ES2614743T3 - Compressor - Google Patents

Abstract

A compressor (1) comprising a cylinder (2) that provides pumping of the circulating fluid inside, a suction silencer (4) that allows the circulating fluid, whose acoustic energy is reduced, to circulate inside to reach the cylinder (2 ) without heating and prevent the noise that can be generated by the circulation fluid, a cylinder head (3) that interconnects the suction silencer (4) and the cylinder (2), which carries the circulated fluid sucked and pumped, a board (5) valve that allows the pumping and suction of the circulating fluid by forming a rigid and leak-proof connection between the cylinder (2) and the cylinder head (3), a suction valve plate (10) that allows the fluid suction inside the cylinder (2), an exhaust silencer (13) that allows the circulating fluid inside the cylinder (2) to be transferred into the refrigerant cycle with attenuated pressure and noise, and a plate (11) of exhaust valve that allows qu and the circulating fluid heated inside the cylinder (2) is discharged, a valve board (5) comprising an exhaust outlet (6) covered by the exhaust valve plate (11) that allows the circulating fluid heated leave the cylinder (2) and reach the exhaust silencer (13), a discharge outlet (7) that allows the fluid that leaves the exhaust outlet (6) to be taken to the exhaust silencer (13), characterized by that the valve board (5) further comprises a channel (8) that interconnects the exhaust outlet (6) and the discharge outlet (7), which reduces the heating of the cylinder head (3) resulting from the circulating fluid by helping that the fluid leaving the cylinder (2) quickly reaches the discharge outlet (7).

Description

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DESCRIPTION

Compressor

This invention is related to a compressor comprising a valve board, which is used in appliances, especially in refrigeration devices.

In the state of the art, in appliances, especially in hermetic compressors with pistons, which are used in refrigeration devices, the circulating fluid goes through the silencer and reaches the cylinder through the cylinder head. After the compression process, the gas that leaves the cylinder with greater pressure and temperature, passes again through the cylinder head reaching the exhaust outlet. Suction of the refrigerant inside the cylinder and after compression, discharge of the refrigerant that passes through the cylinder head, is achieved through the valve board. The geometries and positions of the ports on the valve board are determining parameters for the resulting losses during the suction and exhaust cycles. After the compression process, the high discharge rate, especially at the exhaust outlet, of the circulating fluid left by the cylinder entering the cylinder head, will result in an increase in exhaust leakage losses. In addition, the high temperature of the exhaust gas discharged to the cylinder results in the heating of the cylinder head and this in turn results in the heating of the circulating fluid that is sucked into the cylinder through the cylinder head. The inlet temperature of the circulating fluid sucked into the cylinder head directly affects the thermodynamic performance.

The part of the suction silencer that fits in the cylinder head is in the valve board. Even if the surfaces of the suction silencer that seat on the valve board are partially machined, there is also some temperature increase of these surfaces that seat on the valve board that has a higher temperature in this region. This event affects thermodynamic performance.

In the state of the art, in US Pat. No. US5328338 a compressor is described which comprises a valve board having a recess wider than the suction plate that is connected thereon.

In addition, the prior art document FR1330486 describes a compressor according to the preamble of claim 1.

The object of the present invention is to design a compressor used in appliances, especially in refrigeration devices, comprising a valve board, whose thermodynamic performance is improved by facilitating the flow of the fluids circulating in it.

The compressor designed to fulfill the object of the present invention is illustrated in the accompanying drawings, in which: Figure 1 - is the sectional view of a compressor.

Figure 2 is the perspective view of a valve board used in the prior art.

Figure 3 - is the perspective view of a valve board.

Figure 4 - is the view of a valve board from above.

Figure 5 - is the exploded view of a body, a suction silencer, a suction valve plate, an exhaust valve plate, a cylinder head and a valve board.

Figure 6 - is the perspective view of a channel.

The elements shown in the drawings are numbered as follows:

 one.

 Compressor

 2.

 Cylinder

 3.

 Butt

 Four.

 Suction silencer

 5.

 Valve table

 6.

 Exhaust outlet

 7.

 Discharge output

 8.

 Channel

 9.

 Muffler recess

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 10.

 Suction valve plate

 eleven.

 Exhaust Valve Plate

 12.

 Download channel

 13.

 Exhaust silencer

 14.

 Step

 fifteen.

 Engine

 16.

 Body

The compressor (1) used in appliances, especially in refrigeration devices, comprises a motor (15), a body (16) on which the motor components (15) are assembled, a cylinder (2) that provides fluid pumping inside, a suction silencer (4), preferably made of plastic that allows the circulation fluid, whose acoustic energy is reduced, circulate inside to reach the cylinder (2) without heating and prevent the noise that can be generated by the flow fluid circulation, a cylinder head (3) that interconnects the suction silencer (4) and the cylinder (2), which carries the circulating fluid sucked and pumped, a valve board (5) that allows the suction and pumping of the fluid in circulation by forming a nipple and leak-proof connection between the cylinder (2) and the cylinder head (3), a suction valve plate (10) that allows the suction of the fluid inside the cylinder (2), an exhaust silencer ( 13) to which the circulating fluid is carried Inside the cylinder (2) allowing it to be transferred into the refrigerant cycle with attenuated pressure and noise, a discharge channel (12) that interconnects the valve board (5) and the exhaust silencer (13), and a plate (11) of exhaust valve that allows the discharge of the circulating fluid in the cylinder (2).

The valve board (5) comprises an exhaust outlet (6) preferably with a curved shape, covered by the exhaust valve plate (11), which allows the heated circulating fluid leaving the cylinder (2) to reach the silencer Exhaust (13), a discharge outlet (7) preferably with a curved shape, which allows the fluid leaving the exhaust outlet (6) to be taken to the exhaust silencer (13), a channel (8) that interconnects the exhaust outlet (6) and the discharge outlet (7) that reduces the heating of the cylinder head (3) due to the circulating fluid by helping the fluid leaving the cylinder (2) to quickly reach the discharge outlet ( 7), and a recess (9) of silencer on which the suction silencer (4) sits.

In another embodiment of the present invention, the channel (8) comprises one or more steps (14) that form level differences at its base to reduce circulation losses, positioned according to shapes and sizes suitable for circulation.

In the embodiment of the present invention, the circulating fluid entering the compressor (1) and through the suction muffler (4) is sucked by the cylinder (2) onto the valve board (5) and pumped into the muffler. exhaust (13) and outside the compressor (1) from the exhaust silencer (13). The circulating fluid that passes to the valve board (5) from the cylinder (2) through the exhaust outlet (6) reaches the discharge outlet (7) via the channel (8) in a short time, leaves The valve board (5) through the discharge outlet (7), reaches the exhaust silencer (13) by means of the discharge channel (12). In this cycle, the circulation fluid that goes through the suction silencer (4), which enters the cylinder (2) with high speed and pressure and leaves the cylinder head (3) quickly in order to minimize losses, produces a effect that increases thermodynamic performance.

In another embodiment of the present invention, an elliptical discharge outlet (7) is used to reduce circulation losses.

In another embodiment of the present invention, a channel (8) is used which tilts from the exhaust outlet (6) to the discharge outlet (7) with an inclination angle (p), which prevents the circulating fluid leave the surface of the base in order to reduce pressure losses resulting from circulation. In the preferred embodiment, an inclination angle (p) of less than 30 ° is used in order to prevent the fluid from leaving the surface.

In even another embodiment of the present invention, the valve board (5) comprises a channel (8) having different inclinations before and after the step (14).

With the realization of the present invention, the circulating fluid that leaves the cylinder (2) with higher temperature, due to high pressure and speed, is allowed to leave the cylinder head (3) more quickly through the channel (8). Consequently, pressure losses due to high speed of the circulating fluid are avoided and the increase in cylinder head temperature (3) due to the circulating fluid is reduced. In this case, reducing the temperature of the suction gas while going over the cylinder head (4) provides a positive effect on thermodynamic performance. In addition, the suction silencer (4) that opens to the valve board (5) and the recess silencer (9) in the geometrical connection reduces the risk of circulating fluid being heated by the valve board and improves thermodynamic performance .

Claims (5)

5 10 fifteen twenty 25 1. A compressor (1) comprising a cylinder (2) that provides pumping of the circulating fluid inside, a suction silencer (4) that allows the circulating fluid, whose acoustic energy is reduced, circulates inside to reach to the cylinder (2) without heating and to prevent the noise that can be generated by the circulation fluid, a cylinder head (3) that interconnects the suction silencer (4) and the cylinder (2), which carries the circulating fluid sucked and pumped, a valve board (5) that allows the pumping and suction of the circulating fluid by forming a rigid and leak-proof connection between the cylinder (2) and the cylinder head (3), a valve plate (10) suction that allows the suction of the fluid inside the cylinder (2), an exhaust silencer (13) that allows the circulating fluid inside the cylinder (2) to be transferred into the refrigerant cycle with attenuated pressure and noise, and a plate (11) exhaust valve that allows fluid in circ Heated ulacion inside the cylinder (2) is discharged, a valve board (5) comprising an exhaust outlet (6) covered by the exhaust valve plate (11) that allows the circulating fluid heated to leave the cylinder ( 2) and reach the exhaust silencer (13), a discharge outlet (7) that allows the fluid leaving the exhaust outlet (6) to be taken to the exhaust silencer (13), characterized in that the board ( 5) The valve also comprises a channel (8) that interconnects the exhaust outlet (6) and the discharge outlet (7), which reduces the heating of the cylinder head (3) resulting from the circulating fluid by helping the fluid that let the cylinder (2) quickly reach the discharge outlet (7). 2. A compressor (1) according to claim 1, characterized by a valve board (5) comprising a channel (8) having one or more steps (14) at its base, which form level differences to reduce losses of circulation, positioned according to proper form and adequate sizes for circulation. 3. A compressor (1) according to claim 1 and 2, characterized by a valve board (5) comprising an elliptical shaped exhaust outlet (7) in order to reduce circulation losses. A compressor (1) according to any one of the preceding claims, characterized by a valve board (5) comprising a channel (8) that slopes from the exhaust outlet (6) to the discharge outlet (7) with in order to reduce pressure losses due to circulation and with an angle of inclination (p) that prevents the circulating fluid from leaving the base surface. 5. A compressor (1) according to claim 2 and 4, characterized by a valve board (5) comprising a channel (8) having variable inclinations before and after the step (14).