JPH03244982A - Accumulator - Google Patents

Abstract

PURPOSE:To enable accurate decision of an amount of refrigerant by a method wherein a sight glass is mounted to the side of a cylinder part to contain a refrigerant. CONSTITUTION:Clear sight glass 20 made of pressure resisting and heat resisting glass is located to the side of a cylinder part 8 of an accumulator 7. The sight glass 20 is extended in parallel to the axis of the cylinder part 8 of the accumulator 7, namely vertically in a long manner. A mark 20a to indicate the upper limit value of an amount of a refrigerant 12 and a mark 20b to indicate the lower limit value thereof are formed in the vicinity of the sight glass 20. Further, a red boll float 14 is caused to float in the sight glass 20 so as to facilitate confirmation. In a use, by confirming whether or not the float 14 is present between the mark 20a to indicate the upper limit value end the mark 20b to indicate the lower limit value as the float 14 is watched through the sight glass 20, it can be easily decided whether or not an amount of the liquid refrigerant 12 is proper.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a refrigeration cycle in which a compressor circulates refrigerant through a condenser, evaporator, accumulator, etc., and particularly relates to an accumulator.

[Prior Art] As a conventional refrigeration cycle, a CCOT (Clutch Cycling Orifice Tube) type refrigeration cycle is shown in FIG.

This refrigeration cycle consists of a condenser 1, an orifice tube 2
, evaporator 3, filter 4, compressor 5
, a clutch 6, and an accumulator 7.

The compressor 5 is driven via a clutch 6, and a condenser 1 is connected to the discharge side of the compressor 5 via a pipe 13. A filter 4 is connected to the discharge side of the condenser 1 via a tube similar to the tube 13. An orifice tube 2 is connected to the discharge side of the filter 4 via a tube similar to the tube 13. An accumulator 7 is connected to the discharge side of the evaporator 3.

In this refrigeration cycle, the refrigerant is oxidized in the condenser 1, and the liquid refrigerant is filtered through the filter 4 and sent to the orifice tube 2. The liquid refrigerant is sent to the evaporator 3 through the orifice tube 2 to be converted into heated vapor, which is accumulated in the accumulator 7. The accumulated heating steam is transferred to the pipe body 13.
The air is sent to the compressor 5 through a pipe similar to the above.

Incidentally, the amount of refrigerant circulating in the refrigeration cycle is determined by detecting the heated vapor state of the refrigerant flowing out from the accumulator 7 to the compressor 5.

The temperature of the detected heated vapor of the refrigerant (for example, R-12) is, for example, 3°C, and the pressure of the refrigerant is 2.0 cg.
/ cd The temperature at which the degree of heating in G becomes zero is 0℃
Assuming this, the amount of liquid refrigerant 12 to be additionally sealed into the accumulator trough was determined after the refrigerant was sealed in the refrigeration cycle until the temperature reached 0°C.

[Problems to be Solved by the Inventionffi] However, it was not possible to confirm the actual amount of refrigerant in the accumulator.

Therefore, the technical problem of the present invention is to provide an accumulator that can accurately determine the amount of refrigerant.

[Means for Solving the Problems] According to the present invention, there is provided an accumulator having a cylindrical portion for receiving a refrigerant, characterized in that a sight glass through which the refrigerant can be viewed directly is provided on a side surface of the cylindrical portion. can get.

[Example 1] The following is a first example of an accumulator according to an example of the present invention.
This will be explained with reference to the figures.

Incidentally, the same parts as those of the accumulator 7 in FIG. 2 are given the same reference numerals, and the explanation thereof will be omitted.

Referring to FIG. 1, a transparent sight glass 20 made of pressure-resistant and heat-resistant glass is provided on the side surface of the cylindrical portion 8 of the accumulator 7. This sight glass 20 extends parallel to the axis of the cylindrical portion 8 of the accumulator 7, that is, extends vertically.

Near the sight glass 20, a mark 20a representing the upper limit of the amount of the refrigerant 12 and a mark 20b representing the lower limit are attached. Note that a red float 14 is floated inside the sight glass 20 for easy confirmation.

In use, the float 1 is inserted through the sight glass 20.
4 and check whether the float 14 is between the mark 20a indicating the upper limit value and the mark 20b indicating the lower limit value, it is easy to determine whether the amount of liquid refrigerant 2 is appropriate. can be determined.

[Effects of the Invention] As explained above, according to the accumulator of the present invention, since the sight glass is provided on the side of the cylindrical portion that receives the refrigerant, there is an effect that the amount of refrigerant can be accurately determined. .

[Brief explanation of drawings]

FIG. 1 is an external view of an accumulator according to an embodiment of the present invention;
FIG. 2 is a sectional view of a conventional accumulator, and FIG. 3 is a block diagram of a refrigeration cycle. In the diagram, 1... condenser, 2... orifice tube, 3...
・Evaporator, 4... Filter, 5... Compressor 6... Clutch, 7... Accumulator,
8... Cylinder part, 12... Liquid refrigerant, 13... Pipe body, 1
4...Float, 20...Sight glass. 471

Claims (1)

[Claims] (1) An accumulator having a cylindrical portion for receiving a refrigerant, characterized in that a sight glass is provided on a side surface of the cylindrical portion to allow direct viewing of the refrigerant.