JPH05141814A - Reversible refrigerant drying device - Google Patents

Abstract

PURPOSE:To simplify a freezing cycle by a method wherein two chambers are provided in a longitudinal direction of a refrigerant drying device, one chamber is provided with a spring, a drying agent and a check valve and the other chamber is provided with a drying agent and a spring, respectively. CONSTITUTION:A structure of refrigerant drying device is constructed such that a body 1 is divided into two chambers in a longitudinal direction and a cartridge type drying agent 2 is pushed by a spring 3 in an opposite direction in each of the chambers. A check valve 4 is arranged at an opposite side of the spring 3 so as to restrict a flowing direction. Due to this fact, when the refrigerant flows from the left side toward the right side, the refrigerant can flow through the lower drying agent 2 and in turn when the refrigerant flow from the right side toward the left side, the refrigerant can pass through the upper drying agent 2. That is, the refrigerant can be flowed on the same piping system from both its normal side and its reverse side and thus the refrigerant drying device can be used without using any check valve or a branch pipe even in the case that the reversible freezing cycle is being carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a refrigerant dryer (dryer) in a refrigeration cycle of an air conditioner.

[0002]

2. Description of the Related Art Conventionally, a refrigerant dryer has a structure that can be used only in one direction, as shown in page 674 of Refrigeration Mechanical Engineering Handbook (1965, Asakura Shoten).

[0003]

The above-mentioned prior art is considered only when the fluid is flown in the forward direction and is not considered when it is flowed in the reverse direction.

An object of the present invention is to simplify the refrigeration cycle by using a refrigerant dryer which can be used even when the fluid is passed in the forward and reverse directions.

[0005]

To achieve the above object, the present invention divides the refrigerant dryer main body into two chambers in the longitudinal direction, and one chamber is provided with a spring, a desiccant, and a check valve (forward direction). Since the check valve (reverse direction), the desiccant, and the spring are provided in the other chamber, the refrigerant can be used regardless of whether the refrigerant flows forward or backward.

[0006]

The function of the check valve in the forward direction is defined as chamber A, and the position of the check valve in the reverse direction is defined as chamber B. When the refrigerant flows from the forward direction, the refrigerant flowing in the dryer flows into the chamber A, and passes through the spring, the desiccant, and the check valve in this order. At this time, since the check valve in the B chamber operates, the refrigerant does not flow in the B chamber. When the refrigerant flows from the opposite direction, the check valve in the chamber A operates, so that the refrigerant flows into the chamber B and passes through the spring, the desiccant, and the check valve in this order. As a result, the refrigerant can be used regardless of whether the refrigerant flows from the normal direction or the reverse direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of a refrigerant dryer according to the present invention. In this refrigerant dryer structure, the body 1 is divided into two chambers in the longitudinal direction (refrigerant flow direction), and the cartridge type desiccant 2 is pressed by a spring 3 in the opposite direction of each chamber. A check valve 4 is provided on the side opposite to the spring 3 to limit the flow direction. Therefore, when the refrigerant flows from left to right, it can pass through the lower desiccant, and when it flows from right to left, it can pass through the upper desiccant. That is, the refrigerant can flow from either the forward or reverse side on the same piping system.

FIG. 2 shows an example of a refrigeration cycle using a conventional refrigerant dryer. Since the refrigerant flow direction of the refrigerant dryer 10 is determined, it is necessary to use the check valve 4 to make the refrigerant flow direction the same during cooling and heating.

FIG. 3 shows an example of a refrigeration cycle using the refrigerant dryer of the present invention. Since the refrigerant dryer does not specify the flow direction, it can be seen that the refrigeration cycle is simplified as compared with FIG.

FIG. 4 shows another example of the refrigerant dryer according to the present invention. The body 1 is divided into two chambers in the longitudinal direction, the desiccant 2 is provided in one chamber, and only the check valve (reverse direction) is provided in the other chamber. In this example, when the refrigerant flows from left to right, it passes through the lower desiccant 2, and when it flows from right to left, it passes through the upper chamber (without desiccant). Even with this structure, the refrigerant can flow from either the forward or reverse side on the same piping system.

[0011]

According to the present invention, since the refrigerant can flow in the forward and reverse directions, it is possible to use the refrigerant dryer without using the check valve and the branch pipe even during the reversible refrigeration cycle. It can be simplified.

[Brief description of drawings]

FIG. 1 is a sectional view of a refrigerant dryer according to the present invention.

FIG. 2 is a system diagram of a refrigeration cycle using a conventional refrigerant dryer.

FIG. 3 is a system diagram of a refrigeration cycle using the refrigerant dryer of the present invention.

FIG. 4 is a sectional view of a refrigerant dryer according to the present invention.

[Explanation of symbols]

1 ... Body, 2 ... Desiccant, 3 ... Spring, 4 ... Check valve.

 ─────────────────────────────────────────────────── (72) Inventor Masanori Uekura 390 Muramatsu, Shimizu City, Shizuoka Prefecture, Hitachi, Ltd. Shimizu Plant (72) Inventor Shuichi Nishida 390, Muramatsu, Shimizu City, Shizuoka Prefecture, Hitachi Ltd. Shimizu Plant, Ltd.

Claims (1)

[Claims] 1. A refrigerant dryer, which is an auxiliary device of a refrigeration cycle of an air conditioner, is provided with two chambers in the longitudinal direction of the refrigerant dryer, and one chamber is provided with a spring, a desiccant, and a check valve. ,
A reversible refrigerant dryer characterized in that a check valve, a desiccant, and a spring are installed in another room.