JPH0543931B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention aims to perform all heat exchange processes such as supply air, return air, exhaust air, etc. fully automatically, efficiently and effectively with one device. The present invention relates to a so-called system-type terminal air conditioner that produces low noise, is small, lightweight, and compact.

[Conventional technology]

Conventionally, in structures such as buildings having a large number of rooms, mechanical devices for air supply, return air, exhaust, etc., which function as air conditioning means for the rooms, have been distributed to appropriate locations within the room.

However, the above-mentioned distributed arrangement of the mechanisms requires very complicated work such as mounting equipment and maintenance, which inevitably leads to the problem of installation space and high costs.

Recently, as a means to solve the above-mentioned drawbacks, a terminal air conditioner in which the above-mentioned mechanisms are integrated has been developed and widely used.

For example, in the terminal air conditioner shown in FIG. 1, a return air port 2 from the room, an air supply port 3 to the room, an outside air intake port 4, and an exhaust port 5 are opened in the upper part of the aircraft body 1.
The return air port 2 and the exhaust port 5 are connected to the outside air intake port 4 and the air supply port 3.
RA blower 6, OA blower 7, and SA blower 8 and electric motors are installed in each of the air passages a and b, and in the air passage b. Total heat exchanger 9, cold and
A hot water coil 10, a humidifier 11, and a filter 1
Place 2 as needed. A system has also been developed in which a bypass damper 13 for RA is installed between the above-mentioned air passages a and b in order to reduce and effectively utilize a portion of the exhaust heat.

[Problem to be solved by the invention]

Conventional terminal type air conditioners are formed by the above mechanism, but recently, in air conditioners where low noise is particularly required, the air conditioners, which are the sources of noise and vibration as described above, are Various mechanisms are connected to the air supply port 3,
Naturally, installing near the outside air intake 4, exhaust port 5, etc. openings has the risk of noise leaking into the room and outside, and it is also necessary to install the heavy blowers, electric motors, etc. in the ventilation passage A.・As a result of various experiments, it has been found that placing the aircraft in space within B increases the bulk of the aircraft as a whole, making it extremely unstable and further contributing to the generation of noise.

[Means for solving the invention]

In view of the above-mentioned drawbacks, the present invention forms a long ventilation passage in the fuselage body with a U-shaped parallel circuit of three passages, suppresses and eliminates various noises generated in the passage, and installs a blower, electric motor, etc. at the bottom of the fuselage. The main purpose is to prevent the outflow of noise and noise from each opening by installing heavy objects, and to provide an ultra-low noise terminal air conditioner with good stability. Each air inlet/outlet such as a return air inlet, an exhaust outlet, an outside air intake, etc. is provided in the upper part of the fuselage, and an OA is provided inside the fuselage to communicate the outside air intake and the air inlet.
A U-shaped SA ventilation passage that communicates the ventilation passage and the return air opening with the air supply opening is formed, and a U-shaped air passage that communicates the return air opening with the exhaust opening is adjacent to the back of the OA/SA ventilation passage. An EA ventilation passage is formed and air for RA is arranged within the EA ventilation passage.
An SA blower was installed, and a total heat exchanger was placed in a planar manner in the OA ventilation passage, and cold and hot water coils were placed in an inclined manner in the SA ventilation passage, and various mechanisms such as a humidifier and a drain pan were installed. It consists of a terminal type air conditioner, which features a bypass damper for RA installed between the EA ventilation passage and the OA ventilation passage, and a portion of the exhaust gas being returned to the SA ventilation passage.

[Effect]

The return air vents and air supply vents that open at the top of the aircraft return and supply indoor air through ducts, while the exhaust vents and outside air intake vent exhaust the indoor air to the outside and bring fresh air into the cabin. Incorporate.

That is, the fresh air passes through the OA ventilation passage and
Heat is exchanged to an appropriate temperature by the cold/hot water coil in the ventilation passage, and cold/warm air is supplied into the room from the air supply port.

In addition, the contaminated air inside the room is discharged from the return air vent to the outside through the EA ventilation passage and the exhaust port, but due to the action of the RA bypass damper, a part of it is returned to the SA ventilation passage and is returned to the room. Although a return flow is performed, the exhaust heat on the exhaust side heats and cools the total heat exchanger, making the temperature of the fresh air effective.

〔Example〕

The embodiments of the present invention are shown below as illustrative diagrams, FIG.
This will be explained with reference to FIG.

Note that the numbers in the drawings have the same names as those in the explanation of FIG. 1, so a description of each one will be omitted. That is, 1 is the aircraft body, 2 is the return air port, 3 is the air supply port, and 4
is the outside air intake, 5 is the exhaust port, 6 is the RA blower,
9 is a total heat exchanger, 10 is a cold/hot water coil, 11 is a humidifier, 12 is a filter, 13 is a bypass damper for RA, and the other symbol 14 is a drain pan.

The present invention has each of the above-mentioned mechanical devices, and the inside of the fuselage 1 is divided into the front back and left and right by several partition plates (dotted lines), and the front part is provided with an air supply port from an outside air intake port 4. 3 and the approximately U-shaped OA/SA ventilation passages A and B that communicate from the return air port 2 to the air supply port 3, and the U-shaped EA that communicates the return air port 2 and the exhaust port 5 on the back side. The ventilation passages C are formed in parallel in the front and back, respectively.

Note that the above-mentioned OA ventilation passage A and SA ventilation passage B merge by opening the bypass damper 13 and are formed into an integrated passage.

In the OA ventilation passage A, a total heat exchanger 9 is arranged in a planar manner over the entire width of the passage, and in the SA ventilation passage B, a cold/hot water coil 10 having an integrated structure of a cold water side coil and a hot water coil is installed diagonally. Deploy.

In addition, the OA blower 7 is placed at the bottom of the OA ventilation passage A, and the SA blower 8 and related parts such as these electric motors are placed at the bottom of the SA ventilation passage B.
Furthermore, RA blowers 6 are arranged in each of the EA blowing passages C.

It goes without saying that by arranging the blowers 6, 7, and 8 at three points in a substantially triangular shape as shown in the drawing, the weight is concentrated downward and the entire aircraft can be more stably placed. Nor.

Furthermore, among the above, the OA blower 7 is not required during normal operation, but is required when the filter pressure is high.

The present invention is expected to provide a sufficient noise reduction effect with the above structure, but if further noise reduction and vibration reduction is required, a noise reduction box 15 having a noise reduction mechanism 16 can be installed at each ventilation passage opening of the airframe 1. By connecting the parts and using them as an integral part, it is possible to obtain a more effective sound deadening effect.

〔Effect of the invention〕

In the present invention, by forming each of the ventilation passages A, B, and C on the return and exhaust air supply side into a U-shape as described above, the distance between each passage becomes longer, and the noise generated inside the machine is reduced. In addition to naturally suppressing the noise, the SA blower, which was said to be the cause of the most noise generation, is placed at the bottom of the aircraft, so it is separated from the supply and return air ports. It has a low noise effect, such as completely preventing noise leakage from the parts.

In addition, various mechanical devices such as heavy blowers and electric motors are collectively arranged below the fuselage, and these are claimed in claim 2.
By forming the triangular three-point arrangement, the weight of the entire aircraft is extremely stable, and there is no problem with vibrations, etc., and at the same time, the diagonal arrangement of the cold and hot water coils and the flat arrangement of the total heat exchanger are achieved. This allows the heat exchange effect to be performed reliably and well throughout the passage, which not only reduces power consumption, but also improves the U-shaped ventilation passage A,
Since B and C are formed side by side in the front and back, it also has the advantage that the entire air conditioner can be made extremely compact and compact.

Further, by providing a noise damping damper in series with the airframe as in claim 3, a further noise reduction effect can be obtained and it can be said to be optimal as an ultra-low noise type air conditioner.

[Brief explanation of drawings]

Figure 1 is a front view showing the internal structure of a conventional terminal type air conditioner, Figure 2 is a front view of the terminal type air conditioner according to the present invention, Figure 3 is a sectional view of the left side, and Figure 4. is a sectional view of the right side part. Explanation of symbols, A...OA ventilation passage, B...SA
Ventilation passageway, C...EA ventilation passageway, 6...Blower for RA, 7...Blower for OA, 8...Blower for SA,
9...Total heat exchanger, 10...Cold/hot water coil, 1
1... Humidifier.

Claims (1)

[Scope of Claims] 1. Each air inlet/outlet such as a return air port, an air supply port, an exhaust port, an outside air intake port, etc. is provided in the upper part of the fuselage, and the outside air intake port and the air intake port are communicated with each other inside the fuselage. A U-shaped EA is formed adjacent to the back of the OA and SA ventilation passage and communicates the return air port with the exhaust port.
A blower passage is formed, an RA blower is placed in the EA blower passage, an SA blower is installed in the lower part of the body, and a total heat exchanger is installed in a planar manner in the OA blower passage. Cold and hot water coils are arranged in an inclined manner within the interior, and each mechanism such as a humidifier and drain pan is placed separately.A bypass damper for RA is installed between the EA ventilation passage and the OA ventilation passage, and a part of the exhaust air is A terminal type air conditioner characterized by returning air to the SA ventilation passage. 2 In the above air conditioner, the OA at the bottom of the machine
Claim 1, characterized in that an OA blower is arranged in the air passage, and the RA blower and the SA blower at the bottom of the fuselage are located at three points of a substantially triangular shape. Terminal type air conditioner. 3 In the air conditioner mentioned above, each duct connection port such as a return air port, an air supply port, an exhaust port, an outside air intake port, etc. is opened at the top of the air conditioner, and a sound deadening chamber is integrally formed by arranging a sound deadening mechanism inside. A terminal type air conditioner characterized by being connected to each other.