JPH03236530A - Air conditioner - Google Patents

Abstract

PURPOSE:To prevent an electric heater device from being abnormally raised in its temperature by providing changeover dampers on the downstream sides of fan circuits for an evaporator and a condenser, and bipass-introducing evaporator fan circuit air into a condenser fan circuit, and further employing as an air cleaning filter any one of an evaporation filter and a condenser filter. CONSTITUTION:Where hot air is desired to be obtained, a first damper 1 opens toward a partition upper part opening 18a and a second damper 28 opens toward a partition lower part opening 18b. Hereby, living room air sucked from a unit front surface suction port 17a passes through an evaporator fan circuit 15 and through an upper bypass air passage 24 and flows into a condenser air fan circuit 16, and further flows together with the living room air sucked from a back surface air suction port 25 and is sent to a lower bypass air passage 29 at a condenser fan 20 and is heated by an electric heater device 30 supplied with power and is finally discharged from a front surface blow-off port 29a. Hereby, the air from the back surface air suction port 25 does not allow the amount of air passing through the heating device to be immediately lowered because the clogging across an air filter 26 is slower compared with an air cleaning filter 22, and the temperature of the heating device 30 is not abnormally raised, even though the air cleaning filter is clogged during heating operation.

Description

[Detailed Description of the Invention] Industrial Field of Application This invention 1 relates to an integrated air conditioner that performs local cooling, heating, and dehumidification for use in a unit living room. This shows the air conditioner unit. 2 is the evaporator 3 is the condenser 4 is the compression line 5 is the electric a
The evaporator air blower circuit 7 communicates with the air blowing lowers a and 7b which are provided in parallel, and is a damper that closes and opens the evaporator air blowing lower a. An electric heating device 10 is disposed on the way to the air blowing lower b of the air blower circuit 7. Reference numeral 11 indicates an evaporator fan, 12 indicates a condenser fan, and 13 indicates an air purifying function provided in front of the evaporator. The operation of the conventional air conditioner constructed as described above will be described below. When this air conditioner is used for cooling, the damper 9 (Table 2) is rotated to the position indicated by the broken line shown in Figure 2, and the cold air that passes through the evaporator air blower circuit 7 is discharged from the cold air side blowout lower a, giving the user a feeling of cold air. In addition, the condenser air is discharged to the air outlet 8a on the back side during heating.
Damper 9 (located at the position of the solid line shown in Figure 2) is located at the position of the solid line shown in Figure 2, and both the evaporator and condenser blower circuits use only air without refrigerant heat exchange. The air from the evaporator air blowing circuit 7 passes through the electric heating device 1O that generates heat through electricity, and is discharged to the usage-side blow-off lower b, providing a hot air path.In addition, during dehumidification, the air from the air-conditioning circuit 7 is the same as that during cooling. A damper 9 is located at the evaporator 2, and the evaporator fan 11 is rotated more slightly than during cooling operation to reduce the cooling capacity of the evaporator 2 and perform dehumidification.

Furthermore, even though the air in the living room is purified by the air purifying filter 13 in front of the evaporator 2 during the cold air, warm air, and dehumidification operations described above, the problem to be solved by the invention is not solved by the above configuration. Air purifying filter 13 that is more easily clogged than normal air filter 14
is located in the evaporator air blowing circuit 7.During heating operation, the airflow passing through the electric heating device 10 decreases due to clogging of the air purifying filter 13, and the temperature of the electric heating device itself and the outlet temperature rise abnormally, causing the protection device to operate. In view of the above problems, even if the air purifying filter becomes clogged during heating operation, the temperature of the electric heating device does not immediately rise abnormally, and the protection device is activated unnecessarily. Means for Solving the Problems In order to solve the above problems, the present invention (a. At the partition wall downstream of the blower in the evaporator air blow circuit that communicates with the evaporator air inlet, evaporator filter, and evaporator air outlet (cold air outlet), which are arranged adjacent to each other through a partition, A damper part that can be freely opened and closed is installed to switch all the blown air into either the cold air outlet on the front of the user side or the condenser blower circuit.On the back side of the unit, the air intake for the condenser is equipped with a filter for the condenser, and a damper part for the condenser. Each blower is installed
On the downstream side of the condenser blower, a condenser side branch air blower circuit is provided, which is equipped with a condenser air outlet, a hot air outlet, and a damper that can switch the branching of each outlet. An electric heating device is incorporated in the air blowing circuit that is introduced into the air conditioning unit, and either the evaporator filter or the condenser filter is used as an air purifying filter. Filter By switching the dampers installed in each of the condenser blower circuits, the following effects can be obtained during heating operation. An air blower with the same temperature as the living room that passed through the evaporator when the refrigeration cycle was not in use.This air is passed through the unit and introduced into the condenser air blower circuit without being blown out to the user side again. Configuring the circuit &-X Damper of the condenser air blower circuit Close the condenser air outlet.
By locating the air to the air outlet on the front of the unit, the air introduced from the evaporator blower circuit and the air sucked in from the condenser blower circuit's air suction port merge. By passing through the device, it is heated and provides a hot air path to the user. When using the air conditioner according to the present invention, even if an air purifying filter is used in either the evaporator or the condenser and becomes clogged, ventilation is ensured through the other regular air filter, and the electric heating device An embodiment of the present invention will be explained below with reference to FIG. 1. An embodiment of the present invention will be explained below with reference to FIG. An electric motor 21 having a shaft protruding from both the manual air blower circuit 15 and the condenser air blower circuit 16 and rotates each blower 1 east 20 coaxially.
Even if it is fixedly arranged on the partition wall 18, the evaporator air blowing circuit 15
Side force sentence: This corresponds to the front side 17a of the unit 17 on the user side.
Air purifying filter 22. , evaporator 3
1, Evaporator blower I'll, Evaporator blower circuit 1
A ventilation circuit is formed that reaches the air outlet 15a (hereinafter abbreviated as front cold air outlet) of No. 5. Evaporator blower 1
A freely rotatable damper 23 (hereinafter referred to as the first damper) is installed on the downstream side of the cooling air outlet 9 and in front of the front cold air outlet 15a.
An opening 18a (hereinafter referred to as the partition upper opening) is installed in the upper part of the partition wall 18 facing the front cold air outlet 15a across the damper 23, and the upper part of the condenser air blowing circuit 16 in the unit 17 is installed. A bypass ventilation passage 24 (hereinafter referred to as an upper bypass ventilation passage) is formed for passing through the evaporator air. The total amount of air to be delivered is the above-mentioned opening 18 at the top of the bulkhead.
Even if the structure is such that it passes through a, the upper bypass ventilation passage 24
Even if there is communication between the condenser air filter 26 and the condenser 27 located on the downstream side of the rear grille 25 that opens on the back side of the unit 1, and the second condenser blower circuit 16 Even if a blower circuit is formed that reaches the air blower outlet 16a (hereinafter referred to as the back heat radiation air outlet), a rotatable damper 28 (hereinafter referred to as An opening 18b (hereinafter referred to as the lower opening of the partition wall) is provided at the lower part of the partition wall 18 facing the rear heat radiation air outlet 16a, sandwiching this damper 28 (referred to as a second damper). The air passes through the lower part of the unit from the lower opening 18b of the partition wall and reaches the air outlet 29a (hereinafter referred to as the lower front outlet) located at the lower part of the front suction port 17a of the evaporator air blowing circuit provided on the front surface 17a of the unit 17. A bypass ventilation passage 29 (hereinafter referred to as a lower bypass ventilation passage) is formed.

Shape of the second damper 28 (upper back heat radiation air outlet 16a
It has a shape that completely closes the condenser blower 20.
Even though the entire amount of air sent out from the bulkhead is configured to pass through the lower opening 18b of the partition wall, the electric heating device 30 is disposed within the lower bypass ventilation passage 29a. When it is desired to obtain warm air (the first damper 23 opens toward the partition wall upper opening 18a side)
Although the damper 28 opens to the lower opening 18b of the partition wall, the air blowers of the evaporator and condenser can be rotated while the refrigeration cycle that circulates through the evaporator 31 and condenser 27 is stopped. Passing through the indoor aerodynamic evaporator ventilation circuit 15 sucked in from the port 17a,
Through the upper bypass ventilation passage 24, the condenser ventilation circuit 16
It also flows into the room air sucked in from the rear air suction port 25, is sent to the lower bypass ventilation passage 29 by the condenser blower 20, is heated by the energized electric heating device 30, and is discharged from the front lower air outlet 29a. be done. As a result, even if the air purifying filter 22 becomes clogged during heating operation, the ventilation from the rear air suction port 25 will continue to flow through the air filter 2.
Since the progress of clogging of the electric heating device 30 is slower than that of the air purifying filter 22, the air flow rate passing through the electric heating device 30 does not immediately decrease, the temperature of the electric heating device 30 does not rise abnormally, and the protection device is prevented from being activated unnecessarily. Even if the effect is obtained in the above embodiment, the same effect can be obtained even if the air outlet 29a is provided below the heat radiation air outlet 16a. As is clear, the present invention has a switching damper structure on the downstream side of each of the air blowing circuits for the evaporator and the condenser, so that air from the air blowing circuit for the evaporator is bypass-introduced into the air blowing circuit for the condenser. By using one of the filters as an air cleaning filter, even if the air cleaning filter is used in either the evaporator or the condenser and becomes clogged, ventilation of the other normal air filter is ensured, and the electric heating equipment Mums that have the effect of preventing abnormal temperature rises

[Brief explanation of drawings]

Fig. 1; L is a schematic vertical cross-sectional view of an air conditioning unit showing an embodiment of the present invention; Fig. 2 is a schematic longitudinal cross-sectional view of an integrated air conditioner showing a conventional example. 17...Air conditioning Machine unit, 15...Blower circuit for evaporator i16...Blower circuit for condenser l 23,2
8...Blower circuit branch switching dumbbell 15a...
Front cold air blowout is 16a... Rear heat radiation air blowout is 24
...Upper bypass ventilation duct 29...Lower bypass ventilation duct 29a...Lower front air outlet 4

Claims (1)

[Claims] In a single unit, the evaporator, evaporator air blower circuit, condenser, and condenser air blower circuit are arranged adjacent to each other through a partition, and the evaporator air inlet, evaporator filter, evaporator, blower, and evaporator air outlet are arranged adjacently through a partition wall. an openable and closable damper section that completely switches the blown air to either the cold air outlet on the front surface of the unit using side or the condenser air blowing circuit at the partition wall on the downstream side of the blower in the evaporator air blowing circuit that communicates with the evaporator air blowing circuit; A condenser air inlet, a condenser filter, a condenser, and a condenser blower are installed on the rear side of the unit.On the downstream side of the condenser blower, a condenser air outlet, a hot air outlet, and each A branch blower circuit on the condenser side is provided with a damper that can switch the outlet for branching, and an electric heating device is installed in the middle of the blower circuit introduced to the front of the unit in the branch blower circuit on the condenser side, and the filter for the evaporator or An air conditioner that has an air purifying function on either side of the condenser filter.