Rolling piston type rotary compressor

Abstract

The apparatus includes a semi-hermetic compressor housing, an electrically operated dual-cylinder rolling piston rotary compressor assembly housed within the housing, electric motor driver electronics, and an auxiliary housing. The auxiliary housing defines a semi-hermetic refrigerant inlet compartment having a wall. The auxiliary housing also defines an electronics compartment sharing a wall with the inlet compartment but semi-hermetically separated from the inlet compartment. The compressor housing is semi-hermetically coupled to and in fluid communication with the inlet compartment. The electronics compartment houses the electronics.

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the benefit of priority to U.S. Provisional Patent Application No. 63 / 438,769, filed on January 12, 2023, and to U.S. Provisional Patent Application No. 63 / 355,611, filed on June 26, 2022, each of which is incorporated herein by reference.

[0002] Various embodiments herein relate to positive displacement compressors, and more particularly to semi - hermetic motor - driven rolling piston rotary compressors for compressing refrigerants in air conditioning, cooling, heat pump, and / or other cooling and / or heating systems for electric vehicles, internal combustion engine vehicles, aircraft, marine vessels, buildings, manufacturing systems, and / or other suitable applications.

Background Art

[0003] To mitigate climate change, historical paradigms need to be rethought. While rotary scroll compressors typically outperform comparable rolling piston rotary compressors within a narrow range of load conditions, the increasing number of cooling and heating applications reveals a relatively wide range of dynamic load conditions, making the advantages of rolling piston rotary compressors more favorable. For example, in internal combustion engine ("ICE") vehicles, scroll compressors are typically used in the heating, ventilation, and air conditioning ("HVAC") systems of the vehicle's driver's / occupant's compartment. However, conventional ICE vehicles typically require considerable power to operate the HVAC system (which has a fairly small and constant compressor load). Furthermore, ICE vehicles typically require little additional cooling. Electric vehicles, on the other hand, have increased needs for battery cooling and brake cooling, and in addition to conventional driver's / occupant's compartment HVAC, there is a growing demand for thermal management of various drivetrain-related air and / or liquid heat exchange systems. Such additional loads can be far more dynamic than those of conventional HVAC systems.

[0004] There is a need for suitable rolling piston rotary compressors to reduce overall HVAC power consumption, meet various battery cooling, brake cooling, and / or other electric vehicle cooling needs, and ultimately produce more efficient (longer-range) electric vehicles. In addition to supporting cooling systems, rolling piston compressors can typically act as heating pumps, supplying heat more efficiently than conventional resistance heating elements. As electric vehicle technology continues to advance and the number of electric vehicles on the road increases, the need (and potential benefits) of efficient rolling piston rotary compressors continues to grow. [Overview of the project]

[0005] In some embodiments, the apparatus includes a semi-enclosed compressor housing, an electrically operated double-cylinder rolling-piston rotary compressor assembly housed within the housing, electric motor driver electronics, and an auxiliary housing. The auxiliary housing defines a semi-enclosed refrigerant inlet compartment with walls. The auxiliary housing also defines an electronics compartment that shares walls with the inlet compartment but is semi-enclosed from the inlet compartment. The compressor housing is semi-enclosed and connected to the inlet compartment, and is in fluid communication with the inlet compartment. The electronics compartment houses the electronics.

[0006] In some embodiments, the apparatus includes rollers for a first rolling piston rotary compressor, rollers for a second rolling piston rotary compressor, a substantially hollow camshaft arranged to cooperate with the first and second rollers, an Archimedes screw, and a flexible coupling mechanically connected to the camshaft internally. The flexible coupling has a first end extending from the camshaft in a first direction, a second end extending in a second direction and engaging with the Archimedes screw, and an intermediate portion extending between the first and second ends and bending from the first direction to the second direction.

[0007] In some embodiments, the apparatus includes rollers of a first rolling piston rotary compressor, rollers of a second rolling piston rotary compressor, a camshaft arranged to cooperate with the first and second rollers, and an electric motor including a rotor. The rotor is mechanically connected to the camshaft and includes a first end and a second end. The rotor is substantially cylindrical between the first and second ends. A first substantially disc-shaped counterweight is attached to the first end of the rotor. The first counterweight has a first substantially C-shaped portion extending therefrom. A second substantially disc-shaped counterweight is attached to the second end of the rotor. The second counterweight has a second substantially C-shaped portion extending therefrom. The second substantially C-shaped portion is rotated approximately 180 degrees relative to the first substantially C-shaped portion and is positioned on the second end of the rotor. A first substantially disc-shaped cap is attached to the first counterweight. The first cap has a third substantially C-shaped portion extending from it. The third substantially C-shaped portion is rotated approximately 180 degrees relative to the first substantially C-shaped portion and faces the first counterweight. The second substantially disc-shaped cap is attached to the second counterweight. The second cap has a fourth substantially C-shaped portion extending from it. The fourth substantially C-shaped portion is rotated approximately 180 degrees relative to the second substantially C-shaped portion and faces the second counterweight.

[0008] In some embodiments, the apparatus includes a semi-enclosed compressor housing and a pair of rolling piston rotary compressor cylinders housed within the housing, the pair of rolling piston rotary compressor cylinders including a first rolling piston rotary compressor cylinder and a second rolling piston rotary compressor cylinder. The discharge valves of the pair of compressor cylinders include a first valve mechanically coupled to the first cylinder and a second valve mechanically coupled to the second cylinder. A pair of plates are interposed between the first cylinder and the second cylinder. The plates include a first plate, which defines a first recess. The plates include a second plate, which faces the first plate and defines a second recess. The first and second recesses together define a first acoustic muffler chamber. Valves are arranged to control the refrigerant flow from the first and second cylinders to the first chamber.

[0009] In some embodiments, the apparatus includes a semi-enclosed compressor housing and a pair of rolling piston rotary compressor cylinders housed within the housing, the first rolling piston rotary compressor cylinder and the second rolling piston rotary compressor cylinder. The discharge valves of the pair of compressor cylinders include a first valve mechanically coupled to the first cylinder and a second valve mechanically coupled to the second cylinder. A camshaft penetrates the cylinders. The camshaft has a drive side and a non-drive side. A drive-side bearing supports the drive side of the camshaft. A first drive-side plate is located on the drive side of the bearing and defines a first acoustic muffler chamber having a pair of refrigerant flow holes inside. The holes include a first hole extending around each of the first axes and a second hole extending around each of the second axes. The second drive-side plate is positioned on the drive side of the first plate and defines a second acoustic muffler chamber having a discharge port for the first refrigerant inside. The first discharge port extends around each of the third axes. Valves are positioned to control the refrigerant flow from the first and second cylinders to the first chamber. The second chamber is in fluid communication with the first chamber, but neither the first nor the second axis is aligned with the third axis.

[0010] It will be understood that the various embodiments described in this summary section and other parts of this application may be represented as a number of different combinations and partial combinations. All such beneficial, novel, and inventive combinations and partial combinations are intended herein, and it is not necessary to express each of these combinations explicitly. [Brief explanation of the drawing]

[0011] Some of the figures disclosed herein may include dimensions. Furthermore, the figures disclosed herein may be generated from scale drawings, scale models, or scaleable photographs. It will be understood that such dimensions or relative scales in the figures are illustrative and should not be interpreted restrictively unless otherwise stated in the claims. It will also be understood by those skilled in the art that computer-aided design ("CAD") renderings may include lines relating to changes in surface shape and not necessarily relating to the characteristics of the constituent elements.

[0012] [Figure 1] Figure 1 shows an upper front left perspective view of a semi-enclosed compressor according to an embodiment of the present disclosure. [Figure 2] Figure 2 shows a partially exploded view of the semi-closed compressor in Figure 1, viewed from the upper front left at an oblique angle. [Figure 3] Figure 3 shows a partially exploded view of the electric double-cylinder rolling piston rotary compressor assembly shown in Figure 2, viewed from the upper front left perspective. [Figure 4] Figure 4 shows an exploded view of the double-cylinder rolling piston rotary compressor assembly from Figure 3, in an upper front left perspective. [Figure 5] Figure 5 shows an exploded view of the double-cylinder rolling piston rotary compressor assembly from Figure 4, in an upper rear right perspective. [Figure 6] Figure 6 shows a vertical cross-sectional view of the semi-closed compressor in Figure 1, in the direction of line 59-59 in Figure 1. [Figure 7] Figure 7 shows a vertical cross-sectional view of the semi-closed compressor in Figure 1, in the direction of line 61-61 in Figure 1. [Figure 8] Figure 8 shows an enlarged vertical cross-sectional view of the semi-sealed coupling of the semi-sealed compressor housing to the auxiliary housing, taken from Figure 7. [Figure 9] Figure 9 shows a perspective view of the chamfered shim of the semi-sealed coupling in Figure 8. [Figure 10] Figure 10 shows a vertical cross-sectional view of an alternative semi-closed compressor according to an embodiment of the present disclosure, in the same direction as the line 61-61 in Figure 1. [Figure 11]FIG. 11 shows a top front right perspective view of the upper part of the anti-drive side of the electric double-cylinder rolling piston type rotary compressor assembly of FIG. 2. [Figure 12] FIG. 12 shows a vertical cross-sectional view of the semi-hermetic compressor of FIG. 1 in the direction of line 47-47 of FIG. 1. [Figure 13] FIG. 13 shows an enlarged vertical cross-sectional separated view of the spiral oil pump assembly of the semi-hermetic compressor of FIG. 1 cut out from FIG. 12. [Figure 14] FIG. 14 shows an enlarged perspective view of the spiral oil pump assembly of the semi-hermetic compressor of FIG. 1. [Figure 15] FIG. 15 shows an enlarged vertical cross-sectional separated view of the refrigerant discharge pipe of the semi-hermetic compressor of FIG. 1 cut out from FIG. 12. [Figure 16] FIG. 16 shows a perspective view of the refrigerant discharge pipe of the semi-hermetic compressor of FIG. 1. <000​​​​​​​​​​​​​​​​​​​​​​FIG. 24 shows a sectional view of a drive-side end portion of an alternative acoustic muffler system of an alternative semi-hermetic compressor according to an aspect of the present disclosure in the same direction as FIG. 22. DETAILED DESCRIPTION OF THE INVENTION

[0013] Here, in order to facilitate understanding of the principles of the present invention, reference is made to the embodiments shown in the drawings, and specific language is used to describe the embodiments. However, it is not intended to limit the scope of the present invention thereby, and it will be understood that changes and further modifications in the illustrated devices, as well as further uses of the illustrated principles of the present invention that would normally occur to those skilled in the art related to the present invention, can be considered. Although at least one embodiment of the present invention is described and disclosed, this application may show and / or describe other embodiments of the present invention, and further logical inferences of still other embodiments that would be understood by those skilled in the art are possible. In this specification, unless explicitly stated to be limited to one or more specific materials, any component of the present invention can be made from any one or more suitable metals, plastics, woods, fabrics, fibers, and / or combinations thereof (and / or any other suitable materials or combinations thereof) that would be understood by those skilled in the art.

[0014] Any reference to "the present invention" refers to a group of embodiments of the invention, and it is understood that there is no single embodiment that includes all devices, processes, or compositions that should be included in all embodiments without further specification. Further, although the "advantages" provided by some embodiments of the present invention may be described, it is understood that other embodiments may not include such the same advantages or may further include different advantages. Any advantages described in this specification should not be construed as a limitation to any claims. The use of words indicating preferences such as "various embodiments" or "preferred" refers to the features and aspects presented in at least one embodiment, but they are optional in some embodiments, and thus it is understood that the use of the word "preferred" implies the term "optional".

[0015] The same reference number refers to the same part throughout the specification and drawings. Additionally, the use of the N-series prefix (NXX.XX) for element numbers refers to the same element as an element without the prefix (XX.XX), except as illustrated and described. For example, element 1020.1 is identical to element 20.1, except for different features of element 1020.1 as illustrated and described. Furthermore, common features of common and related elements may be depicted identically in different figures and / or the same symbols may be used in different figures. Since these common features are obvious to those skilled in the art, there is no need to describe the identical features of 1020.1 and 20.1. Furthermore, some features of 1020.1 and 20.1 may be backward compatible, and those skilled in the art will understand that features of embodiments described later (NXX.XX) may include features (MXX.XX) that are compatible with various other embodiments described earlier. The rules described herein also apply to the use of element numbers with the suffixes of prime ('), double prime (''), triple prime ('''), and asterisk (*). Therefore, the common features of 20.1, 20.1', 20.1'', 20.1''', and 20* are obvious to those skilled in the art in the relevant field, and therefore do not need to be described.

[0016] The following paragraphs describe specific embodiments of the present invention. In the following paragraphs, some element numbers are prefixed with "X" to indicate that the word relates to any similar feature disclosed in the drawings or described herein. However, those skilled in the art will recognize various other element numbers that are not prefixed with "X" and describe features applicable to other embodiments.

[0017] This specification may use different words to describe the same element number or to refer to an element number (NXX.XX) in a particular group of features. Such multiple different words are not intended to provide a redefinition of any language in this specification. Such words are intended to indicate that a particular feature can be considered in various linguistic ways, which are not necessarily additive or exclusive.

[0018] Figure 1 The image shows an upper front left perspective view of a semi-enclosed compressor 100 according to an aspect of the present disclosure. The compressor 100 includes a semi-enclosed compressor housing 120. The compressor housing 120 includes an electrically operated double-cylinder rolling piston rotary compressor assembly 140 ( Figure 1 The compressor housing 120 is configured to house the compressor (see Figure 2, although it is not visible in Figure 140) in a semi-sealed state and consists mainly of a bolted aluminum casing with a suitable gasket. The compressor housing 120 includes an overall refrigerant discharge port 160 configured to be appropriately semi-sealed to a hose or pipe (not shown) for supplying compressed refrigerant gas therein. The compressor 100 also includes an auxiliary housing 180 bolted to the compressor housing 120. The auxiliary housing 180 also consists mainly of a bolted aluminum casing with a suitable gasket and includes an overall refrigerant inlet port 200 configured to be appropriately semi-sealed to a hose or pipe (not shown) for receiving relatively low-pressure refrigerant gas therefrom. The auxiliary housing 180 also includes a power receiver or socket 220 appropriately configured to be electrically coupled to a mating plug (not shown) for receiving power (for supplying power to the compressor assembly 140) from an electric vehicle power system or other suitable external power supply unit (not shown). The auxiliary housing 180 also includes an electrical signal port 240 that is appropriately configured to be electrically coupled to a mating port (not shown) for receiving electrical signals (for controlling the operation of the compressor assembly 140) from an electric vehicle power management system or other suitable external control system (not shown).

[0019] Figure 2This shows a partially exploded view of the semi-enclosed compressor assembly 100, viewed from the upper front left perspective. The semi-enclosed compressor housing 120 includes the chamber body 260 and a rear, i.e., back cover plate 280. The electrically operated double-cylinder rolling piston rotary compressor assembly 140 fits into the chamber body 260. Bolts 300 extend into the chamber body 260 through the cover plate 280. The cover plate 280 also seals the compressor assembly 140 and the chamber body 260 in a semi-enclosed state under the force of the bolts 300. Furthermore, the chamber body 260 defines a fitting slot 320 and an intermediate refrigerant receiving port 340. The auxiliary housing 180 includes a projection 360 that fits into the fitting slot 320 and a suction pipe assembly 500 (this is, Figure 2 Although not shown, Figure 3 It includes an intermediate refrigerant delivery port 380 that is semi-sealed and connected to the receiving port 340 via (see reference). Bolts 400 secure the auxiliary housing 180 to the chamber body 260. The compressor assembly 100 also includes an overall refrigerant discharge pipe 404 that extends upward through the discharge port 160.

[0020] Figure 3 This shows a partially exploded view of an electric double-cylinder rolling piston rotary compressor assembly 140, viewed from the upper front left perspective. The compressor assembly 140 includes a core compressor assembly 420, a helical oil pump assembly 440, a gas flow deflector or baffle 460, bolts 480, a suction pipe assembly 500, an electric motor 540, and a hollow camshaft 560. The camshaft 560 penetrates the compressor assembly 420 along its axis 580 and includes a front end 600 and a rear end 620. The front end 600 protrudes forward from the assembly 420. The rear end 620 protrudes rearward from the assembly 420. The oil pump assembly 440 includes a cup-shaped fitting 640. Figure 13 and Figure 14 As will be discussed further in relation to this, the fitting 640 connects the assembly 440 to the front end 600 of the camshaft 560. The baffle 460 is arc-shaped above the oil pump assembly 440 and the discharge pipe 404 ( Figure 3 Although not shown, Figure 2 The baffle 460 is located between the (see reference) and the oil pump assembly 440 (generally above the oil pump assembly 440 and below the discharge pipe 404). Bolts 480 secure the baffle 460 to the compressor assembly 420. The baffle 460 is designed to suppress refrigerant turbulence (and thus oil agitation) near the oil pump assembly 440, which the inventors believe can improve the inlet conditions of the oil pump, and therefore can improve the efficiency / performance of the oil pump assembly 440. The suction pipe assembly 500 is semi-sealed to the compressor assembly 420 and extends substantially laterally and downward from there. The electric motor 520 may be any preferred direct current ("DC") motor (brushed or brushless) or alternating current ("AC") motor. The motor 520 includes a motor rotor assembly 660 with a counterweight mechanically coupled to the rear 620 of the camshaft 560. It should be noted that the motor 520 is operable to rotate the motor rotor assembly 660 with a counterweight. It should also be noted that the core compressor assembly 420 is operable to draw refrigerant into it through the suction pipe assembly 500 and compress the refrigerant in response to the rotation of the camshaft 560.

[0021] Figure 4 and Figure 5The diagrams show an exploded view of the electric double-cylinder rolling piston rotary compressor assembly 140, from an upper front left perspective and an upper rear right perspective, respectively. The compressor assembly 140 includes a front end cap 680, a leaf or reed valve 700, a first or forward cylinder cover plate 720, blades 740, a first or forward compression cylinder 760, a suction pipe assembly 500, a hollow camshaft 560, an axial flow impeller 780 fastened internally to the camshaft 560, a rear oil plug 800 substantially inserted into the rear 620 of the camshaft 560 but protruding from it nonetheless, a first or forward compression roller 820, a first or forward intermediate cylinder cover plate 840, a second or rear intermediate cylinder cover plate 860, a second or rear compression roller 880, a second or rear compression cylinder 900, a plug or stop device 920, a second or rear cylinder cover plate 940, a first or intermediate drive-side end cap 960, and a second or rear or back drive-side end cap 980.

[0022] Figure 6 teeth, Figure 1 A vertical cross-sectional view of the semi-enclosed compressor 100 in the direction of line 59-59 is shown. The auxiliary housing 180 defines a semi-enclosed refrigerant inlet compartment 1000 having a wall 1020. The auxiliary housing 180 also includes a sieve 1040 that extends diagonally across the inlet compartment 1000. Furthermore, the auxiliary housing 180 defines an electronics compartment 1060. The electronics compartment 1060 shares the wall 1020 with the inlet compartment 1000. However, when the auxiliary housing 180 is fully assembled, the electronics compartment 1060 does not have fluid communication with the inlet compartment 1000. When the auxiliary housing 180 is fully assembled, the electronics compartment 1060 is semi-enclosed and separated (or semi-enclosed and sealed) from the inlet compartment 1000. On the other hand, via the suction pipe assembly 500, the semi-enclosed compressor housing 120 is semi-enclosed and connected to the inlet compartment 1000, and has fluid communication with the inlet compartment 1000.

[0023] The compressor 100 includes an electric motor driver electronics unit 1080 housed within an electronics compartment 1060. The electric motor driver electronics unit 1080 may be one or more capacitors, inductor coils, transformers, resistors, transistors or other semiconductor devices, integrated circuits, inverter circuits, combinations thereof, or other electrical or electronic components or circuits for properly delivering power and / or control signals to the motor 520. When the semi-enclosed compressor assembly 100 is in operation, the compressor assembly 140 draws refrigerant (not shown) into the inlet compartment 1000 through the refrigerant inlet port 200. As the refrigerant flows through the inlet compartment 1000 (generally downward), it can effectively cool the electric motor driver electronics unit 1080 (by absorbing the heat generated by the electronics unit 1080 and transmitted through the wall 1020), which can desirablely extend the life of the electronics unit 1080 and allow any undesirable liquids from the refrigerant to evaporate to some extent. Additionally, a sieve 1040 can filter out undesirable impurities from the refrigerant. In other embodiments, the sieve 1040 may be oriented substantially perpendicular to the wall 1020, but it should be noted that the oblique orientation of the sieve 1040 increases the surface area of ​​the sieve 1040 compared to a sieve oriented perpendicularly.

[0024] Figure 7 teeth, Figure 1 The diagram shows a vertical cross-sectional view of the semi-enclosed compressor 100 in the direction of line 61-61. The semi-enclosed compressor housing 120 includes a first outer wall portion 1100 having a substantially convex cross-section. The auxiliary housing 180 includes a second outer wall portion 1120 having a substantially concave cross-section. The second outer wall portion 1120 faces the first outer wall portion 1100 and is radially spaced away from the first outer wall portion 1100. The substantially concave cross-section reflects the substantially convex cross-section in a substantially arc shape, and the second outer wall portion 1120 is at least 10 mm radially spaced away from the first outer wall portion 1100. In other embodiments, the second outer wall portion 1120 is about 0.1 mm to 15 mm radially spaced away from the first outer wall portion 1100.

[0025] Figure 8 teeth, Figure 7An enlarged vertical cross-sectional view is shown of the semi-sealed coupling (provided by the suction tube assembly 500) of the semi-sealed compressor housing 120 into the auxiliary housing 180 cut off from the compressor housing 120. The suction tube assembly 500 includes a straight tube 1140 having a radial flange 1160. Note that the flange 1160 facilitates the insertion and sealing of the tube 1140 into the receiving port 340 of the chamber body 260 of the compressor housing 120. The suction tube assembly 500 also includes a cut-off shim 1180. The shim 1180 distributes the pressure exerted by the suction volume across the entire area of ​​the suction tube flange 1160. The suction tube assembly 500 also includes a radial sealing O-ring 1200 and a pair of first axial sealing O-rings 1220 and second axial sealing O-rings 1240. Figure 9 This shows a perspective view of the Shim 1180.

[0026] Figure 10 teeth, Figure 1 A vertical cross-sectional view of an alternative semi-enclosed compressor 1260 according to an embodiment of the present disclosure is shown, in the same direction as line 61-61. Figure 10 of Figure 8 Compared to compressor 100, compressor 1260 has a straight pipe 1140 that has been replaced with a J-shaped suction accumulator pipe 1280. The suction accumulator pipe 1280 has a hole 1300 inside and has a roughly J-shaped cross-section.

[0027] Figure 11 This shows an upper front right perspective view of the non-drive side of the electrically operated double-cylinder rolling piston type rotary compressor assembly 140.

[0028] Figure 12 teeth, Figure 1 The vertical cross-sectional view of the semi-enclosed compressor 100 in the direction of line 47-47 is shown. Figure 12Upon referring to the diagram, it can be seen that the axial flow impeller 780 (which is fixed and coupled internally to the hollow camshaft 560) is positioned such that the camshaft 560, impeller 780, and plug 800 rotate together during the operation of the semi-enclosed compressor 100, thereby facilitating the oil flow from the helical oil pump assembly 440 through the camshaft 560 to the plug 800 and out of the plug 800. It can also be seen that the camshaft 560 has an intermediate side hole 1320 located in front of the plug 800. Furthermore, it should be seen that the side hole also disperses the oil.

[0029] Figure 13 teeth, Figure 12The image shows an enlarged vertical cross-sectional view of the helical oil pump assembly 440 of the semi-enclosed compressor 100, cut from the image. The oil pump assembly 440 is an Archimedes screw type pump, comprising a coil spring 1340, a screw 1360 made of plastic or any other suitable material, an outer sleeve or tube 1380, and a cup-shaped fitting 640 made of metal or any other suitable material. The tube 1380 is mechanically connected to the cup-shaped fitting 640. The screw extends along an axis 1420. The axis 1420 is preferably inclined (neither coaxial nor parallel) with respect to the axis 580 (an extension of the camshaft 560). The spring 1340 is fixed and coupled to the camshaft 560 at one end and transmits / reorients the rotational motion of the camshaft 560 to the screw 1360. Accordingly, the opposing portion or end portion 1440 of the spring 1340 extends into the screw 1360 and is fixed and coupled to it. The screw 1360 rotates within the tube 1380 to pump a fluid (oil in this case) in the manner of the Archimedes screw principle. The tube 1380 (which does not rotate) is fixed and coupled to the bearing 1460 via a fitting 640. Within the fitting 640, the bearing 1460 abuts against the camshaft 560 at the lubrication hole or inlet 1480 of the camshaft. The oil pumped by the screw 1360 flows into the spring 1340 (proximal to the camshaft 560) through the gap between the coils of the spring 1340 (it should be recognized that such a gap is exaggerated where the spring 1340 bends from the axis 1420 (of the screw 1360) toward the lubrication inlet 1480 of the camshaft), and then flows from the inside of the spring 1320 toward the lubrication inlet 1480 of the camshaft. The distal end 1500 of the spring (i.e., the end further away from the lubrication inlet 1480 of the crankshaft) is closed by a metal plug 1520, which can also be used to fasten and connect the spring 1340 to the screw 1360. Figure 14 This shows an enlarged perspective view of the spiral oil pump assembly 440. In an alternative embodiment, the coil spring 1340 may be replaced with a suitable flexible rod.

[0030] Figure 15 teeth, Figure 12 This shows an enlarged vertical cross-sectional view of the discharge pipe 404 cut out from the main body. Figure 16The diagram shows a perspective view of the discharge pipe 404. The discharge pipe 404 is designed to prevent the lubricating oil (circulating within the compressor housing 120 during the operation of the compressor 100) from being swept away by the refrigerant flow through the discharge port 160. The discharge pipe 404 includes a side wall 1540. The side wall 1540 defines an inlet hole 1560 through which it passes. The inlet hole 1560 receives the refrigerant flow containing refrigerant and / or oil into the discharge pipe 404. The discharge pipe 404 also includes a bottom end 1580 which defines a drip hole 1600. It should be noted that the drip hole 1620 may allow oil to drip or drop back into the compressor housing 120 for recirculation by the cooperation of the oil pump assembly 440, impeller 780, and camshaft 560. The discharge pipe 404 also has an upward-facing outlet opening or orifice 1580 at its top, which is connected to the discharge port 160. It should be noted that the outlet opening 1580 allows compressed refrigerant and / or compressed refrigerant containing relatively less oil to be supplied from the compressor housing 120 through the discharge port 160.

[0031] Figure 17 teeth, Figure 12 This shows an enlarged vertical cross-sectional view of the rear oil plug 800, which was cut out from the original. Figure 18 teeth, Figure 17 This shows an enlarged vertical cross-sectional view of the rear oil plug 800, cut from the original. Figure 19 This shows a perspective view of the rear oil plug 800. Figure 17 As can be seen (and as discussed above), the oil plug 800 is inserted into the rear 620 of the camshaft 560 and protrudes from there. Figure 17 It can be seen in, and further Figure 18 and Figure 19As can be easily seen, the plug 800 is substantially cup-shaped and tapered to facilitate insertion into the camshaft 560 and has a side wall 1640. The side wall 1640 defines an oil discharge orifice or hole 1660 therein. It should be noted that although the plug 800 is substantially inserted into the camshaft 560, it protrudes sufficiently from the camshaft 560 so that the camshaft 560 does not block or seal the hole 1660, and therefore, when the camshaft 560 rotates during the operation of the compressor 100, the plug 800 may discharge oil through the orifice 1160.

[0032] Figure 20 This shows an upper front left perspective view of the motor rotor assembly 660 with counterweights. Figure 21 The figure shows a partially exploded view of the motor rotor assembly 660 with counterweights, viewed from the upper front left perspective. The rotor assembly 660 is substantially cylindrical and has a first end 1680, a second end 1700, and a substantially cylindrical core 1720 extending axially between the first end 1680 and the second end 1700. The core 1720 is appropriately configured with conventional electrical wiring / windings, magnetic materials, and / or other conventional electric motor rotor materials and features that enable the rotor assembly 660 to operate to rotate appropriately in response to a magnetic / electromagnetic field. The rotor assembly 660 includes a first substantially disc-shaped counterweight plate 1740 attached to a first end 1680 of the core 1720 and substantially axially aligned with the core 1720, and the rotor assembly 660 includes a second substantially disc-shaped counterweight plate 1760 attached to a second end 1700 of the core 1720 and substantially axially aligned with the core 1720. The first plate 1740 has a first substantially C-shaped portion 1780 extending therefrom. The second plate 1760 has a second substantially C-shaped portion 1800 extending therefrom. The second portion 1800 is positioned with a rotational displacement of substantially 180 degrees relative to the first portion 1780.

[0033] Assembly 660 also includes a first substantially disc-shaped cap 1820 attached to the first plate 1740. The first cap 1820 has a third substantially C-shaped portion 1840 extending therefrom. The third portion 1840 is rotated approximately 180 degrees relative to the first portion 1780 and faces the first plate 1740. Assembly 660 further includes a second substantially disc-shaped cap 1860 attached to the second plate 1760. The second cap 1860 has a fourth substantially C-shaped portion 1880 extending therefrom. The fourth portion 1880 is rotated approximately 180 degrees relative to the second portion 1800 and faces the second plate 1760.

[0034] Rotor caps 1820 and 1860 may be made of plastic (or any other suitable material) to reduce weight (and thus reduce the impact on the dimensions of the counterweights used for balancing). In some embodiments, the mass of the third part 1840 is less than at least one-fifth of the mass of the first part 1780, and the mass of the fourth part 1880 is less than at least one-fifth of the mass of the second part 1800.

[0035] Figure 22 This shows a cut-off inclined cross-section of the acoustic muffler system 1900 of the electrically operated double-cylinder rolling piston type rotary compressor assembly 140.

[0036] Figure 22 As can be seen, the muffler system 1900 is, 1.) The non-drive side or front camshaft bearing 1920, 2.) Front end cap 680 ( Figure 4 (See also) 3.) First intermediate plate 840 ( Figure 4 (See also) 4.) Second intermediate plate 860 ( Figure 4 (See also) 5.) The drive side or the camshaft bearing 1940 located relatively rearward, 6.) First drive-side end cap 960( Figure 4(See also) 7.) Second drive side end cap 980( Figure 4 (See also) Includes.

[0037] The non-drive side bearing 1920 and the front end cap 680 constitute a first acoustic muffler chamber or volume 1960. The first intermediate plate 840 and the second intermediate plate 860 constitute a second acoustic muffler chamber or volume 1980. The drive side bearing 1940 and the first drive side end cap 960 constitute a third acoustic muffler chamber or volume 2000. Furthermore, the first drive side end cap 960 and the second drive side end cap 980 constitute a fourth acoustic muffler chamber or volume 2020. The first acoustic muffler chamber 1960, the second acoustic muffler chamber 1980, the third acoustic muffler chamber 2000, and the fourth acoustic muffler chamber 2020 maintain uninterrupted fluid communication with each other through a hole 2040 passing through the anti-drive side bearing 1920, a hole 2060 passing through the first intermediate plate 840, respective channels 2080 extending between holes 2040 and 2060, a hole 2100 passing through the second intermediate plate 860, a hole 2120 passing through the drive side bearing 1940, respective channels 2140 extending between holes 2100 and 2120, and a hole 2160 in the first drive side end cap 960.

[0038] The non-drive side bearing 1920 and the front end cap 680 are connected in a semi-sealed state. The second drive side end cap 980 includes a drive side collar 2180. The collar 2180 surrounds each drive side portion 2200 of the drive side bearing 1940, but is radially spaced away from them, so that the collar 2180 and the drive side portions 2200 form an annular refrigerant discharge orifice 2220.

[0039] When the compressor assembly 140 is operating, the compressed refrigerant is instead released into the muffler system 1900 by the first cylinder 760 and the second cylinder 900. The refrigerant is acoustically attenuated by the muffler system 1900, circulates within the muffler system 1900, flows through the muffler system 1900, and is discharged into the semi-enclosed compressor housing 120 through the annular orifice 2220.

[0040] Figure 23 This shows a complementary perspective exploded view of the first intermediate acoustic muffler plate 840 and the second intermediate acoustic muffler plate 860. The intermediate plates 840 and 860 are cut out at the bottom to form acoustic cavities 2240 that reduce the emission of undesirable sound / noise. It should be noted that in some embodiments, the exact shape of the cavities 2240 may differ from the shape shown herein, provided that the overall geometry provides desirable acoustic mitigation.

[0041] Figure 24 teeth, Figure 22 The image shows a separated cross-sectional view of the drive-side end of the alternative acoustic muffler system 2260 of the alternative semi-closed compressor according to an embodiment of the present disclosure, in the same direction. The muffler system 2260 has two side-by-side holes 2300 for discharging the refrigerant. Figure 24 The outer cap 2280 has a hole (only one of which is visible), and the hole is offset from the hole 2320 of the smaller drive-side cap 2340 and is located at the bottom of the alternative compressor to facilitate the cleaning of its lubricating oil.

[0042] It should be recognized that aspects of this disclosure may be incorporated into air conditioning, cooling, heating pumps, and / or other cooling and / or heating systems for heat exchange of air and / or liquids for electric vehicles, internal combustion engine vehicles, aircraft, marine vessels, buildings, manufacturing systems, and / or any other suitable applications.

[0043] Although the present invention is illustrated and described in detail in the drawings and the foregoing description, these should be considered illustrative examples and not limiting characteristics. Only specific embodiments are illustrated and described, and it is understood that it is desirable that all modifications and alterations within the spirit of the invention be protected. Furthermore, this specification includes the disclosures set forth in the following sections. (Section 1) A semi-sealed compressor housing, An electrically operated double-cylinder rolling piston type rotary compressor assembly housed within the aforementioned housing, Electric motor driver electronic equipment, An auxiliary housing defines a semi-sealed refrigerant inlet compartment with a wall, and defines an electronic equipment compartment that shares the wall with the inlet compartment but is separated from the inlet compartment in a semi-sealed state, Apparatus including, The compressor housing is connected to the inlet compartment in a semi-sealed state and is in fluid communication with the inlet compartment, and the electronic equipment compartment houses electronic equipment. (Section 2) The compressor housing includes a first outer wall portion having a first convex cross-section, The auxiliary housing includes a second outer wall portion having a substantially concave cross-section, The apparatus according to item 1, wherein the second outer wall portion faces the first outer wall portion, the second outer wall portion is radially spaced apart from the first outer wall portion, and the substantially concave cross-section reflects the substantially convex cross-section in a substantially arc shape. (Section 3) The apparatus according to item 1, wherein the second outer wall portion is spaced approximately 0.1 mm to 15 mm radially from the first outer wall portion. (Section 4) The apparatus according to claim 3, wherein the second outer wall portion is spaced at least 10 mm radially apart from the first outer wall portion. (Section 5) Includes a suction accumulator extending within the aforementioned inlet compartment, The apparatus according to item 4, wherein the compressor housing is connected in a semi-sealed manner to the inlet compartment via the suction accumulator. (Section 6) The apparatus according to item 5, wherein the suction accumulator includes a tube having a substantially J-shaped cross-section. (Section 7) The apparatus according to item 3, wherein the compressor housing is substantially made of aluminum. (Section 8) The apparatus according to item 5, wherein the compressor housing is substantially made of aluminum. (Section 9) The roller of the first rolling piston type rotary compressor, The rollers of the second rolling piston type rotary compressor, A substantially hollow camshaft arranged to cooperate with the first roller and the second roller, Archimedes screw and, A flexible coupling mechanically connected internally to the camshaft, comprising: a first end extending from the camshaft in a first direction; a second end extending in a second direction and engaging with the Archimedes screw; and an intermediate portion extending between the first and second ends and bending from the first direction to the second direction; A device including a device. (Section 10) The apparatus according to item 9, wherein the flexible coupling includes a flexible rod. (Section 11) The apparatus according to item 9, wherein the flexible coupling includes a flexible coil. (Section 12) The apparatus according to claim 11, further comprising an oil flow tube covering the intermediate portion of the coil. (Section 13) The apparatus according to item 12, wherein the first direction is substantially vertical and the second direction is substantially downward. (Section 14) It includes an axial flow impeller fastened to the camshaft internally, The apparatus according to item 13, wherein the first end of the coil is fastened to the axial flow impeller. (Section 15) A semi-sealed compressor housing, A baffle positioned approximately above the oil flow tube, comprising a bottom surface and a top surface, A refrigerant discharge pipe positioned substantially above the top surface of the baffle, which opens into the inside of the compressor housing, penetrates the compressor housing, and also opens to the outside of the compressor housing, Includes, The apparatus according to item 13, wherein the oil flow pipe and the baffle are housed within the compressor housing, and the bottom surface of the baffle is in fluid communication with the top surface of the baffle within the compressor housing. (Section 16) The apparatus according to item 15, wherein the baffle is substantially arc-shaped above the oil flow tube. (Section 17) The apparatus according to claim 16, wherein the compressor housing includes a first portion having an inner diameter, the baffle is substantially located within the first portion of the compressor housing, and the baffle extends laterally over a substantial portion of the inner diameter. (Section 18) The apparatus according to item 17, wherein the baffle includes a notched left portion and a notched right portion. (Section 19) The apparatus according to item 18, wherein the baffle is substantially symmetrical laterally. (Section 20) The refrigerant discharge pipe includes a bottom portion defining a refrigerant drip hole, a top portion defining a refrigerant discharge port, and a substantially longitudinal portion extending between the bottom portion and the top portion defining a refrigerant receiving hole. The apparatus according to item 16, wherein the dropping hole is smaller than the discharge port, and the dropping hole is smaller than the receiving hole. (Section 21) The roller of the first rolling piston type rotary compressor, The rollers of the second rolling piston type rotary compressor, A camshaft arranged to cooperate with the first roller and the second roller, An electric motor including a rotor, wherein the rotor is mechanically connected to the camshaft, includes a first end and a second end, and is substantially cylindrical between the first end and the second end, A first substantially disc-shaped counterweight attached to the first end of the rotor, the first substantially disc-shaped counterweight having a first substantially C-shaped portion extending therefrom, A second substantially disc-shaped counterweight attached to the second end of the rotor, having a second substantially C-shaped portion extending therefrom, wherein the second substantially C-shaped portion is rotated approximately 180 degrees relative to the first substantially C-shaped portion and positioned on the second end of the rotor, A first substantially disc-shaped cap attached to a first counterweight, having a third substantially C-shaped portion extending therefrom, wherein the third substantially C-shaped portion is rotated approximately 180 degrees relative to the first substantially C-shaped portion and faces the first counterweight, A second substantially disc-shaped cap attached to a second counterweight, having a fourth substantially C-shaped portion extending therefrom, wherein the fourth substantially C-shaped portion is rotated approximately 180 degrees relative to the second substantially C-shaped portion and faces the second counterweight; A device including a device. (Section 22) The apparatus according to claim 21, wherein the first substantially C-shaped portion has a first mass, the second substantially C-shaped portion has a second mass, the third substantially C-shaped portion has a third mass, the fourth substantially C-shaped portion has a fourth mass, and the first mass is at least five times the mass of the third. (Section 23) A semi-sealed compressor housing, A pair of rolling piston type rotary compressor cylinders housed within the housing, comprising a first rolling piston type rotary compressor cylinder and a second rolling piston type rotary compressor cylinder, A discharge valve for a pair of compressor cylinders, comprising a first valve mechanically connected to the first cylinder and a second valve mechanically connected to the second cylinder, A pair of plates interposed between the first cylinder and the second cylinder, the plates comprising a first plate defining a first recess and a second plate facing the first plate and defining a second recess, wherein the first recess and the second recess together define a first acoustic muffler chamber, Apparatus including, The apparatus is configured such that the valve controls the flow of refrigerant from the first cylinder and the second cylinder to the first chamber. (Section 24) The apparatus according to item 23, wherein the second recess substantially coincides with the first recess. (Section 25) The apparatus according to item 24, wherein each of the plates is disc-shaped. (Section 26) The apparatus according to claim 25, wherein the valves are arranged to alternately direct the flow of refrigerant from the first cylinder and the second cylinder to the first chamber. (Section 27) A camshaft extending through the cylinder, having a drive side and a non-drive side, A bearing on the non-drive side that supports the non-drive side portion of the camshaft, A non-drive side plate is positioned on the non-drive side of the bearing and defines a second acoustic muffler chamber, Includes, The apparatus according to item 26, wherein the second chamber is in fluid communication with the first chamber. (Section 28) A semi-sealed compressor housing, A pair of rolling piston type rotary compressor cylinders housed within the housing, comprising a first rolling piston type rotary compressor cylinder and a second rolling piston type rotary compressor cylinder, A discharge valve for a pair of compressor cylinders, comprising a first valve mechanically connected to the first cylinder and a second valve mechanically connected to the second cylinder, A camshaft that penetrates the cylinder, having a drive side and a non-drive side, A drive-side bearing that supports the drive-side portion of the camshaft, A first drive-side plate is positioned on the drive side of the bearing and defines a first acoustic muffler chamber having a pair of coolant flow holes inside, wherein the holes include a first hole extending around each of the first axes and a second hole extending around each of the second axes, A second drive-side plate is positioned on the drive side of the first plate and defines a second acoustic muffler chamber having a first refrigerant discharge port inside, wherein the first discharge port extends around each of the third axes of the second drive-side plate, Apparatus including, The valve is arranged to control the flow of refrigerant from the first cylinder and the second cylinder to the first chamber. The apparatus wherein the second chamber is in fluid communication with the first chamber, but neither the first axis nor the second axis is aligned with the third axis. (Section 29) The camshaft extends longitudinally around the fourth axis, The apparatus according to item 28, wherein the third axis is aligned with the fourth axis. (Section 30) The first discharge port has an inner diameter, The drive-side bearing has an outer diameter and includes a bearing portion that extends into the first discharge port. The apparatus according to item 29, wherein the outer diameter of the bearing portion is smaller than the inner diameter of the first discharge port. (Section 31) The second drive-side plate defines a second discharge port within the second chamber, The first discharge port is positioned relatively lower than the camshaft, The apparatus according to item 30, wherein the second discharge port is positioned relatively lower than the camshaft. (Section 32) A pair of intermediate plates interposed between the first cylinder and the second cylinder, comprising: a first intermediate plate defining a first recess; and a second intermediate plate facing the first intermediate plate and defining a second recess, wherein the first recess and the second recess together define a third acoustic muffler chamber. Includes, The apparatus according to claim 28, wherein the valve is arranged to control the flow of refrigerant from the first cylinder and the second cylinder to the third chamber, and the third chamber is in fluid communication with the first chamber. (Section 33) A bearing on the non-drive side that supports the non-drive side portion of the camshaft, A non-drive side plate is positioned on the non-drive side of the bearing and defines a fourth acoustic muffler chamber, Includes, The apparatus according to item 32, wherein the fourth chamber is in fluid communication with the third chamber.

Claims

1. The roller of the first rolling piston type rotary compressor, A substantially hollow camshaft arranged to cooperate with the rollers of the first rolling piston rotary compressor, Archimedes screw and, A flexible coupling mechanically connected internally to the camshaft, having a first end extending in a first direction from the camshaft, a second end extending in a second direction and engaging with the Archimedes screw, and an intermediate portion extending between the first end and the second end and bending from the first direction to the second direction, A device including a device.

2. The apparatus according to claim 1, wherein the flexible coupling includes a flexible rod.

3. The apparatus according to claim 1, wherein the flexible coupling includes a flexible coil.

4. The apparatus according to claim 3, further comprising an oil flow pipe covering the intermediate portion of the coil.

5. The apparatus according to claim 4, wherein the first direction is substantially vertical and the second direction is substantially downward.

6. It includes an axial flow impeller fastened to the camshaft internally, The apparatus according to claim 5, wherein the first end of the coil is fastened to the axial flow impeller.

7. A semi-sealed compressor housing, A baffle positioned approximately above the oil flow tube, comprising a bottom surface and a top surface, A refrigerant discharge pipe positioned substantially above the top surface of the baffle, which opens into the inside of the compressor housing, penetrates the compressor housing, and also opens to the outside of the compressor housing, Includes, The apparatus according to claim 5, wherein the oil flow pipe and the baffle are housed within the compressor housing, and the bottom surface of the baffle is in fluid communication with the top surface of the baffle within the compressor housing.

8. The apparatus according to claim 7, wherein the baffle is substantially arc-shaped above the oil flow pipe.

9. The apparatus according to claim 8, wherein the compressor housing includes a first portion having an inner diameter, the baffle is substantially located within the first portion of the compressor housing, and the baffle extends laterally over a substantial portion of the inner diameter.

10. The apparatus according to claim 9, wherein the baffle includes a notched left portion and a notched right portion.

11. The apparatus according to claim 10, wherein the baffle is substantially symmetrical laterally.

12. The refrigerant discharge pipe includes a bottom portion defining a refrigerant drip hole, a top portion defining a refrigerant discharge port, and a substantially longitudinal portion extending between the bottom portion and the top portion defining a refrigerant receiving hole. The apparatus according to claim 8, wherein the dripping hole is smaller than the discharge port, and the dripping hole is smaller than the receiving hole.

13. Further comprising rollers of a second rolling piston type rotary compressor, The apparatus according to any one of claims 1 to 12, wherein the substantially hollow camshaft is arranged to cooperate with the rollers of the second rolling piston rotary compressor.

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