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CN-121993398-A - Scroll compressor and heat pump apparatus

CN121993398ACN 121993398 ACN121993398 ACN 121993398ACN-121993398-A

Abstract

The application provides a scroll compressor which comprises an orbiting scroll, a fixed scroll, a shell and a driving mechanism, wherein the fixed scroll is provided with a base plate and a vortex wall arranged on the base plate, and the shell is arranged on one side of the base plate, which is away from the vortex wall. The casing has a first cavity with a first opening on the bottom surface of the casing facing the base plate, the first opening is covered by the base plate to form a gas-filling chamber, the gas-filling chamber is communicated to a compression chamber corresponding to an intermediate pressure stage formed by the movable scroll and the fixed scroll through a gas-filling hole on the base plate, the first cavity is communicated with a gas-filling hole of the scroll compressor, and a check valve device which is communicated in a one-way in the direction from the gas-filling hole to the gas-filling chamber is arranged in the first cavity. The application also relates to a corresponding heat pump device. The application has the advantages that the air supplementing chamber of the scroll compressor can be formed by a simple structure and a small number of parts.

Inventors

  • WANG HAIXIANG

Assignees

  • 罗伯特·博世有限公司

Dates

Publication Date
20260508
Application Date
20241101

Claims (10)

  1. 1.A scroll compressor, the scroll compressor (96) comprising: A movable scroll (35); A fixed scroll (1), wherein the fixed scroll (1) is provided with a base plate (10) and a scroll wall (11) arranged on the base plate (10), and A housing (2) arranged on a side of the base plate (10) facing away from the swirl wall (11); It is characterized in that the method comprises the steps of, The casing (2) is provided with a first cavity (22), the first cavity (22) is provided with a first opening (220) on the bottom surface (24) of the casing (2) facing the substrate (10), the first opening (220) is covered by the substrate (10) to form a gas supplementing chamber (30), the gas supplementing chamber (30) is communicated with a compression chamber (33) corresponding to an intermediate pressure stage formed by the movable scroll (35) and the fixed scroll (1) through a gas supplementing hole (13) on the substrate (10), the first cavity (22) is communicated with a gas supplementing port (26) of the scroll compressor (96), and a check valve device (7) for one-way through flow in the direction from the gas supplementing port (26) to the gas supplementing chamber (30) is arranged in the first cavity (22).
  2. 2. A scroll compressor according to claim 1, wherein the housing (2) has a second cavity (23), the second cavity (23) having a second opening (230) in a bottom surface (24) of the housing (2) facing the base plate (10), the second opening (230) being covered by the base plate (10) forming a discharge chamber (31), the discharge chamber (31) being in communication with a compression chamber (34) formed by the orbiting scroll (35) and the fixed scroll (1) corresponding to the highest pressure stage via a discharge hole (14) in the base plate (10), the discharge chamber (31) being in communication with a discharge port (28) of the scroll compressor.
  3. 3. The scroll compressor of claim 2, wherein the scroll compressor (96) includes at least one of the following features: The housing has an inner cavity (20) and a partition wall (21), the partition wall (21) crossing the inner cavity (20) to partition it into the first cavity (22) and the second cavity (23); The scroll compressor (96) comprises an integral seal (5) at least partially disposed between the housing (2) and the base plate (10), the plenum (30) and the discharge chamber (31) sharing the seal (5).
  4. 4. A scroll compressor according to claim 3, wherein the partition wall (21) has a convex shape (60) protruding towards the first chamber (22) as seen in projection in an axial direction (32) of the scroll compressor (96); Seen in projection in an axial direction (32) of the scroll compressor (96), the first chamber (22) comprises a small chamber (222) and a large chamber (223) on both sides of the convex shape (60) and a connecting channel (224) formed at a top (600) of the convex shape (60), the small chamber (222) and the large chamber (223) being in communication with each other via the connecting channel (224), the check valve device (7) being arranged within the large chamber (223), the small chamber (222) and the large chamber (223) each being in communication with one of the air-compensating holes (13) on the base plate (10); -the housing (2) has a discharge duct (280) communicating to the discharge opening (28), the discharge chamber (31) communicating to the discharge duct (280) via a through-flow hole (281) on the discharge duct (280), the through-flow hole (281) being adjacent to the top (600) of the convex shape (60) as seen in projection along the axial direction (32) of the scroll compressor (96); The partition wall (21) has two shoulders (61) located on either side of the convex shape (60), the convex shape (60) being connected to a side wall (200) of the inner chamber (20) via the two shoulders (61), each one of the air-compensating holes (13) being adjacent to a transition (62) of the convex shape (60) with each one of the shoulders (61), as seen in projection in an axial direction (32) of the scroll compressor (96).
  5. 5. A scroll compressor according to claim 3 or 4, wherein the seal (5) comprises an annular sealing portion (51) and a partition sealing portion (50) connected to the annular sealing portion (51), the annular sealing portion (51) surrounding the inner chamber (20) as seen in projection along an axial direction (32) of the scroll compressor (96), the partition sealing portion (50) being adapted to be placed between the partition wall (21) and the base plate (10) to seal the plenum chamber (30) and the discharge chamber (31) from each other.
  6. 6. The scroll compressor of claim 5, wherein the scroll compressor (96) includes at least one of the following features: -said partition sealing portion (50) having a protruding section (63) protruding towards said first cavity (22); The seal (5) comprises an outer ring portion (52) surrounding the annular seal portion (51) and a connecting portion (53) connecting the annular seal portion (51) with the outer ring portion (52).
  7. 7. The scroll compressor of claim 5, wherein the scroll compressor (96) includes at least one of the following features: The partition sealing portion (50) includes, as seen in cross section, a raised portion (54) in the middle and supporting portions (55) on both sides of the raised portion (54), thereby forming an elastic structure; The partition seal includes a metal layer (56) in the middle and an elastomer layer (57) on both sides of the metal layer (56) for contact with the housing (2) and the base plate (10), respectively, in an axial direction (32) of the scroll compressor (96).
  8. 8. The scroll compressor of any one of claims 1 to 4, wherein the scroll compressor comprises at least one of the following features: The check valve device (7) comprises a valve plate (71), a baffle plate (72) for limiting the opening height of the valve plate (71), and a screw (73) for fixing the valve plate (71) and the baffle plate (72) to the housing (2); -a partial recess (225) for housing the check valve device (7) is provided in the bottom of the first chamber (22); the first cavity (22) is flat.
  9. 9. A scroll compressor according to claim 3, wherein the scroll compressor (96) includes at least one of the following features: the partition wall (21) extends parallel to an axial direction (32) of the scroll compressor (96); Along an axial direction (32) of the scroll compressor (96), the partition wall (21) is flush with a bottom surface (24) of the housing (2) facing the base plate (10).
  10. 10. Heat pump device, characterized in that it comprises a scroll compressor according to any one of claims 1 to 9 and comprises an evaporator (90), a condenser (91), an expansion valve (92) and a make-up gas supply device (95), the outlet (950) of the make-up gas supply device (95) being connected to the make-up port (26) of the scroll compressor (96).

Description

Scroll compressor and heat pump apparatus Technical Field The present application relates to a scroll compressor and a heat pump apparatus. The scroll compressor and heat pump apparatus of the present application are particularly useful in vehicular, residential or industrial plant settings and the like. Background In a vehicle or a house, a heat pump device is generally used for changing an ambient temperature, for example, heating or cooling. Heat pump devices typically have a compressor, a condenser, an evaporator, and an expansion valve. The compressor often adopts a scroll compressor, and has the advantages of high efficiency, stable operation, high reliability and the like. Conventional scroll compressors have a low COP (Coefficient of Performance ), especially in low temperature environments. In order to further improve efficiency, a scroll compressor of the air-supplementing enthalpy-increasing type is currently known. However, the structure of the air supply chamber of the conventional air supply enthalpy-increasing type scroll compressor is very complex and a large number of components are required, so that great cost is brought about in terms of time and cost in manufacturing and assembling. Disclosure of Invention The present application aims to provide a scroll compressor, which can form a gas supplementing chamber of the scroll compressor with a simple structure and a small number of components. According to a first aspect of the present application, there is provided a scroll compressor comprising: A movable scroll; a fixed scroll having a base plate and a scroll wall provided on the base plate, and A housing disposed on a side of the base plate facing away from the scroll wall; It is characterized in that the method comprises the steps of, The casing has a first cavity with a first opening on the bottom surface of the casing facing the base plate, the first opening is covered by the base plate to form a gas-filling chamber, the gas-filling chamber is communicated to a compression chamber corresponding to an intermediate pressure stage formed by the movable scroll and the fixed scroll through a gas-filling hole on the base plate, the first cavity is communicated with a gas-filling hole of the scroll compressor, and a check valve device which is communicated in a one-way in the direction from the gas-filling hole to the gas-filling chamber is arranged in the first cavity. According to a second aspect of the present application there is provided a heat pump apparatus comprising the aforementioned scroll compressor and comprising an evaporator, a condenser, an expansion valve and a make-up gas supply means, the outlet of the make-up gas supply means being connected to the make-up port of the scroll compressor. The application has the positive effects of forming the air supplementing chamber of the scroll compressor through a simple structure and a small number of parts, effectively reducing the pressure fluctuation of the discharge chamber and allowing the integration of the sealing element. Drawings The principles, features and advantages of the present application may be better understood by describing the present application in more detail with reference to the drawings. The drawings include: fig. 1 schematically shows an example of an orbiting scroll and a fixed scroll of a scroll compressor of the present application in a sectional view. Fig. 2 shows an example of some of the components of the scroll compressor of the present application in an exploded perspective view. Fig. 3 schematically shows an example of a housing in a perspective view. Fig. 4 schematically illustrates an example of a casing and a fixed scroll and discharge orifice check valve apparatus in a perspective cross-sectional view. Fig. 5 shows the fixed scroll of fig. 2 in an enlarged view. Fig. 6 schematically illustrates one example of a casing, a fixed scroll, and a discharge orifice check valve apparatus in a perspective view, wherein the casing is cut away. Fig. 7 schematically illustrates one example of a fixed scroll, seal and bleed hole check valve arrangement in a perspective view. Fig. 8 shows an example of a housing and a check valve device for a plenum in a perspective sectional view. Fig. 9 schematically shows an example of a housing and a sensor in a perspective view. Fig. 10 schematically shows an example of a cross section of the partition sealing portion. Fig. 11 schematically shows another example of a housing and a check valve arrangement for a plenum in an exploded perspective view. Fig. 12 schematically illustrates the housing and check valve arrangement of fig. 11 in a perspective view. Fig. 13 schematically shows an example of the heat pump apparatus of the present application. Detailed Description In order to make the technical problems, technical solutions and advantageous technical effects to be solved by the present application more apparent, the present application will be further described in de