CN103104499A

CN103104499A - Refrigeration screw compressor suction end base with check valve

Info

Publication number: CN103104499A
Application number: CN201210456696XA
Authority: CN
Inventors: 林汝捷; 魏德强
Original assignee: FUJIAN SNOWMAN COMPRESSOR TECHNOLOGY Co Ltd
Current assignee: FUJIAN SNOWMAN COMPRESSOR TECHNOLOGY Co Ltd
Priority date: 2012-11-15
Filing date: 2012-11-15
Publication date: 2013-05-15

Abstract

The invention relates to an F25B refrigeration machine, a refrigeration device or system class in international patent classification (IPC) through searching, and particularly belongs to a refrigeration screw compressor suction end base with a check valve. According to the technical scheme adopted by the invention, the refrigeration screw compressor suction end base comprises a suction end body (1), and is characterized in that an end body sealing surface (2) is made on the suction end body (1), and a check valve (3) is arranged on the end body sealing surface (2). The refrigeration screw compressor suction end base with the check valve has the beneficial effects that the check valve in a compressor replaces an external pipeline check valve, and thus the back flow on a high pressure side and a low pressure side of the compressor is effectively prevented to ensure that suction pipelines in the design of the compressor unit are more simplified, connecting parts of external pipelines are reduced, and refrigerating fluid leakage points are reduced; and due to the adoption of the structure design of the flap check valve, the convenience is brought for checking and cleaning a filter of the compressor, and the suction resistance can be effectively reduced and the refrigerating capacity of the compressor is increased.

Description

A kind of refrigeration helical-lobe compressor suction end base with safety check

Technical field

The present invention relates to F25B refrigerator on International Classification of Patents (IPC) through retrieval, and chiller plant or system's classification especially belong to the refrigeration helical-lobe compressor suction end base with safety check.

Background technique

high-speed rotary by twin-screw during helical-lobe compressor work transfers compression refrigerant gas, and the compression of gas produces a large amount of heats, the type of cooling of helical-lobe compressor is mainly leaned on the screw rod of the cooling High Rotation Speed of lubricant oil and is reduced delivery temperature, after compressor shutdown because there are larger pressure reduction in helical-lobe compressor exhaust side and suction side, on high-tension side like this lubricant oil will be forced into suction side and even be pressed onto in suction line, the phenomenon that will cause oil to hit when compressor starts next time, this phenomenon is very large to compressor harm, for prevent this phenomenon usually externally pipeline safety check is installed, but effect is bad, and inconvenience is installed.

Summary of the invention

The object of the present invention is to provide a kind of refrigeration helical-lobe compressor suction end base with safety check, collaborate to reach effective prevention compressor high and low pressure side, and reduce the effect of SCREW COMPRESSOR parts and leakage point.

The technical solution used in the present invention is: it comprises suction end body (1), it is characterized in that: be shaped with end body sealing surface (2) on described suction end body (1), on end body sealing surface (2), safety check (3) be housed.

Beneficial effect of the present invention is: 1, the present invention adopts the built-in safety check of compressor to replace the exterior line safety check, has effectively stoped the compressor high and low pressure side to be collaborated.Suction line is simplified more, reduced the connected element of exterior line, reduce the refrigerant gas leakage point; 2, owing to adopting the flap valve structural design, the compressor filter is cleaned in convenient maintenance, can effectively reduce inhalation resistance and improve compressor refrigerating capacity.

Description of drawings

Fig. 1 is principle of the invention figure

Wherein: 1, suction end body 2, end body sealing surface 3, safety check 31, non-return flap 32, flap fixing pin 33, spring 34, valve clack sealing surface.

Embodiment

The invention will be further described below in conjunction with accompanying drawing:

Be illustrated in figure 1 as principle of the invention figure, the present invention comprises suction end body (1), it is characterized in that: be shaped with end body sealing surface (2) on described suction end body (1), on end body sealing surface (2), safety check (3) be housed.

Safety check described in the present invention (3) is to be connected with flap fixing pin (32), spring (33) respectively by non-return flap (31), and flap fixing pin (32) be connected with spring (33) form.Be shaped with valve clack sealing surface (34) on described non-return flap (31), and valve clack sealing surface (34) is flexibly connected with end body sealing surface (2).This design has reached between valve clack sealing surface (34) on non-return flap (31) and end face seal face (2) and need not gasket seal, directly adopts metal and metal can carry out plane sealing.

Claims

1. refrigeration helical-lobe compressor suction end base with safety check, it comprises suction end body (1), it is characterized in that: be shaped with end body sealing surface (2) on described suction end body (1), on end body sealing surface (2), safety check (3) be housed.

2. the refrigeration helical-lobe compressor suction end base with safety check according to claim 1, it is characterized in that: described safety check (3) is to be connected with flap fixing pin (32), spring (33) respectively by non-return flap (31), and flap fixing pin (32) be connected with spring (33) form; Be shaped with valve clack sealing surface (34) on described non-return flap (31), and valve clack sealing surface (34) is flexibly connected with end body sealing surface (2).