WO2017191228A1 - A hermetic compressor with increased performance - Google Patents
A hermetic compressor with increased performance Download PDFInfo
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- WO2017191228A1 WO2017191228A1 PCT/EP2017/060596 EP2017060596W WO2017191228A1 WO 2017191228 A1 WO2017191228 A1 WO 2017191228A1 EP 2017060596 W EP2017060596 W EP 2017060596W WO 2017191228 A1 WO2017191228 A1 WO 2017191228A1
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- WIPO (PCT)
- Prior art keywords
- valve
- exhaust
- cylinder head
- cylinder
- disposed
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1085—Valves; Arrangement of valves having means for limiting the opening height
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1066—Valve plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/125—Cylinder heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
Definitions
- hermetic compressors In hermetic compressors, a significant part of the losses in the course of transmission of the refrigerant gas to the refrigeration cycle occurs when the refrigerant gas is compressed in the cylinder and transmitted through the opened exhaust valve to the exhaust volume of the cylinder head.
- the refrigerant gas In a state of the art hermetic compressor, in the compressing movement of the piston in the cylinder, the refrigerant gas passes through the exhaust pass port on the valve table and fills into the exhaust chamber in the cylinder head and is sent therefrom to the refrigeration cycle.
- the opening movement of the exhaust valve is limited by means of a stopper on the valve table.
- the exhaust valve opens to the extent permitted by the stopper and thus, the desired amount of refrigerant gas pressure is provided in the exhaust chamber.
- Circulation of the refrigerant at high temperature and pressure in the exhaust chamber causes the temperature of the cylinder head to excessively rise. Heat transfer occurs from the high temperature cylinder head to the refrigerant gas circulating through the suction plenum, the cylinder block and the compressor, increasing the temperature of the said regions in an undesired manner, and adversely affecting the performance of the compressor.
- a valve unit used in a hermetic compressor is disclosed.
- the movement of the exhaust valve is restricted by means of a stopper mounted on the valve table.
- the aim of the present invention is the realization of a compressor the performance of which is improved by preventing the temperature of the refrigerant that is pumped into the refrigeration cycle from increasing in the exhaust region.
- the refrigerant sucked from the refrigeration cycle into the cylinder and pumped from the cylinder into the refrigeration cycle is guided by means of a cylinder head comprising suction and exhaust chambers therein and of a valve table.
- the valve table comprises thereon suction (inlet) and exhaust (outlet) ports that enable the refrigerant to enter and exit, and an exhaust pass port connected to an exhaust muffler.
- the compressor of the present invention comprises a clamping extension that is produced as a single piece with the cylinder head and that enables the exhaust valve to be fastened by clamping the same between the valve table and the cylinder head without the need for any fastening element such as rivet, etc.
- the cylinder head also comprises an inclined rib and a restriction surface that is disposed at the end of the rib and that restricts the movement of the exhaust valve so as to allow the exhaust valve to open to a certain extent, thus eliminating the need for a separate "stopper" member to restrict the movement of the exhaust valve.
- the valve table of the compressor of the present invention comprises a flow guiding recess that extends between the outlet port and the exhaust pass port and that enables the refrigerant pumped from the outlet port into the exhaust chamber to be guided quickly to the exhaust pass port and thus reducing the temperature of the cylinder head, and a bearing recess that is bored starting from the outlet port in the form of the exhaust valve and that enables the exhaust valve to be borne as partially embedded in the valve table.
- Figure 1 - is a cross-sectional view of a compressor.
- Figure 2 - is the schematic view of a valve table and a cylinder head in separate form.
- Figure 3 – is the perspective view of a cylinder head.
- Figure 4 – is the perspective view of an exhaust valve and a cylinder head.
- Figure 5 - is the perspective view of a valve table .
- Figure 6 - is the perspective view of an exhaust valve and a valve table.
- the hermetic compressor (1) suitable for use for circulation of a refrigerant fluid in cooling devices, for example in refrigerators comprises a casing (2); a cylinder (3) that is disposed in the casing (2) and that enables the refrigerant to be sucked and pumped; a piston (4) that is operated in the cylinder (3); a cylinder head (5) that enables the refrigerant sucked and pumped into the cylinder (3) with the movement of the piston (4) to be guided; a valve table (6) that is disposed between the cylinder (3) and the cylinder head (5); an exhaust chamber (7) that is disposed in the cylinder head (5) and wherein the refrigerant fluid pumped by the exhaust (pumping) movement of the piston (4) is accumulated; an inlet port (8) that is arranged on the valve table (6) and that enables the refrigerant to enter the cylinder (3) during the suction movement of the piston (4); an outlet port (9) that is arranged on the valve table (6) and that enables the refrigerant to
- the cylinder head (5) disposed on the compressor (1) of the present invention comprises a clamping extension (14) that is produced in the same mold with the cylinder head (5) as a single piece and that provides the exhaust valve (11) to be clamped from one end thereof between the valve table (6) and the cylinder head (5), and a restriction surface (15) that is disposed oppositely to the part of the exhaust valve (11) opening/closing the outlet port (9) and that restricts the movement of the opening/closing part of the exhaust valve (11), thus allowing the same to open to a certain extent ( Figure 2).
- the clamping extension (14) fastens the exhaust valve (11) by clamping the same from one end between the valve table (6) and the cylinder head (5) so as to open and close on the outlet port (9).
- the restriction surface (15) is arranged on the part of the cylinder head (5) opposite to the opening and closing exhaust valve (11), and the exhaust valve (11) hits the restriction surface (15) when the exhaust valve (11) opens during the compression process in the cylinder (3).
- the restriction surface (15) restricts the movement of the exhaust valve (11) and provides the adjustment of the pressure of the refrigerant gas delivered from the outlet port (9) to the exhaust pass port (13) and partly accumulated in the exhaust chamber (7).
- the cylinder head (5) comprises a rib (16) that is produced in the same mold with the cylinder head (5), the clamping extension (14) and the restriction surface (15) as a single piece so as to strengthen the construction and increase the mechanical strength of the cylinder head (5) and to prevent excessive heating by dissipating the heat, the rib (16) extending from the clamping extension (14) along the exhaust valve (11) toward the restriction surface (15) so as to move away from the exhaust valve (11) in an inclined manner into the exhaust chamber (7) ( Figure 2, Figure 3).
- the inclined configuration of the rib (16) forms a gap between the valve table (6) and the restriction surface (15), wherein the exhaust valve (11) moves.
- the cylinder head (5) comprises one or more than one cut-out (17) that is bored in the vicinity and/or the center of the restriction surface (15) and that enables the contact area of the restriction surface (15) whereon the exhaust valve (11) hits in each cycle of the piston (4) to be reduced ( Figure 2, Figure 3, Figure 4).
- the exhaust valve (11) opens and hits the contact area of the restriction surface (15) except for the cut-outs (17).
- the exhaust valve (11) easily separates from the restriction surface (15) without sticking thereto since the contact area of the restriction surface (15) is decreased and hence the adhesion force imparted by the oil inside the casing (2) is attenuated.
- the exhaust valve (11) timely closes the outlet port (9) and prevents any exhaust gas leakage. The refrigerant pumped into the exhaust chamber (7) is not sucked again into the cylinder (3) during the suction movement.
- the valve table (6) comprises a flow guiding recess (18) that is disposed on the surface of the valve table (6) facing the exhaust chamber (7), that extends between the outlet port (9) and the exhaust pass port (13), and that enables the refrigerant pumped from the outlet port (9) into the exhaust chamber (7) to be guided to the exhaust pass port (13) ( Figure 2, Figure 5, Figure 6).
- the exhaust valve (11) opens the outlet port (9) and enables the refrigerant to pass into the exhaust chamber (7) in the cylinder head (5).
- the flow guiding recess (18) that is bored by machining the surface of the valve table (6) (or by shaping in the mold) and that extends between the outlet port (9) and the exhaust pass port (13) is disposed on the surface of the valve table (6) that is joined with the cylinder head (5).
- the exhaust valve (11) opens the outlet port (9)
- the flow guiding recess (18) enables a significant part of the refrigerant to be directly guided to the exhaust pass port (13) without circulating in the exhaust chamber (7).
- the refrigerant is then transmitted from the exhaust pass port (13) through a channel to the exhaust muffler (12) and the refrigeration cycle.
- the valve table (6) comprises a bearing recess (19) that is disposed on the surface of the valve table (6) facing the exhaust chamber (7), that is bored from the outlet port (9) onward along the exhaust valve (11) in the form of the exhaust valve (11) and that enables the exhaust valve (11) to be borne as partially embedded in the valve table (6) so as to open and close on the outlet port (9) perpendicularly to the plane of the valve table (6) ( Figure 2, Figure 5).
- the clamping extension (14) applies pressure on the section of the exhaust valve (11) seated on the bearing recess (19) and enables the exhaust valve (11) to be fastened to the valve table (6).
- the need for riveting to fasten the exhaust valve (11) to the valve table (6) as in the state of the art embodiments is eliminated.
- the use of the component known as the "exhaust valve stopper”, that is used to restrict the movement of the exhaust valve (11) in the state of the art embodiments is eliminated, thus the number of components is decreased and the ease of production is provided.
- the flow guiding recess (18) disposed on the valve table (6) enables the pumped refrigerant gas to be directly guided to the exhaust pass port (13) after passing through the outlet port (9), thus preventing the exhaust chamber (7) and hence the cylinder head (5) from excessively heating up.
- the heat transfer from the cylinder head (5) to the valve table (6) and hence to the cylinder (3) block and the body of the compressor (1) is decreased.
- the temperature of the cylinder (3) is reduced, the mass flow rate of the refrigerant taken into the cylinder (3) is increased, the refrigeration coefficient of performance (COP) is increased, and hence the refrigeration performance is improved.
- COP refrigeration coefficient of performance
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The present invention relates to a hermetic compressor (1) suitable for use for circulation of a refrigerant fluid in a refrigeration cycle in cooling devices, for example in refrigerators, comprising a casing (2); a cylinder (3) that is disposed in the casing (2) and that enables the refrigerant to be sucked and pumped; a piston (4) that is operated in the cylinder (3); a cylinder head (5) that enables the refrigerant sucked and pumped into the cylinder (3) with the movement of the piston (4) to be guided; a valve table (6) that is disposed between the cylinder (3) and the cylinder head (5); an exhaust chamber (7) that is disposed in the cylinder head (5) and wherein the refrigerant fluid pumped by the pumping movement of the piston (4) is accumulated; an exhaust muffler (12), and an exhaust pass port (13) that is disposed on the valve table (6).
Description
In hermetic compressors, a significant part of the losses in the course of transmission of the refrigerant gas to the refrigeration cycle occurs when the refrigerant gas is compressed in the cylinder and transmitted through the opened exhaust valve to the exhaust volume of the cylinder head. In a state of the art hermetic compressor, in the compressing movement of the piston in the cylinder, the refrigerant gas passes through the exhaust pass port on the valve table and fills into the exhaust chamber in the cylinder head and is sent therefrom to the refrigeration cycle. The opening movement of the exhaust valve is limited by means of a stopper on the valve table. During the compression of the gas in the cylinder, the exhaust valve opens to the extent permitted by the stopper and thus, the desired amount of refrigerant gas pressure is provided in the exhaust chamber. Circulation of the refrigerant at high temperature and pressure in the exhaust chamber causes the temperature of the cylinder head to excessively rise. Heat transfer occurs from the high temperature cylinder head to the refrigerant gas circulating through the suction plenum, the cylinder block and the compressor, increasing the temperature of the said regions in an undesired manner, and adversely affecting the performance of the compressor.
In the United States Patent No. US5209260 and the International Patent Application No. WO2015011906, a valve unit used in a hermetic compressor is disclosed. The movement of the exhaust valve is restricted by means of a stopper mounted on the valve table.
In the United States Patent No. US6641374, a cylinder head that is used in a hermetic compressor and composed of two sections is disclosed.
In the International Patent Application No. WO2012166051, a valve table with improved thermal insulation, that is disposed in a compressor is disclosed.
The aim of the present invention is the realization of a compressor the performance of which is improved by preventing the temperature of the refrigerant that is pumped into the refrigeration cycle from increasing in the exhaust region.
The compressor realized in order to attain the aim of the present invention is explicated in the claims.
In the hermetic compressor, the refrigerant sucked from the refrigeration cycle into the cylinder and pumped from the cylinder into the refrigeration cycle is guided by means of a cylinder head comprising suction and exhaust chambers therein and of a valve table. The valve table comprises thereon suction (inlet) and exhaust (outlet) ports that enable the refrigerant to enter and exit, and an exhaust pass port connected to an exhaust muffler. The compressor of the present invention comprises a clamping extension that is produced as a single piece with the cylinder head and that enables the exhaust valve to be fastened by clamping the same between the valve table and the cylinder head without the need for any fastening element such as rivet, etc. The cylinder head also comprises an inclined rib and a restriction surface that is disposed at the end of the rib and that restricts the movement of the exhaust valve so as to allow the exhaust valve to open to a certain extent, thus eliminating the need for a separate "stopper" member to restrict the movement of the exhaust valve.
The valve table of the compressor of the present invention comprises a flow guiding recess that extends between the outlet port and the exhaust pass port and that enables the refrigerant pumped from the outlet port into the exhaust chamber to be guided quickly to the exhaust pass port and thus reducing the temperature of the cylinder head, and a bearing recess that is bored starting from the outlet port in the form of the exhaust valve and that enables the exhaust valve to be borne as partially embedded in the valve table.
The compressor realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
Figure 1 - is a cross-sectional view of a compressor.
Figure 2 - is the schematic view of a valve table and a cylinder head in separate form.
Figure 3 – is the perspective view of a cylinder head.
Figure 4 – is the perspective view of an exhaust valve and a cylinder head.
Figure 5 - is the perspective view of a valve table .
Figure 6 - is the perspective view of an exhaust valve and a valve table.
The elements illustrated in the figures are numbered as follows:
1. Compressor
2. Casing
3. Cylinder
4. Piston
5. Cylinder head
6. Valve table
7. Exhaust chamber
8. Inlet port
9. Outlet port
10 Suction valve
11 Exhaust valve
12. Exhaust muffler
13. Exhaust pass port
14. Clamping extension
15. Restriction surface
16. Rib
17. Cut-out
18. Flow guiding recess
19. Bearing recess
The hermetic compressor (1) suitable for use for circulation of a refrigerant fluid in cooling devices, for example in refrigerators, comprises a casing (2); a cylinder (3) that is disposed in the casing (2) and that enables the refrigerant to be sucked and pumped; a piston (4) that is operated in the cylinder (3); a cylinder head (5) that enables the refrigerant sucked and pumped into the cylinder (3) with the movement of the piston (4) to be guided; a valve table (6) that is disposed between the cylinder (3) and the cylinder head (5); an exhaust chamber (7) that is disposed in the cylinder head (5) and wherein the refrigerant fluid pumped by the exhaust (pumping) movement of the piston (4) is accumulated; an inlet port (8) that is arranged on the valve table (6) and that enables the refrigerant to enter the cylinder (3) during the suction movement of the piston (4); an outlet port (9) that is arranged on the valve table (6) and that enables the refrigerant to be discharged from the cylinder (3) during the pumping movement of the piston (4); a suction valve (10) that is disposed on the valve table (6) and that opens and closes the inlet port (8); an exhaust valve (11) that is disposed on the valve table (6) and that opens and closes the outlet port (9); an exhaust muffler (12) that has a hollow, closed volume and that provides the attenuation of the noise generated during the pumping of the refrigerant, and an exhaust pass port (13) that is disposed on the valve table (6) and that enables the refrigerant to be delivered to the exhaust muffler through a channel (not shown in the figures) and to be added therefrom to the refrigeration cycle.
The cylinder head (5) disposed on the compressor (1) of the present invention comprises a clamping extension (14) that is produced in the same mold with the cylinder head (5) as a single piece and that provides the exhaust valve (11) to be clamped from one end thereof between the valve table (6) and the cylinder head (5), and a restriction surface (15) that is disposed oppositely to the part of the exhaust valve (11) opening/closing the outlet port (9) and that restricts the movement of the opening/closing part of the exhaust valve (11), thus allowing the same to open to a certain extent (Figure 2).
When the cylinder head (5) is fastened to the cylinder block (3) together with the valve table (6) by means of bolts, the clamping extension (14) fastens the exhaust valve (11) by clamping the same from one end between the valve table (6) and the cylinder head (5) so as to open and close on the outlet port (9). The restriction surface (15) is arranged on the part of the cylinder head (5) opposite to the opening and closing exhaust valve (11), and the exhaust valve (11) hits the restriction surface (15) when the exhaust valve (11) opens during the compression process in the cylinder (3). The restriction surface (15) restricts the movement of the exhaust valve (11) and provides the adjustment of the pressure of the refrigerant gas delivered from the outlet port (9) to the exhaust pass port (13) and partly accumulated in the exhaust chamber (7).
In another embodiment of the present invention, the cylinder head (5) comprises a rib (16) that is produced in the same mold with the cylinder head (5), the clamping extension (14) and the restriction surface (15) as a single piece so as to strengthen the construction and increase the mechanical strength of the cylinder head (5) and to prevent excessive heating by dissipating the heat, the rib (16) extending from the clamping extension (14) along the exhaust valve (11) toward the restriction surface (15) so as to move away from the exhaust valve (11) in an inclined manner into the exhaust chamber (7) (Figure 2, Figure 3). The inclined configuration of the rib (16) forms a gap between the valve table (6) and the restriction surface (15), wherein the exhaust valve (11) moves.
In another embodiment of the present invention, the cylinder head (5) comprises one or more than one cut-out (17) that is bored in the vicinity and/or the center of the restriction surface (15) and that enables the contact area of the restriction surface (15) whereon the exhaust valve (11) hits in each cycle of the piston (4) to be reduced (Figure 2, Figure 3, Figure 4).
When the piston (4) performs the compressing process in the cylinder (3), the exhaust valve (11) opens and hits the contact area of the restriction surface (15) except for the cut-outs (17). When the piston (4) performs the suction movement in the cylinder (3), the exhaust valve (11) easily separates from the restriction surface (15) without sticking thereto since the contact area of the restriction surface (15) is decreased and hence the adhesion force imparted by the oil inside the casing (2) is attenuated. Thus, the exhaust valve (11) timely closes the outlet port (9) and prevents any exhaust gas leakage. The refrigerant pumped into the exhaust chamber (7) is not sucked again into the cylinder (3) during the suction movement.
In an embodiment of the present invention, the valve table (6) comprises a flow guiding recess (18) that is disposed on the surface of the valve table (6) facing the exhaust chamber (7), that extends between the outlet port (9) and the exhaust pass port (13), and that enables the refrigerant pumped from the outlet port (9) into the exhaust chamber (7) to be guided to the exhaust pass port (13) (Figure 2, Figure 5, Figure 6).
When the piston (4) performs the compression movement in the cylinder (3), the exhaust valve (11) opens the outlet port (9) and enables the refrigerant to pass into the exhaust chamber (7) in the cylinder head (5). The flow guiding recess (18) that is bored by machining the surface of the valve table (6) (or by shaping in the mold) and that extends between the outlet port (9) and the exhaust pass port (13) is disposed on the surface of the valve table (6) that is joined with the cylinder head (5). As the exhaust valve (11) opens the outlet port (9), the flow guiding recess (18) enables a significant part of the refrigerant to be directly guided to the exhaust pass port (13) without circulating in the exhaust chamber (7). The refrigerant is then transmitted from the exhaust pass port (13) through a channel to the exhaust muffler (12) and the refrigeration cycle.
In another embodiment of the present invention, the valve table (6) comprises a bearing recess (19) that is disposed on the surface of the valve table (6) facing the exhaust chamber (7), that is bored from the outlet port (9) onward along the exhaust valve (11) in the form of the exhaust valve (11) and that enables the exhaust valve (11) to be borne as partially embedded in the valve table (6) so as to open and close on the outlet port (9) perpendicularly to the plane of the valve table (6) (Figure 2, Figure 5). The clamping extension (14) applies pressure on the section of the exhaust valve (11) seated on the bearing recess (19) and enables the exhaust valve (11) to be fastened to the valve table (6).
In the compressor (1) of the present invention, the need for riveting to fasten the exhaust valve (11) to the valve table (6) as in the state of the art embodiments is eliminated. Moreover, the use of the component known as the "exhaust valve stopper", that is used to restrict the movement of the exhaust valve (11) in the state of the art embodiments, is eliminated, thus the number of components is decreased and the ease of production is provided. The flow guiding recess (18) disposed on the valve table (6) enables the pumped refrigerant gas to be directly guided to the exhaust pass port (13) after passing through the outlet port (9), thus preventing the exhaust chamber (7) and hence the cylinder head (5) from excessively heating up. The heat transfer from the cylinder head (5) to the valve table (6) and hence to the cylinder (3) block and the body of the compressor (1) is decreased. The temperature of the cylinder (3) is reduced, the mass flow rate of the refrigerant taken into the cylinder (3) is increased, the refrigeration coefficient of performance (COP) is increased, and hence the refrigeration performance is improved.
Claims (6)
- A hermetic compressor (1) suitable for use in cooling devices, comprising a casing (2); a cylinder (3) that is disposed in the casing (2) and that enables the refrigerant to be sucked and pumped; a piston (4) that is operated in the cylinder (3); a cylinder head (5) that enables the refrigerant sucked and pumped into the cylinder (3) to be guided; a valve table (6) that is disposed between the cylinder (3) and the cylinder head (5); an exhaust chamber (7) that is disposed in the cylinder head (5) and wherein the refrigerant fluid pumped by the pumping movement of the piston (4) is accumulated; an inlet port (8) that is arranged on the valve table (6) and that enables the refrigerant to enter the cylinder (3) during the suction movement of the piston (4); an outlet port (9) that is arranged on the valve table (6) and that enables the refrigerant to be discharged from the cylinder (3) during the pumping movement of the piston (4); a suction valve (10) that is disposed on the valve table (6) and that opens and closes the inlet port (8); an exhaust valve (11) that is disposed on the valve table (6) and that opens and closes the outlet port (9); an exhaust muffler (12), and an exhaust pass port (13) that is disposed on the valve table (6) and that enables the refrigerant to be delivered to the exhaust muffler (12), characterized by- a clamping extension (14) that is produced with the cylinder head (5) as a single piece and that enables the exhaust valve (11) to be fastened by clamping the same from one end between the valve table (6) and the cylinder head (5), and- the cylinder head (5) comprising a restriction surface (15) that is disposed opposite to the part of the exhaust valve (11) opening/closing the outlet port (9) and that allows the exhaust valve (11) to open to a certain extent.
- A compressor (1) as in Claim 1, characterized by the cylinder head (5) that comprises a rib (16) that is produced as a single piece with the cylinder head (5), the clamping extension (14) and the restriction surface (15) and that extends from the clamping extension (14) along the exhaust valve (11) toward the restriction surface (15) so as to move away from the exhaust valve (11) in an inclined manner into the exhaust chamber (7).
- A compressor (1) as in Claim 1 or 2, characterized by the cylinder head (5) that comprises one or more than one cut-out (17) that is bored in the vicinity of and/or the center of the restriction surface (15) and that enables the contact area of the restriction surface (15) whereon the exhaust valve (11) hits to be reduced.
- A compressor (1) as in Claim 1 or 2, characterized by the valve table (6) that comprises a flow guiding recess (18) that is disposed on the surface of the valve table (6) facing the exhaust chamber (7), that extends between the outlet port (9) and the exhaust pass port (13), and that enables the refrigerant pumped from the outlet port (9) into the exhaust chamber (7) to be guided to the exhaust pass port (13).
- A compressor (1) as in Claim 1 or 2, characterized by the valve table (6) that comprises a bearing recess (19) that is disposed on the surface of the valve table (6) facing the exhaust chamber (7), that is bored from the outlet port (9) onward in the form of the exhaust valve (11) and that enables the exhaust valve (11) to be borne as partially embedded in the valve table (6).
- A compressor (1) as in Claim 5, characterized by the cylinder head (5) that comprises the clamping extension (14) that applies pressure on the section of the exhaust valve (11) seated on the bearing recess (19) so as to enable the exhaust valve (11) to be fastened to the valve table (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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TRA2016/05905 | 2016-05-05 | ||
TR201605905 | 2016-05-05 |
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WO2017191228A1 true WO2017191228A1 (en) | 2017-11-09 |
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PCT/EP2017/060596 WO2017191228A1 (en) | 2016-05-05 | 2017-05-04 | A hermetic compressor with increased performance |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114930022A (en) * | 2019-12-19 | 2022-08-19 | 安徽美芝制冷设备有限公司 | Hermetically sealed refrigerant compressor |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4949982A (en) * | 1988-06-13 | 1990-08-21 | Copeland Corporation | Compressor valve assembly |
US5209260A (en) | 1991-01-31 | 1993-05-11 | Samsung Electronics Co., Ltd. | Valve unit for hermetic reciprocating type compressor |
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WO2012166051A1 (en) | 2011-06-01 | 2012-12-06 | Panasonic Corporation | A valve plate for a compressor |
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2017
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US20030194337A1 (en) * | 2002-04-10 | 2003-10-16 | Samsung Gwangju Electronics Co., Ltd. | Cylinder assembly of hermetic compressor |
US20090214367A1 (en) * | 2005-04-12 | 2009-08-27 | Acc Austria Gmbh | Refrigerant Compressor |
WO2012166051A1 (en) | 2011-06-01 | 2012-12-06 | Panasonic Corporation | A valve plate for a compressor |
WO2015011906A1 (en) | 2013-07-22 | 2015-01-29 | パナソニックIpマネジメント株式会社 | Sealed compressor and refrigeration device |
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CN114930022A (en) * | 2019-12-19 | 2022-08-19 | 安徽美芝制冷设备有限公司 | Hermetically sealed refrigerant compressor |
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