EP4098171A2 - Household appliance with a compressor containing a reed valve - Google Patents

Household appliance with a compressor containing a reed valve Download PDF

Info

Publication number
EP4098171A2
EP4098171A2 EP22168862.5A EP22168862A EP4098171A2 EP 4098171 A2 EP4098171 A2 EP 4098171A2 EP 22168862 A EP22168862 A EP 22168862A EP 4098171 A2 EP4098171 A2 EP 4098171A2
Authority
EP
European Patent Office
Prior art keywords
valve
household appliance
reed valve
serration
serrated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22168862.5A
Other languages
German (de)
French (fr)
Other versions
EP4098171A3 (en
Inventor
Eduardo Jimenez Ruiz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP4098171A2 publication Critical patent/EP4098171A2/en
Publication of EP4098171A3 publication Critical patent/EP4098171A3/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • 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
    • F04B39/1086—Adaptations or arrangements of distribution members the members being reed valves flat annular reed valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/32—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members
    • F04C18/322—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members with vanes hinged to the outer member and reciprocating with respect to the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4291—Recovery arrangements, e.g. for the recovery of energy or water
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump arrangements

Definitions

  • the invention relates to a household appliance with a compressor containing a reed valve.
  • Household appliances in particular air conditioners or refrigerators often contain a compressor with a valve opened and closed to draw or discharge a refrigerant.
  • a suction hole for drawing a refrigerant from a suction chamber into a cylinder bore and a discharge hole for discharging a compressed refrigerant from the cylinder bore into a discharge chamber are formed in a valve plate placed between a cylinder head and the cylinder bore, and a suction valve and a discharge valve of a reed valve structure for opening and closing the suction hole and the discharge hole are attached to the valve plate.
  • a valve seat is in general formed in an outer peripheral portion of each of the suction hole and the discharge hole.
  • valve device for a compressor which has a reed valve structure, comprising a valve plate in which a valve hole opened and closed to draw or discharge a refrigerant is formed; a valve seat formed in an outer peripheral portion of the valve hole in the valve plate so as to protrude in a boss shape to a groove formed around an outside thereof; and a valve body having a proximal end connected to the valve plate and a distal end allowed to freely come into and out of contact with a seat surface of the valve seat, wherein the valve seat or a peripheral portion including the valve seat is formed so that a portion corresponding to a distal side of the valve body is reinforced relative to a portion corresponding to a proximal side of the valve body.
  • a noise suppression effect is asserted.
  • the publication EP 0 926 345 A2 describes a compressor having a discharge valve mechanism, comprising a valve plate having at least one discharge passage for providing fluid communication between a piston cylinder and a discharge chamber, a discharge valve reed, and a valve retainer, and said at least one discharge passage comprising a first piston cylinder-side opening having an area, a discharge chamber-side opening having an area and a sidewall extending between said openings, wherein at least a portion of said discharge passage sidewall is tapered and wherein said discharge chamber-side opening area is greater than said first piston cylinder-side opening area.
  • the invention is thus directed to a household appliance with a compressor containing a reed valve, wherein the reed valve is a serrated reed valve and/or a valve seat comprises a turbulence reducing structure selected from the group consisting of a porous material, a protuberance or a valve seat serration.
  • “Serrated” means in general that a serrated structure is provided at the edge of the reed valve, in particular the edge of a head part that serves to open and close a discharge opening.
  • the corresponding serration can extend vertically or obliquely from the edge.
  • the shape, height width, inclination of serration, the shape of protuberances and the number or hole diameter of the porous material can be adjusted.
  • the compressor is not specifically limited as long as it contains a reed valve.
  • the compressor might be for example a reciprocating compressor, a scroll compressor or a rolling piston rotary compressor.
  • the compressor is a rolling piston rotary compressor.
  • a household appliance is moreover preferred that comprises a heat pump.
  • a household appliance is preferred, wherein the household appliance is selected from the group consisting of a dryer, washer-dryer, dishwasher, air conditioner and residential heat pump. More preferably, the household appliance is a dryer or washer-dryer.
  • the reed valve is a serrated reed valve. It is then preferable that a serration on the serrated reed valve is oriented in the direction of a discharge opening.
  • the serration applied in the present invention is not particularly limited.
  • a household appliance is however preferred, wherein the serration of the serrated reed valve comprises serration peaks and serration valleys.
  • the serration peaks have identical height and the serration valleys have identical depths.
  • the height of the serration peak can be termed 2h and a pitch of the serrated shape, i.e. the base of for example a triangle can be termed ⁇ .
  • the pitch may be termed rotational pitch.
  • the angle defined by two edges that are not fully connected to the reed valve may be termed 2 ⁇ .
  • an angle ⁇ between a plane defined by the reed valve and the plane in which the serration is located is in the range of from 0 to 60 °.
  • the serration height in particular the height of the triangle (2h), and the other serration parameter mentioned above will be adjusted for nominal working conditions including pressure, temperature and type of gas/refrigerant.
  • the reed valve comprises in general a head part which serves to close the discharge opening and a root part that is fixed to a main body, the valve seat.
  • the compressor used in the present invention contains in general a valve reed retainer. Namely, under usual working conditions, pressure increases in a compression chamber of the compressor until the pressure is higher than the force exerted by the valve, in particular higher than the pressure on the other side of the valve reed, which is usually a flat metal sheet, made for example of steel.
  • the serrated valve will open to allow the flow of the discharged gas.
  • the function of the valve reed retainer is to avoid a big distortion of the reed valve.
  • the reed valve will lift up more or less and it could happen that a large deflection creates a plastic deformation in the reed valve.
  • the retainer is a stop to prevent a plastic or permanent deformation.
  • valve reed will be lifted and compressed gas/refrigerant will flow through the discharge port at high speed.
  • the present invention has the advantage that a household appliance with a compressor containing a reed valve is provided in which a significant noise reduction can be achieved.
  • Fig. 1 shows as an example of a compressor 1 which may be used in the present invention a rolling piston rotary compressor 1 in four states of its action.
  • the rolling piston rotary compressor 1 comprises a cylinder 7 in which a rolling piston 6 is rotated around a crank shaft 8.
  • a cooling agent here for example air
  • 11 indicates the flow direction of the sucked air.
  • the sucked air is transported by the rolling piston 6 in the direction of a discharge opening 3 (see for example A).
  • the eccentric movement of the rolling piston 6 separates the zone of increasing pressure 9 (see B and C) from the sucked air.
  • a flexible arranged vane 5 separates moreover the flows of sucked and discharged air.
  • On the discharge opening 3 a serrated reed valve 4 is provided that is in A in a closed position and in D in an opened position. Accordingly, the compressed air may leave the cylinder in D through the discharge opening 3.
  • 10 indicates the flow direction of the discharged gas.
  • Fig. 2 shows in the upper part in a side view a serrated reed valve 4 that is fixed via a bolt 13 on a valve seat 17.
  • 3 means a discharge opening which is here circular.
  • a valve reed retainer 12 protects the serrated reed valve 4 against disturbances which might result in an excessive form change of the serrated reed valve 4.
  • 18 refers to the serration of the reed valve 4.
  • a top view of the serrated reed valve 4 is shown.
  • the serrated reed valve 4 comprises a head part 15 and a root part 16 with a hole 14 for fixation of the serrated with a bolt that is not shown here.
  • the head part 15 is of essentially circular form and thus adapted to the circular shape of the discharge opening.
  • the serration 18 can be seen here in more detail.
  • Fig. 3 shows a side view of a serrated reed valve 4 with a serration 18 at the head part inclined by an angle ⁇ .
  • 18 refers to the serration, 15 to the head part of the reed valve 14, 17 to the valve seat 17, 3 to the discharge opening.
  • Fig. 4 shows in a) an unserrated reed valve 19, i.e. a reed valve without serration, according to the state of the art and in b) a serrated reed valve 4 as used in the present invention.
  • 18 refers to the serration, 15 to the head part of the reed valve 14, and 16 to root part of the reed valve 4.
  • Fig. 5 shows a perspective view of the serrated reed 4 valve shown in Fig. 4 b) .
  • the reference signs have the same meaning as in Fig. 4 b) .
  • Fig. 6 shows in detail a part of head part 15 of the serrated reed valve 4 wherein the serration 18 can be seen in detail.
  • the serration 18 is here formed by an essentially triangular structure with equidistant valleys of serration 24 and serration peaks 25.
  • the (rotational) pitch ⁇ , i.e. 23, is the base of a respective triangle.
  • the distance 21 between the base circumference and a serration peak 25 is the length of serration (2h) 21.
  • the angle 2 ⁇ 22 is defined by 2 edges that are not fully connected to the reed valve or wing edge. 10 indicates the flow direction of discharged gas.

Abstract

The invention relates to a household appliance with a compressor 1 containing a reed valve 4,19, wherein the reed valve 4,19 is a serrated reed valve 4 and/or a valve seat 17 comprises a turbulence reducing structure selected from the group consisting of a porous material, a protuberance or a valve seat serration.

Description

  • The invention relates to a household appliance with a compressor containing a reed valve.
  • Household appliances, in particular air conditioners or refrigerators often contain a compressor with a valve opened and closed to draw or discharge a refrigerant. Often in such a compressor a suction hole for drawing a refrigerant from a suction chamber into a cylinder bore and a discharge hole for discharging a compressed refrigerant from the cylinder bore into a discharge chamber are formed in a valve plate placed between a cylinder head and the cylinder bore, and a suction valve and a discharge valve of a reed valve structure for opening and closing the suction hole and the discharge hole are attached to the valve plate. In this case, a valve seat is in general formed in an outer peripheral portion of each of the suction hole and the discharge hole. When, upon the opening of the valve, a negative suction pressure or a discharge pressure from the cylinder bore increases and is equal to or higher than the valve opening pressure, the valve opens. However, pressure pulsations because of suction pulsations or discharge pulsations occurring at this time increase the noise in the compressor and decrease its efficiency.
  • The publication EP 2 685 103 A1 describes a valve device for a compressor, which has a reed valve structure, comprising a valve plate in which a valve hole opened and closed to draw or discharge a refrigerant is formed; a valve seat formed in an outer peripheral portion of the valve hole in the valve plate so as to protrude in a boss shape to a groove formed around an outside thereof; and a valve body having a proximal end connected to the valve plate and a distal end allowed to freely come into and out of contact with a seat surface of the valve seat, wherein the valve seat or a peripheral portion including the valve seat is formed so that a portion corresponding to a distal side of the valve body is reinforced relative to a portion corresponding to a proximal side of the valve body. A noise suppression effect is asserted.
  • The publication EP 0 926 345 A2 describes a compressor having a discharge valve mechanism, comprising a valve plate having at least one discharge passage for providing fluid communication between a piston cylinder and a discharge chamber, a discharge valve reed, and a valve retainer, and said at least one discharge passage comprising a first piston cylinder-side opening having an area, a discharge chamber-side opening having an area and a sidewall extending between said openings, wherein at least a portion of said discharge passage sidewall is tapered and wherein said discharge chamber-side opening area is greater than said first piston cylinder-side opening area.
  • In view of this situation it is an object of the present invention to provide a household appliance with a compressor containing a reed valve in which a significant noise reduction can be achieved.
  • This object is achieved according to the invention with a household appliance having the features of the independent claim. Preferred embodiments of the household appliance are disclosed in the corresponding dependent claims.
  • The invention is thus directed to a household appliance with a compressor containing a reed valve, wherein the reed valve is a serrated reed valve and/or a valve seat comprises a turbulence reducing structure selected from the group consisting of a porous material, a protuberance or a valve seat serration.
  • "Serrated" means in general that a serrated structure is provided at the edge of the reed valve, in particular the edge of a head part that serves to open and close a discharge opening. The corresponding serration can extend vertically or obliquely from the edge.
  • In order to reduce turbulence and therefore noise the shape, height width, inclination of serration, the shape of protuberances and the number or hole diameter of the porous material can be adjusted.
  • In the household appliance of the present invention the compressor is not specifically limited as long as it contains a reed valve. The compressor might be for example a reciprocating compressor, a scroll compressor or a rolling piston rotary compressor.
  • In a preferred embodiment of the household appliance, the compressor is a rolling piston rotary compressor.
  • A household appliance is moreover preferred that comprises a heat pump.
  • In general, a household appliance is preferred, wherein the household appliance is selected from the group consisting of a dryer, washer-dryer, dishwasher, air conditioner and residential heat pump. More preferably, the household appliance is a dryer or washer-dryer.
  • In a preferred embodiment of the household appliance of the present invention, the reed valve is a serrated reed valve. It is then preferable that a serration on the serrated reed valve is oriented in the direction of a discharge opening.
  • The serration applied in the present invention is not particularly limited. A household appliance is however preferred, wherein the serration of the serrated reed valve comprises serration peaks and serration valleys. Preferably, the serration peaks have identical height and the serration valleys have identical depths. The height of the serration peak can be termed 2h and a pitch of the serrated shape, i.e. the base of for example a triangle can be termed λ. In the case of a circular serration edge, the pitch may be termed rotational pitch. The angle defined by two edges that are not fully connected to the reed valve may be termed 2Θ.
  • In a preferred embodiment of the household appliance, an angle Φ between a plane defined by the reed valve and the plane in which the serration is located is in the range of from 0 to 60 °.
  • In order to reduce noise, the serration height, in particular the height of the triangle (2h), and the other serration parameter mentioned above will be adjusted for nominal working conditions including pressure, temperature and type of gas/refrigerant.
  • The reed valve comprises in general a head part which serves to close the discharge opening and a root part that is fixed to a main body, the valve seat.
  • The compressor used in the present invention contains in general a valve reed retainer. Namely, under usual working conditions, pressure increases in a compression chamber of the compressor until the pressure is higher than the force exerted by the valve, in particular higher than the pressure on the other side of the valve reed, which is usually a flat metal sheet, made for example of steel. The serrated valve will open to allow the flow of the discharged gas. The function of the valve reed retainer is to avoid a big distortion of the reed valve. Depending on the working conditions (pressure and temperature of compressed air/refrigerant), the reed valve will lift up more or less and it could happen that a large deflection creates a plastic deformation in the reed valve. The retainer is a stop to prevent a plastic or permanent deformation.
  • The valve reed will be lifted and compressed gas/refrigerant will flow through the discharge port at high speed.
  • The present invention has the advantage that a household appliance with a compressor containing a reed valve is provided in which a significant noise reduction can be achieved.
  • The invention is described in the following in more detail by referring to the attached Figures 1 to 6.
    • Fig. 1 shows as an example of a compressor which may be used in the present invention a rolling piston rotary compressor in four states of its action.
    • Fig. 2 shows above in a side view a serrated reed valve that is fixed via a bolt on a valve seat and below a top view of the serrated reed valve.
    • Fig. 3 shows a side view of a serrated reed valve with a serration inclined by an angle Φ.
    • Fig. 4 shows in a) an unserrated reed valve according to the state of the art and in b) a serrated reed valve as used in the present invention.
    • Fig. 5 shows a perspective view of the serrated reed valve shown in Fig. 4 b).
    • Fig. 6 shows in detail a part of the head part of the reed valve wherein the serration can be seen in detail.
  • Fig. 1 shows as an example of a compressor 1 which may be used in the present invention a rolling piston rotary compressor 1 in four states of its action. The rolling piston rotary compressor 1 comprises a cylinder 7 in which a rolling piston 6 is rotated around a crank shaft 8. A cooling agent (here for example air) is introduced via a suction opening 2. 11 indicates the flow direction of the sucked air. The sucked air is transported by the rolling piston 6 in the direction of a discharge opening 3 (see for example A). The eccentric movement of the rolling piston 6 separates the zone of increasing pressure 9 (see B and C) from the sucked air. A flexible arranged vane 5 separates moreover the flows of sucked and discharged air. On the discharge opening 3 a serrated reed valve 4 is provided that is in A in a closed position and in D in an opened position. Accordingly, the compressed air may leave the cylinder in D through the discharge opening 3. 10 indicates the flow direction of the discharged gas.
  • Fig. 2 shows in the upper part in a side view a serrated reed valve 4 that is fixed via a bolt 13 on a valve seat 17. 3 means a discharge opening which is here circular. A valve reed retainer 12 protects the serrated reed valve 4 against disturbances which might result in an excessive form change of the serrated reed valve 4. 18 refers to the serration of the reed valve 4. In the lower part of Fig. 2, a top view of the serrated reed valve 4 is shown. The serrated reed valve 4 comprises a head part 15 and a root part 16 with a hole 14 for fixation of the serrated with a bolt that is not shown here. The head part 15 is of essentially circular form and thus adapted to the circular shape of the discharge opening. The serration 18 can be seen here in more detail.
  • Fig. 3 shows a side view of a serrated reed valve 4 with a serration 18 at the head part inclined by an angle Φ. 18 refers to the serration, 15 to the head part of the reed valve 14, 17 to the valve seat 17, 3 to the discharge opening.
  • Fig. 4 shows in a) an unserrated reed valve 19, i.e. a reed valve without serration, according to the state of the art and in b) a serrated reed valve 4 as used in the present invention. 18 refers to the serration, 15 to the head part of the reed valve 14, and 16 to root part of the reed valve 4.
  • Fig. 5 shows a perspective view of the serrated reed 4 valve shown in Fig. 4 b). The reference signs have the same meaning as in Fig. 4 b).
  • Fig. 6 shows in detail a part of head part 15 of the serrated reed valve 4 wherein the serration 18 can be seen in detail. The serration 18 is here formed by an essentially triangular structure with equidistant valleys of serration 24 and serration peaks 25. The (rotational) pitch λ, i.e. 23, is the base of a respective triangle. The distance 21 between the base circumference and a serration peak 25 is the length of serration (2h) 21. The angle 2θ 22 is defined by 2 edges that are not fully connected to the reed valve or wing edge. 10 indicates the flow direction of discharged gas.
    • REFERENCE SIGNS
    • 1
    compressor; rolling piston rotary compressor
    2
    suction opening
    3
    discharge opening
    4
    discharge valve; serrated reed valve
    5
    vane
    6
    rolling piston
    7
    cylinder
    8
    crank shaft
    9
    zone of increasing pressure
    10
    direction of discharged gas
    11
    direction of sucked gas
    12
    retainer; valve reed retainer
    13
    bolt
    14
    hole in the reed valve for the bolt
    15
    head part of the reed valve
    16
    root part of the reed valve
    17
    valve seat
    18
    serration
    19
    reed valve without serration
    20
    angle Φ between a plane defined by the reed valve and the plane in which the serration is located
    21
    length of serration (2h); distance between base circumference and serration peak
    22
    angle 20 defined by 2 edges that are not fully connected to the reed valve (edge)
    23
    (rotational) pitch λ of serrated shape, i.e. base of triangle
    24
    valley of serration
    25
    serration peak

Claims (10)

  1. A household appliance with a compressor (1) containing a reed valve (4,19), characterized in that the reed valve (4,19) is a serrated reed valve (4) and/or that a valve seat (17) comprises a turbulence reducing structure selected from the group consisting of a porous material, a protuberance or a valve seat serration.
  2. Household appliance according to claim 1, wherein the compressor (1) is a rolling piston rotary compressor.
  3. Household appliance according to claim 1 or 2, comprising a heat pump.
  4. Household appliance according to any of claims 1 to 3, wherein the household appliance is selected from the group consisting of a dryer, washer-dryer, dishwasher, air conditioner and residential heat pump.
  5. Household appliance according to claim 4, wherein the household appliance is a dryer or washer-dryer.
  6. Household appliance according to any of claims 1 to 5, wherein the reed valve (4) is a serrated reed valve (4).
  7. Household appliance according to claim 6, wherein a serration (18) on the serrated valve (4) is oriented in the direction of a discharge opening (3).
  8. Household appliance according to claim 6 or 7, according to which the serration (18) of the serrated reed valve (4) comprises serration peaks (25) and serration valleys (24).
  9. Household appliance according to any of claim 7 to 9, wherein an angle Φ (20) between a plane define by the reed valve (4) and the plane in which the serration is located is in the range of from 0 to 60 °.
  10. Household appliance according to any of claims 1 to 9, wherein the reed valve (4,19) contains a flat metal sheet or consists of a flat metal sheet.
EP22168862.5A 2021-05-14 2022-04-19 Household appliance with a compressor containing a reed valve Pending EP4098171A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21382446 2021-05-14

Publications (2)

Publication Number Publication Date
EP4098171A2 true EP4098171A2 (en) 2022-12-07
EP4098171A3 EP4098171A3 (en) 2023-01-04

Family

ID=76197379

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22168862.5A Pending EP4098171A3 (en) 2021-05-14 2022-04-19 Household appliance with a compressor containing a reed valve

Country Status (2)

Country Link
EP (1) EP4098171A3 (en)
CN (1) CN115342046A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0926345A2 (en) 1997-12-26 1999-06-30 Sanden Corporation Shape of suction hole and discharge hole of refrigerant compressor
EP2685103A1 (en) 2011-03-08 2014-01-15 Sanden Corporation Valve device for compressor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH087099Y2 (en) * 1990-04-02 1996-02-28 株式会社豊田自動織機製作所 Noise reduction structure in compressor
JPH07174071A (en) * 1993-08-10 1995-07-11 Sanden Corp Discharge mechanism for compressor
KR20030039052A (en) * 2001-11-09 2003-05-17 주식회사 엘지이아이 Noise reducing structure for discharge valve assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0926345A2 (en) 1997-12-26 1999-06-30 Sanden Corporation Shape of suction hole and discharge hole of refrigerant compressor
EP2685103A1 (en) 2011-03-08 2014-01-15 Sanden Corporation Valve device for compressor

Also Published As

Publication number Publication date
EP4098171A3 (en) 2023-01-04
CN115342046A (en) 2022-11-15

Similar Documents

Publication Publication Date Title
JP5429353B1 (en) Compressor
WO2007129804A2 (en) Compressor
KR100312074B1 (en) Compressor for refrigeration cycle
CN108105091B (en) Compression mechanism and compressor with same
EP4098171A2 (en) Household appliance with a compressor containing a reed valve
EP1561033B1 (en) Suction valve for a small hermetic compressor
US20050079081A1 (en) Reciprocating compressor with enlarged valve seat area
JP2006502337A6 (en) Intake valve for small hermetic compressor
KR100874069B1 (en) Hermetic compressor
EP1301711B1 (en) Valve arrangement for a hermetic compressor
KR102139369B1 (en) Apparatus for valve of compressor and valve stopper thereof
US20070148026A1 (en) Compressor
CN102865230A (en) Exhaust valve plate for compressor
CN113153700B (en) Exhaust valve assembly, compressor comprising same and air conditioning equipment
JP3883758B2 (en) Refrigerant compressor
EP3816442B1 (en) Compressor and electronic device using same
JP4390444B2 (en) Compressor discharge valve mechanism
CN217712964U (en) Exhaust assembly, compressor and temperature adjusting device
CN218882524U (en) Silencer for compressor, compressor and air conditioner
CN218030629U (en) Bearing, bearing assembly and compressor
CN216691454U (en) Cylinder for rotary compressor, rotary compressor and refrigeration cycle device
CN112594424B (en) Exhaust structure, compressor and air conditioner
CN107091232B (en) Cover seal and cover seal assembly for compressor and compressor
CN107366622B (en) Cover seal and cover seal assembly for compressor and compressor
JP2003201965A (en) Gas compressor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: A47L0015000000

Ipc: F04B0039100000

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RIC1 Information provided on ipc code assigned before grant

Ipc: D06F 58/00 20200101ALI20221128BHEP

Ipc: A47L 15/00 20060101ALI20221128BHEP

Ipc: F04C 29/12 20060101ALI20221128BHEP

Ipc: F04C 18/32 20060101ALI20221128BHEP

Ipc: F04B 39/10 20060101AFI20221128BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230704

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR