Scroll compressor and heating, ventilating, air conditioning and refrigerating system

Abstract

A scroll compressor includes a compressor housing, a scroll support attached to the compressor housing, an injection conduit, and an orbital motion scroll member and a non-orbital motion scroll member intermeshing to form a compression chamber within the compressor housing. The scroll compressor also includes a suction inlet, a medium injection inlet, and a discharge port disposed in the compressor housing, respectively. The compression cavity is configured to suck in from the suction inlet and discharge to the discharge outlet. The injection conduit extends from the medium injection inlet through the scroll support and the non-orbital motion scroll member to a medium injection port. A heating, ventilation, air conditioning, and refrigeration system includes a refrigerant circuit including a condenser, at least one expander, an evaporator, and a scroll compressor in fluid connection.

Description

Technical Field

[0001] This invention relates to a scroll compressor with intermediate injection. More specifically, this invention relates to providing intermediate injection to a scroll compressor in a heating, ventilation, air conditioning, and refrigeration (HVACR) system. Background Technology

[0002] A scroll compressor is a type of compressor used to compress gases. Heating, ventilation, air conditioning, and refrigeration systems (HVACR) can utilize compressors to compress gaseous working fluids. One type of compressor is the scroll compressor, which typically includes a pair of scroll components that move in opposite orbits to compress gases (e.g., air, refrigerant, etc.). Generally, a scroll compressor includes a first stationary scroll component and a second orbitally moving scroll component, each scroll component having a generally helical winding portion. The helical winding portions of the two scroll components mesh with each other, forming a series of compression chambers. The second orbitally moving scroll component is driven by a rotating shaft to move about the orbit of the first stationary scroll component via the rotating shaft, thereby compressing the gas within the compression chambers. Utility Model Content

[0003] The purpose of this invention is to provide a scroll compressor and HVACR system with intermediate injection without the need for special casting or additional components.

[0004] In one embodiment, a scroll compressor includes a compressor housing, a scroll support, a track-moving scroll component and a non-track-moving scroll component that mesh with each other to form a compression chamber within the compressor housing, and an intake port, an intermediate injection inlet, and an outlet port respectively disposed in the compressor housing. The compression chamber is configured to draw in through the intake port and discharge through the outlet port. The non-track-moving scroll component includes an intermediate injection port for the compression chamber. The scroll support is attached to the compressor housing at the intermediate injection inlet. The scroll compressor also includes an injection conduit extending from the intermediate injection inlet in the compressor housing through the scroll support and the non-track-moving scroll component to the intermediate injection port.

[0005] In one embodiment, a heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a refrigerant circuit comprising a condenser, at least one expander, an evaporator, and a scroll compressor in fluid connection. A working fluid flows through the refrigerant circuit. The scroll compressor includes a compressor housing, a scroll support, orbital and non-orbital motion scroll components meshing to form a compression chamber within the compressor housing, and an inlet, an intermediate injection inlet, and an outlet respectively disposed within the compressor housing. The compression chamber is configured to draw in fluid through the inlet and discharge fluid through the outlet. The non-orbital motion scroll component includes an intermediate injection port for the compression chamber. The scroll support is attached to the compressor housing at the intermediate injection inlet. The scroll compressor also includes an injection conduit extending from the intermediate injection inlet in the compressor housing through the scroll support and the non-orbital motion scroll component to the intermediate injection port. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of a refrigerant circuit in a heating, ventilation, air conditioning and refrigeration (HVACR) system according to one embodiment.

[0007] Figure 2 This is a front perspective view of a scroll compressor according to one embodiment.

[0008] Figure 3 According to one embodiment Figure 2 The image shows a vertical cross-sectional view of a scroll compressor.

[0009] Figure 4 According to one embodiment Figure 2 The image shows a partial vertical cross-sectional view of a scroll compressor.

[0010] The same reference numerals denote the same features. Detailed Implementation

[0011] As used herein, the term "axial" refers to the axial direction relative to the scroll compressor, where the "axial direction" of the scroll compressor is defined by the length axis of the compressor's crankshaft. The axial direction extends in a direction parallel or substantially parallel to the length axis of the crankshaft. For example, the difference between the length axis of the crankshaft and the axial direction may be a certain inclination that is configured to draw in and / or drive oil through internal passages of the crankshaft.

[0012] As used herein, the term "face" in the context of a surface or opening refers to a view of a vector perpendicular to the surface or opening. For example, surface X facing feature Y means that a vector perpendicular to surface X will contact feature Y. Similarly, opening X facing feature Z means that a vector perpendicular to the plane of opening X will contact feature Z.

[0013] Figure 1 This is a schematic diagram of a refrigerant circuit 5 in a heating, ventilation, air conditioning, and cooling (HVACR) system 1 according to one embodiment. In one embodiment, the HVACR system 1 may be an industrial, commercial, or residential HVACR system configured to regulate the interior of a building (e.g., office space, residence, etc.). In one embodiment, the HVACR system 1 may be a transport HVACR for cooling the interior of transport units (e.g., shipping containers, transport / truck containers, refrigerated containers, etc.) and / or passenger vehicles (e.g., buses, airplanes, etc.).

[0014] The refrigerant circuit 5 includes a compressor 10, a condenser 20, a first expansion device 30, a second expansion device 32, and an evaporator 50, all fluidly connected. In one embodiment, the refrigerant circuit 5 may be modified to include additional components. For example, in one embodiment, the refrigerant circuit 5 may include one or more flow control devices, a receiver tank, a dryer, a suction liquid heat exchanger, etc. The components of the refrigerant circuit 5 are fluidly connected. Figure 1 The diagram provides dashed and dotted lines to indicate fluid flow through certain components (e.g., compressor 10, condenser 20, evaporator 50) for clarity purposes, but it should be understood that it does not specify the specific path within each component.

[0015] The refrigerant circuit 5 can be configured as a cooling system (e.g., a fluid cooler for HVACR, an air conditioning system, etc.) which can operate in cooling mode, and / or the refrigerant circuit 5 can be configured as a heat pump system which can operate in both cooling and heating modes.

[0016] The refrigerant circuit 5 utilizes known principles of gas compression and heat transfer. The refrigerant circuit 5 can be configured to heat or cool process fluids (e.g., water, air, coolant, etc.). In one embodiment, the refrigerant circuit 5 can represent a cooler for cooling process fluids (e.g., water, etc.). In another embodiment, the refrigerant circuit 5 can represent an air conditioner and / or a heat pump for cooling and / or heating process fluids (e.g., air, water, etc.).

[0017] During operation of refrigerant circuit 5, a gaseous working fluid (e.g., containing refrigerant, a refrigerant mixture, etc.) flows from evaporator 50 into compressor 10 at a relatively low pressure. Compressor 10 compresses the gaseous working fluid to a high-pressure state while simultaneously heating the gas. Compressor 10 includes a suction inlet 12, a discharge outlet 14, an intermediate injection inlet 16, and a compression mechanism 18 configured to move within compressor 10 to compress the gas to a high-pressure state. The low-pressure gaseous working fluid flows from evaporator 50 into suction inlet 12 of compressor 10 and is discharged from discharge outlet 14 of compressor 10 after being compressed by compression mechanism 18. The working fluid flows from suction inlet 12 into compression mechanism 18 and then out of compressor 10 from compression mechanism 18 through discharge outlet 14.

[0018] In one embodiment, the compressor 10 is of the type that utilizes intermediate-pressure working fluid injection into the compression mechanism 18 (e.g., economizer injection, etc.). In one embodiment, the compressor 10 is a scroll compressor, and the compression mechanism 18 is a pair of meshing scroll components (e.g., intermediate-pressure gaseous working fluid is injected into an intermediate compression chamber formed between the meshing scroll components). The intermediate-pressure gaseous working fluid flows into the intermediate injection inlet 16 of the compressor 10 and from the intermediate injection inlet 16 into the compression mechanism 18. The intermediate-pressure gaseous working fluid mixes with the gaseous working fluid being compressed within the compression mechanism 18 (e.g., mixes with the gaseous working fluid that has already been partially compressed within the compression mechanism 18), is further compressed within the compression mechanism 18, and is then discharged from the compression mechanism 18 and flows out of the compressor 10 through the discharge outlet 14.

[0019] The compressed, relatively high-pressure, and high-temperature gaseous working fluid flows from the outlet 14 of the compressor 10 to the condenser 20. The working fluid flows through the condenser 20. In addition to the working fluid flowing through the condenser 20, a first process fluid PF1 (e.g., external air, external water, cooling / heating water, ethylene glycol, combinations thereof, etc.) also flows through the condenser 20. The first process fluid PF1 absorbs heat from the working fluid as it flows through the condenser 20, thereby cooling the working fluid. The working fluid condenses into a liquid within the condenser 20. The liquid working fluid then flows from the condenser 20 to the expansion units 30, 32.

[0020] A first portion of the relatively cold, relatively high-pressure liquid working fluid discharged from condenser 20 flows into the first expansion device 30. A second portion of the relatively cold, relatively high-pressure liquid working fluid discharged from condenser 20 flows into the second expansion device 32. Figure 1 As shown, the first expansion device 30 and the second expansion device 32 are arranged in parallel downstream of the condenser 20.

[0021] The first expansion device 30 expands the working fluid, thereby converting the working fluid into a mixed vapor and liquid state. Expansion also results in further cooling of the working fluid. The term "expansion device" as used herein may also be referred to as an expander. In one embodiment, the expander may be an expansion valve, expansion plate, expansion container, orifice, or other type of expansion mechanism. It should be understood that the expander can be any type of expansion device used to expand the working fluid to cause a decrease in pressure and temperature of the gaseous working fluid. The first expander 30 and the second expander 32 may be the same type of expansion device or different types of expansion devices. In one embodiment, one or both of expanders 30 and 32 are adjustable expansion devices. For example, expanders 30 and 32 may be expansion valves. For example, one or both of expanders 30 and 32 may be adjustable to control the amount of working fluid flowing into the suction inlet 12 and intermediate injection inlet 16 of the compressor 10.

[0022] Then, a further relatively lower temperature vapor / liquid working fluid flows from the second expander 32 into the evaporator 50. A second process fluid PF2 (e.g., air, coolant, water, ethylene glycol, combinations thereof, etc.) also flows through the evaporator 50. The working fluid absorbs heat from the second process fluid PF2 as it flows through the evaporator 50, thereby cooling the second process fluid PF2. As the working fluid absorbs heat, it evaporates into vapor. The gaseous / mostly gaseous working fluid then returns from the evaporator 50 to the compressor 10.

[0023] A second portion of the relatively cold, relatively high-pressure liquid working fluid discharged from the condenser 20 flows to the second expander 32. The second expander 32 expands the working fluid, thereby converting it into a vapor state. The expansion also causes further cooling of the working fluid. Then, the relatively low-temperature, intermediate-pressure gaseous working fluid flows from the second expander 32 to the intermediate injection inlet 16 of the compressor 10.

[0024] The above process continues while refrigerant circuit 5 is operating (e.g., in cooling mode). In one embodiment, HVACR system 1 may include a controller (not shown) for controlling the operation of expanders 30, 32. The controller may control expanders 30, 32 (e.g., the degree of opening of each expansion valve) so that a desired amount (e.g., percentage, etc.) of working fluid discharged from the condenser flows through the first expander 30 and the second expander 32.

[0025] Those skilled in the art will understand that the intermediate pressure fluid can be provided to the compressor in a manner different from the illustrated embodiment. For example, in one embodiment of the refrigerant circuit 5, a first expander 30 and a second expander 32 may be arranged in series, and the intermediate pressure gaseous fluid provided to the intermediate injection inlet 16 may be a portion of the working fluid flowing from the first expander 30 to the second expander 32. For example, in one embodiment, the refrigerant circuit may include an economizer heat exchanger (e.g., economizer 40) that heats or cools the intermediate pressure working fluid with a portion of the working fluid flowing from the condenser 20 to the evaporator 50. In one embodiment, the intermediate pressure working fluid may be a liquid working fluid provided from the condenser 20 or another location within the refrigerant circuit 5.

[0026] Figure 2 This is a front perspective view of a scroll compressor 100 in one embodiment. In one embodiment, the scroll compressor may be... Figure 1 The compressor 10 is located in the refrigerant circuit 5. The compressor 100 includes a compressor housing 102, and the housing 102 contains the components of the compressor 100. (Example...) Figure 2 As shown, the compressor housing 102 is the outer shell of the compressor 100.

[0027] The compressor 100 includes multiple fluid ports extending through the compressor housing 102 for drawing in and discharging working fluid into and out of the compressor 100. The working fluid enters and exits the compressor 100 through the fluid ports in the compressor housing 102. The fluid ports include a suction port 104A, a discharge port 104B, and an intermediate injection inlet 104C. The working fluid to be compressed is drawn into the compressor 100 via a fluid inlet. S The working fluid flows into the compressor 100 through the suction port 104A in the compressor housing 102 at a relatively low pressure (e.g., at a first pressure P1). The discharge flow of the compressed working fluid is ƒ. D The fluid is discharged from the outlet 104B of the compressor 100 at a relatively high pressure (e.g., at a second pressure P2 greater than the first pressure P1). The intermediate flow of the working fluid is ƒ. i The flow enters the compressor 100 through the intermediate injection inlet 104C in the compressor housing 102. This flow... i It can also be called economizer jet, intermediate jet flow, or economizer jet flow. The intermediate jet working fluid flows in ƒ... i The intermediate pressure can be a liquid working fluid at a relatively high pressure or a working fluid at an intermediate pressure (e.g., at a third pressure P3, which is greater than the first pressure P1 and less than the second pressure P2). For example, a working fluid at an intermediate pressure can be a gaseous working fluid at an intermediate pressure or a mixed-phase liquid and vapor working fluid at an intermediate pressure.

[0028] In one example, the intermediate-pressure working fluid is at an intermediate pressure. In one embodiment, the intermediate-pressure working fluid is a gaseous working fluid. In another embodiment, the intermediate-pressure working fluid can be a liquid working fluid or a mixed-phase liquid and vapor working fluid. For example, the intermediate-pressure working fluid is from the expander (e.g., in the refrigerant circuit of compressor 100). Figure 1 The second expander 32) in the compressor 100 supplies intermediate-pressure working fluid to the intermediate injection inlet 104C. For example, the flow ƒ i The intermediate injection working fluid is the discharge flow ƒ D A portion of the compressed working fluid in the compressor 100, which is in the condenser (e.g., in the refrigerant circuit of the compressor 100). Figure 1 The refrigerant is cooled in the condenser 20 and then expanded by the expander in the refrigerant circuit of the compressor 100. For example, the suction flow ƒ S The relatively low-pressure working fluid in the discharge stream is a different portion of the working fluid supplied to the suction port 104A, which, after being cooled in its condenser, is discharged by different expanders (e.g., in the refrigerant circuit). Figure 1 The first expander 30 in the compressor 100 further or separately expands the refrigerant, and then expands it in the evaporator (e.g., in the refrigerant circuit of the compressor 100). Figure 1 Heated in the evaporator 50).

[0029] In one example, the intermediate injection working fluid can be a liquid working fluid at a relatively high pressure. For example, the liquid intermediate injection working fluid is part of a liquid working fluid supplied from a condenser in the refrigerant circuit of compressor 100 (e.g., directly from the condenser or as a liquid working fluid flowing from the condenser to the expander), such as a condenser. Figure 1 The condenser 20 in the middle, wherein the second expander 32 is omitted. For example, flow ƒ i The intermediate injection working fluid is the condenser in the refrigerant circuit of compressor 100 (e.g., Figure 1 After being cooled in the condenser 20) and by the expander (e.g., Figure 1 The expander 30) discharge flow before expansion ƒ D It is a part of the compressed working fluid. For example, the suction flow ƒ S The relatively low-pressure working fluid in the discharge flow is ƒ D Different portions of the working fluid in the refrigerant circuit, after being cooled in the condenser, are then transported by an expander (e.g., in the refrigerant circuit). Figure 1 The expander 30 in the compressor 100 expands, and then expands in the evaporator (e.g., in the refrigerant circuit of the compressor 100). Figure 1 Heated in the evaporator 50).

[0030] Figure 3 According to one embodiment Figure 2 The scroll compressor 100 shown is a cross-sectional view. Figure 3 The view in is as follows Figure 2 The vertical sectional view of the scroll compressor 100 shown. Figure 3 Dashed arrows are provided to indicate the flow of working fluid into, within, and out of the scroll compressor 100. As described above, the suction flow ƒ S The lower-pressure working fluid (i.e., the working fluid to be compressed) flows into the scroll compressor 100 through the suction port 104A and the discharge port 104A. D The higher pressure (compressed) working fluid is discharged from the compressor 100 through the outlet 104B, and the jet stream ƒ i The intermediate working fluid flows into the compressor 100 through the intermediate injection inlet 104C.

[0031] The compressor 100 shown is a single-stage scroll compressor. More specifically, the compressor 100 shown is a single-stage vertical scroll compressor. Those skilled in the art will understand that the principles described herein are not limited to single-stage scroll compressors and can be applied to multi-stage scroll compressors with two or more compression stages. The embodiments described herein are applicable to compressors with vertical or near-vertical crankshafts (e.g., such as…). Figure 3 (As shown). In other embodiments, the concept of compressor 100 described herein can be applied to and / or adapted to compressors having non-vertical or non-horizontal crankshafts. In such embodiments, it should be understood that relative spatial terms used herein, such as, but not limited to, “upper,” “lower,” “vertical,” and “horizontal,” should be interpreted as the compressor being configured with its crankshaft in a vertical position.

[0032] The compressor housing 102 of the scroll compressor 100 includes an upper portion 102A, a middle portion 102B, and a lower portion 102C. For example... Figure 3 As shown, the suction inlet 104A extends through the lower portion 102C of the compressor housing 102. The intermediate injection inlet 104C is located in the lower portion 102C of the compressor housing 102. The discharge outlet 104B is located in the upper portion 102A of the compressor housing 102. Figure 3 As shown, the upper portion 102A may be a cover (e.g., a top cover) of the compressor housing 102, and the middle portion 102B is an intermediate cover of the scroll compressor 100. In other embodiments, the compressor housing 102 may not have the middle portion 102B. In such embodiments, the upper portion 102A may be attached to the lower portion 102C in a manner similar to the middle portion 102B. In some embodiments, the intermediate injection inlet 104C may extend through the middle portion 102B of the compressor housing 102, rather than the lower portion 102C.

[0033] In the illustrated embodiment, the upper portion 102A is the uppermost portion of the compressor housing 102, and the lower portion 102C is the lowermost portion of the compressor housing 102. In other embodiments, the upper portion 102A may not be the uppermost portion of the compressor housing 102, and / or the lower portion 102C may not be the lowermost portion of the compressor housing 102.

[0034] The scroll compressor 100 includes a non-track-moving scroll component 112 and a track-moving scroll component 114. Applying known aspects of scroll compressor compression, the scroll compressor 100 utilizes the interlocking of the two scroll components 112 and 114 to form a plurality of compression chambers 116 in which gas is captured and compressed. The non-track-moving scroll component 112 has a base plate 113 and a helical winding portion 118 protruding from the base plate 113 toward the track-moving scroll component 114. The track-moving scroll component 114 has a base plate 115 and a helical winding portion 120 protruding from the base plate 115 toward the non-track-moving scroll component 112. The helical winding portion 118 of the non-track-moving scroll component 112 and the helical winding portion 120 of the track-moving scroll component 114 interlock to form compression chambers 116 between them. In one embodiment, the axial end of one or both of the spiral wound portions 118, 120 may include a tip seal (not shown) to help facilitate a seal between each spiral wound portion 118, 120 and the opposing substrate 113, 115.

[0035] The non-track-moving scroll component 112 is a scroll component fixed in position within the compressor housing 102 and configured not to move relative to the compressor housing 102 during operation of the scroll compressor 100 (e.g., track movement, rotation). The non-track-moving scroll component 112 may be referred to as a non-track-moving scroll component, a fixed scroll component, a stationary scroll component, a first scroll component, etc. In one embodiment, the non-track-moving scroll component 112 may be directly attached to the compressor housing 102 of the scroll compressor 100. For example, the non-track-moving scroll component 112 may be interference-fitted into and / or fixed (e.g., by bolting, etc.) to the compressor housing 102.

[0036] The orbital motion scroll member 114 is a scroll member that engages with the end of the crankshaft 160. During operation of the scroll compressor 100, the orbital motion scroll member 114 moves relative to the non-orbital motion scroll member 112 (e.g., orbital motion, rotation). The orbital motion scroll member 114 is configured to move relative to the compressor housing 102 during operation of the compressor 100. The orbital motion scroll member 114 may also be referred to as an orbital motion scroll member, a moving scroll member, a second scroll member, etc.

[0037] The orbital motion scroll member 114 moves (e.g., orbital motion, rotation) via the crankshaft 160. Rotation of the crankshaft 160 causes the orbital motion scroll member 114 to move because the orbital motion scroll member 114 engages with the end of the crankshaft 160. The crankshaft 160 can be rotated by, for example, an electric motor 162. The electric motor 162 includes a rotor and a stator. The rotor and crankshaft 160 are fixed together such that they rotate together (e.g., the rotor and crankshaft 160 can be fixed together by an interference fit or other type of fit). The electric motor 162 can rotate the crankshaft 160 using known principles. In one embodiment, the crankshaft 160 can be rotated by other mechanisms, such as an external electric motor, an external internal combustion engine, or other such mechanisms. Therefore, such embodiments may not include... Figure 3 The electric motor 162 is shown. The scroll compressor 100 may include an alignment coupling, such as an Oldham coupling 164, for keeping the meshing scroll components 112, 114 aligned.

[0038] The compressor 100 includes a scroll support 130 attached to a compressor housing 102. The scroll support 130 supports one or more scroll components 112, 114. In the illustrated embodiment, the scroll support 130 supports a non-track-moving scroll component 112 and a track-moving scroll component 114 within the compressor housing 102. For example, the non-track-moving scroll component 112 abuts against the scroll support 130 (e.g., the non-track-moving scroll component 112 is disposed on the support 130). The scroll support 130 axially supports the non-track-moving scroll component 112 within the compressor housing 102 (e.g., in a support direction D1). For example, the scroll support 130 may provide a bearing and / or bearing surface to support the track-moving scroll component 114. The scroll support 130 may provide a thrust bearing to axially support the track-moving scroll component 114 (e.g., including a thrust bearing surface forming a thrust bearing located between the track-moving scroll component 114 and the scroll support 130). The scroll support 130 may provide a radial bearing to radially support the track-moving scroll component 114 via the crankshaft 160 (e.g., including a radial bearing surface forming a radial bearing located between the scroll support 130 and the crankshaft 160, to which the track-moving scroll component 114 is attached). The scroll support may also be referred to as a bearing support.

[0039] The compressor housing 102 includes an internal volume comprising an intake chamber 140 and a discharge chamber 142 of the compressor 100. The discharge chamber 142 and the intake chamber 140 are at different pressures. For example, the intake chamber 140 is at an intake pressure (e.g., a first pressure P1), and the discharge chamber 142 is at a discharge pressure (e.g., a second pressure P2).

[0040] The discharge chamber 142 is disposed between the compressor housing 102 and the non-track moving scroll member 112 (e.g., between the upper portion 102A of the compressor housing 102 and the non-track moving scroll member 112). Figure 3 As shown, the discharge chamber 142 is a volume defined by the compressor housing 102 and the non-track moving scroll member 112 (e.g., defined by the upper portion 102A of the compressor housing 102, the middle portion 102B of the compressor housing 102, and the non-track moving scroll member 112). The discharge chamber 142 may also be referred to as the upper volume of the compressor 100.

[0041] The suction chamber 140 is disposed between the compressor housing 102 and the non-track moving scroll member 112 (e.g., between the lower portion 102C of the compressor housing 102 and the non-track moving scroll member 112). The suction chamber 140 and the discharge chamber 142 are disposed opposite to the non-track moving scroll member 112. For example, the suction chamber 140 and the discharge chamber 142 are disposed on opposite sides of the non-track moving scroll member 112. As illustrated in the example embodiment, the discharge chamber 142 and the suction chamber 140 are fluidly separated by the non-track moving scroll member 112. The discharge chamber 142 and the suction chamber 140 may also be separated by the middle portion 102B of the compressor housing 102. Figure 3 As shown, the suction chamber 140 is a volume defined by the compressor housing 102 and the non-track moving scroll member 112 (e.g., defined by the lower portion 102C of the compressor housing 102 and the non-track moving scroll member 112). The suction chamber 140 may also be referred to as the lower portion volume of the compressor 100.

[0042] like Figure 3 As shown, the meshing vortex components 112 and 114 have inlets 124 through which gas flows into the meshing vortex components 112 and 114. Inlets 124 are formed at / at the outer radius of the helical winding portions 118 and 120 (e.g., at the outermost helix of each helical winding portion 118 and 120, at the beginning of the compression process, not in the middle position / compression chamber, etc.). For example, inlet 124 is located at the position where the compression chamber 116 is initially formed.

[0043] The intermeshing helical windings 118 and 120 also have an outlet 122. Outlet 122 is a port that allows compressed gas to flow out from between the intermeshing helical windings 118 and 120. As illustrated in the example embodiment, outlet 122 is formed in the substrate 113 of the non-track-moving scroll component. For example, outlet 122 is located near the axial center of the intermeshing helical windings 118 and 120 (e.g., near the ends of the intermeshing helical windings 118 and 120). Outlet 122 is fluidly connected to the discharge chamber 142 of the scroll compressor 100. The compressor 100 may include valves (e.g., check valves, valve plates, etc.) to regulate the flow of pressurized gas through outlet 122.

[0044] The non-orbital motion vortex component 112 includes at least one intermediate injection port 150 formed therein. The intermediate injection port 150 is configured to inject / guide intermediate working fluid (i.e., in the flow ƒ) i The intermediate injection port is located between the intermeshing vortex components 112 and 114. Specifically, the intermediate injection port is used to inject intermediate working fluid into the compression chamber 116 of the intermeshing vortex components 112 and 114. The intermediate injection port 150 is configured to inject into the intermediate compression chamber 117 of the compression chamber 116. Each intermediate injection port 150 is an opening formed in the non-track-moving vortex component 112 located at the compression chamber 116.

[0045] Intermediate compression chamber 117 is one of compression chambers 116, and it has undergone a partial compression process (e.g., a pressure between inlet pressure P1 and outlet pressure P2, having traveled a portion and located intermediately between inlet 124 and outlet 122). Intermediate injection working fluid is added to the working fluid already present in intermediate compression chamber 117 and then further compressed (e.g., to outlet pressure P2). When the injection working fluid contains liquid working fluid, the liquid working fluid may experience a pressure drop upon injection into intermediate compression chamber 117 (e.g., when it flows into intermediate compression chamber 117, it is at a relatively low pressure). This pressure drop may cause the working fluid to evaporate, thereby providing cooling.

[0046] In certain embodiments, one or more specific locations of one or more intermediate injection ports 150 can vary depending on desired effects (e.g., based on a balance of system capacity, compressor efficiency, and / or compressor cooling). In one embodiment, the intermediate injection port 150 may be located relatively close to the intermediate compression chamber 117 at the intake pressure (e.g., at the beginning of compression). In another embodiment, the intermediate injection port 150 may be located relatively close to the intermediate compression chamber 117 at the discharge pressure (e.g., near the end of compression). In the illustrated embodiment, the intermediate compression chamber 117 relatively close to the intake pressure is located relatively outside the meshing scroll members 112, 114 (e.g., relatively close to inlet 124, closer to inlet 124 than outlet 122), while the intermediate compression chamber 117 relatively close to the discharge pressure is located relatively inside the meshing scroll members 112, 114 (e.g., relatively close to outlet 122, closer to outlet 124 than inlet 124). The specific location of the intermediate injection port 150 can be selected based on, for example, modeling and testing to determine the optimal location or combination thereof, of expected efficiency and capacity variations.

[0047] The compressor 100 includes an injection conduit 152 extending from the intermediate injection inlet 104C to the intermediate injection port 150. The injection conduit 152 will be discussed in detail below.

[0048] As the working fluid travels between the meshing scroll components 112 and 114, it is compressed by the meshing scroll components 112 and 114. The compressed working fluid flows from outlet 122 of the meshing scroll components 112 and 114 to outlet 104B of the scroll compressor 100. The working fluid enters the meshing scroll components 112 and 114 at a relatively low pressure (e.g., at the suction pressure, at a first pressure P1) and exits the meshing scroll components 112 and 114 at a relatively high pressure (e.g., at the discharge pressure, at a second pressure P2). Intermediate working fluid also flows into the meshing scroll components 112 and 114 at a relatively high pressure or intermediate pressure (e.g., between the suction pressure and the discharge pressure, at a third pressure P3), mixes with the partially compressed suction working fluid, and is discharged as part of the compressed working fluid.

[0049] The suction inlet 104A is connected to the inlet 124 of the meshing vortex components 112 and 114. The working fluid is drawn into the inlet ƒ. S The fluid flows from the suction inlet 104A into the inlet 124 of the meshing vortex components 112 and 114. For example... Figure 3As shown, the suction chamber 140 is fluidly connected to the suction port 104A to the inlet 124 of the meshing vortex components 112, 114. For example, the suction port 104A is fluidly connected to the suction chamber 140, and the suction chamber 140 is fluidly connected to the inlet 124 of the meshing vortex components 112, 114. The suction chamber 140 is in the suction flow ƒ S The intake / inlet pressure (e.g., the working fluid in the intake chamber 140 is in the intake flow ƒ) S (Inlet / outlet pressure). The meshing vortex components 112, 114 are configured to draw in working fluid from the intake chamber 140. In one embodiment, the intake port 104A may be directly connected to the inlet 124 of the meshing vortex components 112, 114 (e.g., without the intake chamber 140).

[0050] The outlet 104B is connected to the outlet 122 of the meshing vortex components 112 and 114. The compressed working fluid is discharged from the outlet ƒ. D The fluid flows from the outlet 122 of the meshing scroll components 112 and 114 to the discharge outlet 104B of the compressor 100. For example... Figure 3 As shown, the discharge chamber 142 is fluidly connected from the outlet 122 of the meshing scroll members 112, 114 to the discharge port 104B of the compressor 100. For example, the outlet 122 of the meshing scroll members 112, 114 is fluidly connected to the discharge chamber 142, and the discharge chamber 142 is fluidly connected to the discharge port 104B of the compressor 100. Compressed working fluid flows from the meshing scroll members 112, 114 through the discharge chamber 142 to the discharge port 104B of the compressor 100. The discharge chamber 142 is at discharge pressure (e.g., the working fluid in the discharge chamber 142 is at discharge flow rate ƒ). D (Discharge pressure). In one embodiment, the outlet 122 of the meshing vortex components 112, 114 can be directly connected to the discharge port 104B (e.g., without discharge chamber 142).

[0051] Figure 4 yes Figure 2 The partial cross-sectional view of the compressor 100 shown is based on one embodiment. For example, Figure 4 yes Figure 3 The magnified portion of the middle view. Figure 4 In the view, the dashed line represents the cut-off section of compressor 100. Figure 4 The dashed arrows provided in the diagram illustrate the flow of the intermediate injection working fluid into and into the internal compressor 100.

[0052] like Figure 4As shown, the injection conduit 152 extends from the intermediate injection inlet 104C to the intermediate injection port 150. The injection conduit 152 connects the intermediate injection port 150 to the intermediate injection port 150. The intermediate working fluid (e.g., flow ƒ) i The jet is guided through jet conduit 152 to compression chamber 116 (e.g., to intermediate compression chamber 117). Jet conduit 152 will be discussed in detail below.

[0053] Support member 130 is attached to compressor housing 102. In the illustrated embodiment, support member 130 is interference-fitted to compressor housing 102. The interference fit between support member 130 and compressor housing 102 extends along the intermediate injection inlet 104C. Figure 4 As shown, the support member 130 may include a flange 132. The flange 132 is disposed on the outer side of the support member (e.g., on the outer circumference of the support member 130). The flange 132 is disposed on the compressor housing 102. For example, the flange 132 is disposed on a boss 106 of the compressor housing 102. In particular, the flange 132 is disposed on the boss 106 of the lower portion 102C of the compressor housing 102 (e.g., the top surface of the lower portion 102C). The middle portion 102B is disposed on the non-track moving scroll member 112, wherein the flange 132 is sandwiched between the lower portion 102C and the middle portion 102B of the compressor housing 102. For example, additionally or alternatively, the support member 130 may be attached to the compressor housing 102 by means of the flange 132 of the support member 130 sandwiched between the two portions 102A, 102C of the compressor housing 102.

[0054] The support member 130 includes a side surface 134 and a top surface 138. The top surface 138 of the support member 130 abuts against the non-track-moving scroll member 112. Specifically, the top surface 138 of the support member 130 abuts against the bottom surface 128 of the non-track-moving scroll member 112 (e.g., against the bottom surface 128 of the base plate 113 of the non-track-moving scroll member 112). The side surface 134 of the support member 130 abuts against the inner surface 108 of the compressor housing 102 (e.g., against the inner surface 108 of the lower portion 102C of the compressor housing 102). For example, the side surface 134 of the support member 130 abuts against the inner surface 108 of the compressor housing 102 at the suction port 104A.

[0055] The support member 130 includes a protruding portion 136 having a side surface 134. For example... Figure 4 As shown, the protrusion 136 is provided on the outer radial side of the support 130 (for example, on the outer circumference of the support 130, extending outward radially along directions D2 and D3, as shown). Figure 3(As shown). Side surface 134 is the relatively flat top of the protrusion 136. Support 130 has a large circumference in the protrusion 136, providing an interference fit for support 130 in compressor housing 102.

[0056] like Figure 4 As shown, the injection conduit 152 extends from the intake port 104A to the intermediate injection port 150. For example, the injection conduit 152 extends from the inner surface 108 of the compressor housing 102 at the intermediate injection port 150 to the compression chamber 116 (e.g., to the position corresponding to the intermediate compression chamber 117).

[0057] The injection conduit 152 extends through the support 130 and the non-track-moving vortex component 112. In the illustrated embodiment, the injection conduit 152 is formed by a plurality of through holes. Figure 4 As shown, the injection conduit 152 may include a through-hole in the support member 130 and a through-hole in the non-track-motion vortex member 112. The injection conduit 152 includes a first portion 154A and a second portion 154B. For example, the first portion 154A may be a through-hole in the support member 130. For example, the injection conduit 152 may be a through-hole in the non-track-motion vortex member 112. The first portion 154A of the injection conduit 152 extends from the suction port 104A to the second portion 154B, and the second portion 154B of the injection conduit 152 extends from the first portion 154A to the intermediate injection port 150. The first portion 154A is configured to receive intermediate working fluid (e.g., flow ƒ) from the intermediate injection inlet 104C. i The intermediate working fluid is directed to the second part 154B. The second part 154B is configured to receive the intermediate working fluid (e.g., flow ƒ) from the first part 154A. i The intermediate working fluid is then directed to the second part 154B. The first part 154A is the inlet portion of the injection conduit 152, and the second part 154B is the outlet portion of the injection conduit 152.

[0058] The first portion 154A of the injection conduit 152 extends through the support member 130. The first portion 154A extends from the intake port 104A to the non-track-moving vortex component 112. (As shown...) Figure 4As shown, the first portion 154A may include a first end opening 156A and a second end opening 158A opposite to the first end opening 156A (e.g., an inlet end opening and an outlet end opening). The first end opening 156A and the second end opening 158A of the first portion 154A are openings in the support member 130 (e.g., opposite end openings of a through hole in the support member 130). The first end opening 156A is formed in the side surface 134 of the support member 130. The second end opening 158A is an opening formed in the upper surface 138 of the support member 130. The first end opening 156A faces the inner surface 108 of the compressor housing 102 and overlaps with the intermediate injection inlet 104C formed in the inner surface 108 of the compressor housing 102. The second end opening 158A faces the non-track motion vortex member 112 (e.g., facing the bottom surface 128 of the non-track motion vortex member 112). The second end opening 158A of the first part 154A of the jet conduit 152 overlaps with the second part 154B of the jet conduit 152.

[0059] The injection conduit 152 extends from the side surface 134 (e.g., the top surface of the protrusion 136) of the support 130. The protrusion 136 provides an interference fit between the side surface 134 of the support 130 and the inner surface 108 of the compressor housing 102. The side surface 134 is a flat surface having a first end opening 156A (e.g., a flat surface except for the first end opening 156A). The inner surface 108 of the compressor housing 102 is a flat surface at the intermediate injection inlet 104C, having an opening of the intermediate injection inlet 104C (e.g., a flat surface except for the opening of the intermediate injection inlet 104C). The interference fit presses the flat side surface 134 of the support 130 against the flat inner surface 108 of the compressor housing 102, forming a seal between the side surface 134 of the support 130 and the inner surface 108 of the compressor housing 102. The first end opening 156A of the injection conduit 152 is an opening on the top surface of the protrusion 136, which prevents the seal from leaking (e.g., into the suction chamber 140) as the working fluid flows into the injection conduit 152 from the intermediate injection inlet 104C.

[0060] The second portion 154B of the injection conduit 152 extends through the non-track-moving vortex component 112. The second portion 154B extends from the support 130 to the intermediate injection port 150 (e.g., from the support 130 to the intermediate compression chamber 117). Figure 4As shown, the second portion 154B may include a first end opening 156B and a second end opening 158B opposite to the first end opening 156B (e.g., an inlet end opening and an outlet end opening). The first end opening 156B and the second end opening 158B of the second portion 154B are openings in the non-track motion vortex member 112 (e.g., opposite end openings of through holes in the non-track motion vortex member 112). The first end opening 156B is formed in the bottom surface 128 of the non-track motion vortex member 112. The first end opening 156B of the second portion 154B overlaps with the first portion 154A of the injection conduit 152. Specifically, the first end opening 156B of the second portion 154B overlaps with the second end opening 158B of the first portion 154A. The second end opening 158B is the opening of the intermediate injection port 150. The second end opening 158B is formed between adjacent turns of the helical winding portion 118 of the non-track motion vortex member 112. The first end opening 156B of the second part 154B faces the upper surface 138 of the support 130 and overlaps with the second end opening 158A of the first part 154A (e.g., the first end opening 156A of the first part 154A). The second end opening 158A faces the compression cavity 116 (e.g., the intermediate compression cavity 117, the track motion vortex component 114).

[0061] The terminology used herein is intended to describe particular embodiments and is not intended to be limiting. Unless expressly stated otherwise, the terms “a,” “an,” and “the” include the plural forms. The terms “comprising” and / or “including”, as used in this specification, specify the presence of said features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, and / or components. In one embodiment, “connection” and “linkage” as used herein may refer to “direct connection” and “direct linking.” In one embodiment, “attachment” and “fixation” as used herein may refer to “direct attachment” and “direct fixation,” respectively.

[0062] Regarding the foregoing description, it should be understood that changes may be made in details, particularly in terms of the shape, size, and arrangement of the construction materials and components used, without departing from the scope of this invention. This specification and the described embodiments are merely exemplary, and the true scope and spirit of this invention are indicated by the appended claims.

Claims

1. A scroll compressor, comprising: Compressor housing; The suction inlet, intermediate injection inlet, and discharge outlet are respectively disposed in the compressor housing; A track-motion scroll component and a non-track-motion scroll component mesh with each other to form a compression chamber within the compressor housing, the compression chamber being configured to draw in from the intake port and discharge from the outlet port, the non-track-motion scroll component including an intermediate injection port for the compression chamber; A vortex support member, which is attached to the compressor housing at the intermediate injection inlet; and An injection duct extends from the intermediate injection inlet in the compressor housing, through the vortex support, and through the non-track moving vortex component to the intermediate injection port.

2. The scroll compressor of claim 1, wherein The vortex support component includes: The side surface, which abuts against the inner surface of the compressor housing at the intermediate injection inlet, and The upper surface abuts against the lower surface of the non-track-moving vortex component.

3. The scroll compressor of claim 2, wherein The jet conduit extends from the side surface of the vortex support, through the vortex support, to the upper surface of the vortex support.

4. The scroll compressor of claim 1, wherein The vortex support component includes: A side surface that abuts against the inner surface of the compressor housing at the intermediate injection inlet, the injection conduit extending from the side surface into the vortex support. The protruding portion, having the side surface, and the interference fit between the protruding portion of the vortex support and the inner surface of the compressor housing at the intermediate injection inlet form a seal between the vortex support and the compressor housing.

5. The scroll compressor of claim 1, wherein The compressor housing includes an upper part and a lower part, and the intermediate injection inlet is disposed in the lower part of the compressor housing.

6. The scroll compressor of claim 1, wherein The jet conduit includes: The first portion, extending through the vortex support, extends from the intermediate injection inlet in the compressor housing, and The second part extends through the non-orbital motion vortex component, extending from the first part of the injection duct to the intermediate injection port, and the intermediate injection port is the outlet of the second part of the injection duct.

7. The scroll compressor according to claim 6, characterized in that, The first part of the jet conduit is a through hole in the vortex support, and The second part of the jet conduit is a through hole in the non-track motion vortex component.

8. The scroll compressor according to claim 7, characterized in that, The first portion of the injection duct has a first end opening and a second end opening, wherein the first end opening abuts against the inner surface of the compressor housing at the intermediate injection inlet, and the second end opening abuts against the non-track-moving vortex component. The second portion of the injection conduit has a first end opening and a second end opening, wherein the first end opening abuts against the upper surface of the vortex support, and the second end opening forms the intermediate injection port and is configured to be positioned above one or more of the compression chambers.

9. The scroll compressor of claim 8, wherein, The second end opening of the first part overlaps with the first end opening of the second part.

10. The scroll compressor of claim 8, wherein, The first end opening of the first part overlaps with the intermediate injection inlet.

11. A heating, ventilation, air conditioning and refrigeration system, comprising: A refrigerant circuit comprising a condenser, at least one expander, an evaporator, and a scroll compressor in fluid connection, wherein a working fluid flows through the refrigerant circuit, and wherein the scroll compressor comprises: Compressor housing; The suction inlet, intermediate injection inlet, and discharge outlet are respectively disposed in the compressor housing; A track-moving scroll component and a non-track-moving scroll component mesh with each other to form a compression chamber within the compressor housing, the compression chamber being configured to draw in from the intake port and discharge from the outlet port, the non-track-moving scroll component including an intermediate injection port for the compression chamber; A vortex support member, which is attached to the compressor at the intermediate injection inlet; and An injection duct extends from the intermediate injection inlet in the compressor housing, through the vortex support, and through the non-track moving vortex component to the intermediate injection port.

12. The heating, ventilation, air conditioning, and refrigeration system of claim 11, wherein, The vortex support component includes: The side surface, which abuts against the inner surface of the compressor housing at the intermediate injection inlet, and The upper surface abuts against the lower surface of the non-track-moving vortex component.

13. The heating, ventilation, air conditioning, and refrigeration system of claim 12, wherein, The jet conduit extends from the side surface of the vortex support, through the vortex support, to the upper surface of the vortex support.

14. The heating, ventilation, air conditioning, and refrigeration system of claim 13, wherein, The vortex support component includes: A side surface that abuts against the inner surface of the compressor housing at the intermediate injection inlet, the injection conduit extending from the side surface into the vortex support. The protruding portion, having the side surface, and the interference fit between the protruding portion of the vortex support and the inner surface of the compressor housing at the intermediate injection inlet form a seal between the vortex support and the compressor housing.

15. The heating, ventilation, air conditioning, and refrigeration system according to claim 11, characterized in that, The compressor housing includes an upper part and a lower part, and the intermediate injection inlet is located in the lower part of the compressor housing.

16. The heating, ventilation, air conditioning, and refrigeration system of claim 11, wherein, The jet conduit includes: The first portion, extending through the vortex support, extends from the intermediate injection inlet in the compressor housing, and The second part extends through the non-orbital motion vortex component, extending from the first part of the injection duct to the intermediate injection port, which is the outlet of the second part of the injection duct.

17. The heating, ventilation, air conditioning, and refrigeration system according to claim 16, characterized in that, The first part of the jet conduit is a through hole in the vortex support, and The second part of the jet conduit is a through hole in the non-track motion vortex component.

18. The heating, ventilation, air conditioning, and refrigeration system according to claim 17, characterized in that, The first portion of the injection duct has a first end opening and a second end opening, wherein the first end opening abuts against the inner surface of the compressor housing at the intermediate injection inlet, and the second end opening abuts against the non-track-moving vortex component. The second portion of the injection conduit has a first end opening and a second end opening, wherein the first end opening abuts against the upper surface of the vortex support, and the second end opening forms the intermediate injection port and is configured to be positioned above one or more of the compression chambers.

19. The heating, ventilation, air conditioning, and refrigeration system of claim 18, wherein, The second end opening of the first part overlaps with the first end opening of the second part.

20. The heating, ventilation, air conditioning, and refrigeration system of claim 18, wherein, The first end opening of the first part overlaps with the intermediate injection inlet.

21. The heating, ventilation, air conditioning and refrigeration system according to claim 11, characterized in that, The inlet is configured to receive a flow of the working fluid from the evaporator. The intermediate injection inlet is configured to receive an intermediate jet stream of the working fluid between the condenser and the evaporator, and The compression chamber is configured to compress the working fluid in the intermediate jet stream and the intake stream into a working fluid discharge stream, which is discharged from the compressor via the outlet.

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