JPS5918278Y2 - Refrigeration equipment - Google Patents

Description

[Detailed explanation of the invention] This invention uses the high-temperature heat source of the refrigerant compressor discharge gas of the refrigerator as a heating heat source, a heating heat source for hot water supply, and a reheater heat source during defrosting, so the discharge gas can be used for external heat recovery. This invention relates to an improved structure of a refrigeration system that leads to a heat exchanger.

As shown in FIG. 1, a conventional discharge gas extraction device cuts a piping member 2 (hereinafter referred to as a discharge piping member) that communicates a compressor 1 and a condenser 3 in the middle, and installs a heat exchanger for heat recovery. 5 through an outgoing pipe 6A and a return pipe 6B of the pipe 6, and the return pipe 6B was connected to the inlet of the condenser 3.

Note that the broken line indicates the piping before the heat exchanger 5 for heat recovery is installed.

In most refrigerators, steel pipes are used for the discharge piping member 2 in view of workability and durability, and connections are made by brazing, but sometimes the brazing is incomplete. was common.

Furthermore, in order to reduce noise and vibration, the refrigerant compressor 1 is often equipped with anti-vibration springs in its legs to allow the refrigerant compressor to move freely, and the discharge piping member 2 is fixed to the movable refrigerant compressor 1. In order to provide communication between the condensers 3 and at the same time absorb the vibrations of the refrigerant compressor 1 and prevent them from being transmitted to the condenser 3, the discharge piping member 2 is cut in the middle and the heat for heat recovery is removed. When connecting the piping member 6 to the exchanger 5, deterioration of the steel material due to abnormal heating by the burner during bonding of the brazing material, hydrogen embrittlement due to hydrogen content, vibration change due to a change in resonance number due to a change in cross-sectional shape, etc. There were many accidents involving breakage at connections and refrigerant leaks.

In addition, in refrigeration equipment, a discharge muffler is often installed in the middle of the piping between the compressor 1 and the condenser 3, and the discharge pulsations of the refrigerant compressor 1 are introduced into the condenser 3 while being rectified. When piping members leading to a heat recovery heat exchanger, etc. are removed from upstream, abnormal noise may be generated due to contact vibration between the copper pipes and aluminum fins of the heat recovery heat exchanger, which usually consists of plate fin tubes, or contact may occur. Cracks often occur due to wear, and it is always necessary to remove piping members from downstream of the discharge muffler.

One or more discharge mufflers are installed depending on the discharge conditions of the refrigerant compressor, and the shapes, sizes, and installation positions vary widely.After the refrigeration equipment is installed, it is not possible to remove the piping members from downstream of the discharge muffler. It was difficult.

In order to eliminate the above-mentioned drawbacks, this invention provides a hot gas bypass connection port on the elbow flange member of the discharge gas receiving port provided at the top of the condenser, and has a structure in which a removable isolation member can be installed inside. Another connection port is provided in the condenser part.

An embodiment of this invention will be described below with reference to the drawings.

In FIG. 2, 1 to 3, 5, 6, 6 A, and 6 B are the same as those in FIG. 1, so their explanation will be omitted.

4 is an elbow flange member, and 9 is a discharge muffler that reduces discharge pulsation.

Fig. 3 shows a detailed cross-section of the elbow flange member 4, where 4a is the discharge piping member connection port, 4b is the part that communicates with the inside of the condenser or stores the isolation material 8, and 4C is the discharge gas extraction connection port. , 7 a and 7 b are two connection ports provided in the condenser 3, one of which 7 a is fixed with the elbow flange 4, and the other 7 b is connected with the return pipe 6B.

Next, the operation will be explained.

With the above configuration, the discharge gas discharged from the refrigerant compressor 1 is rectified via the discharge muffler 9 and then enters the elbow flange member 4, where the discharge gas enters the condenser 3 through the isolation member 8. The direction of the discharged gas is changed, and the discharged gas is guided to the heat recovery heat exchanger 5 by the outgoing pipe 6A via the discharge gas extraction connection port 4C.

The gas-liquid mixture, which is partially condensed after generating heat in the heat-recovery heat-light exchanger 5, is passed through the return pipe 6B, and is then introduced into the condensation side connection lower b located at the top of the condenser 3, and into the interior of the condenser 3. guided and completely condensed.

According to such a configuration, cracks in the piping member 6 can be prevented because the discharge piping member 2 does not require a process of cutting or brazing in the middle of the piping.

In addition, without changing the resonance frequency of the piping system during operation,
Since the discharged gas can be taken out to the heat exchanger 5 for heat recovery, not only noise and vibration are reduced, but also the discharged gas is taken out after passing through the discharge muffler 9, so the discharged gas is rectified and used for the heat exchanger 5 for heat recovery. Abnormal noise from the device 5 or contact wear between the fin tubes can be prevented.

Furthermore, since the discharged gas is taken out from the fixed member, the vibrations are absorbed and are not transmitted to devices other than the refrigerator.

Although the elbow flange member provided on the upper part of the condenser has been described above, a companion flange member may be used, or a circuit opening/closing member called an operating valve may be used with the same effect.

As mentioned above, in this invention, in the device that guides the discharged gas from the refrigeration equipment to the heat recovery heat exchanger installed outside,
Since the discharged gas is taken out from the elbow flange, which is the piping connection member at the top of the condenser, there is no need to cut, modify, or connect the piping that connects the compressor and condenser, and vibrations are eliminated. It is possible to prevent cracks and breakage of pipes while reducing noise.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a part of a conventional refrigeration system, FIG. 2 is a diagram showing a main part of an embodiment of this invention, and FIG. 3 is a sectional view of the elbow flange member of the one shown in FIG. In the figure, 1 is a refrigerant compressor, 2 is a discharge piping member, 3 is a condenser, 4 is an elbow flange, 4a is a discharge piping member connection port, 4b is an isolating material storage part, 4C is a discharge gas extraction connection port, 5 is a heat exchanger for heat recovery, 6 is piping, 7a and 7b are connection ports, and 8 is a separator. Note that the same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] The high temperature heat source of the discharged gas of the refrigerant compressor is guided to the outside,
In refrigeration equipment used as a heating heat source,
The condenser of the refrigeration system is provided with two connection ports, and one connection lower a has an opening 4a that connects or disconnects the refrigerant compressor and the condenser with a removable separator, and a refrigerant compressor and heat recovery port. A refrigeration system characterized in that elbow flanges each having an opening 4C connecting with a heat exchanger for heat recovery are fixed, and piping from the heat exchanger for heat recovery is connected to the other connecting lower b.