Compressor

Abstract

This compressor comprises: a cylinder including a cylinder chamber; a cylinder cover including a connection hole provided to discharge a refrigerant from the cylinder chamber; and a valve assembly configured to open and close the connection hole. The valve assembly includes: a first valve configured to be deformable; a second valve configured to be deformable and having a portion that can come into contact with the first valve on the basis of the pressure inside the cylinder chamber; and a spacer which can be disposed between the first valve and the second valve in order to separate the second valve from the first valve so that the second valve deforms on the basis of the pressure inside the cylinder chamber after the first valve deforms. The thickness of the spacer is 2.4 to 3.2 times the thickness of the first valve.

Description

compressor

[0001] The present invention relates to a compressor including a valve.

[0002] A compressor is a mechanical device that receives power from a power generation device, such as an electric motor or turbine, and compresses air, refrigerants, or various other working gases to increase their pressure. Compressors are widely used in home appliances, such as refrigerators, air conditioners, and clothes dryers, as well as across various industries. Types of compressors include reciprocating compressors, scroll compressors, and rotary compressors.

[0003] A reciprocating compressor compresses the working gas by forming a compression space between the piston and the cylinder where the working gas is drawn in and discharged, allowing the piston to reciprocate in a straight line inside the cylinder.

[0004] A scroll compressor compresses the working gas as the rotating scroll rotates along the stationary scroll by forming a compression space between the rotating scroll and the stationary scroll where the working gas is drawn in and discharged.

[0005] A rotary compressor compresses the working gas as the rolling piston rotates eccentrically along the inner wall of the cylinder by forming a compression space between the eccentrically rotating rolling piston and the cylinder, where the working gas is drawn in and discharged.

[0006] One aspect of the present disclosure provides a compressor with improved efficiency.

[0007] The technical problems to be solved in this document are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0008] A compressor according to the concept of the present disclosure comprises a cylinder including a cylinder chamber, a cylinder cover including a connecting hole provided to discharge refrigerant from the cylinder chamber, and a valve assembly configured to open and close the connecting hole. The valve assembly comprises a first valve configured to be deformable, a second valve configured to be deformable having a portion configured to contact the first valve based on the internal pressure of the cylinder chamber, and a spacer configured to be disposed between the first valve and the second valve so as to separate the second valve from the first valve, so that the second valve is deformed after the first valve is deformed based on the internal pressure of the cylinder chamber. The thickness of the spacer is 2.4 to 3.2 times the thickness of the first valve.

[0009] A compressor according to the concept of the present disclosure comprises a cylinder including a cylinder chamber, a cylinder cover including a connecting hole provided to discharge refrigerant from the cylinder chamber, and a valve configured to open and close the connecting hole. The valve comprises a first valve, a second valve provided to be in contact with a portion thereof based on the internal pressure of the cylinder chamber, a spacer disposed between the first valve and the second valve to separate the second valve from the first valve, and a rotation limiting portion for limiting the rotation of the second valve.

[0010] FIG. 1 is a schematic drawing illustrating an air conditioner including a compressor according to one embodiment of the present disclosure.

[0011] FIG. 2 illustrates a cross-section of a compressor and an accumulator according to one embodiment of the present disclosure.

[0012] FIG. 3 illustrates a partial configuration of a compressor according to one embodiment of the present disclosure.

[0013] Figure 4 illustrates a part of the compressor shown in Figure 3 in a direction different from the direction shown in Figure 3.

[0014] FIG. 5 illustrates a disassembled view of a part of a compressor according to one embodiment of the present disclosure.

[0015] Figure 6 shows a disassembled view of some components of the compressor illustrated in Figure 4.

[0016] Figure 7 illustrates a cross-section along the line A-A' shown in Figure 3.

[0017] Figure 8 shows a cross-section along the line B-B' indicated in Figure 3.

[0018] FIG. 9 illustrates the valve by disassembling the upper muffler of a compressor according to one embodiment of the present disclosure.

[0019] FIG. 10 illustrates a disassembled valve of a compressor according to one embodiment of the present disclosure.

[0020] FIG. 11 shows a cross-section along the C-C' line indicated in FIG. 9.

[0021] FIG. 12 is a graph schematically illustrating the force applied to a valve having various thicknesses of a compressor according to one embodiment of the present disclosure and the resulting deformation amount.

[0022] FIG. 13 is a graph schematically illustrating the efficiency according to the ratio of the spacer and the first valve while various loads are applied to a compressor according to one embodiment of the present disclosure.

[0023] Figure 14 shows an enlarged view of section D indicated in Figure 11.

[0024] FIG. 15 illustrates the change in the state of the valve shown in FIG. 14 when the compressor according to one embodiment of the present disclosure is in a low-load state.

[0025] FIG. 16 illustrates the change in the state of the valve shown in FIG. 14 when the compressor according to one embodiment of the present disclosure is in a high-load state.

[0026] FIG. 17 illustrates a disassembled valve of a compressor according to one embodiment of the present disclosure.

[0027] FIG. 18 illustrates a disassembled valve of a compressor according to one embodiment of the present disclosure.

[0028] FIG. 19 illustrates a disassembled stopper of a valve according to one embodiment of the present disclosure.

[0029] FIG. 20 illustrates a disassembled valve of a compressor according to one embodiment of the present disclosure.

[0030] FIG. 21 illustrates a disassembled stopper of a valve according to one embodiment of the present disclosure.

[0031] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments.

[0032] In relation to the description of the drawings, similar reference numerals may be used for similar or related components.

[0033] The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0034] In this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0035] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components.

[0036] The terms "part," "module," and "component" may be implemented in hardware or software. Depending on the embodiments, a plurality of "parts," "modules," and "components" may be implemented as a single component, or a single "part," "module," or "component" may include a plurality of components.

[0037] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish a component from another component and do not limit the components in other aspects (e.g., importance or order).

[0038] Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0039] Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this document, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0040] When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0041] When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components.

[0042] Meanwhile, terms such as "up," "down," "horizontal direction," and "vertical direction" used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms.

[0043] Among the expressions used in the following description, "upper ~", "lower ~", etc., may be used to distinguish components by considering their relative positions, and these expressions may be replaced with expressions such as "first ~", "second ~".

[0044] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0045] FIG. 1 is a schematic drawing illustrating an air conditioner including a compressor according to one embodiment of the present disclosure.

[0046] Referring to FIG. 1, a compressor (11) according to one embodiment of the present disclosure may be included in an air conditioner (1).

[0047] The air conditioner (1) can absorb heat from the indoors and release heat to the outdoors for cooling the space to be air-conditioned, i.e., the indoor space. Additionally, the air conditioner (1) can absorb heat from the outdoors and release heat to the indoor space for heating the indoor space. The air conditioner (1) may include an outdoor unit (10) configured to exchange heat with outdoor air and an indoor unit (20) configured to exchange heat with indoor air. For example, the outdoor unit (10) may be installed in an outdoor space to exchange heat with outdoor air, and the indoor unit (20) may be installed in an indoor space to exchange heat with indoor air.

[0048] An air conditioner (1) according to one embodiment may be a split-type air conditioner in which an outdoor unit (10) and an indoor unit (20) are installed separately from each other. Alternatively, an air conditioner (1) according to one embodiment may be an integrated-type air conditioner in which an outdoor unit (10) and an indoor unit (20) are installed together in a single cabinet.

[0049] The outdoor unit (10) can perform heat exchange between the refrigerant and the outdoor air by utilizing the phase change of the refrigerant (e.g., evaporation or condensation). For example, the outdoor unit (10) can release the heat of the refrigerant to the outdoor air by utilizing the condensation of the refrigerant. Additionally, the outdoor unit (10) can absorb the heat of the outdoor air into the refrigerant by utilizing the evaporation of the refrigerant.

[0050] The outdoor unit (10) may include a compressor (11) configured to compress refrigerant gas. The outdoor unit (10) may include an outdoor heat exchanger (12) configured to exchange heat between the outdoor air and the refrigerant.

[0051] The indoor unit (20) can perform heat exchange between the refrigerant and the indoor air by utilizing the phase change of the refrigerant (e.g., evaporation or condensation). For example, the indoor unit (20) can cool the indoor space by absorbing heat from the indoor air into the refrigerant using the evaporation of the refrigerant. Additionally, the indoor unit (20) can heat the indoor space by releasing heat from the refrigerant into the indoor air using the condensation of the refrigerant.

[0052] The indoor unit (20) may include an indoor heat exchanger (22) configured to exchange heat between indoor air and refrigerant.

[0053] As illustrated in FIG. 1, the air conditioner (1) may include a refrigerant circulation circuit for transferring heat between an outdoor unit (10) and an indoor unit (20) via a refrigerant.

[0054] The refrigerant circulation circuit may include a compressor (11), an outdoor heat exchanger (12), an expansion device (13), and an indoor heat exchanger (22). The refrigerant may circulate in the order of the compressor (11), the outdoor heat exchanger (12), the expansion device (13), and the indoor heat exchanger (22), or in the order of the compressor (11), the indoor heat exchanger (22), the expansion device (13), and the outdoor heat exchanger (12).

[0055] The compressor (11) can compress the refrigerant. Low-temperature, low-pressure refrigerant can be introduced into the compressor (11). The compressor (11) can compress the refrigerant in a low-temperature, low-pressure state to produce a refrigerant in a high-temperature, high-pressure state. The compressor (11) can discharge the high-temperature, high-pressure refrigerant gas. For example, the compressor (11) may include a motor and a compression mechanism, and the compression mechanism can compress the refrigerant by the torque of the motor.

[0056] In the outdoor heat exchanger (12), heat exchange between the refrigerant and the outdoor air can take place. For example, during cooling operation, high-temperature, high-pressure refrigerant condenses in the outdoor heat exchanger (12), and while the refrigerant is condensing, the refrigerant can release heat to the indoor air. During cooling operation, the outdoor heat exchanger (12) can discharge liquid refrigerant. Additionally, during heating operation, low-temperature, high-pressure refrigerant evaporates in the outdoor heat exchanger (12), and while the refrigerant is evaporating, the refrigerant can absorb heat from the indoor air. During heating operation, the outdoor heat exchanger (12) can discharge refrigerant gas.

[0057] An outdoor fan (16) may be provided near the outdoor heat exchanger (12). The outdoor fan (16) can blow outdoor air into the outdoor heat exchanger (12) to promote heat exchange between the refrigerant and the outdoor air.

[0058] The expansion device (13) can expand the refrigerant. For example, the expansion device (13) can expand the high-temperature, high-pressure refrigerant liquid using a throttling effect. The expansion device (13) can discharge the low-temperature, low-pressure refrigerant liquid. The expansion device (13) may include an orifice that can reduce the cross-sectional area of ​​the flow path.

[0059] The expansion device (13) can be connected to the indoor unit (20). The expansion device (13) can be provided in a number corresponding to the number of indoor units (20).

[0060] In the indoor heat exchanger (22), heat exchange between the refrigerant and the indoor air can take place. For example, during cooling operation, low-pressure, low-temperature refrigerant evaporates in the indoor heat exchanger (22), and while the refrigerant evaporates, the refrigerant can absorb heat from the indoor air. During cooling operation, the indoor heat exchanger (22) can discharge refrigerant gas. Additionally, during heating operation, high-temperature, high-pressure refrigerant condenses in the indoor heat exchanger (22), and while the refrigerant condenses, the refrigerant can release heat to the indoor air. During heating operation, the indoor heat exchanger (22) can discharge liquid refrigerant.

[0061] Depending on the embodiment, a separate expansion device (not shown) or a capillary tube (not shown) may be provided on the inlet side of the indoor heat exchanger (22). The separate expansion valve or capillary tube can expand the refrigerant liquid to provide low-temperature, low-pressure refrigerant liquid to the indoor heat exchanger (22).

[0062] An indoor fan (26) may be provided near the indoor heat exchanger (22). The indoor fan (26) can blow indoor air into the indoor heat exchanger (22) to promote heat exchange between the refrigerant and the outdoor air.

[0063] Additionally, the refrigerant circulation circuit may further include a flow switching valve (14). For example, the flow switching valve (14) may include a 4-way valve. The flow switching valve (14) may be connected to the refrigerant outlet of the compressor (11).

[0064] The flow path switching valve (14) can switch the circulation path of the refrigerant depending on the operating mode of the air conditioner (1) (e.g., cooling operation or heating operation). For example, during the cooling operation of the air conditioner (1), the flow path switching valve (14) can guide the refrigerant discharged from the compressor (11) to the outdoor heat exchanger (12), thereby allowing the refrigerant to circulate in the order of the compressor (11), the outdoor heat exchanger (12), the expansion device (13), and the indoor heat exchanger (22). Additionally, during the heating operation of the air conditioner (1), the flow path switching valve (14) can guide the refrigerant discharged from the compressor (11) to the indoor heat exchanger (22), thereby allowing the refrigerant to circulate in the order of the compressor (11), the indoor heat exchanger (22), the expansion device (13), and the outdoor heat exchanger (12).

[0065] Additionally, the refrigerant circulation circuit may further include an accumulator (15). The accumulator (15) may be connected to the refrigerant inlet of the compressor (11).

[0066] Low-temperature, low-pressure refrigerant evaporated from an indoor heat exchanger (22) or an outdoor heat exchanger (12) may be introduced into the accumulator (15). For example, during cooling operation, low-temperature, low-pressure refrigerant evaporated from an indoor heat exchanger (22) may be introduced into the accumulator (15). During heating operation, low-temperature, low-pressure refrigerant evaporated from an outdoor heat exchanger (12) may be introduced into the accumulator (15).

[0067] Depending on the load, the refrigerant may be incompletely evaporated in the indoor heat exchanger (22) or the outdoor heat exchanger (12), and the refrigerant mixed with liquid refrigerant and refrigerant gas may be introduced into the accumulator (15). When the refrigerant mixed with liquid refrigerant and refrigerant gas is introduced into the accumulator (15), the liquid refrigerant is separated from the refrigerant gas, and the refrigerant gas from which the liquid refrigerant has been separated can be supplied to the compressor (11).

[0068] For example, a compressor (11), an outdoor heat exchanger (12), an outdoor fan (16), an expansion device (13), a flow path switching valve (14), and an accumulator (15) may be placed in an outdoor unit (10). An indoor heat exchanger (22) and an indoor fan (26) may be placed in an indoor unit (20). However, the location of the expansion device (13) is not limited to the outdoor unit (10), and in various embodiments, the expansion device (13) may be placed in an indoor unit (20).

[0069] FIG. 1 illustrates an example in which one outdoor unit (10) and one indoor unit (20) are connected to each other, but the present disclosure is not limited thereto and one outdoor unit (10) and two or more indoor units (20) may be connected, or two or more outdoor units (10) and one indoor unit (20) may be connected, or two or more outdoor units (10) and two or more indoor units (20) may be connected.

[0070] The air conditioner (1) according to the embodiment described above with reference to FIG. 1 is merely an example of a device to which a compressor according to the concept of the present disclosure can be applied, and the concept of the present disclosure is not limited thereto.

[0071] FIG. 2 illustrates a cross-section of a compressor and an accumulator according to one embodiment of the present disclosure.

[0072] Referring to FIG. 2, a compressor (11) according to one embodiment of the present disclosure may include a compression section (including components such as a cylinder (100) and a roller (200)) configured to compress a refrigerant. A compressor (11) according to one embodiment of the present disclosure may include a drive motor (40) provided to provide power to the compression section. A compressor (11) according to one embodiment of the present disclosure may include a housing (30) that accommodates the compression section and the drive motor (40).

[0073] The housing (30) can form the exterior of the compressor (11). The housing (30) can be provided to accommodate the components of the compressor (11). Inside the housing (30), a receiving space (S) can be formed to accommodate the compressor and the drive motor (40).

[0074] The housing (30) may be provided to receive oil. The housing (30) may be provided to store oil. The oil can reduce friction between the various members of the compressor (11) and lubricate the various members of the compressor (11).

[0075] A compressor inlet pipe (PI) may be connected to the inlet side of the housing (30). The housing (30) may be connected to the accumulator (15) by the compressor inlet pipe (PI). The compressor inlet pipe (PI) may be provided to guide the refrigerant flowing from the accumulator (15) into the housing (30). The compressor inlet pipe (PI) is connected to the cylinder (100), and the refrigerant guided by the compressor inlet pipe (PI) may flow into the cylinder chamber (110) inside the cylinder (100).

[0076] For example, if the compressor (11) includes an upper cylinder (100a) and a lower cylinder (100b), the compressor inlet pipe (PI) may include an upper cylinder inlet pipe (PI1) connected to the upper cylinder (100a) and a lower cylinder inlet pipe (PI2) connected to the lower cylinder (100b).

[0077] A compressor discharge pipe (PO) may be connected to the discharge side of the housing (30). The compressor discharge pipe (PO) may discharge the refrigerant compressed within the housing (30). The discharge pipe (PO) may be provided to guide the refrigerant discharged from inside the housing (30) to outside the housing (30). The compressor discharge pipe (P0) may be provided to guide the refrigerant within the receiving space (S) of the housing (30) to be discharged to outside the housing (30).

[0078] For example, the compressor inlet pipe (PI) can be connected to the lower part of the housing (30). For example, the compressor outlet pipe (PO) can be connected to the upper part of the housing (30).

[0079] For example, the housing (30) may include a base (31), a side frame (32), and a top cover (33). The base (31) may form the lower exterior of the housing (30). The side frame (32) may form the side wall of the housing (30). The top cover (33) may form the upper exterior of the housing (30). At least a portion of the base (31), the side frame (32), and the top cover (33) may be detachably connected. At least a portion of the base (31), the side frame (32), and the top cover (33) may be formed integrally.

[0080] The drive motor (40) can generate power. The drive motor (40) can generate rotational force. The drive motor (40) can convert electromagnetic force into mechanical rotational force.

[0081] The drive motor (40) may include a stator (41) fixed to the housing (30) and a rotor (42) rotatable relative to the stator (41). The stator (41) may include a stator core and a coil wound around the stator core. The rotor (42) may include a plurality of magnets. In the drawings, an inner rotor type drive motor (40) is shown in which the rotor (42) is positioned inside the stator (41), but the present disclosure is not limited thereto. The drive motor (40) may also be an outer rotor type in which the rotor (42) is positioned outside the stator (41). As long as the drive motor (40) can generate power, there is no restriction on the type of drive motor (40).

[0082] For example, the drive motor (40) can be placed on the compression section.

[0083] The compressor (11) may include a rotating shaft (50). The rotating shaft (50) may be provided to transmit power generated from the drive motor (40) to the compression section. The rotating shaft (50) may be provided to connect the drive motor (40) and the compression section. The rotating shaft (50) may be connected to the rotor (42). The rotating shaft (50) may be fixed to the rotor (42) and provided to rotate together with the rotor (42). The rotating shaft (50) may be connected to the roller (200) of the compression section, which will be described later. The rotating shaft (50) may be provided to provide rotational force to the roller (200). For example, the rotating shaft (50) may be provided to transmit rotational force to the upper roller (200a) and the lower roller (200b).

[0084] The rotating shaft (50) can be extended along the vertical direction (V). The rotating shaft (50) can be extended along the up-down direction. The rotating shaft (50) can be extended along the direction of gravity. The rotating shaft (50) can be extended along the height direction of the compressor (11).

[0085] A rotating shaft (50) may be provided to penetrate the components of the compression section. For example, the rotating shaft (50) may be provided to penetrate the muffler (500), cylinder cover (400), cylinder (100), and roller (200) in an approximately vertical direction (V). For example, the rotating shaft (50) may be provided to penetrate the upper muffler (500a), upper cylinder cover (400a), upper cylinder (100a), upper roller (200a), mid plate (70), lower cylinder (100b), lower roller (200b), lower cylinder cover (400b), and lower muffler (500b) in an approximately vertical direction (V).

[0086] The compressor (11) may include a cam (60). The cam (60) may be provided on the outer surface of the rotating shaft (50). The cam (60) may be provided to transmit the rotational force of the rotating shaft (50) to the compression section.

[0087] The compressor (11) may include at least one cylinder (100), at least one roller (200), at least one vane (300), at least one cylinder cover (400), at least one muffler (500), and at least one cam (60). In the drawing, the cylinder (100), roller (200), vane (300), cylinder cover (400), muffler (500), and cam (60) are each described as having two of each. However, the drawing merely illustrates an example of the compressor (11). As an example, the compressor (11) may include one cylinder (100), one roller (200), one vane (300), one cylinder cover (400), one muffler (500), and one cam (60). For example, the compressor (11) may include three or more cylinders (100), three or more rollers (200), three or more vanes (300), three or more cylinder covers (400), three or more mufflers (500), and three or more cams (60).

[0088] Meanwhile, the expressions "upper ~" and "lower ~" may be used to distinguish between multiple components included in the compressor (11). In the components where the expression "upper ~" is used, the reference numeral 'a' may be added, and in the components where the expression "lower ~" is used, the reference numeral 'b' may be added. For example, if the compressor (11) includes two cylinders (100), the cylinder positioned relatively higher among the two cylinders may be referred to as the upper cylinder (100a), and the cylinder positioned relatively lower among the two cylinders may be referred to as the lower cylinder (100b). If there is no need to distinguish between multiple components included in the compressor (11), the expressions "upper ~" and "lower ~" may not be used. For example, the description of the cylinder (100) may be a description common to both the upper cylinder (100a) and the lower cylinder (100b). In addition, the above description applies not only to the cylinder (100) but also to the roller (200), vane (300), cylinder cover (400), muffler (500), and cam (60).

[0089] In other words, the description of the cylinder (100) can be applied to the upper cylinder (100a) and the lower cylinder (100b), respectively. The description of the roller (200) can be applied to the upper roller (200a) and the lower roller (200b), respectively. The description of the vane (300) can be applied to the upper vane (300a) and the lower vane (300b), respectively. The description of the cylinder cover (400) can be applied to the upper cylinder (400a) and the lower cylinder (400b), respectively. The description of the muffler (500) can be applied to the upper muffler (500a) and the lower muffler (500b), respectively. The description of the cam (60) can be applied to the upper cam (60a) and the lower cam (60b), respectively.

[0090] FIG. 3 illustrates a partial configuration of a compressor according to one embodiment of the present disclosure. FIG. 4 illustrates a partial configuration of the compressor shown in FIG. 3 in a direction different from that shown in FIG. 3. FIG. 5 illustrates an exploded view of a partial configuration of a compressor according to one embodiment of the present disclosure. FIG. 6 illustrates an exploded view of a partial configuration of the compressor shown in FIG. 4. FIG. 7 illustrates a cross-section along the line A-A' indicated in FIG. 3. FIG. 8 illustrates a cross-section along the line B-B' indicated in FIG. 3.

[0091] Referring to FIGS. 3 through 8, a portion of the compressor (11) is described. An example is described in which there are two cylinders (100), rollers (200), vanes (300), cylinder covers (400), mufflers (500), and cams (60). However, as described above, the present disclosure is not limited to such examples.

[0092] The compressor (11) may include at least one cylinder (100).

[0093] The cylinder (100) may include a cylinder chamber (110). The cylinder chamber (110) may contain a refrigerant. Refrigerant discharged from an accumulator (15, see FIG. 1 and FIG. 2) may flow into the cylinder chamber (110) and be compressed in the cylinder chamber (110). The cylinder chamber (110) may be formed inside the cylinder (100). For example, the cylinder (100) may have a ring shape, and the cylinder chamber (110) may be formed in the inner part of the ring shape of the cylinder (100). The cylinder chamber (110) may include an inlet chamber (111) into which the refrigerant flows, and a compression chamber (112) into which the inlet refrigerant is compressed.

[0094] The cylinder (100) may include an inlet section (120) into which refrigerant flows. The inlet section (120) may be connected to a compressor inlet pipe (PI, see FIG. 2). Refrigerant flowing along the compressor inlet pipe (PI) may flow into the cylinder chamber (110) through the inlet section (120). The inlet section (120) may be provided to communicate with the cylinder chamber (110). Specifically, the inlet section (120) may be provided to communicate with the inlet chamber (111) of the cylinder chamber (110).

[0095] For example, the compressor (11) may include an upper cylinder (100a) and a lower cylinder (100b). The upper cylinder (100a) may be positioned above the lower cylinder (100b). The lower cylinder (100b) may be positioned below the upper cylinder (100a).

[0096] A mid plate (70) may be provided between the upper cylinder (100a) and the lower cylinder (100b).

[0097] The upper cylinder (100a) may include an upper cylinder chamber (110a). The upper cylinder chamber (110a) may include an upper inlet chamber (111a) into which refrigerant is introduced and an upper compression chamber (112a) into which the introduced refrigerant is compressed. The upper cylinder chamber (110a) may be formed on the inner side of the upper cylinder (100a). For example, the upper cylinder chamber (110a) may be defined as a space enclosed by the outer surface of the upper roller (200a), the inner surface of the upper cylinder (100a), the upper cylinder cover (400a), and the mid plate (70).

[0098] The upper cylinder (100a) may include an upper inlet (120a) into which refrigerant is introduced. The upper inlet (120a) may be connected to an upper cylinder inlet pipe (PI1, see FIG. 2). The upper inlet (120a) may be in communication with an upper cylinder chamber (110a). The upper inlet (120a) may be in communication with an upper inlet chamber (111a).

[0099] The lower cylinder (100b) may include a lower cylinder chamber (110b). The lower cylinder chamber (110b) may include a lower inlet chamber (111b) into which refrigerant is introduced and a lower compression chamber (112b) into which the introduced refrigerant is compressed. The lower cylinder chamber (110b) may be formed inside the lower cylinder (100b). For example, the lower cylinder chamber (110b) may be defined as a space enclosed by the outer surface of the lower roller (200b), the inner surface of the lower cylinder (100b), the lower cylinder cover (400b), and the mid plate (70).

[0100] The lower cylinder (100b) may include a lower inlet (120b) into which refrigerant is introduced. The lower inlet (120b) may be connected to a lower cylinder inlet pipe (PI2, see FIG. 2). The lower inlet (120b) may be in communication with a lower cylinder chamber (110b). The lower inlet (120b) may be in communication with a lower inlet chamber (111b).

[0101] The compressor (11) may include a mid plate (70) positioned between the upper cylinder (100a) and the lower cylinder (100b).

[0102] The mid plate (70) may be positioned below the upper cylinder (100a) to cover the lower side of the upper cylinder chamber (110a). The mid plate (70) may be positioned above the lower cylinder (100a) to cover the upper side of the lower cylinder chamber (110b). The mid plate (70) may be provided to partition the upper cylinder chamber (110a) and the lower cylinder chamber (110b).

[0103] The mid plate (70) may be coupled to the upper cylinder (100a) and / or the lower cylinder (100b). For example, the mid plate (70) may be screw-coupled to the upper cylinder (100a) and / or the lower cylinder (100b). However, the present disclosure is not limited to the examples described above, and the mid plate (70) may be coupled to the upper cylinder (100a) and / or the lower cylinder (100b) through various known coupling methods.

[0104] The compressor (11) may include at least one roller (200). For example, the number of rollers (200) may correspond to the number of cylinders (100).

[0105] The roller (200) may be rotatably provided in the cylinder chamber (110). The roller (200) may be provided to compress the refrigerant flowing into the cylinder chamber (110) as it rotates in the cylinder chamber (110). The roller (200) may receive rotational force from the rotating shaft (50). The roller (200) may be eccentrically offset from the central axis of the rotating shaft (50) by a cam (60). The roller (200) may rotate around the eccentric axis.

[0106] The roller (200) may have a ring shape. The outer diameter of the roller (200) may be smaller than the inner diameter of the cylinder (100). The outer surface of the roller (200) may rotate while in contact with the inner surface of the cylinder (100).

[0107] For example, the compressor (11) may include an upper roller (200a) and a lower roller (200b). The upper roller (200a) may be positioned above the lower roller (200b). The lower roller (200b) may be positioned below the upper roller (200a).

[0108] The upper roller (200a) may be rotatably provided in the upper cylinder chamber (110a). The upper roller (200a) may be provided to compress the refrigerant flowing into the upper cylinder chamber (110a) as it rotates. The upper roller (200a) may be provided to rotate eccentrically by means of an upper cam (60a) formed on the outer surface of the rotating shaft (50).

[0109] The lower roller (200b) may be rotatably provided in the lower cylinder chamber (110b). The lower roller (200b) may be provided to compress the refrigerant flowing into the lower cylinder chamber (110b) as it rotates. The lower roller (200b) may be provided to rotate eccentrically by means of a lower cam (60b) formed on the outer surface of the rotating shaft (50).

[0110] The compressor (11) may include a rotating shaft (50).

[0111] The rotating shaft (50) may include a shaft body (51), an intake hole (53), and an exhaust hole (54).

[0112] The shaft body (51) can form an oil passage (52). The shaft body (51) may have a hollow shape so that oil can flow inside the shaft body (51). The oil passage (52) may extend along the longitudinal direction of the shaft body (51). The oil passage (52) may extend along the approximately vertical direction (V).

[0113] A suction hole (53) may be formed at the lower end of the shaft body (51). A suction hole (53) may be provided at one end of the oil passage (52). A suction hole (53) may be provided to suck oil contained in the housing (30) into the oil passage (52). A suction hole (53) may be opened toward the bottom of the housing (30).

[0114] For example, the rotating shaft (50) may include a paddle (55) provided inside the shaft body (51) and a pickup member (56) provided in the suction hole (53) to suck oil contained in the housing (30). However, the present disclosure is not limited to the example described above, and the rotating shaft (50) may suck oil through various known methods.

[0115] The discharge hole (54) may be provided to discharge oil flowing along the oil passage (52). The discharge hole (54) may be connected to the oil passage (52) of the shaft body (51) and the outer surface of the shaft body (51). The oil discharged through the discharge hole (54) may flow into the compression components of the compressor (11).

[0116] The rotating shaft (50) may include a plurality of discharge holes (54). The plurality of discharge holes (54) may be spaced apart along the longitudinal direction of the oil passage (52). The plurality of discharge holes (54) may be spaced apart along the approximately vertical direction (V). However, the present disclosure is not limited thereto, and the rotating shaft (50) may include a single discharge hole (54) depending on the case.

[0117] The compressor (11) may include at least one cam (60). For example, the number of cams (60) may correspond to the number of rollers (200). For example, the number of cams (60) may correspond to the number of cylinders (100).

[0118] The cam (60) may be formed on the outer surface of the rotating shaft (50). The cam (60) may be positioned eccentrically from the central axis of the rotating shaft (50). The cam (60) may be coupled to the inner surface of the roller (200). For example, most of the outer surface of the cam (60) may be in contact with most of the inner surface of the roller (200).

[0119] The cam (60) may be provided to rotate the roller (200) eccentrically. As the cam (60) is positioned eccentrically with respect to the central axis of the rotating shaft (50), the roller (200) coupled to the cam (60) may also be positioned eccentrically with respect to the central axis of the rotating shaft (50). Thus, the cam (60) and the roller (200) can rotate eccentrically with respect to the central axis of the rotating shaft (50), and as the roller (200) rotates, it can compress the refrigerant in the cylinder chamber (110).

[0120] Meanwhile, although it has been described that the cam (60) is a separate component from the rotating shaft (50), the cam (60) may be provided as a component of the rotating shaft (50). That is, the rotating shaft (50) may include the cam (60). In this case, the cam (60) can be understood as being formed on the outer surface of the shaft body (51).

[0121] For example, the compressor (11) may include an upper cam (60a) and a lower cam (60b). The upper cam (60a) may be positioned above the lower cam (60b). The lower cam (60b) may be positioned below the upper cam (60a).

[0122] The upper cam (60a) may correspond to the upper roller (200a). The upper cam (60a) may be coupled to the inner surface of the upper roller (200a) to rotate the upper roller (200a) eccentrically.

[0123] The lower cam (60b) may correspond to the lower roller (200b). The lower cam (60b) may be coupled to the inner surface of the lower roller (200b) to eccentrically rotate the lower roller (200b).

[0124] In one embodiment, the upper cam (60a) and the lower cam (60b) may be eccentrically positioned in opposite directions with respect to the central axis of the rotating shaft (50). Additionally, the upper roller (200a) and the lower roller (200b) may be eccentrically positioned in opposite directions with respect to the central axis of the rotating shaft (50). Accordingly, the phase when the refrigerant in the upper cylinder chamber (110a) is compressed by the upper roller (200a) and the phase when the refrigerant in the lower cylinder chamber (110b) is compressed by the lower roller (200b) may be opposite to each other.

[0125] The compressor (11) may include at least one vane (300). For example, the number of vanes (300) may correspond to the number of rollers (200). For example, the number of vanes (300) may correspond to the number of cylinders (100).

[0126] The vane (300) may be positioned inside the cylinder (100). The vane (300) may be provided to partition the cylinder chamber (110). The vane (300) may partition the cylinder chamber (110) into an inlet chamber (111) into which the refrigerant is introduced and a compression chamber (112) into which the refrigerant is compressed. The vane (300) may be provided to be movable in conjunction with the rotation of the roller (200). One end of the vane (300) may be connected to the cylinder (100), and the other end of the vane (300) may be connected to the roller (200).

[0127] For example, the compressor (11) may include an upper vane (300a) and a lower vane (300b). The upper vane (300a) may be positioned above the lower vane (300b). The lower vane (300b) may be positioned below the upper vane (300a).

[0128] The upper vane (300a) may be positioned inside the upper cylinder (100a). The upper vane (300a) may be provided to partition the upper cylinder chamber (110a). The upper vane (300a) may be provided to partition the upper cylinder chamber (110a) into an upper inlet chamber (111a) and an upper compression chamber (112a). The upper vane (300a) may be provided to be movable in conjunction with the rotation of the upper roller (200a). One end of the upper vane (300a) may be connected to the upper cylinder (100a), and the other end of the upper vane (300a) may be connected to the upper roller (200a).

[0129] The upper vane (300a) can be movably installed on the upper cylinder (100a). The upper vane (300a) is connected to an elastic member (E) and can be arranged to contact the outer surface of the upper roller (200a) by means of elastic force, regardless of the position of the upper roller (200a) inside the upper cylinder (100a).

[0130] The lower vane (300b) may be positioned inside the lower cylinder (100b). The lower vane (300b) may be provided to partition the lower cylinder chamber (110b). The lower vane (300b) may be provided to partition the lower cylinder chamber (110b) into a lower inlet chamber (111b) and a lower compression chamber (112b). The lower vane (300b) may be provided to be movable in conjunction with the rotation of the lower roller (200b). One end of the lower vane (300b) may be connected to the lower cylinder (100b), and the other end of the lower vane (300b) may be connected to the lower roller (200b).

[0131] The lower vane (300b) can be movably installed on the lower cylinder (100b). The lower vane (300b) can be connected to an elastic member (E) and arranged to contact the outer surface of the lower roller (200b) by means of elastic force, regardless of the position of the lower roller (200b) inside the lower cylinder (100b).

[0132] The compressor (11) may include at least one cylinder cover (400). For example, the number of cylinder covers (400) may correspond to the number of cylinders (100).

[0133] The cylinder cover (400) may be provided to cover at least a portion of the cylinder chamber (110). The cylinder cover (400) may include a cover body (410) and a support member (420) extending from the cover body (410) and provided to support a shaft.

[0134] For example, the compressor (11) may include an upper cylinder cover (400a) and a lower cylinder cover (400b). The upper cylinder cover (400a) may be placed over the lower cylinder cover (400b). The lower cylinder cover (400b) may be placed under the upper cylinder cover (400a).

[0135] The upper cylinder cover (400a) may be placed over the upper cylinder (100a). The upper cylinder cover (400a) may be provided to cover the upper side of the upper cylinder chamber (110a). The upper cylinder cover (400a) may include an upper cover body (410a) and an upper support member (420a). The upper cover body (410a) may be coupled to the upper cylinder (100a). The upper support member (420a) may extend upward from the upper cover body (410a). The upper support member (420a) may be provided to support the rotation shaft (50). The upper support member (420a) may be provided to surround a portion of the outer surface of the rotation shaft (50). The upper support member (420a) may function as a bearing that rotatably supports the rotation shaft (50).

[0136] The upper cylinder cover (400a) may include an upper connection hole (411a) that connects the interior of the upper cylinder chamber (110a) and the upper muffler (500a). The refrigerant compressed in the upper cylinder chamber (110a) may flow to the upper muffler (500a) through the upper connection hole (411a). For example, the upper connection hole (411a) may be formed by penetrating the upper cover body (410a).

[0137] The lower cylinder cover (400b) may be positioned below the lower cylinder (100b). The lower cylinder cover (400b) may be provided to cover the lower side of the lower cylinder chamber (110b). The lower cylinder cover (400b) may include a lower cover body (410b) and a lower support member (420b). The lower cover body (410b) may be coupled to the lower cylinder (100b). The lower support member (420b) may extend downward from the lower cover body (410b). The lower support member (420b) may be provided to support the rotating shaft (50). The lower support member (420b) may be provided to surround a portion of the outer surface of the rotating shaft (50). The lower support (420b) can function as a bearing that rotatably supports the rotating shaft (50).

[0138] The lower cylinder cover (400b) may include a lower connection hole (411b) that connects the interior of the lower cylinder chamber (110b) and the lower muffler (500b). The refrigerant compressed in the lower cylinder chamber (110b) may flow to the lower muffler (500b) through the lower connection hole (411b). For example, the lower connection hole (411b) may be formed by penetrating the lower cover body (410b).

[0139] The compressor (11) may include at least one valve (800). For example, the number of valves (800) may correspond to the number of cylinders (100).

[0140] A valve (800) may be provided in the cylinder cover (400) to allow or block the flow of refrigerant. The valve (800) may allow the flow of refrigerant based on whether the pressure of the refrigerant is above a certain level, and block the flow of refrigerant based on whether the pressure of the refrigerant is below a certain level.

[0141] For example, the compressor (11) may include an upper valve (800a) and a lower valve (800b). The upper valve (800a) may be positioned above the lower valve (800b). The lower valve (800b) may be positioned below the upper valve (800a).

[0142] An upper valve (800a) may be provided to open and close an upper connection hole (411a) of an upper cylinder cover (400a). The upper valve (800a) may open the upper connection hole (411a) based on the pressure of the refrigerant in the upper cylinder chamber (110a) being above a certain level. The upper valve (800a) may close the upper connection hole (411a) based on the pressure of the refrigerant in the upper cylinder chamber (110a) being below a certain level.

[0143] A lower valve (800b) may be provided to open and close a lower connection hole (411b) of a lower cylinder cover (400b). The lower valve (800b) may open the lower connection hole (411b) based on the pressure of the refrigerant in the lower cylinder chamber (110b) being above a certain level. The lower valve (800b) may close the lower connection hole (411b) based on the pressure of the refrigerant in the lower cylinder chamber (110b) being below a certain level.

[0144] The compressor (11) may include at least one muffler (500). For example, the number of mufflers (500) may correspond to the number of cylinders (100). For example, the number of mufflers (500) may correspond to the number of cylinder covers (400).

[0145] The muffler (500) may be provided to reduce noise generated when compressed refrigerant flows. The muffler (500) may be provided to receive refrigerant flowing out from the cylinder cover (400).

[0146] For example, the compressor (11) may include an upper muffler (500a) and a lower muffler (500b). The upper muffler (500a) may be positioned above the lower muffler (500b). The lower muffler (500b) may be positioned below the upper muffler (500a).

[0147] The upper muffler (500a) may be placed over the upper cylinder chamber (110a). The upper muffler (500a) may be placed over the upper cylinder (100a). The upper muffler (500a) may be placed over the upper cylinder cover (400a). The upper muffler (500a) may cover the upper cylinder cover (400a). The upper muffler (500a) may be coupled to the upper cylinder cover (400a) and / or the upper cylinder (100a).

[0148] The upper muffler (500a) can reduce noise generated when the refrigerant compressed in the upper cylinder chamber (110a) passes through the upper cylinder (400a). Generally, when high-pressure refrigerant is discharged through a narrow hole, the noise can be excessively loud. While the upper muffler (500a) covers the upper cylinder cover (400a), an upper muffler chamber can be formed between the upper muffler (500a) and the upper cylinder cover (400a). The upper muffler chamber can be formed to have a relatively larger width and volume compared to the upper cylinder chamber (110a) and the upper connection hole (411a). As a result, while the refrigerant compressed in the upper cylinder chamber (110a) flows into the upper muffler chamber through the upper connection hole (411a), the speed and pressure of the refrigerant are reduced, thereby reducing noise.

[0149] The upper muffler (500a) may include a discharge section (510) for discharging refrigerant. Refrigerant within the upper muffler (500a) may be discharged to the outside of the compression section through the discharge section (510). Additionally, as will be described later, refrigerant within the lower muffler (500b) may also flow into the upper muffler (500a) and then be discharged to the outside of the compression section through the discharge section (510).

[0150] The lower muffler (500b) may be positioned below the lower cylinder chamber (110b). The lower muffler (500b) may be positioned below the lower cylinder (100b). The lower muffler (500b) may be positioned below the lower cylinder cover (400b). The lower muffler (500b) may cover the lower cylinder cover (400b). The lower muffler (500b) may be coupled to the lower cylinder cover (400b) and / or the lower cylinder (100b).

[0151] The lower muffler (500b) can reduce noise generated when the refrigerant compressed in the lower cylinder chamber (110b) passes through the lower cylinder (400b). Generally, when high-pressure refrigerant is discharged through a narrow hole, the noise can be excessively loud. While the lower muffler (500b) covers the lower cylinder cover (400b), a lower muffler chamber can be formed between the lower muffler (500b) and the lower cylinder cover (400b). The lower muffler chamber can be formed to have a relatively larger width and volume compared to the lower cylinder chamber (110b) and the lower connection hole (411b). Thus, while the refrigerant compressed in the lower cylinder chamber (110b) flows into the lower muffler chamber through the lower connection hole (411b), the speed and pressure of the refrigerant are reduced, thereby reducing noise.

[0152] Next, with reference to FIGS. 7 and FIGS. 8, an example of refrigerant flow is described. In FIGS. 7 and FIGS. 8, the refrigerant flow is indicated by a dashed arrow.

[0153] Refrigerant can be introduced into the upper cylinder (100a). Refrigerant can be introduced into the upper cylinder chamber (110a) through the upper inlet (120a, see FIG. 3, FIG. 4 and FIG. 5). As the upper roller (200a) rotates in the upper cylinder chamber (110a), the refrigerant inside the upper cylinder chamber (110a) can be compressed. When the pressure of the compressed refrigerant is above a certain level, the upper valve (800a) can open the upper connection hole (411a). The compressed refrigerant can be introduced into the upper muffler (500a) through the opened upper connection hole (411a). The refrigerant introduced into the upper muffler (500a) can be discharged through the discharge part (510, see FIG. 3 and FIG. 5) of the upper muffler (500a).

[0154] Refrigerant can be introduced into the lower cylinder (100b). Refrigerant can be introduced into the lower cylinder chamber (110b) through the lower inlet (120b, see FIG. 3, FIG. 4 and FIG. 5). As the lower roller (200b) rotates in the lower cylinder chamber (110b), the refrigerant in the lower cylinder chamber (110b) can be compressed. When the pressure of the compressed refrigerant is above a certain level, the lower valve (800b) can open the lower connection hole (411b). The compressed refrigerant can be introduced into the lower muffler (500b) through the opened lower connection hole (411b). The refrigerant in the lower muffler (500b) can flow into the upper muffler (500a) along the connection path (90). The connecting passage (90) can connect the upper muffler chamber and the lower muffler chamber. For example, the connecting passage (90) can be formed by overlapping the hole (402) formed in the lower cylinder cover (400b), the hole (102) formed in the lower cylinder (100b), the hole (71) formed in the mid plate (70), the hole (101) formed in the upper cylinder (100a), and the hole (401) formed in the upper cylinder cover (400a) (see FIG. 5). The refrigerant introduced into the upper muffler (500a) through the connecting passage (90) can be discharged through the discharge portion (510, see FIG. 3 and FIG. 5) of the upper muffler (500a).

[0155] The compressor (11) may include at least one valve (800). In the drawing, two valves (800) are described as an example. However, the drawing merely illustrates an example of the compressor (11). For example, the compressor (11) may include one valve (800). For example, the compressor (11) may include three or more valves (800).

[0156] Meanwhile, the expressions "upper ~" and "lower ~" may be used to distinguish between multiple components included in the compressor (11). In the components where the expression "upper ~" is used, the reference numeral 'a' may be added, and in the components where the expression "lower ~" is used, the reference numeral 'b' may be added. For example, if the compressor (11) includes two valves (800), the valve positioned relatively higher among the two valves may be referred to as the upper valve (800a), and the valve positioned relatively lower among the two valves may be referred to as the lower valve (100b).

[0157] If there is no need to distinguish between the multiple components included in the compressor (11), the expressions “upper ~” and “lower ~” may not be used. For example, the description of the valve (800) may be a description common to both the upper valve (800a) and the lower valve (800b).

[0158] In other words, the description of the valve (800) can be applied to the upper valve (800a) and the lower valve (800b), respectively.

[0159] FIG. 9 illustrates a valve by disassembling the upper muffler of a compressor according to one embodiment of the present disclosure. FIG. 10 illustrates a valve of a compressor according to one embodiment of the present disclosure by disassembling it. FIG. 11 illustrates a cross-section along the line C-C' indicated in FIG. 9. FIG. 12 is a graph schematically illustrating the force applied to a valve having various thicknesses of a compressor according to one embodiment of the present disclosure and the resulting deformation amount. FIG. 13 is a graph schematically illustrating the efficiency according to the ratio of the spacer and the first valve while various loads are applied to a compressor according to one embodiment of the present disclosure.

[0160] Referring to FIGS. 9 to 13, a valve (800) of a compressor (11) according to one embodiment of the present disclosure will be described. For convenience of explanation, only the upper valve (800a) will be described, and the configuration of the upper valve (800a) may be applied in the same way to the lower valve (800b). However, if necessary, the configuration of the lower valve (800b) may have a configuration different from that of the upper valve (800a).

[0161] Referring to FIGS. 9 through 11, a compressor (11) according to one embodiment of the present disclosure may include an upper valve (800a) for opening and closing an upper connection hole (411a). The upper valve (800a) may be configured to open the upper connection hole (411a) based on the pressure of the compressed refrigerant. The upper valve (800a) may be configured to open the upper connection hole (411a) when the pressure inside the upper cylinder chamber (110a) is greater than a predetermined pressure, and to close the upper connection hole (411a) when the pressure inside the upper cylinder chamber (110a) is less than a predetermined pressure.

[0162] The upper cylinder cover (400a) may include an upper valve mounting portion (416a) for mounting an upper valve (800a). The upper valve (800a) may be accommodated in the upper valve mounting portion (416a). For example, the upper valve mounting portion (416a) may have a shape and / or size corresponding to the upper valve (800a). An upper connection hole (411a) may be provided in the upper valve mounting portion (416a).

[0163] For example, an upper valve (800a) may have a portion of it fixed to an upper valve mounting portion (416a) of an upper cylinder cover (400a) by an upper valve fixing portion (801a). The upper cylinder cover (400a) may include a mounting hole (412a) for mounting the upper valve (800a). The mounting hole (412a) may be provided in the upper valve mounting portion (416a). For example, the upper valve fixing portion (801a) may include a screw, and the mounting hole (412a) may be provided to have a screw thread corresponding to the upper valve fixing portion (801a).

[0164] The upper valve (800a) may include a first valve (810a). The first valve (810a) may include a material that can be deformed by the pressure inside the upper cylinder chamber (110a). For example, the first valve (810a) may include a flexible material. As an example, the first valve (810a) may include a material that can be deformed when the pressure inside the upper cylinder chamber (110a) is greater than a predetermined pressure, and can be restored when the pressure becomes less than the predetermined pressure.

[0165] The first valve (810a) may include a first valve fixing part (811a) fixed to the upper cylinder cover (400a) and a first valve cover part (813a) for opening and closing the upper connection hole (411a).

[0166] The first valve fixing part (811a) can be fixed to the upper cylinder cover (400a) by the upper valve fixing part (801a). The first valve fixing part (811a) may include a first valve hole (812a) for the upper valve fixing part (801a). At least one part of the upper valve fixing part (801a) may pass through the first valve hole (812a).

[0167] The first valve cover portion (813a) may be provided at one end and the opposite end of the first valve (810a) where the first valve fixing portion (811a) is located. The first valve cover portion (813a) may have a size and / or shape capable of covering the upper connection hole (411a).

[0168] The first valve (810a) may be configured such that the first valve cover portion (813a) is movable while the first valve fixing portion (811a) is fixed to the upper cylinder cover (400a). The first valve (810a) may be configured such that the first valve cover portion (813a) is movable as at least one part is deformed.

[0169] The first valve (810a) may be configured such that one end where the first valve fixing part (811a) is located is fixed, and the opposite end where the first valve cover part (813a) is located is movable. The first valve (810a) may be configured such that the portion between the first valve fixing part (811a) and the first valve cover part (813a) is deformable.

[0170] The upper valve (800a) may include a second valve (820a). The second valve (820a) may be located above the first valve (810a). The second valve (820a) may include a material that can be deformed by the pressure inside the upper cylinder chamber (110a). For example, the second valve (820a) may include a flexible material. As an example, the second valve (820a) may include a material that can be deformed when the pressure inside the upper cylinder chamber (110a) is greater than a predetermined pressure, and can be restored when the pressure becomes less than the predetermined pressure.

[0171] The second valve (820a) may include a second valve fixing part (821a) fixed to the upper cylinder cover (400a) and a second valve cover part (823a) provided to be movable together with the first valve cover part (813a).

[0172] The second valve fixing part (821a) can be fixed to the upper cylinder cover (400a) by the upper valve fixing part (801a). The second valve fixing part (821a) may include a second valve hole (822a) for the upper valve fixing part (801a). At least one part of the upper valve fixing part (801a) may pass through the second valve hole (822a).

[0173] The second valve cover portion (823a) may be provided at one end and the opposite end of the second valve (820a) where the second valve fixing portion (821a) is located. The second valve cover portion (823a) may have the same size and / or shape as the first valve cover portion (813a).

[0174] The second valve (820a) may be configured such that the second valve cover portion (823a) is movable while the second valve fixing portion (821a) is fixed to the upper cylinder cover (400a). The second valve (820a) may be configured such that the second valve cover portion (823a) is movable as at least one part is deformed.

[0175] The second valve (820a) may be configured such that one end where the second valve fixing part (821a) is located is fixed, and the opposite end where the second valve cover part (823a) is located is movable. The second valve (820a) may be configured such that the portion between the second valve fixing part (821a) and the second valve cover part (823a) is deformable.

[0176] For example, the second valve (820a) may have the same shape as the first valve (810a). For example, the second valve (820a) may have the same material as the first valve (810a).

[0177] The second valve (820a) may have a different thickness from the first valve (810a). For example, the second valve (820a) may have a thicker thickness than the first valve (810a). As the second valve (820a) has a thicker thickness than the first valve (810a), the second valve (820a) may be configured to be deformable only when an external force greater than the external force that deforms the first valve (810a) is applied.

[0178] The pressure required for the second valve (820a) to deform can be set to be greater than the pressure required for the first valve (810a) to deform. The second valve (820a) can be configured to deform when it receives a pressure greater than the pressure required for the first valve (810a) to deform.

[0179] For example, if the internal pressure of the upper cylinder chamber (110a) is a first pressure such that it is large enough to deform the first valve (810a) but not large enough to deform the second valve (820a), the first valve (810a) may move to a position where the first valve cover portion (813a) contacts the second valve cover portion (823a) of the second valve (820a), and the second valve cover portion (823a) of the second valve (820a) may not move.

[0180] For example, if the internal pressure of the upper cylinder chamber (110a) is a second pressure of a magnitude capable of deforming both the first valve (810a) and the second valve (820a), the first valve (810a) can move to a position where the first valve cover portion (813a) contacts the second valve cover portion (823a) of the second valve (820a), and the second valve cover portion (823a) of the second valve (820a) can move together with the first valve cover portion (813a) in a direction that opens the upper connection hole (411a).

[0181] Referring to FIG. 12, an upper valve (800a) according to one embodiment of the present disclosure includes a first valve (810a) and a second valve (820a), so the degree of deformation may change depending on the applied force.

[0182] For example, in the case of the first valve (810a), the amount of deformation may be large even if the applied force is relatively small, and in the case of the second valve (820a), the amount of deformation may be smaller than that of the first valve (810a) even if the applied force is relatively large. As an example, in order to have the same amount of deformation, a force greater than that applied to the first valve (810a) must be applied to the second valve (820a).

[0183] Meanwhile, an upper valve (800a) according to one embodiment of the present disclosure includes a first valve (810a) and a second valve (820a). For example, until the first valve (810a) and the second valve (820a) come into contact, the upper valve (800a) may be deformed according to the rigidity of the first valve (810a) because only the first valve (810a) is deformed. For example, after the first valve (810a) and the second valve (820a) come into contact, the upper valve (800a) may be deformed according to the rigidity greater than that of the second valve (820a) because the first valve (810a) and the second valve (820a) are deformed together.

[0184] As the second valve (820a) has greater rigidity than the first valve (810a), the upper valve (800a) may not be delayed in closing the upper connection hole (411a), and shaking or vibration caused by the internal pressure of the upper cylinder chamber (110a) may be reduced, and breakage may be reduced.

[0185] The upper valve (800a) may include a spacer (830a). The spacer (830a) may be positioned between the first valve (810a) and the second valve (820a). The spacer (830a) may be provided to space the second valve (820a) apart from the first valve (810a).

[0186] The spacer (830a) may include a spacer body (831a) and a spacer hole (832a) formed through the spacer body (831a). The upper valve fixing part (801a) may be provided such that at least a portion of it can pass through the spacer hole (832a) of the spacer (830a). As the upper valve fixing part (801a) is coupled to the spacer hole (832a), the spacer (830a) can be fixed to the upper cylinder cover (400a).

[0187] As the spacer (830a) is provided to separate the first valve (810a) and the second valve (820a), the second valve (820a) may be provided to deform after the first valve (810a) has been deformed by a predetermined amount. As the spacer (830a) is provided to separate the first valve (810a) and the second valve (820a), the upper valve (800a) can reduce the movement of the first valve (810a) and the second valve (820a) together without contacting each other due to the adhesive force of the oil.

[0188] For example, the spacer (830a) may have a thickness greater than that of the first valve (810a). For example, the spacer (830a) may have a thickness greater than that of the second valve (820a).

[0189] Referring to FIG. 13, the efficiency of a compressor (11) according to one embodiment of the present disclosure can be changed according to the thickness ratio of the first valve (810a) of the upper valve (800a) and the spacer (830a).

[0190] For example, while the compressor (11) is operating at a relatively low load, that is, when the rotational speed of the rotating shaft (50) by the drive motor (40) is relatively low, the efficiency of the compressor (11) can be improved when the thickness of the spacer (830a) is 2.4 times or more and 3.2 times or less than the thickness of the first valve (810a).

[0191] For example, when the compressor (11) is operating at a relatively high load, that is, when the rotational speed of the rotating shaft (50) driven by the drive motor (40) is relatively high, the efficiency of the compressor (11) can be improved when the thickness of the spacer (830a) is 2.4 times or more and 3.2 times or less than the thickness of the first valve (810a).

[0192] For example, while the compressor (11) is operating at a relatively medium load, that is, when the rotational speed of the rotating shaft (50) driven by the drive motor (40) is relatively medium, the efficiency of the compressor (11) can be improved when the thickness of the spacer (830a) is 2.4 times or more and 3.2 times or less than the thickness of the first valve (810a).

[0193] The upper valve (800a) may include a stopper (840a). The stopper (840a) may be located above the second valve (820a). The stopper (840a) may be provided to limit the degree of deformation of the second valve (820a). For example, the stopper (840a) may be provided to prevent the second valve (820a) from deforming beyond a predetermined degree when the second valve (820a) is deformed by the internal pressure of the upper cylinder chamber (110a). The stopper (840a) may have a bent shape to have a shape similar to the shape in which the second valve (820a) is deformed. The stopper (840a) may include a material having greater rigidity than the second valve (820a).

[0194] FIG. 14 illustrates an enlarged view of section D shown in FIG. 11. FIG. 15 illustrates a change in the state of the valve shown in FIG. 14 when the compressor according to one embodiment of the present disclosure is in a low-load state. FIG. 16 illustrates a change in the state of the valve shown in FIG. 14 when the compressor according to one embodiment of the present disclosure is in a high-load state.

[0195] Referring to FIG. 14, when the internal pressure of the upper cylinder chamber (110a) of the compressor (11) according to one embodiment of the present disclosure is lower than the first pressure, the first valve (810a) of the upper valve (800a) may close the upper connection hole (411a). When the internal pressure of the upper cylinder chamber (110a) is lower than the first pressure, the first valve (810a) may not deform. The first valve (810a) may be spaced apart from the second valve (820a).

[0196] Referring to FIG. 15, when the internal pressure of the upper cylinder chamber (110a) of the compressor (11) according to one embodiment of the present disclosure is higher than the first pressure, the first valve (810a) of the upper valve (800a) can open the upper connection hole (411a). When the internal pressure of the upper cylinder chamber (110a) is greater than the first pressure, the first valve (810a) can be deformed.

[0197] When the internal pressure of the upper cylinder chamber (110a) of the compressor (11) is lower than the second pressure which is greater than the first pressure, the second valve (820a) of the upper valve (800a) may not be deformed, and accordingly, the first valve (810a) may come into contact with the second valve (820a). The second valve (820a) may be separated from the stopper (840a).

[0198] Referring to FIG. 16, when the internal pressure of the upper cylinder chamber (110a) of the compressor (11) according to one embodiment of the present disclosure is higher than the second pressure, the second valve (820a) of the upper valve (800a) can be deformed together with the first valve (810a). Accordingly, the upper valve (800a) can open the upper connection hole (411a) more.

[0199] An upper valve (800a) according to one embodiment of the present disclosure includes a first valve (810a) and a second valve (820a) and a spacer (830a) for separating them from each other, so that the upper connection hole (411a) can be smoothly opened while the compressor (11) is operating at a relatively low load, and noise that may occur while operating at a relatively high load can be reduced and reliability improved.

[0200] For convenience of explanation, the upper valve (800a) has been described, but the configuration of the upper valve (800a) can be applied in the same way to the lower valve (800b).

[0201] FIG. 17 illustrates a disassembled valve of a compressor according to one embodiment of the present disclosure.

[0202] Referring to FIG. 17, a valve (1800) of a compressor according to one embodiment of the present disclosure will be described. In describing the valve (1800) shown in FIG. 17, the same reference numerals are assigned to components identical to those of the compressor (11) shown in FIG. 1 to FIG. 16, and detailed descriptions may be omitted.

[0203] Referring to FIG. 17, a compressor according to one embodiment of the present disclosure may include an upper cylinder cover (1400a). For convenience of explanation, only the upper cylinder cover (1400a) is described, but the cylinder cover (1400) of the compressor according to one embodiment of the present disclosure may include a lower cylinder cover, and the configuration of the upper cylinder cover (1400a) may be applied in the same way to the lower cylinder cover.

[0204] The upper cylinder cover (1400a) may include an upper cover body (1410a), a hole (401), an upper support part (420a), and an upper connection hole (411a).

[0205] The upper cover body (1410a) may include an upper valve mounting portion (1416a) for mounting an upper valve (1800a). The upper valve (1800a) may be accommodated in the upper valve mounting portion (1416a). For example, the upper valve mounting portion (1416a) may have a shape and / or size corresponding to the upper valve (1800a). An upper connection hole (411a) may be provided in the upper valve mounting portion (1416a).

[0206] For example, an upper valve (1800a) may have a portion of it fixed to an upper valve mounting portion (1416a) of an upper cylinder cover (1400a) by an upper valve fixing portion (801a). The upper cylinder cover (1400a) may include a mounting hole (1412a) for mounting the upper valve (1800a). The mounting hole (1412a) may be provided in the upper valve mounting portion (1416a). For example, the upper valve fixing portion (801a) may include a screw, and the mounting hole (1412a) may be provided to have a screw thread corresponding to the upper valve fixing portion (801a).

[0207] Referring to FIG. 17, a valve (1800) of a compressor according to one embodiment of the present disclosure may include an upper valve (1800a). For convenience of explanation, the upper valve (1800a) is described, but if the valve (1800) includes a lower valve, the configuration of the upper valve (1800a) may also be applied to the lower valve.

[0208] Referring to FIG. 17, an upper valve (1800a) according to one embodiment of the present disclosure may have a portion fixed to the upper valve mounting portion (1416a) of the upper cylinder cover (1400a) by the upper valve fixing portion (801a).

[0209] The upper valve (1800a) may include a first valve (810a), a second valve (1820a), a spacer (830a), and a stopper (840a). The configuration of the first valve (810a), the spacer (830a), and the stopper (840a) of the upper valve (1800a) shown in FIG. 17 may be provided in the same way as the configuration of the first valve (810a), the spacer (830a), and the stopper (840a) of the upper valve (800a) shown in FIG. 1 to FIG. 16.

[0210] The second valve (1820a) of the upper valve (1800a) may be located above the first valve (810a). The second valve (1820a) may include a deformable material. For example, the second valve (1820a) may include a flexible material. As an example, the second valve (1820a) may include a material that can be deformed and restored.

[0211] The second valve (1820a) may include a second valve fixing part (1821a) fixed to the upper cylinder cover (1400a) and a second valve cover part (1823a) provided to be movable together with the first valve cover part (813a).

[0212] The second valve fixing part (1821a) can be fixed to the upper cylinder cover (1400a) by the upper valve fixing part (801a). The second valve fixing part (1821a) may include a second valve hole (1822a) for the upper valve fixing part (801a). At least one part of the upper valve fixing part (801a) may pass through the second valve hole (1822a).

[0213] The second valve cover portion (1823a) may be provided at one end and the opposite end of the second valve (1820a) where the second valve fixing portion (1821a) is located. The second valve cover portion (1823a) may have the same size and / or shape as the first valve cover portion (813a).

[0214] The second valve (1820a) may be configured such that the second valve cover portion (1823a) is movable while the second valve fixing portion (1821a) is fixed to the upper cylinder cover (1400a). The second valve (1820a) may be configured such that the second valve cover portion (1823a) is movable as at least one part is deformed.

[0215] The second valve (1820a) may be configured such that one end where the second valve fixing part (1821a) is located is fixed, and the opposite end where the second valve cover part (1823a) is located is movable. The second valve (1820a) may be configured such that the portion between the second valve fixing part (1821a) and the second valve cover part (1823a) is deformable.

[0216] A second valve (1820a) according to one embodiment of the present disclosure may include a rotation limiting portion (1824a). The rotation limiting portion (1824a) may extend from the second valve fixing portion (1821a). The rotation limiting portion (1824a) may be located on the opposite side of one side of the second valve fixing portion (1821a) where the second valve cover portion (1823a) is located.

[0217] According to one embodiment of the present disclosure, the upper valve mounting portion (1416a) of the upper cylinder cover (1400a) may include a cover receiving portion (1417a) corresponding to the rotation limiting portion (1824a) of the second valve (1820a). When the upper valve (1800a) is mounted on the upper valve mounting portion (1416a), the rotation limiting portion (1824a) may be received in the cover receiving portion (1417a). The cover receiving portion (1417a) may have a size and / or shape corresponding to the rotation limiting portion (1824a).

[0218] According to one embodiment of the present disclosure, the upper valve (1800a) may have its rotation restricted by providing a rotation limiting part (1824a) on the second valve (1820a), and thus, its reliability may be improved.

[0219] In an upper valve (1800a) according to one embodiment of the present disclosure, when the first valve (810a) and the second valve (1820a) are provided with similar thicknesses, they have similar shapes and sizes except for the configuration of the rotation limiting portion (1824a) of the second valve (1820a), so the second valve (1820a) and the first valve (810a) can be distinguished through the rotation limiting portion (1824a).

[0220] According to one embodiment of the present disclosure, the cover receiving portion (1417a) of the upper cylinder cover (1400a) may be provided to have a step difference with respect to the bottom surface of the upper valve mounting portion (1416a). The cover receiving portion (1417a) may be provided to be located above the bottom surface of the upper valve mounting portion (1416a) by an amount equal to the thickness of the first valve (810a) and the thickness of the spacer (830a). With this configuration, when the second valve (1820a) is first assembled to the upper valve mounting portion (1416a), the second valve (1820a) may be obstructed by the upper valve mounting portion (1416a) and the cover receiving portion (1417a), thereby preventing it from being assembled in an incorrect manner.

[0221] FIG. 18 illustrates a disassembled valve of a compressor according to one embodiment of the present disclosure. FIG. 19 illustrates a disassembled stopper of a valve according to one embodiment of the present disclosure.

[0222] Referring to FIGS. 18 and 19, a valve (2800) of a compressor according to one embodiment of the present disclosure will be described. In describing the valve (2800) shown in FIGS. 18 and 19, the same reference numerals are assigned to components identical to the valve (800) shown in FIGS. 1 to 16, and detailed descriptions may be omitted.

[0223] Referring to FIGS. 18 and 19, a valve (2800) according to one embodiment of the present disclosure may include an upper valve (2800a). For convenience of explanation, the upper valve (2800a) is described, but if the valve (2800) includes a lower valve, the configuration of the upper valve (2800a) can be applied in the same way to the lower valve.

[0224] Referring to FIGS. 18 and 19, an upper valve (2800a) may be partially fixed to an upper valve mounting portion (416a) of an upper cylinder cover (400a) by an upper valve fixing portion (801a). The upper cylinder cover (400a) may include a mounting hole (412a) for mounting the upper valve (2800a). The mounting hole (412a) may be provided in the upper valve mounting portion (416a). For example, the upper valve fixing portion (801a) may include a screw, and the mounting hole (412a) may be provided to have a screw thread corresponding to the upper valve fixing portion (801a).

[0225] The upper valve (2800a) may include a stopper (840a) having the same configuration as the stopper (840a) of the upper valve (800a) shown in FIGS. 1 to 16.

[0226] The upper valve (2800a) may include a first valve (2810a). The first valve (2810a) may include a deformable material. For example, the first valve (2810a) may include a flexible material. As an example, the first valve (2810a) may include a material that can be deformed and restored.

[0227] The first valve (2810a) may include a first valve fixing part (2811a) fixed to the upper cylinder cover (400a) and a first valve cover part (2813a) for opening and closing the upper connection hole (411a).

[0228] The first valve fixing part (2811a) can be fixed to the upper cylinder cover (400a) by the upper valve fixing part (801a). The first valve fixing part (2811a) may include a first valve hole (2812a) for the upper valve fixing part (801a). At least one part of the upper valve fixing part (801a) may pass through the first valve hole (2812a).

[0229] The upper valve (2800a) may include a second valve (2820a). The second valve (2820a) may include a deformable material. For example, the second valve (2820a) may include a flexible material. As an example, the second valve (2820a) may include a material that can be deformed and restored.

[0230] The second valve (2820a) may include a second valve fixing part (2821a) fixed to the upper cylinder cover (400a) and a second valve cover part (2823a) for opening and closing the upper connection hole (411a).

[0231] The second valve fixing part (2821a) can be fixed to the upper cylinder cover (400a) by the upper valve fixing part (801a). The second valve fixing part (2821a) may include a second valve hole (2822a) for the upper valve fixing part (801a). At least one part of the upper valve fixing part (801a) may pass through the second valve hole (2822a).

[0232] The upper valve (2800a) may include a spacer (2830a). The spacer (2830a) may be positioned between the first valve (2810a) and the second valve (2820a). The spacer (2830a) may be provided to space the second valve (2820a) apart from the first valve (2810a).

[0233] The spacer (2830a) may include a spacer body (2831a) and a spacer hole (2832a) formed through the spacer body (2831a). The upper valve fixing part (801a) may be provided such that at least a portion of it can pass through the spacer hole (2832a) of the spacer (2830a). As the upper valve fixing part (801a) is coupled to the spacer hole (2832a), the spacer (2830a) can be fixed to the upper cylinder cover (400a).

[0234] A spacer (2830a) according to one embodiment of the present disclosure may include a rotation limiting portion (2833a) for limiting the rotation of a first valve (2810a) and a second valve (2820a). The rotation limiting portion (2833a) may be provided at both ends of the spacer (2830a). The rotation limiting portion (2833a) may extend toward both sides of the spacer (2830a) where the first valve (2810a) and the second valve (2820a) are located. The rotation limiting portion (2833a) of the spacer (2830a) may support the first valve fixing portion (2811a) of the first valve (2810a). The rotation limiting portion (2833a) of the spacer (2830a) can support the second valve fixing portion (2821a) of the second valve (2820a).

[0235] According to one embodiment of the present disclosure, the upper valve (2800a) can limit the rotation of the first valve (2810a) and the second valve (2820a) by providing a rotation limiting part (2833a) in the spacer (2830a), and thus, reliability can be improved.

[0236] FIG. 20 illustrates a disassembled valve of a compressor according to one embodiment of the present disclosure. FIG. 21 illustrates a disassembled stopper of a valve according to one embodiment of the present disclosure.

[0237] Referring to FIGS. 20 and 21, a valve (3800) of a compressor according to one embodiment of the present disclosure will be described. In describing the valve (3800) shown in FIGS. 20 and 21, the same reference numerals are assigned to components identical to the valve (800) shown in FIGS. 1 to 16, and detailed descriptions may be omitted.

[0238] Referring to FIGS. 20 and 21, a valve (3800) according to one embodiment of the present disclosure may include an upper valve (3800a). For convenience of explanation, the upper valve (3800a) is described, but if the valve (3800) includes a lower valve, the configuration of the upper valve (3800a) can be applied in the same way to the lower valve.

[0239] Referring to FIGS. 20 and 21, an upper valve (3800a) may be partially fixed to an upper valve mounting portion (416a) of an upper cylinder cover (400a) by an upper valve fixing portion (801a). The upper cylinder cover (400a) may include a mounting hole (412a) for mounting the upper valve (3800a). The mounting hole (412a) may be provided in the upper valve mounting portion (416a). For example, the upper valve fixing portion (801a) may include a screw, and the mounting hole (412a) may be provided to have a screw thread corresponding to the upper valve fixing portion (801a).

[0240] The upper valve (3800a) may include a stopper (840a) having the same configuration as the stopper (840a) of the upper valve (800a) shown in FIGS. 1 to 16.

[0241] The upper valve (3800a) may include a first valve (3810a). The first valve (3810a) may include a deformable material. For example, the first valve (3810a) may include a flexible material. As an example, the first valve (3810a) may include a material that can be deformed and restored.

[0242] The first valve (3810a) may include a first valve fixing part (3811a) fixed to the upper cylinder cover (400a) and a first valve cover part (3813a) for opening and closing the upper connection hole (411a).

[0243] The first valve fixing part (3811a) can be fixed to the upper cylinder cover (400a) by the upper valve fixing part (801a). The first valve fixing part (3811a) may include a first valve hole (3812a) for the upper valve fixing part (801a). At least one part of the upper valve fixing part (801a) may pass through the first valve hole (3812a).

[0244] The upper valve (3800a) may include a second valve (3820a). The second valve (3820a) may include a deformable material. For example, the second valve (3820a) may include a flexible material. As an example, the second valve (3820a) may include a material that can be deformed and restored.

[0245] The second valve (3820a) may include a second valve fixing part (3821a) fixed to the upper cylinder cover (400a) and a second valve cover part (3823a) for opening and closing the upper connection hole (411a).

[0246] The second valve fixing part (3821a) can be fixed to the upper cylinder cover (400a) by the upper valve fixing part (801a). The second valve fixing part (3821a) may include a second valve hole (3822a) for the upper valve fixing part (801a). At least one part of the upper valve fixing part (801a) may pass through the second valve hole (3822a).

[0247] The upper valve (3800a) may include a spacer (3830a). The spacer (3830a) may be positioned between the first valve (3810a) and the second valve (3820a). The spacer (3830a) may be provided to space the second valve (3820a) apart from the first valve (3810a).

[0248] The spacer (3830a) may include a spacer body (3831a) and a spacer hole (3832a) formed through the spacer body (3831a). The upper valve fixing part (801a) may be provided such that at least a portion of it can pass through the spacer hole (3832a) of the spacer (3830a). As the upper valve fixing part (801a) is coupled to the spacer hole (3832a), the spacer (3830a) can be fixed to the upper cylinder cover (400a).

[0249] A spacer (3830a) according to one embodiment of the present disclosure may include a rotation limiting portion (3833a) for limiting the rotation of a second valve (3820a). The rotation limiting portion (3833a) may be provided at both ends of the spacer (3830a). The rotation limiting portion (3833a) may extend toward one side of the spacer (3830a) where the second valve (2820a) is located. The rotation limiting portion (3833a) of the spacer (3830a) may support the second valve fixing portion (3821a) of the second valve (3820a).

[0250] The size of the second valve fixing part (3821a) of the second valve (3820a) may be provided to be smaller than the first valve fixing part (3811a) of the first valve (3810a). The distance between the two outer ends of the rotation limiting part (3833a) of the spacer (3830a) may be provided to be equal to the width of the first valve fixing part (3811a). The second valve fixing part (3821a) may be accommodated between the two inner ends of the rotation limiting part (3833a) of the spacer (3830a).

[0251] According to one embodiment of the present disclosure, the upper valve (3800a) can limit the rotation of the second valve (3820a) as the spacer (3830a) is provided with a rotation limiting part (3833a), and thus, reliability can be improved.

[0252] A compressor according to one embodiment includes a cylinder including a cylinder chamber, a cylinder cover including a connection hole (411) provided to discharge refrigerant from the cylinder chamber, and a valve assembly configured to open and close the connection hole (411). The valve assembly includes a first valve configured to be deformable, a second valve configured to be deformable and having a portion configured to be in contact with the first valve based on the internal pressure of the cylinder chamber, and a spacer configured to be disposed between the first valve and the second valve to separate the second valve from the first valve so that the second valve is deformed after the first valve is deformed based on the internal pressure of the cylinder chamber. The thickness of the spacer is 2.4 to 3.2 times the thickness of the first valve.

[0253] The first valve above may be deformable based on the pressure inside the cylinder chamber.

[0254] The second valve above may be deformable at a pressure greater than the pressure inside the cylinder chamber.

[0255] The valve assembly may be configured such that, based on the pressure inside the cylinder chamber being a first pressure value, the first valve is deformed to open the connection hole (411). The valve assembly may also be configured such that, based on the pressure inside the cylinder chamber being a second pressure value greater than the first pressure value, the second valve is deformed together with the first valve to increase the degree of opening of the connection hole (411).

[0256] The second valve may be configured to be restored based on the fact that the pressure inside the cylinder chamber is less than the second pressure. The first valve may be configured to be restored based on the fact that the pressure inside the cylinder chamber is less than the first pressure.

[0257] The thickness of the second valve may be thicker than the thickness of the first valve and thinner than the thickness of the spacer.

[0258] The first valve may include the same material as the second valve.

[0259] The first valve may include a first valve fixing part fixed to the cylinder cover and a first valve cover part for opening and closing the connection hole (411). The second valve may include a second valve fixing part fixed to the cylinder cover and a second valve cover part arranged to be spaced apart from the first valve cover part based on the pressure inside the cylinder chamber being lower than a predetermined pressure.

[0260] The above spacer may be positioned between the first valve fixing part and the second valve fixing part.

[0261] The second valve cover portion may be able to come into contact with the first valve cover portion based on the fact that the pressure inside the cylinder chamber is higher than a predetermined pressure.

[0262] The above valve assembly may include a stopper for limiting the degree of deformation of the second valve.

[0263] The above valve may further include a rotation limiting member for limiting the rotation of the second valve.

[0264] The rotation limiting member may be provided in the second valve. The cylinder cover may further include a cover receiving portion for accommodating the rotation limiting member.

[0265] The above rotation limiting part may be provided in the above spacer.

[0266] The above rotation limiting part may further include a part for limiting the rotation of the first valve.

[0267] A compressor according to one embodiment includes a cylinder including a cylinder chamber, a cylinder cover including a connection hole (411) provided to allow refrigerant to be discharged from the cylinder chamber, and a valve configured to open and close the connection hole (411). The valve includes a first valve, a second valve provided to be in contact with a portion of the first valve based on the internal pressure of the cylinder chamber, a spacer disposed between the first valve and the second valve to separate the second valve from the first valve, and a rotation limiting portion for limiting the rotation of the second valve.

[0268] The first valve may be deformable based on the pressure inside the cylinder chamber. The second valve may be deformable under pressure conditions greater than the pressure inside the cylinder chamber where the first valve is deformable.

[0269] The above valve may be configured such that when the pressure inside the cylinder chamber is a first pressure, the first valve deforms and opens the connection hole (411). The above valve may be configured such that when the pressure inside the cylinder chamber is a second pressure greater than the first pressure, the second valve deforms together with the first valve and increases the degree of opening of the connection hole (411).

[0270] The second valve may be configured to be restored when the pressure inside the cylinder chamber becomes lower than the second pressure. The first valve may be configured to be restored when the pressure inside the cylinder chamber becomes lower than the first pressure.

[0271] The above spacer may be provided to have a thickness of 2.4 times or more and 3.2 times or less the thickness of the first valve.

[0272] According to the concept of the present disclosure, the compressor comprises a first valve, a second valve having a thickness greater than that of the first valve, and a spacer for separating the first valve and the second valve from each other, so that the efficiency of the compressor can be improved while operating at a low load.

[0273] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below.

[0274] Specific embodiments have been illustrated and described above. However, the invention is not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the essence of the technical concept of the invention as described in the following claims.

Claims

1. A cylinder including a cylinder chamber; A cylinder cover including a connection hole provided to discharge refrigerant from the cylinder chamber; A valve assembly configured to open and close the above-mentioned connection hole; is included, The above valve assembly is, A first valve configured to be deformable; A second valve configured to be deformable and having a portion configured to be able to contact the first valve based on the internal pressure of the cylinder chamber; and A spacer configured to be positionable between the first valve and the second valve to separate the second valve from the first valve, so that the second valve is deformed after the first valve is deformed based on the internal pressure of the cylinder chamber; A compressor in which the thickness of the spacer is 2.4 to 3.2 times the thickness of the first valve.

2. In Paragraph 1, The first valve above is a compressor that can be deformed based on the pressure inside the cylinder chamber.

3. In Paragraph 2, The second valve above is a compressor capable of deformation at a pressure greater than the pressure inside the cylinder chamber.

4. In Paragraph 1, The above valve assembly is, Based on the fact that the pressure inside the cylinder chamber is a first pressure value, the first valve is deformed and the connection hole is opened, and A compressor configured such that, based on the fact that the pressure inside the cylinder chamber is a second pressure value greater than the first pressure value, the second valve is deformed together with the first valve and the degree of opening of the connection hole is increased.

5. In Paragraph 4, The second valve is configured to be restored based on the fact that the pressure inside the cylinder chamber is less than the second pressure value, and The first valve is a compressor configured to be restored based on the fact that the pressure inside the cylinder chamber is less than the first pressure value.

6. In Paragraph 1, A compressor in which the thickness of the second valve is thicker than the thickness of the first valve and thinner than the thickness of the spacer.

7. In Paragraph 1, The first valve above is a compressor comprising the same material as the second valve.

8. In Paragraph 1, The above-mentioned first valve is, A first valve fixing part fixed to the cylinder cover; and A first valve cover portion for opening and closing the above connection hole; is included, The above second valve is, A second valve fixing part fixed to the cylinder cover; and A compressor comprising: a second valve cover portion arranged to be spaced apart from the first valve cover portion based on the fact that the pressure inside the cylinder chamber is lower than a predetermined pressure.

9. In Paragraph 8, The above spacer is a compressor that can be placed between the first valve fixing part and the second valve fixing part.

10. In Paragraph 8, A compressor capable of contacting the first valve cover portion based on the second valve cover portion being higher than a predetermined pressure, based on the fact that the pressure inside the cylinder chamber is higher than a predetermined pressure.

11. In Paragraph 1, The above valve assembly is a compressor including a stopper for limiting the degree of deformation of the second valve.

12. In Paragraph 1, The above valve is a compressor further comprising a rotation limiting member for limiting the rotation of the second valve.

13. In Paragraph 12, The above rotation limiting part is provided in the second valve, and A compressor in which the cylinder cover further includes a cover receiving portion for accommodating the rotation limiting portion.

14. In Paragraph 12, The above rotation limiting part is a compressor provided in the above spacer.

15. In Paragraph 14, The above rotation limiting part further includes a part for limiting the rotation of the first valve, in a compressor.

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