CN2371370Y

CN2371370Y - Three-cavity rotary displacement pump

Info

Publication number: CN2371370Y
Application number: CN 98251895
Authority: CN
Inventors: 张伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-25
Filing date: 1998-12-25
Publication date: 2000-03-29
Anticipated expiration: 2008-12-25

Abstract

The utility model relates to a three-cavity rotary displacement pump belonging to the field of a variable displacement pump of a rotary piston. The utility model comprises a hollow cylindrical cylinder, a piston, a rotary shaft, a cylinder end cover, a cylinder sliding blade, an air suction cover and an air exhaust cover. The utility model is characterized in that the piston is a positive triangular prism body provided with a central through hole; the piston is arranged in the cylinder, and the cylinder is divided into three working chambers which are mutually independent by the piston; the piston adopts a concentric working mode; when the piston rotates for one circle, each working chamber can finish working cycles for three times. The utility model has the advantages of large output volume and low working noise. The utility model can be suitable for being used as an oil pump or a middle-low pressure air pump of a refrigerator, an air conditioner, etc.

Description

The three-chamber rotating displacement pump

The utility model relates to a kind of three-chamber rotating displacement pump, belongs to the variable displacement pump field of rotary-piston.

At present, rotary volume pump also claims rotary compressor, at home, generally adopt in the outer air conditioner, it is little that it has a volume, in light weight, the advantage that component are few, but its cylinder of general rotary volume pump adopts hollow cylindrical, in cylinder, adorn a cylindrical piston, piston sleeve turns in the off-centre of eccentric shaft, when eccentric shaft drives piston when cylinder inner wall rolls, in every one week of rolling, finish the suction of a gas, compression, discharge process, can not give full play to the discharge capacity of volume of cylinder, simultaneously because piston is that eccentric rotary can produce bigger operational noise.

The purpose of this utility model is the deficiency that exists in the above-mentioned rotating displacement pump, for people provide a kind of three-chamber structure and the piston three-chamber rotating displacement pump of rotation with one heart.

Above-mentioned purpose of the present utility model is achieved in that

It is piston that a positive three prism that has central through bore is housed in the cylinder of hollow cylindrical, have on three to following groove in vertical isoperimetric distance on the cylinder inner wall, be placed with a cylinder slide plate in each groove, one or more springs are housed between slide plate and groove bottom, slide plate closely contacts with the side of piston under spring action, and along with being rotated in the groove of piston slided, separated by spaces in the cylinder is become three active chambers independently mutually, rotating shaft is through can drive the piston rotation in the through hole of piston, three active chambers are respectively finished once air-breathing when piston rotates 120 °, compression, exhaust cycle, when piston rotates a circle three active chambers respectively finish three times air-breathing, compression, exhaust cycle.

Advantage of the present utility model is:

1. adopt the three-chamber structure, its output quantity is 2.5 times of the general rotating displacement pumps of same volume of cylinder;

2. be concentric rotary work mode owing to piston, thereby operating noise is extremely low.

Be description of drawings below:

Fig. 1 is a central shaft sectional drawing of the present utility model;

Fig. 2 is a cross section view of the present utility model;

Fig. 3 is a upper end cap structural drawing of the present utility model;

Fig. 4 is a lower end cap structural drawing of the present utility model.

Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated:

Accompanying drawing provides a kind of embodiment of the present utility model, include hollow cylindrical cylinder [1], piston [2], rotating shaft [3], cylinder end cap [4] and [5], cylinder slide plate [6], suction and discharge lids [7] and [8], its characteristics are that piston [2] is a positive three prism that has central through bore, each incline all is the transition circle shape, piston [2] is contained in the cylinder [1], vertically isoperimetric is gone up groove [9] extremely down apart from having three on cylinder [1] inwall, outwards protrude at the position that cylinder [1] has a groove [9], a cylinder slide plate [6] is housed in every groove [9], between cylinder slide plate [6] and groove [9] bottom surface, a spring [10] is housed, cylinder slide plate [6] closely contacts with the sidewall of piston [2], the interior separated by spaces of cylinder [1] is become three active chambers independently mutually, on, following cylinder end cap [4] and [5] be separately fixed at cylinder [1] on, on the end opening, air-breathing lid [7] is buckled in outside the cylinder upper end cap [4], exhaust cap [8] is buckled in outside the cylinder lower end cap [5], on cylinder upper end cap [4], have three suction ports [11], each suction port [11] is corresponding with a cylinder slide plate [6], and be positioned at the right side of corresponding slide plate [6], on the lower end cap [5] of cylinder, have three pores [12], an one-way exhaust valve [13] is housed on each pore [12], the corresponding slide plate [10] of each pore [12], and be positioned at the left side of corresponding slide plate [10], have a gas supplementing opening [14] at air-breathing lid [7] top in addition and have a relief opening [20] in exhaust cap [8] side, and rotating shaft [3] is through on the through hole [15] at piston [2] center, one end is inserted in the inner groovy [16] at cylinder upper end cap [4] center, the other end passes in the rotor [18] that is through motor [17] behind the center hole of cylinder lower end cap [5] and exhaust cap [8] as motor rotary shaft, motor [17] rotation drives the rotation of piston [2] like this, three sides of piston [2] can be the planes as required in addition, can be the curved surface of concave or convex also, be the plane in the present embodiment.

Motor clockwise direction rotation during work, piston also will turn clockwise, along with gas in each active chamber of rotation begins to be compressed, outlet valve is opened the gas discharge when piston rotates to several angle, and air-breathing, the compression of this time of each active chamber, exhaust cycle finish when rotating 120 °, piston each active chamber that whenever rotates a circle is finished three air-breathing, compressions, exhaust cycle, in proper order back and forth.

Claims

1, a kind of three-chamber rotating displacement pump, include the hollow cylindrical cylinder, piston, rotating shaft, cylinder end cap, cylinder slide plate and suction, exhaust cap, it is characterized in that: piston is a positive three prism that has central through bore, each incline all is the transition circle shape, piston is contained among the cylinder, have on three to following groove in vertical isoperimetric distance on the cylinder inner wall, a cylinder slide plate is housed in every groove, between cylinder slide plate and groove bottom surface, one or more springs are housed, the cylinder slide plate contacts with piston side wall, on, following cylinder end cap be separately fixed at cylinder on, on the end opening, air-breathing lid is buckled in outside the cylinder upper end cap, exhaust cap is buckled in outside the cylinder lower end cap, on the cylinder upper end cap, have three suction ports, each suction port is corresponding with a cylinder slide plate, and be positioned at the right side of corresponding slide plate, on the lower end cap of cylinder, have three pores, an one-way exhaust valve is housed on each pore, the corresponding cylinder slide plate of each pore, and be positioned at the left side of corresponding slide plate, have a gas supplementing opening at air-breathing tops in addition, a relief opening is arranged on the exhaust cap side, and rotating shaft is through on the through hole at piston center, one end is inserted in the inner groovy at cylinder upper end cap center, and the other end passes the cylinder lower end cap and the exhaust cap center hole is connected with external motor or driving belt.

2, three-chamber rotating displacement pump according to claim 1, each side that it is characterized in that piston can be the plane, also can curved surface.