JP3528827B2 - Indoor air heat source type heat pump air conditioner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor air heat source type heat pump type air conditioner.

[0002]

2. Description of the Related Art Conventionally, in a toilet or kitchen, local ventilation is performed by a ventilation fan or the like to naturally supply air from a corridor or the like.

[0003]

When an air conditioner is installed in a room containing contaminated air containing such ammonia and oil,
There is a problem that the heat exchanger causes the capacity to deteriorate early due to the contaminated air. Therefore, it is an object of the present invention to provide an indoor air heat source type heat pump type air conditioner that solves these problems.

[0004]

In order to achieve the above object, the indoor air heat source type heat pump type air conditioner of the present invention comprises:
The casing is equipped with a return air blow passage with a condenser, an outside air blow passage with an evaporator, and a refrigerant circulation circuit, and this casing is installed in a local exhaust chamber so that outside air from the outside evaporates. The outside air ventilation path is connected to the outside and the local exhaust chamber so that heat is exchanged in the local exhaust chamber and air is supplied to the local exhaust chamber, and the return air from the non-local exhaust chamber is heat-exchanged in the condenser. The return air duct was communicated with the non-local exhaust chamber so that it was exhausted to the non-local exhaust chamber. In addition, the casing is provided with a return air blow passage provided with a condenser, an outside air blow passage provided with an evaporator, and a refrigerant circulation circuit. The outside air ventilation path is connected to the outside and the local exhaust chamber so that the heat is exchanged in the evaporator and supplied to the local exhaust chamber, and the return air from the non-local exhaust chamber is heat-exchanged in the condenser. The return air blow passage is communicated with the non-local exhaust chamber so that the air is exhausted to the non-local exhaust chamber, the exhaust blow passage is provided in the casing, and the air in the local exhaust chamber is exhausted to the outside. The local exhaust chamber was connected to the outside. Furthermore, the fin tubes of the condenser and the evaporator are elliptical tubes.

[0005]

1 to 3 show one embodiment of an indoor air heat source type heat pump type air conditioner of the present invention,
This air conditioner includes a return air blow passage A provided with a condenser 2, a fresh air blow passage B provided with an evaporator 3, a refrigerant including a condenser 2, an evaporator 3, a compressor 4, and the like in a casing 1. Circulation circuit C
And are equipped with. The refrigerant circulation circuit C also includes a receiver (not shown), an expansion valve, a switching valve for the refrigerant circulation direction, and the like, and the condenser 2
Also, the heat absorption and heat dissipation of the evaporator 3 can be switched.

The casing 1 is installed on the ceiling or the like of the local exhaust chamber E, and the outside air blow passage B is outdoor so that the outside air from the outside is heat-exchanged by the evaporator 3 and supplied to the local exhaust chamber E. To the local exhaust chamber E and the return air from the non-local exhaust chamber F is heat-exchanged by the condenser 2 to be exhausted to the non-local exhaust chamber F so that the return air duct A is non-local. It communicates with the exhaust chamber F. It should be noted that the local exhaust chamber E means a chamber having contaminated air containing ammonia, oil, etc., and the non-local exhaust chamber F means a chamber having no contaminated air.

An outside air intake 10, an air supply port 11, a return air intake 12 and an exhaust port 13 are formed in the casing 1, and the outside air intake 10 and the air supply port 11 are connected to each other through an outside air blow passage B. The return air intake 12 and the exhaust port 13 are connected by the return air blow passage A. The return air intake 12 and the exhaust port 13 are connected to the interior of the non-local exhaust chamber F or the ceiling via a duct or the like. The air supply port 11 is communicatively connected to the local exhaust chamber E via a duct or a blowout port, and the outside air intake port 10 is communicatively connected to the outside via a duct or the like. The solid and dotted outline arrows indicate the blowing direction.

The return air blow passage A and the outside air blow passage B are provided with blowers 14 and 15, respectively. A humidifier may be provided in the outside air blowing passage B, if necessary. The return air blow passage A and the outside air blow passage B are partitioned and formed by a partition plate or the like. The fin tubes 8 of the condenser 2 and the evaporator 3 are preferably elliptical tubes (see FIG. 3), but may be circular tubes.

In the local exhaust chamber E, a ventilation port (intake port) and a ventilation fan are installed to perform local exhaust. In accordance with this local exhaust amount, the outside air taken in from the outside air inlet 10 is heat-exchanged by the evaporator 3 and is supplied to the local exhaust chamber E from the air supply port 11.
At the same time, the return air of the non-local exhaust chamber F taken from the return air inlet 12 exchanges heat with the circulating refrigerant of the condenser 2 to absorb or radiate heat, and exhaust from the exhaust port 13 to the non-local exhaust chamber F.

FIG. 4 shows another embodiment, in which the casing 1 is
A return air blow passage A provided with a condenser 2, an outside air blow passage B provided with an evaporator 3, and a refrigerant circulation circuit C are provided. The outside air blowing passage B is communicated with the outside and the local exhaust chamber E so that the outside air is heat-exchanged by the evaporator 3 and is supplied to the local exhaust chamber E,
The return air blow passage A is communicated with the non-local exhaust chamber F so that the return air from the non-local exhaust chamber F is heat-exchanged by the condenser 2 and exhausted to the non-local exhaust chamber F, and the casing 1 An exhaust air blowing path D is provided inside the local exhaust chamber E so that the air in the local exhaust chamber E is exhausted to the outside. Except for the exhaust air blowing path D, the description is omitted because it is the same as the above embodiment.

A local exhaust inlet 17 and a local exhaust port 18 are formed in the casing 1, and the local exhaust inlet 17 and the local exhaust port 18 are communicatively connected to each other through an exhaust air blowing path D. The local exhaust port 18 is a duct or the like. It connects with the outdoors through. The local exhaust intake 17 is provided in the local exhaust chamber E directly or through a duct or the like.
Connect with. A blower 16 is provided in the exhaust air passage D. A ventilation port (intake port) is installed in the local exhaust chamber E.
In addition, the air conditioner of each of the above-mentioned embodiments can be freely used as an outside air processing air conditioner.

[0012]

According to the first and second aspects of the present invention, there is no reduction in the capacity of the refrigerant circulation circuit due to the contaminated air in the local exhaust chamber,
Stable performance can be demonstrated over a long period of time, and maintenance work and maintenance costs can be reduced. Since the refrigerant circulation circuit can be operated by using the indoor air heat source (return air heat of the non-local exhaust chamber) and the outside air can be processed, etc., the heat exchange capacity is high and the refrigerant circulation circuit and the air conditioner as a whole can be downsized and energy-saving installed. Space, equipment cost and running cost can be reduced. Moreover, the air balance of the non-local exhaust chamber is not disturbed. According to the second aspect of the present invention, a single air conditioner can perform local exhaust and supply / exhaust of outside air treatment, and it is not necessary to separately install a ventilation fan or the like, and the air balance of the local exhaust chamber can be easily achieved. . According to the third aspect of the present invention, the pressure loss does not increase and the heat exchange capacity does not decrease even when used at a high wind speed, so that a small evaporator and condenser can be used, and the air conditioner can be made significantly compact. Further, since pressure loss is reduced at normal wind speed and heat exchange efficiency is improved, a small blower can be used and noise can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a side view of a main part of FIG.

FIG. 3 is a cross-sectional view of a fin tube group.

FIG. 4 is a plan view showing another embodiment.

[Explanation of symbols]

1 casing 2 condenser 3 evaporator 8 fin tubes A Return air duct B Air supply duct C Refrigerant circulation circuit D Exhaust air duct E Local exhaust chamber F Non-local exhaust chamber

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-5-157282 (JP, A) JP-A-5-264065 (JP, A) JP-A-8-68553 (JP, A) JP-A-6- 201284 (JP, A) JP-A-63-80135 (JP, A) Actual development 4-103528 (JP, U) Actual development 5-54935 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24F 3/044 F24F 3/00

Claims (3)

(57) [Claims] 1. A casing 1 is provided with a return air blow passage A having a condenser 2, an outside air blow passage B having an evaporator 3, and a refrigerant circulation circuit C, and the casing 1 is locally exhausted. It is installed in the room E, and the outside air blow passage B is communicated with the outside and the local exhaust chamber E so that the outside air from the outside is heat-exchanged by the evaporator 3 and is supplied to the local exhaust chamber E. The return air from the local exhaust chamber F is heat-exchanged in the condenser 2 and the non-local exhaust chamber F
An indoor air heat source type heat pump type air conditioner characterized in that the return air blow passage A is communicated with a non-local exhaust chamber F so as to be exhausted to. 2. A casing 1 is provided with a return air blow passage A having a condenser 2, an outside air blow passage B having an evaporator 3, and a refrigerant circulation circuit C, and the casing 1 is locally exhausted. It is installed in the room E, and the outside air blow passage B is communicated with the outside and the local exhaust chamber E so that the outside air from the outside is heat-exchanged by the evaporator 3 and is supplied to the local exhaust chamber E. The return air from the local exhaust chamber F is heat-exchanged in the condenser 2 and the non-local exhaust chamber F
The exhaust air passage A is communicated with the non-local exhaust chamber F so that the air in the local exhaust chamber E is exhausted to the outside. An indoor air heat source type heat pump type air conditioner characterized by connecting the room E and the outside. 3. A condenser 2 and the fin tube 8 of the evaporator 3 and the oval tube according to claim 1 or 2 indoor air heat source type heat pump air conditioner according.