JPH1019399A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an air conditioner having greater freezing capability with a simplified structure. SOLUTION: There is provided a first compression type freezer A and a second compression type freezer B different from the first freezer A. A supply side heat exchanger 9 is constructed with an evaporator 2 of the first freezer A and a condenser 8 of the second freezer B, and the evaporator 2 and the condenser 8 are disposed upstream and downstream with respect to an air fan air direction E to the suction side heat exchanger 9. An exhaust side heat exchanger 11 is constructed with an evaporator 6 of the second freezer B and a condenser 4 of the first freezer A, and further the evaporator 6 and the condenser 4 are disposed separately upstream and downstream with respect to a fan air direction F to the exhaust side heat exchanger 11. In flue exhaust side heat exchanger 11, fan air is sent to the condenser 4 after cooled with the evaporator 6 so that a heat amount taken out of the refrigerant in the condenser 4 is increased compared with no evaporator 6 even when the temperature and pressure of the refrigerant sent from the compressor 3 are the same so that the amount of heat taken out of the fan air is increased in the evaporator 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner.

[0002]

2. Description of the Related Art Conventionally, an air conditioner using a refrigerating machine equipped with a reheater has been refrigerated by one compressor, two condensers, one evaporator and a three-way valve. A circuit of the cycle was configured, and the refrigerant was divided into two condensers, and one condenser was used as a reheater.

[0003]

However, such a structure requires a compressor having a large capacity, and has a problem that its circuit configuration and control are complicated. Then, it aims at providing the air conditioner which solves these problems.

[0004]

In order to achieve the above object, an air conditioner according to the present invention comprises a first compression refrigerator and a second compression refrigerator separate from the first refrigerator. Comprising a supply-side heat exchanger with an evaporator of the first refrigerator and a condenser of the second refrigerator, and upstream with respect to a blowing direction to the supply-side heat exchanger. The evaporator of the first refrigerator on the side, the condenser of the second refrigerator on the downstream side, separately disposed, furthermore, the evaporator of the second refrigerator and the condenser of the first refrigerator And constitute the exhaust side heat exchanger at the same time.
The evaporator of the second refrigerator is disposed on the upstream side, and the condenser of the first refrigerator is disposed on the downstream side.

[0005] Further, there is provided a first compression refrigerator and a second compression refrigerator separate from the first refrigerator, wherein the evaporator of the first refrigerator and the second refrigerator are provided. The air supply side heat exchanger is constituted by a condenser, and the evaporator of the first refrigerator is provided on the upstream side and the second refrigeration unit is provided on the downstream side with respect to the air blowing direction to the supply side heat exchanger. The condenser of the machine is disposed separately, and further comprises an exhaust-side heat exchanger with the evaporator of the second refrigerator and the condenser of the first refrigerator, and to the exhaust-side heat exchanger. With respect to the blowing direction, the evaporator of the second refrigerator is arranged on the upstream side, the condenser of the first refrigerator is arranged on the downstream side, and the fin of the evaporator of the second refrigerator is The fins of the condenser of the first refrigerator are contacted or shared.

[0006]

FIG. 1 is a simplified diagram showing an embodiment of an air conditioner according to the present invention. The air conditioner comprises a first compression refrigerator A and a first refrigerator A. And another second compression type refrigerator B.

The first refrigerator A is constructed in a closed cycle by connecting a pressure reducing mechanism 1 such as a capillary tube and an expansion valve, an air-cooling evaporator 2, a compressor 3 and an air-cooling condenser 4 by piping. Thus, the refrigerant of the first refrigerator A circulates in the direction of arrow C.

The second refrigerator B is also constructed in a closed cycle by connecting a pressure reducing mechanism 5, such as a capillary tube and an expansion valve, an air-cooling evaporator 6, a compressor 7, an air-cooling condenser 8, and the like by piping. Thus, the refrigerant of the second refrigerator B circulates in the direction of arrow D opposite to the refrigerant of the first refrigerator A.

The evaporator 2 of the first refrigerator A and the condenser 8 of the second refrigerator constitute a heat exchanger 9 for supplying air to the room. Reference numeral 10 denotes a fan. The evaporator 2 of the first refrigerator A is provided on the upstream side and the condenser of the second refrigerator B is provided on the downstream side with respect to the blowing direction E of the fan 10 to the air supply side heat exchanger 9. 8 are arranged separately.

In the air supply side heat exchanger 9, blast air is
First, the air is cooled and dehumidified in the evaporator 2 and then reheated by operating the condenser 8 as a reheater to obtain air for supply at a desired temperature and relative humidity.

The evaporator 2 and the condenser 8 are constituted by fin tubes (fin coils), and the two 2 and 8 are separated, so that the moisture dehumidified by the evaporator 2 is not transmitted to the condenser 8. Then, the water flows down the fins of the evaporator 2 and flows down to a drain pan (not shown).

Next, the evaporator 6 of the second refrigerator B and the condenser 4 of the first refrigerator A constitute a heat exchanger 11 on the exhaust side. And the exhaust-side heat exchanger 11 by the fan 12
The evaporator 6 of the second refrigerator B is arranged on the upstream side and the condenser 4 of the first refrigerator A is arranged on the downstream side in the direction F of air blown toward the air conditioner.

In the exhaust side heat exchanger 11, the blown air is cooled by the evaporator 6 and then sent to the condenser 4.
Even if the temperature and pressure of the refrigerant sent from the compressor are the same, the amount of heat taken from the refrigerant in the condenser 4 becomes larger than that without the evaporator 6, so the amount of heat taken from the blown air in the evaporator 2 should be increased. And the capacity of the first refrigerator A (coefficient of performance-C
OP) is improved as compared with the case where the first refrigerator A is used alone. Of course, the second refrigerator B also performs the same operation,
The capacity is improved as compared with the case where the second refrigerator B is used alone.

Further, the evaporator 6 and the condenser 4 are also constituted by fin tubes (fin coils), and the two 6, 4 are separated from each other, so that the water condensed in the evaporator 6 is transmitted to the condenser 4. Instead, the water flows down the fins of the evaporator 6 and flows down to a drain pan (not shown).

These mechanisms are housed in, for example, various casings to constitute the air conditioner of the present invention.

FIG. 2 shows a case where the fins of the evaporator 6 of the exhaust-side heat exchanger 11 and the fins of the condenser 4 are in contact or shared. In this case, the water condensed in the evaporator 6 is
Since the heat is transmitted to the fins of the condenser 4 having a higher temperature and evaporates, and the heat is further removed from the refrigerant as compared with the case of FIG. 1, the capacity of both the refrigerators A and B is further improved. Since the exhaust gas at that time is humidified by the steam, the exhaust gas is discharged outside through a duct or the like.

[0017]

According to the first and second aspects of the present invention, temperature and humidity can be controlled with a simple mechanism. In addition, when the maximum capacity of the first and second refrigerators A and B alone is assumed to be 1 respectively, the synergistic action of the refrigerators A and B can be used without increasing the capacity of the compressor and the like. Both A and B can obtain at least one refrigerating capacity, and the refrigerating capacity increases comprehensively. In addition, a small-sized and small-capacity compressor can be used as compared with a compressor having the same refrigeration capacity, so that cost reduction and compactness can be achieved.

[Brief description of the drawings]

FIG. 1 is a simplified configuration diagram showing one embodiment of the present invention.

FIG. 2 is a simplified configuration diagram showing another embodiment.

[Explanation of symbols]

 2 Evaporator 4 Condenser 6 Evaporator 8 Condenser 9 Supply heat exchanger 11 Exhaust heat exchanger A First chiller B Second chiller E Blowing direction F Blowing direction

Claims (2)

[Claims] 1. A first compression refrigerator A, and a second compression refrigerator B different from the first refrigerator A, wherein the evaporator 2 of the first refrigerator A and the evaporator 2 The condenser 8 of the second refrigerator B constitutes the supply-side heat exchanger 9, and the upstream side of the first refrigerator A with respect to the blowing direction E to the supply-side heat exchanger 9. The evaporator 2 and the condenser 8 of the second refrigerator B are separately disposed on the downstream side, and the condenser 8 of the second refrigerator B and the condenser 4 of the first refrigerator A are further disposed. And the evaporator 6 of the second refrigerator B on the upstream side and the first refrigeration unit on the downstream side with respect to the blowing direction F to the exhaust side heat exchanger 11. An air conditioner wherein the condenser 4 of the machine A is arranged separately. 2. A first compression refrigerator A, and a second compression refrigerator B different from the first refrigerator A, wherein the evaporator 2 of the first refrigerator A and the evaporator 2 The condenser 8 of the second refrigerator B constitutes the supply-side heat exchanger 9, and the upstream side of the first refrigerator A with respect to the blowing direction E to the supply-side heat exchanger 9. The evaporator 2 and the condenser 8 of the second refrigerator B are separately disposed on the downstream side, and the condenser 8 of the second refrigerator B and the condenser 4 of the first refrigerator A are further disposed. And the evaporator 6 of the second refrigerator B on the upstream side and the first refrigeration unit on the downstream side with respect to the blowing direction F to the exhaust side heat exchanger 11. Wherein the fin of the evaporator 6 of the second refrigerator B and the fin of the condenser 4 of the first refrigerator A are contacted or shared. Air conditioner.