JPH07190409A - Low noise type air-conditioner - Google Patents

Abstract

PURPOSE:To provide a low noise type air-conditioner capable of complete and reliably eliminating a great noise generated in the air-conditioner, which is heard from an air suction port and an air blow port, whereby a quiet air- conditioning state can be always obtained in a room. CONSTITUTION:The interior of an air-conditioner body is divided by several partitions (a), (b), (c) to form an annular air flow passage 4 in the air- conditioner, and various mechanisms such as a filter, a motor, a blower, a heat-exchanging coil, etc., are disposed in the annular air flow passage. Further, by dividing the air flow passage with the partitions (a), (b), (c), an air suction noise suppressing chamber A of a space size is formed and provided in the passage on an air suction side and at the front part of the blower, and a primary outlet noise suppressing chamber of a space size is also formed and provided below the A chamber. Furthermore, a secondary outlet noise suppressing chamber is formed and provided in the air flow passage at the upper part of the heat-exchanging coil and on an air blow side. These chambers are formed in the same air blow passage and communicate to one another, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low noise type air conditioner which completely eliminates noise generated in the machine at the time of intake and discharge of air to always provide a comfortable environment in the room.

[0002]

2. Description of the Related Art Conventionally, this type of air conditioner has a straight air passage that connects an air inlet and an air outlet, which is opened at the top of the machine body, or a U-shaped air ventilation path that connects the air outlets. The filter is installed in these ventilation passages.
It has a structure in which each mechanical device such as a blower and a heat exchange coil is individually arranged, and the cold and warm air that has been heat-exchanged to an appropriate temperature by the heat exchanger is fed to each room through the blowout port. Is being carried out.

[0003]

However, since most of these air passages are directly connected to the suction port and the air outlet, the noise generated in the machine is transmitted to the air intake and suction ports during operation. In a laboratory, a hospital, a classroom, etc., which leaks from the mouth to a room and requires a quiet environment, the sound deadening countermeasure has been a serious problem.

In view of such a problem, in an ordinary air conditioner, a noise canceling mechanism having an appropriate shape is arranged in the air passage near the air outlet, or an appropriate sound deadening material is attached in the air passage to prevent noise. Although the outflow of vibration noise was suppressed, it is extremely difficult to obtain a perfect silencing effect only by this method, and therefore, some silencing device is provided in another duct, and the bulkiness is further increased in the upper part of the main body. The noise of the noise was prevented by connecting the muffling chambers.

For this reason, the inventor has previously used the conventional straight air passage or U-shaped air passage as the air passage of the annular air passage, and the air passage distance in the passage is increased to form the annular air passage. By virtue of the detouring effect of the ventilation passage and the synergistic effect of the mechanical device installed in the passage, the noise of noise in the air flowing inside the machine was naturally eliminated, and it was well received in the industry as a quiet air conditioner. However, since the purpose of all of the above-mentioned noise reduction measures is to eliminate the discharge sound, naturally, there is a lack of measures against leakage noise of the noise generated at the intake port. .

[0006]

The present invention utilizes the above-mentioned invention of the present application more effectively to eliminate the noise generated in the aircraft, and in particular, the noise at the intake port has been a concern in the past. The main purpose of this is to eliminate the generation of vibration noise and to seek a more reliable and complete low noise type air conditioner. The outline of the present invention is to form an annular air ventilation path that communicates an intake port and an air ventilation port with partition plates a, b, and c inside the machine body, and to form an inlet / outlet portion or an outlet portion of the annular air ventilation channel. An appropriate filter mechanism such as a pre-filter, a main filter, and a mechanism such as an electric motor, a blower, and a heat exchange coil are arranged in the passage, and the partition plates a, b, and c are used to form the side A chamber of the air receiving side passage and the blower. The front B chamber is formed as an air diffusion chamber, the upper A chamber is used as a suction noise muffling chamber, the B chamber is used as a discharge noise primary muffling chamber, and the suction passage 11 above the heat exchange coil is bent horizontally. The general purpose of the present invention is to provide a low noise type air conditioner characterized in that the discharge sound secondary muffling chamber consisting of a horizontal chamber is provided in the above-mentioned annular air ventilation passage in communication with each other. .

Further, in the air conditioner having such a structure, an air flow rectifying plate is provided at a passage entrance portion of a partition plate which forms a secondary sound muffling chamber for discharge sound, and further, in a part of the muffler chamber in the vicinity of an air supply port. With a suitable sound deadening and air flow adjustment plate attached,
Moreover, it goes without saying that a better sound deadening effect can be expected and obtained by arranging an appropriate sound deadening mechanism in each of the above-mentioned sound deadening chambers formed in the annular air ventilation passage.

[0008]

The operation of the air conditioner according to the present invention will be described below with reference to the drawings. A body 1 is installed at a predetermined location in a room, and an intake port 2 and an air supply port 3 which can be opened in the upper part are dampers (not shown). And connect them to the air vent and the air intake side in the room. By operating the blower 7 in such a state, the air that can be inhaled from the room or the outside is introduced into the machine from the suction port 2, flows through the annular air ventilation passage 4 in the direction of the arrow, and is blown from one of the ventilation ports 3. Send it indoors. In the meantime, the air to be inhaled passes through the suction noise muffling chamber A chamber formed on the side while passing dust through the filter 5 of the main shaker, and is aerated in the discharge noise primary muffling chamber B chamber in front of the blower 7. Heat exchange and humidification are performed at an appropriate temperature by the heat exchange coil 8 while suppressing the noise in the interior, and the cold and warm air that has been heat exchanged at the appropriate temperature bends in the horizontal silencing chamber direction, and the discharge noise is increased. In the room C of the next muffling room, the noise of noise in the ventilation is naturally removed, and it is possible to send noiseless and quiet cool and warm air into the room. That is, the present invention has the effect that the air flowing in the air blow passage in the machine flows into the diffusion chamber with a larger diameter than the narrow ventilation passage together with the noise noise, and at the same time, some wind noise is reduced to muffle the sound. Utilizing an annular air ventilation path 4
The sound is muffled as it passes through each of the muffling chambers A, B, and C that are formed inside, and effective noise cancellation can be obtained.
Moreover, since the partition plate on the ceiling of each of the silencing chambers has a function of suppressing the noise of noise together with the guide of the air flow, it is of course expected that a more effective silencing effect will be obtained.

Further, according to the second aspect of the present invention, there is provided the airflow rectifying plate 10 in which the passage inlet portion of the partition plate c which forms the secondary sound-deadening chamber C is provided so as to project upward or obliquely. Further, by disposing one or several muffling and airflow adjusting plates 11 in the vicinity of the air supply port 3, the air flowing in the muffling chamber is naturally rectified while flowing in the air supply port 3 in a curved manner. It is possible to expect quieter ventilation by preventing turbulence from occurring in the three air vents and inside the chamber, and by preventing outflow of noise noise.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings. An intake port 2 and an air supply port 3 are provided adjacent to each other at the upper part of a machine body 1, and several partition plates a and b are provided inside the machine body. , C
To form a substantially annular air ventilation path 4 that communicates with the intake port 2 on one side with the suction port 2 as the starting end, and a filter mechanism 5 such as a pre, main, etc. in the air intake side passage of the passage downwardly. Each of the electric motor 6, the blower 7, and various mechanisms such as a heat exchange coil 8 formed by hot water and cold water coils, a humidifier 9, and a drain device are installed in the other air passage side passage. In some cases, the filter mechanism 5 may be provided on the outlet side of the air passage,
Alternatively, the pre and main filters can be installed separately on both sides. In the air conditioner having the above-mentioned structure, the air inlet side of the annular air ventilation passage 4 formed inside the air conditioner, for example, the side passage of the filter mechanism 5 is substantially inverted triangular with upper and lower partition plates a and b. In the same manner as above, the discharge sound primary silencing chamber B chamber is communicated with the suction noise silencing chamber A chamber having a large expanded space, and the blower opening front space part of the lower blower 7 is formed to communicate with each other. The upper part of the upper ventilation passage of the heat exchange coil 8 installed in front of the blower 7 is bent in the horizontal direction by the partition plate c, and a horizontal silencing chamber, that is, a secondary silencing chamber C for the discharge sound is provided in the air outlet side passage. Forming the muffler chamber C
The outlet passage of is communicated with the air supply port 3 which is opened in the upper part of the machine body 1. Further, it is also considered that the silencing chambers A and B may have any shape such as a quadrangular shape, a polygonal shape or an elliptic shape other than the triangular shape described above.

Further, in addition to the wall surface of the ventilation passage in the aircraft,
A sound absorbing material may be provided on the inner surface side of each of the sound deadening chambers A, B, and C, or an appropriate sound deadening mechanism may be provided.

Further, in the present invention, as shown in the drawings, the end portion of the passage inlet portion of the partition plate c forming the discharge sound secondary silencing chamber C forming the horizontal silencing chamber extends obliquely upward or upward. An air flow rectifying plate 10 of a proper length provided by projecting and projecting, a plate-like or appropriately shaped muffling and air flow adjusting plate 11 inside the vicinity of the air supply port 3 at the upper part with a slight gap x or A number of units are installed to rectify the air flow in the muffling chamber and to prevent turbulent flow near the inside of the air supply port 3 especially at the time of air discharge, and at the same time expect rectification and muffling action. Is. Reference numeral 12 indicates a pipe incorporating a mechanism such as a water-control motorized valve. Since the above description is based on the embodiment, it is naturally not limited to the illustrated shape, and not only the arrangement of the filter but also the heat exchange coil and other mechanisms can be arbitrarily changed depending on the usage conditions,
Further, the installed body may be installed in any shape such as a vertical arrangement in a slanting manner depending on the ventilation relationship of the ventilation passage or in a horizontal direction.

[0013]

As described above, according to the present invention, an annular air ventilation passage formed by partitioning a plurality of partition plates is formed inside the machine body, and the air is sucked into the air intake side passage by the partition plate. A large air diffusion chamber that communicates with the mouth is formed vertically, the upper part is the suction noise muffling chamber A, the lower diffusion chamber that is formed in front of the blower is the discharge primary muffling chamber, and it is horizontal inside the outlet. Since the sound deadening chamber of the shape, that is, the discharge sound secondary sound deadening chamber C is provided in the same air passage to communicate with each other, in the room A, the noise generated at the time of intake and in the air passage is generated. In the lower room B, the noise from the air blower from the blower is eliminated, and the noise such as the electric noise is eliminated, and the air that is going to rise due to the heat exchange is removed. Bend horizontally from the vertical flow at the partition plate c to the room C Sequentially flows, is the flight of 騒振 sound may be able to occupy performed delivered to the room from the air supply port almost quiet cold warm naturally suppressed therebetween. That is, according to the present invention, the air flowing in the air passage is provided by forming the silencer chamber A and the discharge sound primary and secondary silencer chambers B and C as a large space in the annular air ventilation passage. Is diffused into a room with a larger space than in a narrow passage, and at the same time the noise of noise in the air is suppressed by the ceiling of the partition plate of each room, and further, various noises circulating in the aircraft continue It will be suppressed in the muffler room on the room side and the secondary side.
Due to such an effect, it is possible to surely and easily supply quiet air into the room which is quieter than the air supply port as well as the noise that leaks from the air intake port.

Further, in the present invention, as in claim 2, the airflow rectifying plate 10 is provided by extending the passage inlet portion of the partition plate c forming the horizontal silencing chamber to the chamber C upward or upward.
By providing the structure, the air flowing in the blower passage 4 is bent more positively in the horizontal direction than in the vertical direction, and at the same time, the flow is curved upward again in an inverted U shape. Therefore, the blower passage is very long. By virtue of the detouring action of the air flow that is formed again, during that time, the noise of noise that flows with the air in the passage is naturally eliminated, and a better silencing effect can be expected.

Further, by installing the muffling and airflow adjusting plate 11 in the vicinity of the air supply port 3 of the horizontal muffling chamber according to the third aspect, turbulent flow is prevented from being generated in the muffling chamber and at the same time the function of rectification and muffling is achieved. have. Further, it is a convenient invention that the space inside each muffling room can be effectively used as a control panel installation and piping space, and therefore the overall shape can be made compact.

[Brief description of drawings]

FIG. 1 is a front view schematically showing an internal mechanism as an example of an air conditioner according to the present invention.

[Explanation of symbols]

 1 Aircraft 2 Intake port 3 Air supply port 4 Annular air ventilation path 5 Filter 6 Electric motor 7 Blower 8 Heat exchange coil 9 Humidifier 10 Airflow rectification plate 11 Airflow adjustment plate 12 Piping A Suction sound muffling room B Discharge sound Primary muffling Chamber C Discharge sound secondary muffling chamber a, b, c Partition plate

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[Procedure amendment]

[Submission date] March 18, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

Further, in the present invention, as shown in the drawings, the end portion of the passage inlet portion of the partition plate c forming the discharge sound secondary silencing chamber C forming the horizontal silencing chamber extends obliquely upward or upward. An air flow rectifying plate 10 of a proper length provided by projecting and projecting, a plate-like or appropriately shaped muffling and air flow adjusting plate 11 inside the vicinity of the air supply port 3 at the upper part with a slight gap x or A number of units are installed to rectify the air flow in the muffling chamber and to prevent turbulent flow near the inside of the air supply port 3 especially at the time of air discharge, and at the same time expect rectification and muffling action. Is. In addition, the above-mentioned air flow rectifying plate 10 and a muffler / air flow adjusting plate
11 is an arbitrary position angle manually or by manpower, electric type, etc.
A structure that is movably attached so that it can be stopped once
As a result of the
Degree, optimum noise value, wind flow, air volume, etc. can be freely changed and adjusted
You can also ask. Reference numeral 12 indicates a pipe incorporating a mechanism such as a water-control motorized valve. Since the above description is based on the embodiment, it is naturally not limited to the illustrated shape.
The heat exchange coil and other mechanisms can be arbitrarily changed according to the usage conditions, and the installed body is also inclined in a ventilation relationship in the ventilation passage or in any horizontal orientation, such as a vertical orientation. It is also possible to install it at any time.

Claims (4)

[Claims] 1. An annular air ventilation passage is formed inside the machine body by partition plates a, b, and c for communicating an intake port and an air supply port, and the annular air ventilation channel is provided with an inlet / outlet portion or an outlet portion. , A proper filter mechanism such as a main filter, and a mechanism such as an electric motor, a blower, and a heat exchange coil are arranged in the passage, and the partition plates a, b, and c are used for the side A chamber of the air receiving side passage and the blower The room B is formed as an air diffusion room, the room A above is used as a suction sound deadening room, the room B is used as a discharge sound primary sound deadening room, and the suction passage 11 above the heat exchange coil is bent horizontally. A low-noise air conditioner characterized in that a secondary sound muffling chamber composed of a horizontal chamber is provided so as to communicate with each other in the annular air ventilation passage. 2. The air conditioner having the structure according to claim 1, wherein a plate-like shape is provided in a passage inlet portion of a partition plate c for forming a discharge sound secondary silencing chamber C or in a passage near the inside thereof. The low-noise air conditioner characterized in that the airflow adjusting plate is provided so as to project upward or obliquely, and the airflow flowing in the passage is rectified. 3. The air conditioner according to claim 1 or 2, wherein a muffler / air flow adjusting plate is vertically provided at an appropriate place inside the secondary sound muffling chamber C or near the air supply port. An air conditioner characterized in that one or several of them are attached and installed. 4. The air conditioner according to claim 1 or 2, wherein a suction sound muffling chamber, a discharge sound primary muffling chamber, and a discharge sound secondary muffling chamber which are respectively formed in the annular air ventilation passage. A low noise type air conditioner characterized in that a sound deadening mechanism of an appropriate shape is attached inside each room.