JPH0486464A - Freezer device - Google Patents

Abstract

PURPOSE:To reduce noise in a freezer device using a capirally tube by a method wherein an adhering vibration-proof member and a sound insulating member covering an outer surface of the vibration-proof member are wound around the capirally tube and an inlet pipe of an evaporator. CONSTITUTION:Vibration-proof member 8 is wound around an inlet port of an indoor heat exchanger 7 and an extreme end of a capirally tube 6. This vibration-proof member 8 is a double-structure comprised of a vibration-proof member 9 having adhering characteristic such as rubber at its inner side and a sound insulating member 10 such as an iron plate for covering an outer surface of the vibration-proof member. With such an arrangement, vibration and noise generated by occurrence of cavitation caused by a difference between an inlet diameter of the capirally tube 6 and an inlet diameter of a heat exchanger 7 are absorbed and shielded. Noise in the indoor side is reduced. As a structure of the vibration-proof member 8, the inner vibration-proof member 9 is of only butyle rubber of low density and the outer sound insulating member 11 is of material in which butyle rubber having a high density is added with carbon or one in which metallic powders are mixed to it.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a refrigeration device such as an air conditioner using a capillary tube.

<Prior Art> Generally, in the refrigerant circuit of an air conditioner, the connection portion between the capillary tube and the evaporator has a connection structure in which the pipe diameters are different, and this is a source of noise. That is,
In an air conditioner, refrigerant passing through a capillary tube generates noise (roaring noise) due to rapid pressure reduction. As a means for suppressing this noise, for example, as shown in the cooling device disclosed in Japanese Utility Model Publication No. 47389, a tapered or gradually expanding diameter hole is provided at the outlet of the capillary tube to reduce the jetting speed of the liquid refrigerant and reduce the noise. The points to be made are disclosed.

<Problems to be Solved by the Invention> However, when a capillary tube exists on the indoor side, the above-mentioned measures are often insufficient, and the noise has not yet been eliminated.

In view of the above-mentioned circumstances, an object of the present invention is to provide a refrigeration system that solves the above-mentioned problems by wrapping a damping material, which is a combination of a vibration-proofing material and a sound-proofing material, around the connection part of a capillary tube. It is.

Means for Solving the Problems> The present invention provides a refrigeration system in which a compressor, a condenser, a capillary tube, and an evaporator are sequentially connected. A damping material made of a sound insulating material is wrapped around the outer surface of the vibration damping material.

Effect> As mentioned above, since the capillary tube and the inlet of the heat exchanger are covered with a sticky vibration-proofing material,
The pipe surface has good adhesion and vibrations are suppressed, and the outer periphery is covered with a high-density sound insulating material, which reduces noise.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

Fig. 1 shows the refrigerant circuit of a refrigeration system, where 1 is a compressor, and one side of a four-way valve 2 connected to this discharge pipe is connected to an outdoor heat exchanger 3 which serves as a condenser, and this heat exchange A capillary tube 6 facing the indoor heat exchanger 7 is connected to the capillary tube 5 connected to the other end of the vessel 3, and the other end of the indoor heat exchanger 7 is returned to the compressor via the four-way valve 2. The connection constitutes a refrigerant circuit. Reference numerals 4 and 4' designate check valves arranged in parallel in opposite directions in the capillary tubes 5 and 6, respectively.

8 is the inlet of the indoor heat exchanger 7 and the capillary tube 6
The damping material 8 has a sticky vibration damping material made of rubber or the like on the inside, and a sound insulation material 10 made of a steel plate or the like covering the outer surface of the vibration damping material. It has a double structure consisting of.

Next, to explain this effect, for example, during cooling operation, refrigerant discharged from the compressor 1 flows through the four-way valve 2 to the outdoor heat exchanger 3, and the refrigerant condensed here flows through the check valve 4. It passes through the capillary tube 6, evaporates in the indoor heat exchanger 7, performs a predetermined cooling action, and returns from the four-way valve 2 to the compressor 1, forming a refrigeration cycle.

In this case, the surface of the pipe connection between the end of the capillary tube 6, which is the indoor side, and the indoor heat exchanger 70, which is the artificial part, is covered with an adhesive vibration damping material 9 on the inside and a steel plate on the outside, as shown in FIG. Since the vibration damping material 8 is arranged to cover the cylindrical sound insulation material 10, the vibration and noise caused by the cabin cheese caused by the difference in the inlet diameter of the gear pillar tube 6 and the heat exchanger 7 are absorbed and sound insulated. This reduces noise on the indoor side.

The structure of this damping material 8 is, for example, as in another embodiment shown in FIG. 3, where the inner vibration isolating material 9 is made of only low-density butyl rubber, and the outer sound insulating material 11 is made of high-density butyl rubber with carbon. Vibration and noise can be reduced in the same manner as described above even if a metal powder is added or a mixture of metal powder is used.

<Effects of the Invention> As described above, according to the present invention, a sticky vibration isolating material and a sound insulating material covering the outer surface of this vibration isolating material are provided at the connection portion of the gear pillar tube and the evaporator inlet. Since it is wrapped with vibration damping material made of Therefore, it is possible to effectively reduce noise.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a refrigerant circuit diagram of a refrigeration system, FIGS. 2A and B are a vertical side view and front view of a damping material, and FIG. 3 is a diagram of another embodiment. FIG. 2 is a sectional view of a main part of a damping material showing an example. DESCRIPTION OF SYMBOLS 1... Compressor, 2... Four-way valve, 3... Outdoor heat exchanger, 5.6... Capillary tube, 7... Indoor heat exchanger, 8... Damping material, 9 ...Vibration isolation material, 10.1
．． 1. Sound insulation material.

Claims (1)

[Claims] 1. In a refrigeration system in which a compressor, a condenser, a capillary tube, and an evaporator are connected in sequence, a sticky vibration isolating material is placed on the capillary tube and the inlet pipe of the evaporator, and the outside surface of this vibration isolating material is covered. A refrigeration device characterized by being wrapped with a vibration damping material made of a sound insulating material.