JPH094943A - Air conditioning service valve - Google Patents

Abstract

PURPOSE: To improve the assembling operability and productivity of an air conditioning service valve mounted at the outdoor unit of a split type air conditioner. CONSTITUTION: A cylindrical body is connected to a mounting plate 10, stood, a joint for an outdoor tube is formed at the body sidewall, an indoor tube pipe is connected from the lower surface side of the plate 10 to the bottom opening of the body, a unit of the state that both service valves 20, 40 are aligned at an interval on the plate 10 is formed, and the plate 10 is screw- clamped with an outdoor unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning service valve mounted on an outdoor unit of a separate type air conditioner.

[0002]

2. Description of the Related Art A separate type air conditioner for forming a refrigerant circulation cycle between an outdoor unit accommodating an outdoor heat exchanger, a compressor, an accumulator, etc. and an indoor unit accommodating an indoor heat exchanger. In order to connect the indoor unit installed indoors and the outdoor unit installed outdoors at the site, a pair of air conditioning service valves of a gas side service valve and a liquid side service valve are attached to the outdoor unit. And, the air conditioning service valve is piped in one direction to the refrigerant circuit inside the outdoor unit,
It is generally assembled by fastening the legs of the main body to the outer wall of the outdoor unit with screws. Further, in an air conditioner called a multi-type air conditioner configured to connect a plurality of indoor units to one outdoor unit and performing an air conditioning operation of a plurality of rooms, a plurality of pairs of indoor units are connected in order to connect the pipes. The air conditioning service valve is installed in the outdoor unit.

[0003]

Such gas-side and liquid-side air conditioning service valves are individually installed in the outdoor unit by piping in one direction inside the outdoor unit, so that the assembly work is complicated and the productivity is low. It was low. Furthermore, in a multi-type air conditioner, such drawbacks become more prominent as the number of service valves installed increases, the number of screw tightening steps increases, the manufacturing cost increases, and a structure with better workability for assembly is desired. Was there.

An object of the present invention is to provide an air-conditioning service valve having a new structure to solve these problems. The gas-side and liquid-side air-conditioning service valves are unitized in advance and manufactured. Is installed in an outdoor unit to improve assembly workability and productivity, reduce manufacturing cost, and provide a useful air-conditioning service valve mounting structure especially for multi-type air conditioners. That is the purpose.

[0005]

In order to achieve the above object, the air conditioning service valve of the present invention has a tubular main body joined to a mounting plate to stand upright, and a joint for external piping is formed on the side wall of the main body. An in-machine piping pipe is connected to the bottom opening of the main body from the lower surface side of the mounting plate to form a unit in which both service valves are lined up on the mounting plate at intervals. Then, the mounting plate is attached to the outdoor unit by screwing. Further, in a multi-type air conditioner, this unit is applied to an indoor unit to be connected and used in plural. Hereinafter, the configuration of the present invention will be specifically described with reference to the embodiments of the drawings.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in the drawings, an air conditioning service valve of a gas side service valve (20) and a liquid side service valve (40) is integrally manufactured on a rectangular mounting plate (10). And, in the centers of both short sides of the mounting plate (10), semicircular notches (11), (12) for screw tightening.
Are formed.

A tubular main body (21) of the gas side service valve (20) is erected with its lower end joined to the mounting plate (10), and its bottom is opened to serve as an in-machine piping port. Body (2
1) A nipple (22) is joined to a side wall to form an external pipe joint, and the tip opening of the nipple (22) is plugged (2).
3) Seal the flare nut (24) with the nipple (2
It is fitted on 2). This joint for external piping is one in which the tip of the piping pipe is flared and flared at the tapered surface of the tip of the nipple (22) for pipe connection with the indoor unit. A nipple (25) is joined to the side wall of the main body (21) facing the joint for external piping to form a joint for gas charge, and similarly, the nipple (25) is sealed with a plug (26).
A flare nut (27) is fitted on the outside. And a connector (29) to which a predetermined in-machine piping pipe (28) is joined
Is screwed into the bottom opening of the main body (21) from the lower surface side of the mounting plate (10), and a valve shaft (30) having a bottomed hexagonal insertion hole (31) from the upper end is inserted into the main body (21). It is screwed and stored. This valve mechanism has a well-known configuration, and the gas side service valve (20) inserts a hexagonal wrench into the hexagonal insertion hole (31) to rotate the valve shaft (30) to move the valve shaft (30) back and forth in the axial direction. The refrigerant passage is opened and closed by.

A tubular body (41) of the liquid side service valve (40) spaced apart from the gas side service valve (20).
Is erected by being joined to the mounting plate (10) at the lower end. Then, a nipple (42) is joined to the side wall of the main body (41) to form an external piping joint, which is sealed with a plug (43) and a flare nut (44) is externally fitted to the nipple (42). . From the lower surface side of the mounting plate (10) to the main body (41)
A valve shaft (50) having a hexagonal insertion hole (51) formed by joining an in-machine piping pipe (48) to the bottom opening of the main body (4
1) It is screwed and stored in the liquid side service valve (4
Like the gas side service valve (20), 0) is configured to open and close by axially advancing and retracting the valve shaft (50).

As described above, this embodiment is formed as a unit in which the gas side service valve (20) and the liquid side service valve (40) are arranged on the mounting plate (10) with a space therebetween. . And notches (11), (12)
The mounting plate (10) is attached to a predetermined position on the outer wall of the outdoor unit by screwing with, and the in-machine piping pipes (28) and (48) are piped and assembled in the refrigerant circuit in the outdoor unit. Then, in a multi-type air conditioner connected to two indoor units, as shown in FIG. 5, two of these units are used and arranged in the longitudinal direction, and screws (13 ) To attach the mounting plate (10) to the outdoor unit,
Install two pairs of air conditioning service valves.

[0010]

According to the air conditioning service valve of the present invention, each body (21), (41) is joined to the mounting plate (10), and the gas side service valve (20) and the liquid side service valve (40) are integrated. Mounting unit (10)
The air-conditioning service valve can be assembled to the outdoor unit at one time by the screw tightening work, the number of screw tightening steps is reduced, and the assembling workability is excellent as compared with the conventional mounting means.
And, in the multi-type air conditioner, it is applied to the indoor unit to be connected and a plurality of these units are used, the productivity is greatly improved, and the manufacturing cost is reduced.
It is extremely useful for high capacity commercial air conditioners.

Further, both conventional service valves (20),
(40) is manufactured individually, whereas it is manufactured integrally with the mounting plate (10), so it is suitable for mass production, and because it is integrated, it is convenient to handle and easy to manage. Is.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 5 is an explanatory diagram showing a mounting state in a multi-type air conditioner.

[Explanation of symbols]

 10 Mounting plate 20 Gas side service valve 21 Main body 28 In-machine piping pipe 40 Liquid side service valve 41 Main body 48 In-machine piping pipe

Claims (2)

[Claims] 1. An air conditioning service valve for a gas side service valve (20) and a liquid side service valve (40) to be mounted on an outdoor unit of a separate type air conditioner, comprising: a tubular body (21), (41). It is joined to the mounting plate (10) and erected, and a joint for external piping is formed on the side walls of the main bodies (21) and (41), and the main body (2) is attached from the lower surface side of the mounting plate (10).
1), (41) at the bottom opening, the in-machine piping pipe (28),
(48) is connected and both service valves (20), (4
An air conditioning service valve in which units 0) are formed on the mounting plate (10) with a space therebetween and the mounting plate (10) is screwed to the outdoor unit. 2. A multi-type air conditioner in which one outdoor unit is connected to a plurality of indoor units, an air conditioning service valve using a plurality of units according to claim 1 applied to the connected indoor units.