JPS5810652B2 - dehumidifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dehumidifier including a compressor, a condenser, and an evaporator, and particularly to a dehumidifier that can effectively dehumidify even in low temperature and high humidity conditions.

An embodiment of the present invention will be described below with reference to the drawings.

In Fig. 1, 1 is a dehumidifier main body that can switch between dehumidification in high temperature and high humidity conditions and dehumidification in low temperature and high humidity conditions, and the interior is vertically divided by a partition plate 2 into a user side chamber 3 and a heat source side chamber 4. .

An air outlet 5 is formed in the upper front of the user side chamber 3, and an air suction port 6 is formed in the lower front and lower sides,
A drum-shaped evaporator 7 with needle-like fins faces this suction port 6.
A blower casing 12 is disposed on the exposure tray 8, and above the evaporator 7 is a blower casing 12 consisting of a nozzle plate 9, a spiral plate 10, and a top plate 11 of the main body 1, and a motor 13 disposed within the casing 12.
A user-side blower consisting of a centrifugal multi-blade impeller 14 driven by a centrifugal multi-blade impeller 14 is provided.

In addition, an air outlet 15 is formed at the upper part of the back surface of the heat source side chamber 4, and an air suction port 16 is formed at the lower part of the back surface. A heat source side blower consisting of a centrifugal multi-blade impeller 19 driven by a motor 13 is provided, and a second
As shown in the figure, a compressor 21 which is connected in an annular manner to the condenser 17, the capillary tube 20, and the evaporator 7 and forms one element of the refrigeration cycle is also provided.

Therefore, the above dehumidification device is installed in the user side room 3 as shown in Fig. 3.
A back plate 23 is removably attached to the back opening 22 of the main body, and an auxiliary cover plate 24 is detachably attached to the back of the main body so as to communicate the back opening 22 and the air outlet 15.

Furthermore, as shown in FIG.
4A, in which the door of the window 26 is left half-open and the main body 1 is pulled out and positioned so that the air outlet 15 and air inlet 16 of the heat source side chamber 4 face outside. The installation mode and the window 26 when the main body 1 is pulled into the room
With the door fully closed, the air suction port 16 of the heat source side chamber 4 communicates with the indoor room, and the attached auxiliary cover plate 24 is located inside the door. The main body 1 is fixed in a mounting frame 25 so that it can be drawn out.

Therefore, in the first installation mode of the main body 1 shown in FIG.
During the first dehumidification operation when the back plate 24 shown in Figure A is attached, indoor air is sucked in through the air suction port 16, exchanges heat with the evaporator 7, is cooled, and is returned to the room through the air outlet 5 through the air circulation path. A and an air circulation path B are formed in which outdoor air is sucked in from the air suction port 16, exchanges heat with the condenser 17, radiates heat, and is returned to the room from the blow-off port 15.

This first dehumidification effect is shown in a Mollier diagram as abcd in FIG.

Next, in the second installation mode of the main body 1 shown in Figure 4, during the second dehumidification operation in which the back plate 23 is removed and the auxiliary cover plate 24 is attached as shown in Figure 1, the indoor air is An air distribution path A in which indoor air is sucked in from the air suction port 6, exchanges heat with the evaporator γ, and is returned indoors from the air outlet 5; The high-temperature air heated by the heat exchange is transferred to the spiral plate 10 of the ventilation casing 12 and the side plate 3 of the utilization side chamber 3 without passing through the evaporator 7.
A, as shown in FIG. An air circulation path is formed from 5 to the room.

This second dehumidifying action is different from the first dehumidifying action at a room temperature of 25C.
This is carried out when the temperature is high and humid in the range of 35°C, whereas it is carried out when the room temperature is low and humid in the range of 15 to 25°C, which is indicated by efij in the Mollier diagram of FIG.

If the first dehumidifying action is performed at the same low temperature and high humidity, the Mollier diagram shows efgh, and the evaporator 7 temperature becomes 15° to 5°C, freezing the evaporator 7, blocking ventilation and making dehumidifying operation impossible.
In the second dehumidifying action according to the present invention, a portion of the high-temperature air that has passed through the condenser 17 heats the evaporator 7, so that the evaporator γ temperature increases and dehumidifying operation can be performed without any trouble.

It should be noted that the present invention is not limited to the above embodiment, but is
It is also applied to a dehumidifying device as shown in the figure.

That is, when the temperature is low and humid, by switching the dampers 27 and 28 as shown by the solid line, indoor air is transferred to the user side from the air suction hole 29 through the continuous flow through the air blower 31 to the condenser 17 through the continuous flow through the air 32 to the user side, as shown by the dashed line arrow. An air circulation path C that flows with the air outlet 33 on the side, and a part of the high temperature air heated by the condenser 17 in this path is communicated with the air flowing through the air outlet 34 through the evaporator 7 and returned to the room from the air outlet 33. An air circulation path A is formed in which indoor air is sucked in from the air suction port 29, directly exchanges heat with the evaporator 7, and then returned to the room from the air outlet 33.During high temperature and humidity, dampers 27 and 28 are connected to the broken line. By switching as shown in the figure, as shown by the broken line arrow, outdoor air flows through the air inlet 35 on the heat source side - air blower 31 - condenser 17 - air outlet 36 on the heat source side, and indoor air flows through the air circulation path B. An air circulation path A that flows through the port 29, the evaporator 7, the blower 37, and the air outlet 33 is formed.

The present invention is configured as described above, and the evaporator is heated by a portion of the high-temperature air heated in the condenser, increasing the evaporation temperature, preventing the evaporator from freezing at low temperatures, and dehumidifying without any trouble. In addition, since not all of the high-temperature air passes through the evaporator, the amount of dehumidification is not reduced, and other great effects are achieved.

[Brief explanation of drawings]

Fig. 1A 20 is a vertical cross-sectional view of the main part showing different operating states of an embodiment of the present invention, Fig. 1C is a cross-sectional view of the main part in Fig. Figure 3 is an exploded perspective view of the same case, Figure 4 is a side view showing different installation and working conditions of the same case, and Figure 5 is a Mollier diagram showing the action of the same case. , FIG. 6 is a vertical sectional view of a main part showing another embodiment of the present invention. 7... Evaporator, 17... Condenser, A.
...Third air circulation path, C...First air circulation path, D...Second air circulation path.

Claims (1)

[Claims] 1. A first air circulation path that exchanges heat with indoor air with a condenser and returns the high-temperature air heated by the heat exchange into the room without passing through the evaporator, and a part of the high-temperature air that passes through the evaporator into the room. A dehumidification device comprising: a second air circulation path that causes room air to be returned to the room; and a third air circulation path that causes room air to exchange heat with an evaporator and return indoor air without passing through a condenser.