JP2004144334A - Ceiling-installed integral type air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an integral type air conditioner capable of executing various kinds of operation including cooling, heating, and ventilating in a single unit. <P>SOLUTION: A supply air port 5 and a return air intake port 2 are formed in one of facing surfaces of a casing 1, and an outside air intake port 4 and a discharge air port 3 are formed in the other of the facing surfaces. In the casing 1, a horizontally placed U-shaped supply air blow passage A communicating and connecting the return air intake port 2 and the supply air port 5 to each other, and provided with an evaporator 6, a reheater 7, and a supply air fan 8, and a horizontally placed U-shaped discharge air blow passage B communicating and connecting the outside air intake port 4 and the discharge air port 3 to each other, and provided with a condenser 9 and a discharge air fan 10 are provided. The outside air intake port 4 and the return air intake port 2 are disposed to face each other, and on the outer side of the supply air blow passage A and the discharge air blow passage B on both intake port side, a first communication passage C to introduce return air taken from the return air intake port 2 to the condenser 9 as well, and a second communication passage to introduce outside air taken from the outside air intake port 4 to the evaporator 6 as well are provided. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an integrated air conditioner for ceiling installation.
[0002]
[Prior art]
[Patent Document 1] Japanese Unexamined Patent Application Publication No. 2002-276793 Many conventional air conditioners only have a structure in which air is circulated and heated / cooled while exchanging heat with the return air. Air can be exhausted outdoors, but it cannot be cooled and heated by circulating indoors while exchanging heat with return air.
[0003]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide a ceiling-mounted integrated air conditioner that is compact, easy to install on a ceiling, and can perform all air conditioning from outside air processing to cooling and heating.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, an integrated air conditioner for ceiling installation according to the present invention has an air supply port and a return air intake formed on one of opposed surfaces of an outer peripheral side surface of a casing, and an outside air is provided on the other of the opposed surfaces. A U-shaped air supply passage having a U-shape formed with an intake port and an exhaust port, and in the casing, the return air intake port and the air supply port are connected and connected, and an evaporator, a reheater, and an air supply fan are provided. And a U-shaped exhaust air passage having a condenser and an exhaust fan communicating and connecting the outside air inlet and the exhaust port, wherein the outside air inlet and the return air inlet are opposed to each other. Outside the supply air passage and the exhaust air passage on both intake sides, a first series of passages for guiding return air taken in from the return air intake to the condenser, and outside air taken in from the outside air intake. And a second communication path for guiding the gas to the evaporator. Further, a blowing hose movable at a blowing position was connected to the air supply port. Furthermore, a damper mechanism that controls the air volume of the return air in the air supply passage and the air volume of the outside air in the exhaust air passage, or the air flow control of the outside air and the return air in the air supply air passage and the outside air and the return air in the exhaust air passage. A damper mechanism for controlling the air volume is provided. Further, the fin tubes of each of the evaporator, the condenser and the reheater were formed into elliptical tubes.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 show an embodiment of an integrated air conditioner for ceiling installation according to the present invention. This air conditioner is supplied to one of opposing surfaces of an outer peripheral side surface of a casing 1 having a vertically thin flat box shape. An air inlet 5 and a return air inlet 2 are formed, and an outside air inlet 4 and an exhaust port 3 are formed on the other of the opposing surfaces, and a refrigerant circuit 13, a return air inlet 2 and an air supply The port 5 is communicated and connected, and the evaporator 6, the reheater 7, and the air supply fan 8 are provided. An exhaust fan B having a U-shape in which an exhaust fan 10 is provided, and a damper mechanism 12 for controlling the amount of air returned from the air supply passage A and the amount of air outside the exhaust air passage B are provided.
[0006]
The outside air intake 4 and the return air intake 2 are opposed to each other, and the return air taken in from the return air intake 2 is also supplied to the condenser 9 outside the supply air supply passage A and the exhaust air supply passage B on both intake sides. A first communication path C for guiding the air and a second communication path D for guiding the outside air taken in from the outside air inlet 4 to the evaporator 6 are provided, and the blowing hose 11 movable at a blowing position is connected to the air supply port 5. I do. By carrying the hose 11 to an arbitrary place in the room, the entire room is air-conditioned or the room is locally air-conditioned. Alternatively, an air outlet is provided in the ceiling, and a hose 11 is connected to the outlet to perform air conditioning. The exhaust port 3 and the outside air intake 4 are communicated with the outside through a duct, a stalk, and the like, and the return air intake 2 is communicated with the room through a duct, a ceiling intake port, and the like. Solid and dotted outline arrows indicate the wind direction.
[0007]
The refrigerant circulation circuit 13 is configured by connecting piping such as an evaporator 6, a condenser 9, a reheater 7, a compressor 14, a liquid receiver (not shown), an expansion valve, and a switching valve for reversing the refrigerant circulation direction. The heat absorption and the heat radiation of the evaporator 6 and the condenser 9 can be switched freely. The reheater 7 is provided on the lee of the evaporator 6, and a part of the refrigerant (hot gas) flowing to the condenser 9 is bypassed to the reheater 7 so as to be freely cooled, dehumidified, and reheated. Each fin tube of the evaporator 6, the condenser 9 and the reheater 7 is preferably an elliptical tube, but may be a circular tube.
[0008]
The supply air passage A and the exhaust air passage B are arranged in parallel with the turn portions facing each other, the evaporator 6, the reheater 7 and the condenser 9 are adjacent to each other, and the air is sucked downwind of the evaporator 6 and the reheater 7. A gas supply fan 8 is provided, a suction type exhaust fan 10 is provided downstream of the condenser 9, and components of a refrigerant circulation circuit 13 such as a compressor 14 and a liquid receiver are provided upstream of the condenser 9. Effective use of space and compactness. The arrangement of the evaporator 6, the reheater 7, the air supply fan 8, the condenser 9, the exhaust fan 10, the compressor 14 and the like may be other than those shown in the drawings. The refrigerant circulation circuit 13 may be provided integrally with a frame (not shown) or the like so as to be freely taken out and stored in the casing 1. The refrigerant circulation circuit 13 can be taken out of the casing 1 without removing the entire casing. Refrigerant recovery work and maintenance can be performed easily, and installation and storage are not required. Further, by replacing only the refrigerant circuit 13, the cost at the time of renewal can be reduced.
[0009]
The casing 1 is provided with a damper 15 for controlling the amount of return air from the return air inlet 2 to the evaporator 6 and a damper 16 for controlling the amount of external air from the outside air intake 4 to the condenser 9. 12, and the air volume is controlled by various operation control devices and the like. Each of the dampers 15 and 16 may have any structure that can be switched between fully closed and fully opened or that can freely change an air volume. Although not shown, for example, a damper for controlling the amount of return air from the return air inlet 2 to the condenser 9 and a damper for controlling the amount of outside air from the outside air intake 4 to the evaporator 6 are provided. A damper mechanism that controls the air volume of the outside air and the return air in the air passage A and the air volume of the outside air and the return air in the exhaust air passage B may be used.
[0010]
An example of the operation of this air conditioner will be described. In the ventilation cooling / heating operation, the return air from the return air inlet 2 and the external air from the outside air intake 4 are mixed at a predetermined ratio, and heat is exchanged in the evaporator 6 to cool or warm air. At the same time, heat exchanges the circulating refrigerant of the condenser 9 with the return air from the return air inlet 2 and the outside air from the outside air inlet 4 to absorb or radiate heat, and recover exhaust heat. A predetermined amount of indoor air is exhausted from the exhaust port 3 to the outside.
[0011]
In the supercooling / dehumidification / reheating operation, the air in the air supply / air supply passage A is supercooled / dehumidified by the evaporator 2 and then reheated by the reheater 7 to supply so-called dry air. The circulating refrigerant in the condenser 9 exchanges heat with air and is exhausted outdoors. At this time, a separate heating source is not required for reheating, and the load on the condenser is reduced to save energy. The air to be supercooled and dehumidified may be any of only return air, only outside air, or a mixture of return air and outside air. In the ventilation operation and the outside air cooling operation, the compressor 14 is stopped, the dampers 15 and 16 are fully closed, only the outside air is supplied to the room, and only the return air is exhausted to the outside. The number of the air supply ports 5 and the number of the hoses 11 can be freely increased or decreased.
[0012]
【The invention's effect】
According to the first aspect of the present invention, a single integrated air conditioner can perform all air conditioning operations such as a ventilation cooling / heating operation, an outside air cooling operation, a ventilation operation, and a supercooling / dehumidification / reheating operation. The outside air intake to the air supply passage and the outside air intake to the exhaust air passage can be shared by one outside air intake, and the return air intake to the supply air passage and the return air intake to the exhaust air passage are Since it can be shared by two return air inlets, the number of parts is reduced, making it possible to reduce the size and cost and facilitate construction. The duct from the indoor side can be connected to one of the opposing surfaces of the casing, and the duct from the outdoor side can be connected to the other, so that the duct construction is easy and the casing can be made thin and compact, which is ideal for ceiling installation. Since the air supply and exhaust air paths are U-shaped to increase the air supply distance, low noise is achieved despite compactness.
According to the second aspect of the invention, it is possible to locally change the air-conditioning by freely changing the blowing position of the blowing hose, and to easily change and respond to various types of air-conditioning.
According to the third aspect of the invention, during ventilation operation, only the outside air is supplied without taking the return air into the supply air supply passage, and only the return air can be exhausted without taking the outside air into the exhaust air supply passage. You can save energy by not using In addition, if a damper mechanism is used to control the air volume of the outside air and return air in the supply air passage and the air volume of the outside air and return air in the exhaust air passage, only the return air is exchanged between the room and the air conditioner while exchanging heat with the evaporator. A warm-up operation can also be performed by circulating between them.
According to the invention of claim 4, since the pressure loss is reduced and the heat exchange efficiency is improved, a small fan can be used and noise can be reduced. The evaporator, condenser and reheater can be downsized, and the air conditioner can be downsized.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention.
FIG. 2 is a front view of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Casing 2 Return air inlet 3 Exhaust port 4 Outside air inlet 5 Air supply port 6 Evaporator 7 Reheater 8 Air supply fan 9 Condenser 10 Exhaust fan 11 Hose 12 Damper mechanism 13 Refrigerant circulation circuit A Air supply air path B Exhaust air passage C First communication path D Second communication path

Claims (4)

An air supply port 5 and a return air inlet 2 are formed on one of the opposing surfaces of the outer peripheral side surface of the casing 1, and an outside air inlet 4 and an exhaust port 3 are formed on the other of the opposing surfaces. A return U-shaped inlet / outlet passage A which is connected to the return air inlet 2 and the air supply port 5 and is provided with an evaporator 6, a reheater 7 and an air supply fan 8; And a condensate 9 and an exhaust fan B provided with an exhaust fan 10 in communication with the exhaust port 3. The outside air intake 4 and the return air intake 2 are opposed to each other. Outside the supply air passage A and the exhaust air passage B on both intake sides, a first series of passages C for guiding the return air taken in from the return air intake 2 to the condenser 9; And a second communication passage (D) for guiding outside air taken from the inlet (4) to the evaporator (6). . The integrated air conditioner for ceiling installation according to claim 1, wherein a blowing hose (11) movable at a blowing position is connected to the air supply port (5). A damper mechanism 12 for controlling the return air volume of the air supply passage A and the external air flow of the exhaust air passage B, or controlling the outside air of the air supply passage A and the return air volume control and the outside air of the exhaust air passage B The integrated air conditioner for ceiling installation according to claim 1 or 2, further comprising a damper mechanism for controlling an air volume of return air. The integrated air conditioner for ceiling installation according to claim 1, 2 or 3, wherein each of the fin tubes of the evaporator 6, the condenser 9 and the reheater 7 is an elliptical tube.

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