JPS62294823A - Heat exchanging unit - Google Patents

Abstract

PURPOSE:To permit the reduction of noise generated from a heat exchanging unit, by a method wherein a refrigerant pipeline, connected to a compressor, is fixed to the mounting plate of a casing and the outer sheet of the casing, constituted of vibration-damping steel sheets, is abutted against the mounting plate. CONSTITUTION:A casing 1 is provided with a compressor 15, a refrigerant pipeline, connected to the compressor 15 and equipped with a connector at the tip end thereof, and a mounting plate 20, the which the connector is fixed. The outer sheet 41 of the casing at the side of the mounting plate is constituted of a vibration-damping steel sheet. The vibration-damping steel sheet is made by pinching a filmy resin with the thickness of 0.1mm between two sheets of steel sheets with the thickness of 0.4mm and, thereafter, integrating them. As a result, the noise of the outer sheet may be restricted to low and the noise of the title unit may be restricted to low even when vibration, generated upon operating the compressor, is transmitted to the outer sheet 41 through the refrigerant pipeline and the mounting plate.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (a) Field of Industrial Application The present invention relates to a heat exchange unit having a compressor built into a housing.

(b) According to the content of the document, an example of the structure of a heat exchange unit with a compressor built into the conventional technology housing is disclosed in Japanese Utility Model Application Laid-open No. 61-44165. A compressor is installed on the bottom plate of the housing.

Also, a pulp table is fixed to the edge of this bottom plate.

This pulp table is equipped with a connector that connects the pipes between units. This connector and the compressor are connected by refrigerant piping. Furthermore, the outer panel of the casing is attached to this pulp table.

(/C Problem to be Solved by the Invention Such a Heat Exchange Unit) In an IC, when a compressor whose rotation speed can be changed depending on the air conditioning load is incorporated into this heat exchange unit, the rotation speed of the compressor When this becomes high, the vibrations of the compressor are transmitted to the pulp table via the refrigerant piping, and as a result, the outer plate connected to the pulp table also vibrates, potentially increasing the noise of the heat exchange unit.

An object of the present invention is to suppress the noise generated from this heat exchange unit to a low level even if the vibrations of the compressor are transmitted to the pulp table and the outer panel of the unit.

2) Means for Solving the Problems In order to achieve this object, the present invention provides a compressor and a mounting plate arranged on the bottom plate of the casing, and a connection for connecting the inter-unit piping to the mounting plate. A fitting is attached to the compressor, and the connecting fitting and the compressor are connected through a refrigerant pipe, and the outer plate on the side of the mounting plate is made of a damping steel plate.

(E) By configuring the outer plate with a damping steel plate that is fixed to the mounting plate, even if the vibrations of the compressor are transmitted to this mounting plate via the refrigerant piping, the noise of the outer plate is suppressed. .

(F) Embodiment In Fig. 1, 1 is the outdoor heat exchange unit of a separate air conditioner. 2 is the bottom plate of this unit, which is folded into an abbreviated shape and integrated with the back plate 3. has been done. A partition plate 4 divides the bottom plate into a mechanical area 5 and a heat exchange area 6, and the front edge 7 of this plate is fixed to the rising edge 8 of the bottom plate 2.

9 is a heat exchanger erected facing the suction port 10 of the back plate 3;
11 is a right side tube plate of the heat exchanger 9, the front piece 12 is fixed to the rear edge 13 of the partition plate 4, and the rear piece 14 is fixed to the back plate 3, respectively.

15 is a compressor, which is placed in the mechanical area 5 of the bottom plate 2. This compressor 15 is configured such that the rotational speed of the electric motor within this compressor 15 is changed by input from a frequency output power supply device that can vary the power supply frequency from 30 TIz to 125 Hz. 1
A discharge pipe 6 extends upward from the top surface of the compressor 15, and is bent into an inverted U shape, with its tip 17 facing downward. 18 is a four-way valve that controls the refrigerant discharged from the compressor 15, and a refrigerant pipe 19 is bent downward into a U-shape.
This pipe 19 is connected to the tip 17 of the discharge pipe 16 of the compressor 15 described above. Reference numeral 20 denotes a mounting plate (pulp stand) attached from the right edge 21 of the bottom plate 2 to the rising piece of the back plate 3, with a raised part 22 in the center.
is formed.

23 is a notch formed in this mounting plate 20, and an opening is located at the front edge of this mounting plate 20. This cutout 2
3, a refrigerant pipe 25, 26 connected to the pulp 24 is inserted as shown in FIG.
It is fixed at 2. One refrigerant pipe 26 is directly connected to a pipe 27 extending above the four-way valve 18. ,2
8 is a fan motor stand, and one end 29 is a raised part 30 of the bottom plate 2.
The other end 31 is fixed to the upper part 32 of the heat exchanger 9. 33 is a fan, and 34 is a motor for driving this fan, which is attached to the motor stand 28.

35 is a front panel, a lower edge 36 is engaged with the front edge 8 of the bottom plate 2, and an upper edge 37 is screwed to the other end 31 of the fan motor stand 28. A blowout grille 38 is attached to this front panel 35. 39 is a left side panel that is applied from the left side of the unit. 40 is a suction port provided on this left side panel.

Reference numeral 41 denotes a right side panel (outer panel), which is applied from the right side of the unit 1. This right surface measuring panel 41 has an opening 42 for taking out electrical components and a notch 43 for exposing the pulp table 20. A packing material (not shown) is pasted on the inner circumferential surface 44 of this notch 43, so that the space between the pulp table 20 and the periphery of the notch 43 is sealed with the packing material. This right side panel 4
1 upper edge 45 is the flange piece 4G of the front panel 350 top plate
In addition, the lower edges 47 are screwed to the upright pieces 21 of the bottom plate 2, respectively. As shown in FIG.
It is made by molding what is called a vibration damping steel plate that is integrated by sandwiching the film-like resin 49 of Im. A heat exchange unit that uses a 0°8B thick steel plate for the panel? This shows a comparison of the noise values when operating the heat exchange unit.The measurement locations for this noise value were a point 1rrL in front of the heat exchange unit and a point 1m behind the heat exchange unit.

It can be seen from this figure 4 that the operating frequency of the compressor is 10
In the case of 0FIz or less, there is not much difference between the noise value of a heat exchange unit using a damping steel plate and the noise value of a heat exchange unit using a steel plate with a thickness of 0.8 *m. However, when the temperature exceeds 10011z, the noise value of a heat exchange unit using damping steel plates is approximately 1 to 4 d higher than the noise value of a heat exchange unit using a 0.8n thick steel plate.
B: The noise level was kept low. This is because the rotation speed of the electric motor in the compressor 15 increases, and the vibrations of the compressor 15 are transmitted to the pulp table 20 via the refrigerant pipes 16, 27, and 26, and the right side panel that is in contact with the pulp table 20 41 vibrates, it is thought that this is because the noise of the right side panel is suppressed to a low level in the heat exchange unit that uses a damping steel plate for the right side panel.

The damping steel plate described above is one in which a resin 49 with a thickness of 0.1 m is sandwiched between two steel plates 48 with a thickness of 0.4 ttrm, but other examples of damping steel plates are also available. As for thickness 0.
0.0 mm between the 4 mm steel plate and the 0.7 xx thick steel plate.
05 Kamoh resin is used, and the right side of this unit is placed so that the 0.7mm thick steel plate is on the outside of the heat exchange unit and the 0.4fl thick steel plate is on the inside of the unit. A front panel may also be attached. For example, if you do this,
When fixing this panel 41 and the bottom plate 2 with tapping screws from this panel side by applying them to the edge 21 of the bottom plate 2 on the right side panel 41, the screws should first be attached to the thicker side (thickness 0.7 vg).
), making it easier for this screw to screw into the panel.

(G) Effects of the Invention As described above, the present invention provides a mounting plate on the housing, a refrigerant pipe connected to the compressor is fixed to the mounting plate, and a vibration-damping steel plate is attached to the mounting plate. Since the outer panel of the housing is in contact with the outer panel of the compressor, even if the vibrations generated during operation of the compressor are transmitted to this outer panel via the refrigerant piping and the mounting plate, the noise of this outer panel is kept low (reduced) and the unit is noise can be kept low.

[Brief explanation of the drawing]

The drawings show an embodiment of the heat exchange unit of the present invention. Fig. 1 is an exploded perspective view of the unit, Fig. 2 is an enlarged perspective view of Fig. 1, and Fig. 3 is a view of the right side panel ( outer panel)
FIG. 4 is a cross-sectional view of the unit, and FIG. 4 is a noise level characteristic diagram when the unit is operated. 15... Compressor, 2o... Shot plate (pulp table). 24...Connecting tool (pulp), 16,26.27.
...Refrigerant piping, 41... Outer plate (right side panel).

Claims (1)

[Claims] (1) In a heat exchange unit that has a compressor in the housing, a refrigerant pipe connected to the compressor and equipped with a connector at the tip, and a mounting plate to which the connector is fixed, the housing on the mounting plate side A heat exchange unit characterized in that the outer plate of the body is made of vibration-damping steel plates.