JP2626157B2 - Air conditioner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated air conditioner that is used in a unit living room and performs local cooling, heating and dehumidification.

FIG. 6 shows a conventional integrated air conditioner. 1 is an air conditioner unit, 2 is an evaporator, 3 is a condenser, and 6 is a partition separating an evaporator air blower circuit 7 and a condenser air blower circuit 8. Reference numeral 9 denotes an electric motor, which is fixed to the partition wall 6 and has shafts protruding from both the evaporator air blower circuit 7 and the condenser air blower circuit 8 to rotate each air blower coaxially.

The blower circuit 7 for the evaporator is the entire surface of the unit 1 on the user side.
In 1a, the evaporator 2, the evaporator blower 4, and the air outlet 7a of the evaporator blower circuit 7 (hereinafter referred to as the whole cool air outlet) extend from the air intake port 1a of the evaporator blower circuit 7 (hereinafter abbreviated as the whole suction port). ) Is formed. A rotatable damper 12 (hereinafter, abbreviated as a first damper) is provided downstream of the evaporator blower 4 and in front of the entire cool air outlet 7a, and faces the entire cool air outlet 7a with the damper 12 interposed therebetween. An opening 6a (hereinafter, referred to as a partition upper opening) is provided at an upper portion of the partition 6, and a bypass ventilation circuit 13 (hereinafter, upper bypass ventilation) for evaporator air that passes through an upper portion of the condenser ventilation circuit 8 in the unit 1. Road). The shape of the damper 12 is such that the entire cold air outlet 7a is completely closed, and the whole amount of air sent from the evaporator blower 4 passes through the partition upper opening 6a. On the downstream side of the upper bypass ventilation passage 13, the condenser 3 located on the downstream side of the rear grille 14 opening on the rear side of the unit 1.
Is in communication with A blower circuit corresponding to the air blower outlet 8a of the blower 5 for the condenser and the blower circuit 8 for the condenser (hereinafter, referred to as a back radiation air blowout outlet) is formed. A rotatable damper 15 (hereinafter, referred to as a second damper) is provided in the middle of the condenser blower circuit 8 at a position downstream of the condenser blower 5 and faces the rear heat radiation air outlet 8a with the damper 15 interposed therebetween. An opening 6b (hereinafter referred to as a partition lower opening) is provided at a lower portion of the partition 6. Further, the front suction of the evaporator air blower circuit provided on the front 1a of the unit 1 through the lower part of the unit from the partition lower opening 6b. A bypass ventilation passage 16 (hereinafter, referred to as a lower bypass ventilation passage) is formed to reach an air outlet 16a (hereinafter, referred to as a front lower outlet) located below the mouth 1a. 2nd damper
The shape of 15 is a shape that completely closes the back surface radiating air outlet 8a, and has a structure in which the entire amount of air sent from the condenser blower 5 passes through the above-described partition wall lower opening 6b. An electric heating device 17 is arranged in the lower bypass ventilation passage 16.

About the conventional air conditioner configured as above,
The operation will be described below. When this air conditioner is used for cooling, the first damper 12 and the second damper 15 are rotated to the positions indicated by solid lines in FIG. 6, and the cool air that has passed through the evaporator air blower circuit 7 flows from the cool air side outlet 7a. It is discharged and brings a feeling of cool wind to the user. The air blown out of the condenser is discharged to the outlet 8a on the back surface. On the other hand, during heating, the first damper 12 and the second
The damper 15 is rotated to the position indicated by the broken line in FIG. 6, and both the evaporator and condenser air blowing circuits 7 and 8 use only air blowing without refrigerant heat exchange. As a result, the room air sucked from the unit front inlet port 1a is supplied to the evaporator air blower circuit 7.
Through the upper bypass ventilation path 13, flows into the condenser ventilation circuit 8, merges with the room air sucked from the rear air intake port 14, and enters the lower bypass ventilation path 16 by the condenser ventilation 5. It is sent out, heated by the energized electric heating device 17, and discharged from the front outlet 16a.

SUMMARY OF THE INVENTION However, in the above-described configuration, the first damper 12 is abnormal in the first damper abnormal state, for example, when foreign matter that has entered from the entire cold air outlet 7a interferes with the rotation of the first damper 12. Is stopped at a position other than the solid line or the broken line in FIG. 1, the cooled air of the evaporator air blower circuit 7 and the warmed air of the condenser air blower circuit 8 are mixed on the first damper 12, Water droplets are generated on the surface of the first damper 12, and the water droplets are scattered to the outside from the cold air outlet 7a to wet the area.

Further, in a case where the second damper 15 is in an abnormal state, for example, when the second damper 15 is in a position other than either the solid line or the broken line in FIG. When stopped, the lower bypass ventilation path
The amount of air passing through the heating device 16 decreases, the amount of air passing through the heating device 17 decreases, the temperature of the heating device itself and the blowing temperature rise abnormally, and the heating device 17 has a disadvantage that it is apt to thermally deform around the heating device 17.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to prevent water leakage from occurring even when an abnormality occurs in a damper.

Another object of the present invention is to prevent thermal deformation around the electric heating device even if an abnormality occurs in the damper.

Means for Solving the Problems To solve the above problems, the present invention provides a compressor, an evaporator, a blower circuit and a condenser for an evaporator, and a blower circuit for a condenser, which are arranged adjacent to each other via a partition in an air conditioner unit. , Air inlet for evaporator, filter for evaporator, evaporator, blower,
In the partition wall on the downstream side of the blower in the evaporator blower circuit communicating with the evaporator air blowout port (cool air blowout port), the blown air is blown to one of the cool air blowout port on the front side of the unit use side and the condenser blower circuit. An openable and closable damper section for switching all branches, a position detecting means for detecting the position of the damper section, and a control means for controlling energization to the damper and the compressor based on a result of the detecting means, and a unit rear side. , Air inlet for condenser, filter for condenser, condenser,
A condenser blower is disposed, and a condenser-side branch blower circuit is provided downstream of the condenser blower, the condenser-side branch blower circuit having a condenser air blowout port, a hot air blowout port, and a damper portion capable of branching and switching each blowout port. In the condenser-side branch blower circuit, an electric heating device is incorporated in the blower circuit introduced into the front of the unit.

The present invention also provides a damper capable of branching and switching between the condenser air outlet, the hot air outlet, and each of the outlets, a position detecting means for detecting a position of the damper part, and the damper and the damper based on a result of the detecting means. It has control means for controlling energization to the electric heating device.

Operation The operation of the above means is as follows. When the damper stops at an irregular position due to the abnormality of the damper, the damper position detecting means informs the control means that the damper is not at the regular position, and the control means stops energizing the compressor. This reduces the temperature difference between the air in the evaporator air blower circuit and the air in the condenser air blower circuit around the damper no matter where the damper is located.Therefore, no water droplets are formed on the damper surface. Can prevent wetting.

Further, when the damper stops at an irregular position due to the abnormality of the damper, the damper position detecting means informs the control means that the damper is not at the regular position, and the control means stops energizing the electric heating device. Thus, even if the amount of air blown to the electric heating device is reduced due to the irregular position of the damper, the electric heating device can be stopped before thermal deformation around the electric heating device occurs.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

Since the schematic configuration of an air conditioner according to an embodiment of the present invention is the same as that of the conventional example, the first embodiment of the present invention will be described with reference to FIG. 6 and FIGS. FIG. 6 is an air conditioner of the present invention, FIG. 1 is a damper position detecting means,
FIG. 2 is a block diagram of the air conditioner of the present invention. 1
Is an air conditioner unit, 2 is an evaporator, 3 is a condenser, 6
Is a partition for separating the evaporator air blower circuit 7 and the condenser air blower circuit 8. Reference numeral 9 denotes an electric motor, the shaft of which protrudes from both the evaporator air blower circuit 7 and the condenser air blower circuit 8 fixed to the partition wall 6, and rotates each blower coaxially. Reference numeral 12 denotes a first damper, 12a denotes first damper position detecting means, and 6a denotes an upper opening of the partition wall. Reference numeral 13 denotes an upper bypass ventilation path, and reference numeral 8a denotes a rear heat radiation air outlet. Reference numeral 15 denotes a second damper, 15a denotes a second damper position detecting means, and 6b denotes a partition lower opening. 16
a is a front lower outlet, and 16 is a lower bypass ventilation path.
An electric heating device 17 is arranged in the lower bypass ventilation passage 16. Reference numeral 18 denotes a claw that rotates in conjunction with the first damper, and turns on / off the micro switch 19. 21 is a control means, 12b is a first damper drive relay, and 20 is a compressor.

The control operation in the above configuration will be described with reference to the flowchart of FIG.

When the cold air operation is started, the damper energization time measurement timer is reset (step 22), and then the damper drive relay 12b is closed to energize the first damper 12 to rotate (step 23).
The claw 18 which rotates in conjunction with the first damper 12 eventually closes the microswitch 19 and causes the control means 21 to control the first damper 18.
12 indicates that it has reached the position indicated by the solid line in FIG. 6, that is, the normal position. The normal position is determined (step 25).
In the case of "S", the power supply to the first damper 12 is stopped, and the first damper 12 stops at the regular position (step 26). In the case of "NO", the process returns to step 23, and the first damper 12 rotates until it comes to the normal position. The control means 21 constantly measures the energizing time of the first damper 12, and when the first damper 12 cannot move at an irregular position due to an abnormality, the energizing time is set to the set time T1.
Is it over? Is determined to be “YES” (step 24),
The compressor 20 is stopped (step 27).

Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a block diagram of the air conditioner of the present invention. 15b is a relay for driving the second damper, and 17a is a relay for driving the electric heating device.

The control operation in the above configuration will be described with reference to the flowchart of FIG.

When the heating operation is started, the damper energization time measurement timer is reset (step 28), and then the damper drive relay 15b is closed to energize and rotate the second damper 15 (step 29).
The claw 18 which rotates in conjunction with the second damper 15 eventually closes the microswitch 19 to control means 21 to provide the second damper.
15 indicates that it has reached the position indicated by the broken line in FIG. 6, that is, the normal position. The normal position is determined (step 31).
In the case of "S", the power supply to the second damper 15 is stopped, and the second damper 15 stops at the regular position (step 32). In the case of "NO", the process returns to step 29, and the second damper 15 rotates until it comes to the normal position. The control means 21 constantly measures the energizing time of the second damper 15, and if the second damper 15 cannot move at an irregular position due to an abnormality, the energizing time is set to the set time T2.
Is it over? Is determined to be "YES" (step 30),
The electric heating device 17 is stopped (step 33).

As is clear from the above embodiment, the present invention provides a position detecting means for detecting the position of the damper part and a control means for controlling the energization to the damper and the compressor based on the result of the detecting means. When the damper is abnormal, no water drop is generated on the surface of the damper regardless of the position of the damper, and it is possible to prevent the water drop from scattering and getting wet.

Further, by providing a position detecting means for detecting the position of the damper unit and a control means for controlling the energization of the damper and the electric heating device based on the result of the detecting means, the damper can be placed in an irregular position when the damper is abnormal. Even if the amount of air blown to the electric heating device is reduced, the electric heating device can be stopped before thermal deformation around the electric heating device occurs.

[Brief description of the drawings]

FIG. 1 is a perspective view of a damper position detecting means of an air conditioner in one embodiment of the present invention, FIG. 2 is a block diagram of the air conditioner, FIG. 3 is a flowchart showing the operation of the air conditioner, FIG. FIG. 4 is a block diagram of an air conditioner according to a second embodiment of the present invention, FIG. 5 is a flowchart showing the operation of the air conditioner, and FIG. 6 is an air conditioner according to a conventional example and one embodiment of the present invention. FIG. DESCRIPTION OF SYMBOLS 1 ... Air conditioner unit, 2 ... Evaporator, 3 ... Condenser, 6 ... Partition wall, 7 ... Blower circuit for evaporator, 8 ... Blower circuit for condenser, 12 ... 1st damper, 15 ... ... The second damper.

Claims (2)

(57) [Claims] A compressor, an evaporator, a blower circuit for an evaporator, a condenser, and a blower circuit for a condenser are arranged adjacent to each other via a partition in a single unit, and an air suction port for an evaporator, a filter for an evaporator, At the partition wall downstream of the blower in the evaporator blower circuit that connects the evaporator, the blower, and the evaporator air blowout port, the blown air is blown to one of the cool air blowout port on the front side of the unit use side and the blower circuit for the condenser. Air that has an openable and closable damper unit that switches all branches, a position detection unit that detects a position of the damper unit, and a control unit that controls energization to the damper unit and the compressor based on a detection result of the detection unit. Harmony machine. 2. An air inlet for a condenser on the back side of the unit.
A condenser filter, a condenser, and a condenser blower are respectively provided.A condenser air blowout port and a hot air blowout port are provided downstream of the condenser blower, and a damper portion capable of branching and switching each blowout port is provided. An electric heating device is incorporated in the blower circuit to be introduced into the front of the unit, and a position detecting means for detecting the position of the damper portion, and a detection result of the detecting device is used for the damper portion and the electric heating device. The air conditioner according to claim 1, further comprising control means for controlling the energization of the air conditioner.