JPH07293934A - Air conditioner - Google Patents

Abstract

PURPOSE:To prevent a temperature fall at the time of dehumidification and to make an air flow loss at an air intake very small by a method wherein an air interrupting plate provided in front of a continuous part of two upper and lower heat exchangers is moved to the center, upward and downward selectively and the flow rate of air passing through the two heat exchangers is controlled at the time of a dehumidifying operation. CONSTITUTION:In front of the continuous part 6 of an upper heat exchanger 5 and a lower heat exchanger 7, one end of a flat-plate-shaped air interrupting plate 11 having a lateral width corresponding to the upper heat exchanger 5 and the lower heat exchanger 7 and a required longitudinal width is fitted axially to a shaft of a drive part 10 constructed of a DC motor having reduction gears built in and others and the other end of the plate is supported axially on the lateral side of a case body 1 so that it is rotatable. The air interrupting plate 11 is rotated upward or downward selectively with the normal or reverse revolution of the drive part 10. By an air resistance caused by this air interrupting plate 11, the flow rate of the air passing through the upper heat exchanger 5 or the lower heat exchanger 7 is made variable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to an internal structure of an indoor unit having a condenser and an evaporator as heat exchangers for dehumidification.

[0002]

2. Description of the Related Art In an indoor unit of a heat pump type air conditioner, conventional general dehumidification uses all heat exchangers provided in the indoor unit as an evaporator. There was a problem that the internal heat was absorbed and the same phenomenon as in the case of weak cooling occurred, resulting in a decrease in room temperature. For this reason, methods such as intermittent operation of the air conditioner to reduce the degree of decrease in room temperature are used, but the actual situation is that it is not a countermeasure for an essential problem. Therefore, as a countermeasure against this, the heat exchanger at the time of dehumidification is divided into an evaporator and a condenser, and each is arranged in series at the air intake port on the front of the indoor unit, and air is taken in from this air intake port. There is a device in which air passing through a heat exchanger is blown out from an outlet so that the temperature in the room is kept constant without lowering. However, even in an indoor unit equipped with such a dehumidifying method, it is necessary to change the heat exchange amount between each evaporator and condenser in order to cool the room temperature and maintain the isothermal or warm temperature. Actually, the realization was impossible from various aspects. Under these circumstances, we implemented an indoor unit of an air conditioner that can control cooling, isothermal or warming at room temperature with a relatively simple structure.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to prevent a decrease in temperature at the time of dehumidification, and to minimize an air flow rate loss at an air intake port. It is an object of the present invention to provide an air conditioner that keeps the temperature to a certain level and keeps it at a slightly cold temperature, isothermal temperature or slightly warm temperature.

[0004]

In order to solve the above-mentioned problems, the first invention of the present application is to provide a suction port at the upper part of a housing,
An upper heat exchanger having an upper portion inclined to the rear of the air passage in an air passage connecting to the air outlet at the lower portion of the housing, and a lower portion of the upper heat exchanger, which are continuously provided upright. An indoor heat exchanger consisting of a lower heat exchanger, and a blower or the like for sending the air heat-exchanged in the indoor heat exchanger to the air outlet,
In a configuration in which the upper heat exchanger is used as a condenser and the lower heat exchanger is used as an evaporator during dehumidification operation,
In front of the connecting portion of the upper and lower two heat exchangers, an air shielding plate is provided, one end of which is axially attached to the shaft of the drive portion and the other end of which is axially supported laterally of the housing. By selectively moving the shield plate to the center, the upper side, and the lower side, the temperature of the air blown out from the air outlet can be varied by controlling the flow rate of the air passing through the upper and lower heat exchangers during the dehumidifying operation. It is characterized by A second invention of the present application relates to the first invention of the present application, characterized in that the air shielding plate is operated following the set temperature.

[0005]

According to the above construction, the driving section operates in conjunction with the room temperature set during dehumidification, so that the air shield plate moves to the front center of the continuous section and the condenser (upper part) at the time of isothermal setting. An air intake passage is formed on the entire surface of the heat exchanger) and the evaporator (lower heat exchanger), and the flow rate of air passing through each heat exchanger is balanced so that the temperature of the air blown out from the air outlet becomes equal. . On the other hand, when the cooling is set slightly, the air shield plate moves to the front upper side of the connecting portion to limit the air intake flow rate passing through the condenser side, whereby the air flow rate passing through each heat exchanger is reduced. As a result of imbalance, the temperature of the air blown out of the air outlet drops slightly and the room temperature becomes cold. On the other hand, when the warmth is set slightly, the air shield plate moves to the lower front of the connecting part to limit the air intake flow rate on the evaporator side, which causes an unbalanced air flow rate through each heat exchanger. Then, the temperature of the air blown from the air outlet slightly rises, and the room temperature becomes warm. And
The air shield plate selectively rotates with the rotation of the drive unit linked to the room temperature, and automatically controls the flow rate of the air sucked through the condenser and the evaporator to maintain the set room temperature at all times.

[0006]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing a front panel of an indoor unit and a main part of a housing, and FIG. 2 is a side sectional view showing a front grill of the front panel and the housing of FIG. 1, with respect to room temperature during dehumidification. FIG. 3 is a side sectional view of FIG. 2, showing a state where the temperature is set to be slightly cold relative to room temperature during dehumidification, and FIG. 4 is a side sectional view of FIG. 2 during dehumidification. This shows a state in which the temperature is set to be slightly warmer than room temperature.
As shown in the figure, in this indoor unit body, as in the conventional case, an exterior component is constituted by a housing 1, a front panel 2, and a front grill 3,
Inside the casing 1, an upper heat exchanger 5 having an upper portion inclined rearward so as to correspond to an intake port of an air passage in an upper front portion of the front grill 3 via an air filter 4, and the upper portion thereof. A lower part which is connected to a lower part of the heat exchanger 5 through a connecting part 6 and which stands substantially vertically so as to correspond to an intake port of an air passage at the lower front part of the front grille 3 through the air filter 4. A heat exchanger 7 is provided, and during the dehumidifying operation, the upper heat exchanger 5 functions as a condenser and the lower heat exchanger 7 functions as an evaporator. Then, an air passage including a blower 8 made of a cross flow fan or the like is formed on the back surface so that air is blown out from an air outlet 9 opened from the lower part of the front surface to the bottom surface.

In front of the connecting portion 6 connecting the upper heat exchanger 5 and the lower heat exchanger 7, for example, is a driving portion 10 composed of a DC motor having a speed reducer built therein. On the shaft, one end of a flat plate-shaped air shield plate 11 having a width corresponding to the upper heat exchanger 5 and the lower heat exchanger 7 and a required vertical width is axially attached, and the other end is the casing 1 Is rotatably supported on the side surface of the air shield 11, and the air shield 11 is selectively rotated upward or downward with the forward rotation or the reverse rotation of the drive unit 10. Due to the air resistance of the air shield plate 11, The upper heat exchanger 5 or the lower heat exchanger 7
The flow rate of air passing through is variable. What
When the room temperature is equal to the room temperature setting in the dehumidifying mode, the operation of the driving unit 10 is performed by the control circuit and the temperature sensor built in the indoor unit main body. If the room temperature is higher than the room temperature setting, the air shield plate 11 is moved forward of the upper heat exchanger 5, and if the room temperature is lower than the room temperature setting, The air shield plate 11 is moved to the front of the lower heat exchange 7.

In the above structure, during the dehumidifying operation, the air shielding plate 11 rotates to shield a part of the upper heat exchanger (condenser) 5 or the lower heat exchanger (evaporator) 7 in front of the air. By doing so, the flow rate of the air passing therethrough increases or decreases, which causes an imbalance in the amount of heat exchange between the upper heat exchanger 5 and the lower heat exchanger 7, and this action causes the air blow to be increased. The temperature of the air blown from the outlet 9 rises or falls. Therefore, during dehumidifying operation,
When the temperature is the same as room temperature, the air shield plate 11 is positioned in front of the connecting portion 6 so that the air passage passing through the upper heat exchanger 5 and the lower heat exchanger 7 is fully opened. When the normal operation is performed to keep the room temperature at an equal temperature and the room temperature is slightly cooled from the room temperature, the air shield plate 11 moves to the front of the upper heat exchanger 5 to move the upper heat exchanger 5 to the upper heat exchanger 5. The flow rate of the air passing through is reduced, the temperature of the air blown from the air outlet 9 is lowered, and the room temperature is lowered. When the temperature is slightly warmer than room temperature, the air shielding plate 11 moves in front of the lower heat exchanger 7 so that the flow rate of air passing through the lower heat exchanger 7 is reduced and the air outlet is reduced. The temperature of the air blown from 9 rises and the room temperature rises.

[0009]

As described above, according to the present invention,
During normal cooling and heating operations, since the air shielding plate is arranged in front of the connecting portion provided at the connection point between the upper heat exchanger and the lower heat exchanger, the air intake passage is not blocked,
Therefore, the same efficiency as before can be obtained without affecting the heat exchange amount, and at the time of dehumidifying operation, a part of the air intake passage of either the upper heat exchanger (condenser) or the lower heat exchanger (evaporator) can be used. By closing the air shield plate, the air heat exchange amount becomes unbalanced and the set room temperature is kept constant, which is simpler and easier to manufacture than the other method that switches and controls the flow path of the refrigerant. The cost can be kept low.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part showing an air shielding plate arranged between a front panel and a housing of an air conditioner (indoor unit) applied to an embodiment of the present invention.

2 is a side cross-sectional view showing an air passage in which a front grill is attached to the front panel and the housing of FIG. 1, and shows a state in which the room temperature during dehumidification is set to be isothermal.

FIG. 3 is a side sectional view of FIG. 2, showing a state in which the room temperature during dehumidification is set to be slightly cold.

FIG. 4 is a side sectional view of FIG. 2, showing a state in which the room temperature during dehumidification is set to be slightly warm.

[Explanation of symbols]

 1 Case 2 Front Panel 3 Front Grill 4 Air Filter 5 Upper Heat Exchanger 6 Connection Part 7 Lower Heat Exchanger 8 Blower 9 Air Outlet 10 Drive Unit 11 Air Shielding Plate

Claims (2)

[Claims] 1. An upper heat exchanger having an upper part inclined to the rear of the air passage in an air passage connecting an inlet of the upper part of the casing and an outlet of the lower part of the same, and an upper heat exchanger of the upper heat exchanger. Dehumidification is provided by providing an indoor heat exchanger consisting of a lower heat exchanger that is continuously installed in the lower part and is erected almost vertically, and a blower that sends out the air that has undergone heat exchange in the indoor heat exchanger to the outlet. In the one in which the upper heat exchanger is used as a condenser and the lower heat exchanger is used as an evaporator during operation, in front of the connecting portion of the upper and lower two heat exchangers, one end is used as a shaft of the driving portion. An air shield plate, which is axially attached and has the other end thereof axially supported on the side of the casing, is provided. By selectively moving the air shield plate to the center, the upper side, and the lower side, it is possible to reduce The temperature of the air blown from the air outlet is controlled by controlling the flow rate of air passing through the upper and lower heat exchangers. An air conditioner characterized by varying degrees. 2. The air conditioner according to claim 1, wherein the air shield plate is operated by following a set temperature.