air-cooling dehumidifier, and the refrigerant condenser is provided as an air reheater on the leeward side, and the outside air is provided on the wall surface inside the duct case on the leeward side of the refrigerant condenser. In the air dehumidification dryer provided with a control box having a vent hole that communicates with the inside of the duct case while accommodating the refrigerator, the controller for controlling the operation of the blower, and the like, in the control box, Further, while defining an outside air inflow chamber surrounding the outside air introduction hole, an opening for opening the outside air introduction chamber into the control box is provided in the outside air introduction chamber, and the air inflow chamber is opened from the outside air introduction hole. Air reaching the opening A dehumidifier characterized in that a humidity detector is housed in the flow path so that most of the introduced outside air passes near the humidity sensitive part of the humidity detector and the heat effect of the air flow outside the control box is blocked. In the dryer. Hereinafter, a detailed description will be given based on one embodiment.

Embodiment In the structure of one embodiment of the present invention described below, the structure other than the structure in the control box 2 is exactly the same as the conventional device shown in FIG. , And description will be given with the same numbers.

The dehumidifying dryer 20 of the present application has an air filter 11a at the lower front surface.
A box-shaped duct case 10 having an air inlet 11 formed of a mesh plate or the like and an air outlet 12 having an air flow direction plate 12a at the upper front face the refrigerant evaporator 13 of the refrigerator facing the air inlet 11. And the refrigerant condensers 14 are arranged on the leeward side thereof so as to reheat the air that has been cooled and dehumidified by passing through the refrigerant evaporator 13 to raise the relative humidity. Reference numeral 17 denotes a refrigerant compressor, which is the refrigerant condenser 1
4, a refrigerant evaporator 13, and a refrigerant expander (not shown) constitute a refrigerator. A blower 15 is an air inlet 11
Air is sucked in from the evaporator 13, and moisture in the air is separated and removed as condensed water in the drain tank 16 by the evaporator 13.
The air reheated in 4 is again discharged into the room from the air outlet 12. Reference numeral 2 is a control box containing a controller (not shown) for controlling the operation of the refrigerator and the blower. Such a configuration is the same as that of the device shown in FIG.

A feature of the present invention is that the control box 2 has a plurality of outside air introduction holes 3, which are formed in the front plate 10a of the duct case 10 by a metal plate or a metal plate lined with a heat insulating material 7. 3, an outside air inflow chamber 5 is defined so that the outside air entering through the outside air introduction holes 3, ... Enters the control box 2 through the upper end opening 5a of the outside air inflow chamber 5, and further the control box 2 The vent hole 4 provided on any one of the wall surfaces of the humidity detector 1 is configured to escape into the duct case 10, and the humidity detector 1 is housed in the outside air inflow chamber 5. Reference numeral 1a is a moisture sensitive portion made of a polymer film or the like, and 6 is a humidity control knob.

Effect According to the present invention, the installation location of the humidity detector is the outside air inflow chamber provided by further partitioning the inside of the control box located upstream of the blower in the duct case, and surrounding this control box. Since the space communicates with the outside air by sequentially passing through a plurality of openings with a much smaller area than the air inlet area, regardless of the negative pressure fluctuation in the duct case,
The airflow in the outside air inflow chamber is almost constant, and most of the inflowing outside air passes through the humidity sensitive portion of the humidity detector 1 or in the vicinity thereof. The outside air humidity can be accurately measured without increasing the temperature, and the heating effect of the dry air that has passed through the condenser 14 and has increased in temperature is hardly received.

Especially, if the wall surface of the outside air inflow chamber is covered with a heat insulating material,
This heat effect can be completely cut off to eliminate humidity control errors, and even in areas such as noodles where the drying process has a subtle effect on the taste of the product, good results can be obtained such that there is no variation in the product. be able to.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an example of a conventional device, FIG. 2 is a partial sectional explanatory view of an embodiment of the present invention seen from the front direction, and FIG. 3 is an AA sectional explanation of FIG. It is a figure.

Claims (2)

[Scope of utility model registration request] 1. A refrigerant evaporator of a refrigerator and an evaporator on a leeward side of the evaporator in a duct case having an air inlet and an air outlet and having a built-in blower, along a flow direction of air. A refrigerant condenser that reheats the dehumidified air that has passed therethrough is provided, and the wall surface inside the duct case from the refrigerant condenser to the air outlet surrounds the outside air introduction hole that opens to the wall surface, the refrigerator,
In a dehumidifying dryer having a control box having a vent hole communicating with the inside of the duct case while accommodating a controller for controlling the operation of a blower or the like, in the control box, the outside air introduction hole is further provided. The surrounding outside air inflow chamber is defined and formed, and the outside air inflow chamber is provided with an opening for opening the outside air inflow chamber into the control box, and a humidity detector is provided in the air flow path from the outside air introduction hole to the opening. A dehumidifying dryer characterized by being stored. 2. The dehumidifying dryer according to claim 1, wherein the outside air inflow chamber is covered with a heat insulating material.