JPH05149581A - Air conditioner - Google Patents

Abstract

PURPOSE:To control vibrations and noises by a method wherein an indoor air circulation fan and an outdoor air introduction fan are arranged below a casing and supported by a base frame. CONSTITUTION:Inside a casing 4, an indoor air circulation fan 14 for supplying air from a vent 10 through an indoor air heat exchanger 5 to an air feeder and an outdoor air introduction fan 15 to introduce air from an outdoor air inlet 12 through an outdoor heat exchanger 6 to an exhaust outlet 13 are installed. These fans 14 and 15 are both arranged downward of the casing 4 and supported by a base frame 1 which is fixed onto a floor not to vibrate. By this, vibrations of the whole device during operation and noises spreading into environment can be prohibited.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base frame, and a side frame provided upright on the peripheral edge of the base frame to cover the lateral sides.
A casing having a top frame mounted on the upper side of the side frame is provided, and one has an indoor air heat exchanger and an outdoor air heat exchanger that function as an evaporator and the other functions as a condenser. A heat pump device is installed in the casing, and return air from the room to be air-conditioned is introduced into the casing to conduct heat to the indoor air heat exchanger, and return air conducted to the indoor air heat exchanger is An air supply port that sends out as air supply to the air-conditioned room, an outside air port that is taken into the casing so that the outside air is conducted to the outdoor air heat exchanger, and an outside air that is conducted to the outdoor air heat exchanger is outdoors. An indoor air circulation fan for ventilating from the return air port to the air supply port through the indoor air heat exchanger and an outdoor air heat exchanger from the outdoor air port The exhaust About air conditioner to the outside air introducing fan was furnished to said casing for causing air to.

[0002]

2. Description of the Related Art Conventionally, in the above air conditioner, an indoor air circulation fan and an outside air introduction fan are arranged on the upper side of the casing and supported by the upper side frame of the casing or the top frame. .

[0003]

However, since the above casing is installed with the base frame on the lower side fixed to the floor, the upper side frame or the top frame portion located on the upper side is easily shaken. Has become. Therefore, when a heavy fan is supported by the upper side frame or the top frame of the casing, vibration due to rotation of the fan is transmitted to the casing and vibrates. As a result, the entire device vibrates and a large noise is generated. was there. Therefore, in order to suppress vibration and noise, it is conceivable to increase the supporting strength of the casing to make it sturdy, but in this case, there are drawbacks that the weight of the device becomes heavy and the cost becomes high.

The present invention has been made in view of the above circumstances, and an object thereof is to prevent vibration and noise of the entire apparatus due to the operation of a ventilation fan while avoiding an increase in apparatus weight and an increase in cost. To provide a controlled air conditioner.

[0005]

A first characteristic configuration of the air conditioner of the present invention is that both the fans are arranged below the casing and are supported by the base frame.

The second characteristic structure is provided with ducts for forming an air passage extending from each outlet of the indoor air circulation fan and the outside air introduction fan to each of the air supply port and the exhaust port. On the point.

[0007]

According to the first characteristic construction of the present invention, both the fans for circulating the indoor air and introducing the outside air are arranged on the lower side of the casing, and are fixed to the floor to prevent them from vibrating. Since they are supported, vibration of the casing supporting both fans is suppressed when the fans are operating, without increasing the supporting strength of the casing.

Further, according to the second characteristic configuration, the air supply and exhaust air blown out from each fan pass through the duct without being in contact with the casing and are sent to the outside, so that the casing is brought into contact with the wind during ventilation. Vibration is eliminated.

[0009]

Therefore, according to the first characteristic configuration, it is possible to suppress the vibration of the entire apparatus and the generation of noise to the surroundings during the operation while avoiding the increase of the apparatus weight and the increase of the cost.

Further, according to the second characteristic structure, it is possible to more effectively suppress the generation of vibration and noise, and to further enhance the effect of the first characteristic structure.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a system type package air conditioner as an air conditioner will be described below with reference to the drawings.

As shown in FIGS. 1 to 7, a quadrangular base frame 1, a side frame 2 erected on the peripheral edge of the base frame 1 to cover the lateral sides, and a side frame 2 of the side frame 2. A casing 4 having a rectangular parallelepiped shape is configured by the top frame 3 placed on the upper side. Inside the casing 4, the indoor air heat exchanger 5 and the outdoor air heat exchanger 6, one of which functions as an evaporator and the other of which functions as a condenser, by switching the flow direction of the refrigerant, and both of these heat exchangers. A compressor 7, an accumulator 8, an expansion valve 9, and a four-way valve 44 arranged in a refrigerant pipe connecting 5 and 6.
A heat pump device 20 (see FIG. 8) including the above components is installed.

On the upper surface of the casing 4, a return air port 10 for taking in return air RA from the air-conditioned room into the casing 4.
The return air port 10 is provided with a first return air port 10A for introducing the return air RA into the casing 4 so as to conduct to the indoor air heat exchanger 5, and the return air RA from the air-conditioned room Outdoor air heat exchanger 6 by diverting and using it as diverted return air RA '
Second return port 10 taken into the casing 4 so as to be electrically connected to
B is arranged on the back side, respectively. Further, on the upper surface of the casing 4, the return air RA conducted to the indoor air heat exchanger 5 is returned.
Air supply port 11 for sending air as air supply SA to the air-conditioned room,
The outside air OA is introduced into the casing 4 so that the outside air OA is conducted to the outside air heat exchanger 6, and the outside air OA conducted to the outside air heat exchanger 6 is formed as an exhaust air EA to the outside. is doing. Inside the casing 4, an indoor air circulation fan 14 for ventilating from the return air port 10 through the indoor air heat exchanger 5 to the air supply port 11,
From the outdoor air outlet 12 through the outdoor air heat exchanger 6 to the exhaust outlet 13
An outside air introduction fan 15 for ventilating the inside is installed.

The casing 4 supports the heat pump device 20 as a main part in its upper portion excluding the base frame 1, as shown by the lines XX and YY in FIGS. 1 and 2. The central portion 4A, the left side portion 4B that supports the indoor air circulation fan 14, and the right side portion 4C that supports the outside air introduction fan 15 are divided into three parts. The above-mentioned parts 4A, 4B, and 4C are separated and can be connected to the original casing 4 in a freely connectable manner.

The central portion 4A is divided into a left indoor air side air passage chamber 19 and a right outdoor air side air passage chamber 21 by a central partition wall 18 provided in the vertical direction at the left and right central positions. In the indoor air side air duct chamber 19, the compressor 7 is installed on the base frame 1 via a vibration damping steel plate 16 and a vibration damping rubber 17, and an angle 2 extending laterally from a central partition 18 is provided.
The accumulator 8 is installed while being supported on 2. On the left side of the indoor air side air duct chamber 19, there is a left side partition wall 23 for separating from the left side portion 4B of the casing 4.
The left partition wall 23 is provided with a portion 23A extending upward from a bottom plate 24 placed on the base frame 1, and this portion 2
It is composed of a horizontal portion 23B which is bent at a right angle from the upper portion of 3A to the left and is horizontal, and a portion 23C which extends upward from the left end portion of the horizontal portion 23B. The horizontal part 23
Below B, support plates for supporting the same are erected at front and back positions, respectively.

Above the horizontal portion 23B, in order toward the left side portion 4B of the casing 4, a filter 25,
The indoor air heat exchanger 5 and the humidifier 26 are installed in a vertical posture with their respective surfaces facing and close to each other. The left side surface of the humidifier 26 is exposed in the left side portion 4B through an opening formed in the left side partition wall 23. As a result, the return air RA and the diverted outside air OA 'that have been conducted to the indoor air side air passage chamber 19 are subjected to heat exchange to remove dust and humidify, and then pass through the left side portion 4B.

At the upper part of the indoor air side air passage chamber 19, a first return air damper 27 for adjusting the air volume is provided below the first return air port 10A and below the second return air port 10B. A second return air damper 28 for adjusting the air flow rate is installed in each.
The first return air damper 27 and the second return air damper 28 have control motors 2 for adjusting their opening degrees.
Rotational driving force is transmitted from 7A and 28A, respectively. Below the second return air damper 28 on the back side, there is provided a return mood airflow passageway portion 29 in which an airflow passage is formed obliquely downward to the right toward the outdoor air side airflow passage chamber 21. Road 29
An opening is formed in the central partition wall 18 located at the lower tip of the. As a result, the split return air RA ′ taken from the second return air port 10B is merged with the outside air OA.

A first outside air damper 30 is provided above the outside air side air passage chamber 21 at a position spaced downward from the outside air port 12 by a predetermined distance, and the center of the outside air port 12 on the lower left side. The partition wall 18 is provided with a second outside air damper 31 for dividing a part of the outside air OA, whereby the divided outside air OA 'is joined to the return air RA from the first return air port 10A. Rotational driving forces are transmitted to the first outside air damper 30 and the second outside air damper 31 from control motors 30A and 31A for adjusting their opening degrees.

Below the first outside air damper 30, the outdoor air heat exchanger 6 is provided on the bottom plate 24 in an inclined vertical posture in which the upper part is on the front side and the lower part is on the back side. Support stand 4
It is supported and installed by 3. Further, on the right side of the outdoor air heat exchanger 6, there is provided a right side partition wall 32 for isolating the right side portion 4C from the right side position of the outdoor air heat exchanger 6 to the inner side. It is provided. As a result, the outside air OA that has passed through the first outside air damper 30 and the diverted return air RA ′ from the return mood airflow path portion 29 are heat-exchanged from the upper surface to the lower surface of the outdoor air heat exchanger 6. I am passing it.

In the left side portion 4B, a support plate 33 is provided on a bottom plate 24 placed on the base frame 1 via a vibration-proof rubber 17, and the indoor air circulation fan 14 is mounted on the support plate 33. It is installed and aligned with the fan rotation axis of the indoor air circulation fan 14 by the support 34.
In addition, an indoor air circulation motor 36 is installed so as to transmit the rotational force via the coupling 35.
A duct 37 for forming an air passage extending from the outlet 14A of the indoor air circulation fan 14 to the air supply port 11.
The lower part is supported by the outlet 14A and the upper part is supported by the air supply port 11. As a result, the return air RA and the split outside air OA ′ that have passed through the indoor heat exchanger 5 are sucked by the indoor air circulation fan 14 and then blown from the air supply port 11 to the air-conditioned room through the duct 37. I am trying to do it.

In the right side portion 4C, a support plate 38 is provided on the bottom plate 24 placed on the base frame 1 via a vibration-proof rubber 17, and the outside air introduction fan 1 is mounted on the support plate 38.
5 is installed, and an outside air introduction motor 41, which is aligned with the fan rotation axis of the outside air introduction fan 15 by the support base 39 and is coupled to transmit the rotational force via the coupling 40, is installed. Has been done. A duct 42 for forming an air passage is provided across the outlet 15A of the outside air introduction fan 15 and the outlet 13 with the lower portion supported by the outlet 15A and the upper portion supported by the outlet 11. .. As a result, the outside air OA and the split return air RA ′ that have passed through the outdoor air heat exchanger 6 are sucked by the outside air introduction fan 15 and then passed through the duct 42 to the exhaust port 13.
I try to blow it out from the outside. Although not shown, a sound absorbing resin sheet is attached to the inner surfaces of the ducts 37 and 42.

Incidentally, the dampers 27, 2 for adjusting the air flow rate.
By adjusting 8, 30, and 31, the split ratio of the return air RA, and
By appropriately changing and adjusting the diversion ratio of the outside air OA, the fresh ventilation amount for the air-conditioned room can be appropriately changed and adjusted. Therefore, the whole amount of the return air RA is exhausted to the outside through the outdoor air heat exchanger 6, while the entire amount of the outside air OA is supplied to the air-conditioned room through the inside air heat exchanger 5. So-called all-fresh driving is also possible.

[Embodiment] In the above embodiment, two fans, that is, the indoor air circulation fan 14 and the outside air introduction fan 15 are provided, but the indoor air circulation fan is supplied to the return air fan. It may be provided separately in two of the care fans. The same applies to outside air introduction.

In the above embodiment, the casing 4 is divided into three parts, but other than this, it may be divided into two parts.

Further, in the above embodiment, the return air 10 is returned to the return air R.
The first return air port 10A for A and the second return air port 10B for return air RA 'are separately configured, but without doing this, the return air port 10 is made one and the downstream side is divided. It may be allowed to.

Further, in the above embodiment, the system type package air conditioner is exemplified as the air conditioner, but the present invention can be applied to other separate type air conditioners and the like.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

1] Front sectional view of an air conditioner

[Fig. 2] Plan view of the air conditioner

FIG. 3 is a left side sectional view of the air conditioner taken along the line D-D in FIG. 1.

FIG. 4 is a left side sectional view of the air conditioner taken along the line C-C in FIG. 1.

5 is a left side sectional view of the air conditioner taken along the line BB in FIG.

FIG. 6 is a right side sectional view of the air conditioner taken along line FF in FIG.

7 is a right side sectional view of the air conditioner taken along the line EE in FIG.

[Fig. 8] System diagram of refrigerant and air passage

[Explanation of symbols]

 1 Base Frame 2 Side Frame 3 Top Frame 4 Casing 5 Indoor Air Heat Exchanger 6 Outdoor Air Heat Exchanger 10 Return Air Port 11 Air Supply Port 12 Outdoor Air Port 13 Exhaust Port 14 Indoor Air Circulation Fan 14A Outlet Port 15 External Air Introduction Fan 15A Outlet 20 Heat pump device 37 Duct 42 Duct RA Return air SA Supply air OA Outside air EA Exhaust

Claims (2)

[Claims] 1. A base frame (1) and this base frame (1)
Side frame (2) erected to cover the lateral sides on the periphery of the
And a casing (4) including a top frame (3) placed on the upper side of the side frame (2), one of which serves as an evaporator,
In addition, a heat pump device (20) having the indoor air heat exchanger (5) and the outdoor air heat exchanger (6), the other of which functions as a condenser, is installed inside the casing (4), and the Return air (RA) is introduced into the casing (4) so as to conduct the return air (RA) to the indoor air heat exchanger (5), and the return air conducted to the indoor air heat exchanger (5) An air supply port (11) for sending (RA) as air supply (SA) to the room to be air-conditioned, and an external air (OA) to the casing (4) to conduct to the outdoor air heat exchanger (6). The outside air (OA) conducted to the outside air inlet (12) to be taken in and the outside air heat exchanger (6) is exhausted to the outside (E).
An indoor air circulation fan (A) is provided for sending out air as a) and for ventilating from the return air port (10) through the indoor air heat exchanger (5) to the air supply port (11). 14) and an outside air introduction fan (15) for ventilating the outside air heat exchanger (6) from the outside air port (12) to the exhaust port (13) in the casing (4) A machine, wherein both the fans (14), (15) are arranged below the casing (4), and the base frame (1) is provided.
Air conditioner designed to be supported by. 2. The outlets (14A), (1) of the indoor air circulation fan (14) and the outdoor air introduction fan (15).
5A) to the air supply port (11) and the exhaust port (13)
A duct (37) for forming an air passage over each of them,
The air conditioner according to claim 1, further comprising (42).