JP3035950B2 - 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.

2. Description of the Related Art FIG. 2 shows a conventional integrated air conditioner. 1 is an air conditioner unit, 2 is an evaporator, 3 is a condenser, 4 is a compressor, 5 is an electric motor, 6 is a blower circuit 7 for an evaporator.
And a partition wall for partitioning the blower circuit 8 for the condenser, and the blower circuit 7 for the evaporator communicate with the outlets 7a and 7b provided in parallel. 9 is a damper for closing and opening the evaporator air outlet 7a. An electric heating device 10 is provided on the way to the air outlet 7b of the evaporator blower circuit 7. 11 is a fan for an evaporator, 12 is a fan for a condenser, 13 is a filter having an air cleaning function provided in front of the evaporator (hereinafter referred to as an air cleaning filter), and 14 is a normal filter provided in front of the condenser. It is an air filter.

About the conventional air conditioner configured as above,
The operation will be described below. When this air conditioner is used for cooling, the damper 9 is rotated to the position shown by the broken line in FIG. 2, and the cool air that has passed through the evaporator air blower circuit 7 is discharged from the cool air side outlet 7a to provide the user with a sense of cool air. Bring. The air blown out of the condenser is discharged to the outlet 8a on the back surface. On the other hand, at the time of heating, the damper 9 is located at the position indicated by the solid line in FIG. 2, and both the evaporator and condenser air blow circuits 7 and 8 use only air without refrigerant heat exchange, and the air from the condenser air blow circuit is used. Is blown out as a mere circulating wind from the outlet 8a, and the wind from the evaporator air blower circuit 7 passes through the electric heating device 10 which has been heated and discharged, and is discharged to the use side outlet 7b to give a feeling of warm air.
In addition, at the time of dehumidification, the damper 9 is provided at the same position as in the above-mentioned cooling operation, and the evaporator fan 11 is rotated slightly weaker than during the cooling operation, whereby the cooling capacity of the evaporator 2 is reduced to perform dehumidification. During the above-mentioned cooling, heating, and dehumidifying operations, the air in the living room is cleaned by the air cleaning filter 13 in front of the evaporator 2.

Problems to be Solved by the Invention However, in the following configuration, the air purifying filter 13 that is more likely to be clogged than the ordinary air filter 14 is located in the evaporator air blower circuit 7, so that the air purifying filter 13 Due to the clogging, the amount of air passing through the electric heating device 10 is reduced, and the electric heating device itself and the outlet temperature are abnormally increased, so that the protection device is easily activated.

In view of the above problems, an object of the present invention is to prevent the temperature of the electric heating device from abnormally rising immediately even when the air purification filter is clogged during the heating operation, and to prevent the protection device from being activated unnecessarily. Things.

Means for Solving the Problems In order to solve the above problems, the present invention provides an evaporator, an air blower circuit for an evaporator and a condenser, and an air blower circuit for a condenser arranged adjacent to each other via a partition in an air conditioning unit. A suction port, an evaporator filter, an evaporator, an air blower, an evaporator air blowout circuit (a cool air blowout port) communicating with the evaporator airflow circuit, the partition wall downstream of the air blower, and a cold air blowout port on the front side of the unit use side; An openable / closable damper unit for switching all the blown air is provided in any one of the condenser blower circuits, and a condenser air suction port, a condenser filter, a condenser, and a condenser blower are provided on the unit rear side. A condenser-side branch blower circuit is provided downstream of the condenser blower, the condenser-side branch blower circuit including a condenser air outlet, a warm air outlet, and a damper capable of branching and switching between each outlet. An electric heating device is installed in the middle of the blower circuit introduced into the front of the unit in the branch blower circuit, and one of the filter for the evaporator and the filter for the condenser is used as an air cleaning filter.

Effects By the above means, the following effects can be obtained during the heating operation by switching the dampers provided in the evaporator ventilation circuit and the condenser ventilation circuit of the air conditioning unit according to the present invention. At the time of heating use, the evaporator air blower circuit damper is set to the position where the front air outlet of the unit use side is closed, and air with the same temperature as the living room that passed through the evaporator without using the refrigeration cycle returns to the use side. A blower circuit for introducing the air into the blower circuit for the condenser without blowing the air through the unit is formed. On the other hand, the damper of the condenser blower circuit closes the condenser air blowout port and sets the position to be blown to the air blowout port on the front side of the unit use side, so that the air introduced from the evaporator blower circuit and the condenser blower can be removed. The air sucked in from the air suction port of the air blowing circuit merges and passes through the electric heating device in an energized state, so that the air is overheated, giving the user a feeling of warm air. When the air conditioner according to the present invention is used, even when an air purifying filter is used in one of the evaporator and the condenser and clogging occurs, ventilation of the other normal air filter is secured, and the electric heating device is used. Prevent abnormal temperature rise.

Embodiment An embodiment of the present invention will be described below with reference to FIG. The evaporator air blower circuit 15 and the condenser air blower circuit 16 are separated by a partition wall 18 in the center of the unit 17, and the shafts protrude to both the evaporator air blower circuit 15 and the condenser air blower circuit 16. A rotating electric motor 21 is fixedly arranged on the partition wall 18. The evaporator air blower circuit 15 side is the unit 17
The air purifying filter 22, the evaporator 31, the evaporator air blower 19, and the air blowing of the evaporator air blower circuit 15 from the air suction port 17a of the evaporator air blower circuit 15 (hereinafter abbreviated as the front air inlet). An air blowing circuit is formed to reach the outlet 15a (hereinafter, abbreviated as front cold air outlet). Evaporator blower
A rotatable damper 23 (hereinafter referred to as a first damper) is provided downstream of the front cold air outlet 15a on the downstream side of 19,
An opening 18a (hereinafter, referred to as a partition upper opening) is provided at an upper portion of the partition 18 opposite to the front cool air outlet 15a, and penetrates an upper portion of the condenser blowing circuit 16 in the unit 17 therebetween. An evaporator air bypass passage 24 (hereinafter referred to as an upper bypass passage) is formed. The shape of the damper 23 is
It has a structure in which the front cool air outlet 15a is completely closed, and the entire amount of air sent from the evaporator blower 19 passes through the partition wall upper opening 18a. The downstream side of the upper bypass air passage 24 is communicated between a condenser air filter 26 and a condenser 27 located on the downstream side of a back grill 25 opened on the back of the unit 1. Further, a blower circuit is formed which reaches the blower 20 for the condenser and the air outlet 16a of the blower circuit 16 for the condenser (hereinafter, referred to as a back radiation air outlet). A rotatable damper 28 (hereinafter, referred to as a second damper) is provided in the middle of the condenser blower circuit 16 at a position downstream of the condenser blower 20 and faces the rear heat radiation air outlet 16a with the damper 28 interposed therebetween. An opening 18b is provided below the partition 18 (hereinafter, referred to as a partition lower opening), and further, the front suction of the evaporator air blowing circuit provided in the front 17a of the unit 17 through the lower part of the unit from the partition lower opening 18b. A bypass ventilation passage 29 (hereinafter, referred to as a lower bypass ventilation passage) is formed to reach an air outlet 29a (hereinafter, referred to as a front lower outlet) located below the opening 17a. The shape of the second damper 28 is a shape that completely closes the rear heat radiation air outlet 16a, and has a structure in which the entire amount of air sent from the condenser blower 20 passes through the partition wall lower opening 18b. ing. An electric heating device 30 is arranged in the lower bypass ventilation passage 29.

With this configuration, when a user wants to obtain warm air, the first damper 23 opens to the partition upper opening 18a side, and the second damper 28 opens to the partition lower opening 18b. Evaporator 31,
With the refrigeration cycle circulating through the condenser 27 stopped, the respective blowers of the evaporator and the condenser are rotated. Thereby, the room air sucked from the unit front suction port 17a passes through the evaporator ventilation circuit 15, passes through the upper bypass ventilation path 24, flows into the condenser ventilation circuit 16, and from the rear air suction port 25. The air is merged with the drawn room air, sent out to the lower bypass ventilation passage 29 by the condenser blower 20, heated by the energized electric heating device 30, and discharged from the front lower outlet 29a. As a result, even if the air purifying filter 22 is clogged during the heating operation, the air flow from the rear air suction port 25 is slower than the air purifying filter 22 because the clogging progress of the air filter 26 is slower, so that the air volume passing through the electric heating device immediately increases. It does not lower, the temperature of the electric heating device 30 does not rise abnormally, and an effect of preventing the protection device from being activated unnecessarily can be obtained.

In the above-described embodiment, the outlet 29a is provided on the front surface. However, the same effect can be obtained by providing the outlet 29a below the radiating air outlet 16a.

As is clear from the above embodiments, the present invention has a switching damper structure on the downstream side of each of the evaporator and condenser blower circuits, and bypasses the evaporator blower circuit air to the condenser blower circuit. When one of the evaporator filter and the condenser filter is used as an air purifying filter, the air purifying filter is used in either the evaporator or the condenser, and even when clogging occurs, the other normal air filter is used. Ventilation is assured, which has the effect of preventing an abnormal temperature rise of the electric heating device.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of an air conditioner showing one embodiment of the present invention, and FIG. 2 is a schematic vertical sectional view of an integrated air conditioner showing a conventional example. 17 …… Air conditioner unit, 15 …… Blower circuit for evaporator,
16 ... Blower circuit for condenser, 23,28 ... Bumper for branch switch of blower circuit, 15a ... Front cool air outlet, 16a ... Backside radiated air outlet, 24 ... Top bypass ventilation path, 29 ... Bottom bypass Ventilation passage, 29a …… Front lower outlet.

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shingo Hamada 1006 Kazuma Kadoma, Kadoma City, Osaka Inside Matsushita Electric Industrial Co., Ltd. (56) References Japanese Utility Model Sho 60-135538 (JP, U) Japanese Utility Model Sho 52- 47887 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1/02 311

Claims (1)

(57) [Claims] 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 inlet for an evaporator, a filter for an evaporator, an evaporator, In the partition wall on the downstream side of the blower in the blower circuit for the evaporator that communicates the blower and the air blowout port for the evaporator, all the blown air is switched to any of the air blowout port for the evaporator and the blower circuit for the condenser. An openable and closable damper part is provided, and on the back side of the unit, a condenser air intake port, a condenser filter, a condenser, and a condenser blower are arranged, respectively.
On the downstream side of the condenser blower, a condenser-side branch blower circuit provided with a condenser air blowout port and a hot air blowout port and a damper capable of branching and switching each blowout port is provided. An air conditioner wherein an electric heating device is incorporated in the middle of a blower circuit introduced into the front of the unit, and at least one of the evaporator filter and the condenser filter is an air cleaning filter.