JPH01196432A - Airconditioner - Google Patents

Abstract

PURPOSE:To make it possible to carry out heat recovery during ventilation in terms of an outdoor heat exchanger, by installing a communication section between an indoor heat exchanger-built in block and an outdoor heat exchanger-built in block, forcing ventilation air from indoors to partially pass through an outdoor heat exchanger so as to discharge exhaust air, and introducing an open air so as to carry out ventilation. CONSTITUTION:A supplied air 8 either cooled or heated by an indoor heat exchanger 2 is returned to an airconditioner 1 as a post ventilation air equivalent to an indoor load, and it is divided into an exhaust air 12, which passes through a damper 7A and an outdoor heat exchanger 3 by an exhaust fan 6, and a circulation air 13, which is supplied by an air supply fan 4 together with an open air 10 which has passed through a damper 7B. The exhaust air 12, when discharged, promotes the condensation of an refrigerant in the case of cooling operation, and evaporation of an refrigerant in the case of heating operation by an outdoor heat exchanger 3. In summer when cooling operation is carried out, the exhaust air 12 is colder than an outdoor temperature, while in winter when heating operation is carried out, the exhaust air 12 is warmer than the outdoor temperature, which makes it possible to carry out a specified condensation or vaporization with less wind volume. It is, therefore, possible to minimize the power required to drive a fan compared with such cases where condensation and vaporization are carried out by an outdoor air alone, thereby collecting the heat substantially on a refrigerant circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an air conditioner having a refrigeration circuit for the purpose of air conditioning buildings, factories, and other buildings.

BACKGROUND ART Conventionally, this type of air conditioner has had a configuration as shown in FIG. That is, 101 is an indoor unit installed in a room 102 to be air-conditioned, and includes an air supply fan 103, an indoor heat exchanger 104, and a compressor 106. The supply air 106 blown by the supply air fan 103 circulates indoors and returns to the indoor unit 1o1 again as return air 107.
and an exhaust air 109 that is exhausted to the outside by a separately provided ventilation fan 108. The indoor unit 101
The outdoor unit 110 connected to the refrigeration circuit includes an outdoor fan 111 and an outdoor heat exchanger 112, and the outdoor fan 111 transfers outdoor air to the outdoor heat exchanger 112.
By blowing air into the air, cooling and heat exchange with the air were promoted.

Problems to be Solved by the Invention In such a conventional configuration, after the supply air 106 that has been cooled or heated by the indoor unit 101 is circulated indoors, a portion of it is exhausted by the ventilation fan 108 for ventilation. However, the heat that had been retained was directly emitted, creating an issue in terms of energy conservation.

The present invention aims to solve these problems and to provide an air conditioner in which heat can be recovered inside the air conditioner when exhaust gas from indoors passes through an outdoor heat exchanger. This is the purpose.

Means for Solving the Problems In order to achieve the above object, the present invention incorporates an indoor-outdoor heat exchanger built-in block and an outdoor-outdoor heat exchanger built-in block in an integrated box, and provides a communication section between the blocks. Air conditioning that allows heat recovery during ventilation in the outdoor heat exchanger by passing a portion of the return air from the room through the outdoor heat exchanger and exhausting it, and introducing outside air for ventilation. This is the configuration of the machine.

With this configuration, in the summer when cooling operation is performed, exhaust gas with a temperature lower than the outdoor temperature is blown to the outdoor heat exchanger, thereby promoting condensation of the refrigerant, and during the winter when heating operation is performed. , the evaporation of the refrigerant is promoted by blowing exhaust air at a temperature higher than the outdoor temperature to the outdoor heat exchanger, and the refrigerant is condensed and evaporated with a smaller air volume than when it is condensed or evaporated by outdoor air. This can cause the fan power to decrease.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2. In Figures 1 and 2, 1A is an indoor block that has an indoor heat exchanger 2 and an air supply fan 4 built in, and 1B is an indoor block that has an outdoor heat exchanger 3, a compressor 5, and an exhaust 71 fan 6 built in. Outdoor side blocks, each block 1
A and 1B are integrally connected via a partition plate 11. This partition plate 11 is provided with communicating portions 11A and 11B, and dampers 7A and 7B are attached to the communicating portions.

In the above configuration, the supply air 8 cooled or heated by the indoor heat exchanger 2 is returned to the air conditioner 1 as return air 9 corresponding to the indoor load, passed through the damper 7A, and then returned to the room by the exhaust fan 6. The exhaust gas 12 passing through the outer heat exchanger 3 and the damper 7! It is divided into circulating air 13 which is supplied again by the air supply fan 4 together with the outside air 1o that has passed through the air supply fan 4. Exhaust 1
2, when exhausted, the outdoor heat exchanger 3 promotes condensation of the refrigerant in the case of cooling operation, and promotes evaporation of the refrigerant in the case of heating operation. In the summer when cooling operation is performed, exhaust gas 12
The temperature is lower than the outdoor temperature, and in the winter when heating operation is performed, the exhaust gas 12 is higher than the outdoor temperature, so the predetermined amount of condensation and evaporation can be achieved with a small amount of air, and condensation occurs only with the outdoor air.

Compared to the case of evaporation, the fan power is reduced, and heat can actually be recovered on the refrigeration circuit, allowing for energy-saving operation.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, by exhausting return air from indoors through an outdoor heat exchanger, the refrigerant is condensed and evaporated using only outdoor air. Since the predetermined amount of condensation and evaporation can be achieved with a small air volume, heat can be recovered on the same level as the refrigeration system, resulting in energy-saving operation.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an air conditioner according to an embodiment of the present invention;
FIG. 2 is a plan view of the air conditioner, and FIG. 3 is a side view of the conventional air conditioner. 1...Air conditioner, 2...Indoor heat exchanger, 3...Outdoor heat exchanger, 9...
Return air, 10... outside air. Name of agent: Patent attorney Toshio Nakao and 1 other person3-
Outside the room 〃 Figure 1 '? -fiF'' Figure 3

Claims (1)

[Claims] A block with a built-in indoor heat exchanger and a block with a built-in outdoor heat exchanger are assembled into a single box, and a communication section is provided between the blocks to allow part of the return air from the room to pass through to the outdoor heat exchanger. This air conditioner makes it possible to recover heat during ventilation in the outdoor heat exchanger by exhausting the air and introducing outside air for ventilation.