Horizontal scroll compressor

Abstract

The invention provides a horizontal scroll compressor which comprises a shell, a rear cover and a crankshaft, a shell cavity is formed in the shell, and the rear cover is arranged at the rear end of the shell; the crankshaft is arranged in the shell cavity, the rear end of the crankshaft is arranged in the first bearing, and a first eccentric part is formed on the crankshaft; a lubricating cavity, an oil duct and an oil pumping cavity which are sequentially communicated are formed in the boss of the rear cover, and the lubricating cavity is communicated with the first bearing hole; the oil pumping cavity is communicated with the oil pool through an oil hole, a sliding rod is arranged in the oil pumping cavity, one end of the sliding rod abuts against the first eccentric part, and a piston is arranged at the other end of the sliding rod; when the crankshaft is controlled to rotate, under the action of the elastic piece and the first eccentric part, the sliding rod slides in the oil pumping cavity in a reciprocating mode, then oil in the oil pool enters the oil pumping cavity through the oil hole, or the oil in the oil pumping cavity enters the lubricating cavity through the oil channel, and circulating lubrication of the first bearing is achieved. Oil is in contact with the first bearing and exchanges heat with the first bearing to achieve a cooling effect; oil flows to the first eccentric part after passing through the first bearing and rotates along with the first eccentric part, and a refrigerant in the oil can be separated.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to a horizontal scroll compressor. Background Art

[0002] Automotive scroll compressors have the characteristics of wide speed range and complex and changeable operating conditions in application, so there are high requirements for the service life and reliability of the compressor; and the lubrication of bearings and friction pairs is crucial to the service life of the compressor. Existing scroll compressors have adopted some technical measures to provide lubrication, which are divided into oil pump oil supply and pressure difference oil supply; the advantage of oil pump oil supply is that it will not affect the volumetric efficiency of the compressor, but the disadvantage is that the oil supply is greatly affected by the speed, and the bearings are prone to lack of oil and wear at low speeds, and it is suitable for vertical scroll compressors; the advantage of pressure difference oil supply is that the oil supply is not affected by the speed, but the disadvantage is that it will cause a certain amount of internal leakage in the compressor, reducing the volumetric efficiency and cooling capacity of the compressor. Summary of the invention

[0003] In view of this, the present invention provides a horizontal scroll compressor to solve the problem that the volumetric efficiency and lubrication oil supply of the compressor cannot be taken into account in the existing scroll compressor.

[0004] The present invention provides a horizontal scroll compressor, comprising a shell, a rear cover and a crankshaft, wherein a shell cavity is formed inside the shell, and a rear opening communicating with the shell cavity is formed at the rear end of the shell; the rear cover is arranged at the rear opening, a boss is formed on the side of the rear cover facing the shell cavity, and an oil pool is formed between the rear cover, the boss and the shell; a first bearing hole is formed on the boss, and a first bearing is arranged in the first bearing hole; the crankshaft is arranged in the shell cavity, and the rear end of the crankshaft is rotatably arranged in the first bearing; the crankshaft is formed with a first eccentric portion near the first bearing;

[0005] The boss is formed with a lubrication cavity, an oil passage and a pump oil cavity which are connected in sequence, the lubrication cavity is connected with the first bearing hole; the pump oil cavity is connected with the oil pool through the oil hole, a slidable slide rod is arranged in the pump oil cavity, one end of the slide rod is in contact with the first eccentric part; a piston is arranged at the other end of the slide rod, and an elastic member is arranged between the piston and the cavity wall of the pump oil cavity;

[0006] A first one-way piece is provided in the oil hole, and the first one-way piece is configured so that the oil in the oil pool can enter the pump oil cavity through the oil hole, and the oil in the pump oil cavity cannot enter the oil pool through the oil hole; a second one-way piece is provided at the connection between the oil passage and the lubrication cavity; the second one-way piece is configured so that the oil in the oil passage can enter the lubrication cavity, and the oil in the lubrication cavity cannot enter the oil passage;

[0007] When the crankshaft is controlled to rotate, under the action of the elastic member and the first eccentric portion, the sliding rod can slide back and forth in the pump oil chamber, and then when the pressure in the pump oil chamber decreases, the oil in the oil pool can enter the pump oil chamber through the oil hole, and when the pressure in the pump oil chamber increases, the oil in the pump oil chamber can enter the lubrication chamber through the oil channel.

[0008] Further optionally, the pump oil chamber and the first eccentric portion are both arranged in front of the first bearing hole; in the axial direction of the crankshaft, the position of the pump oil chamber corresponds to the position of the first eccentric portion; the pump oil chamber extends in the radial direction of the crankshaft;

[0009] Along the rotation direction of the first eccentric part, the first eccentric part includes a proximal end and a distal end; when the first eccentric part rotates with the crankshaft, the proximal end abuts against the slide bar in a first state and the distal end abuts against the slide bar in a second state;

[0010] When the first eccentric part switches from the first state to the second state, the pump oil chamber absorbs oil from the oil pool; when the first eccentric part switches from the second state to the first state, the pump oil chamber delivers oil to the lubrication chamber.

[0011] Further optionally, the oil pool is formed between the lower end of the rear cover, the lower end of the boss and the lower end of the housing; the pump oil chamber is arranged in the front lower part of the first bearing hole, and the pump oil chamber extends in the up-down direction; a guide block is arranged in the pump oil chamber, the guide block is formed with a guide hole, and the slide rod is slidably arranged in the guide hole; the lower end of the pump oil chamber and the oil pool are connected through the oil hole;

[0012] When the first eccentric portion switches from the first state to the second state, the slide bar slides upward; when the first eccentric portion switches from the second state to the first state, the slide bar slides downward.

[0013] Further optionally, the lubrication chamber is arranged behind the first bearing hole; the oil passage comprises a first oil passage and a second oil passage, and the pump oil chamber, the first oil passage, the second oil passage and the lubrication chamber are connected in sequence;

[0014] The connection point between the first oil passage and the pump oil chamber is located at the lower end of the pump oil chamber, and the connection point between the second oil passage and the lubrication chamber is located at the lower end of the lubrication chamber.

[0015] Further optionally, the first oil passage is located behind the pump oil chamber and radially outside the first bearing hole, and the first oil passage extends along the axial direction of the first bearing hole; the second oil passage is located behind the lubrication chamber, and the second oil passage includes an oil passage section A and an oil passage section B, the oil passage section A extends along the radial direction of the first bearing hole, and the oil passage section B extends along the axial direction of the first bearing hole;

[0016] The first oil passage, oil passage section A, oil passage section B and the lubrication chamber are connected in sequence.

[0017] Further optionally, the first one-way member comprises a first valve seat, a second valve seat and a valve core, the first valve seat is arranged in the pump oil chamber, the second valve seat is arranged in the oil pool; the valve core is arranged in the oil hole, and the valve core connects the first valve seat and the second valve seat; the length of the valve core is greater than the depth of the oil hole;

[0018] The valve core and the oil hole are clearance-matched; the second valve seat is formed with at least one oil groove;

[0019] When the pressure in the pump oil chamber decreases, the oil in the oil pool enters the oil hole through the oil groove and acts on the first valve seat, so that the first valve seat can open the oil hole;

[0020] When the pressure in the pump oil chamber increases, the oil in the pump oil chamber acts on the first valve seat, and then the first valve seat can close the oil hole.

[0021] Further optionally, the first one-way member is made of soft material.

[0022] Further optionally, the second one-way member is a valve plate; one end of the valve plate is fixed to the rear wall of the lubrication cavity, and the other end cover of the valve plate is arranged at the connection between the oil passage and the lubrication cavity;

[0023] The valve plate is elastic; when the oil in the oil passage flows toward the lubrication chamber, the valve plate can open the connection between the oil passage and the lubrication chamber; when the oil in the lubrication chamber flows toward the oil passage, the valve plate can close the connection between the oil passage and the lubrication chamber.

[0024] Further optionally, a protrusion is formed at the lower end of the shell in front of the pump oil chamber, and the protrusion, the lower end of the shell, the lower end of the boss and the lower end of the rear cover surround the oil pool.

[0025] Further optionally, the pump oil chamber and the oil passage are provided in plurality, and the plurality of pump oil chambers are arranged at intervals along the circumference of the first bearing hole; the plurality of pump oil chambers and the plurality of oil passages are arranged in one-to-one correspondence, and each of the pump oil chamber lubrication chambers is connected through a corresponding oil passage;

[0026] When the crankshaft is controlled to rotate, the proximal end of the first eccentric portion sequentially abuts against the sliding rods in the plurality of pump oil chambers, and thus the plurality of pump oil chambers can deliver oil to the lubrication chamber.

[0027] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0028] The boss is formed with a lubrication chamber, an oil channel and an oil pump chamber which are connected in sequence, and the lubrication chamber is connected to the first bearing hole; the oil pump chamber and the oil pool are connected through the oil hole, and a sliding rod is arranged in the oil pump chamber, one end of the sliding rod abuts against the first eccentric part; a piston is arranged at the other end of the sliding rod, and an elastic member is arranged between the piston and the chamber wall of the oil pump chamber; when the crankshaft is controlled to rotate, the sliding rod can slide back and forth in the oil pump chamber under the action of the elastic member and the first eccentric part, and then when the pressure in the oil pump chamber decreases, the oil in the oil pool enters the oil pump chamber through the oil hole, and when the pressure in the oil pump chamber increases, the oil in the oil pump chamber enters the lubrication chamber through the oil channel Sliding cavity; compact structure, obvious lubrication effect; when the crankshaft rotates, the pump oil cavity can continuously supply oil to the lubrication cavity, so as to realize continuous and cyclic lubrication of the first bearing, improve the reliability of the first bearing, greatly reduce the failure rate of the first bearing, extend the life of the first bearing, and solve the problem of poor lubrication of the first bearing under extreme working conditions; the oil contacts the first bearing and exchanges heat, which plays a cooling role; after passing through the first bearing, the oil flows to the first eccentric part, and rotates with the first eccentric part, and can effectively separate the refrigerant in the oil under the centrifugal action; improve the suction efficiency of the compressor, and ensure the reliable operation of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0030] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0031] Figure 1 A schematic structural diagram of a horizontal scroll compressor embodiment 1 provided by the present invention;

[0032] Figure 2 A schematic structural diagram of a back cover embodiment 1 provided by the present invention;

[0033] Figure 3 A schematic diagram of the assembly structure of a crankshaft, a sliding rod and an elastic member embodiment 1 provided by the present invention;

[0034] Figure 4a A schematic structural diagram of a first one-way member embodiment 1 provided by the present invention;

[0035] Figure 4b A schematic diagram of the assembly structure of the first one-way member and the oil hole embodiment 1 provided by the present invention;

[0036] Figure 5a A structural schematic diagram of Embodiment 1 of the horizontal scroll compressor provided by the present invention when the first eccentric portion is in a first state;

[0037] Figure 5b A structural schematic diagram of Embodiment 1 of the horizontal scroll compressor provided by the present invention when the first eccentric portion is in the second state;

[0038] Figure 6 A schematic structural diagram of a horizontal scroll compressor embodiment 2 provided by the present invention;

[0039] In the figure:

[0040] 1-rear cover; 11-boss; 12-first bearing hole; 13-lubricating chamber; 141-first oil passage; 142-second oil passage; 143-oil passage section A; 144-oil passage section B; 15-pump oil chamber; 16-guide block; 17-oil hole;

[0041] 21-sliding rod; 22-piston; 23-elastic member; 24-first one-way member; 241-first valve seat; 242-second valve seat; 243-valve core; 244-oil groove; 25-second one-way member; 26-plug;

[0042] 31-housing; 311-housing cavity; 312-protrusion; 32-crankshaft; 321-first eccentric portion; 322-proximal end; 323-remote end; 324-second eccentric portion; 33-first bearing; 34-oil pool;

[0043] 41-rotor; 42-stator; 43-first seal; 44-front cover; 441-oil storage chamber; 442-air outlet; 443-third oil channel;

[0044] 51- bracket; 511- bracket cavity; 512- fifth oil passage; 52- movable scroll; 53- stationary scroll; 531- refrigerant exhaust port; 532- fourth oil passage; 54- second bearing; 55- third bearing; 56- second sealing element; 57- oil-gas separator. DETAILED DESCRIPTION

[0045] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0047] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0049] In the existing scroll compressor, the bearings are lubricated by oil pump supply and pressure differential oil supply. The advantage of oil pump supply is that it does not affect the volumetric efficiency of the compressor, but the disadvantage is that the oil supply is greatly affected by the rotation speed, and the bearings are prone to lack of oil and wear at low speeds, and it is suitable for vertical scroll compressors. The advantage of pressure differential oil supply is that the oil supply is not affected by the rotation speed, but the disadvantage is that it will cause a certain amount of internal leakage in the compressor, reducing the volumetric efficiency and cooling capacity of the compressor.

[0050] The present invention creatively provides a horizontal scroll compressor, comprising a housing, a rear cover and a crankshaft, wherein the housing is formed with a housing cavity, the rear cover is arranged at the rear end of the housing; the crankshaft is arranged in the housing cavity and the rear end of the crankshaft is arranged in a first bearing, and the crankshaft is formed with a first eccentric portion near the first bearing;

[0051] The rear cover is formed with a boss, and the boss is formed with a lubrication chamber, an oil passage and a pump oil chamber which are connected in sequence, and the lubrication chamber is connected with the first bearing hole; the pump oil chamber is connected with the oil pool through the oil hole, and a slide rod is arranged in the pump oil chamber, one end of the slide rod is in contact with the first eccentric part, and the other end is provided with a piston;

[0052] When the crankshaft is controlled to rotate, under the action of the elastic member and the first eccentric portion, the slide bar slides back and forth in the pump oil chamber, and when the pressure in the pump oil chamber decreases, the oil in the oil pool enters the pump oil chamber through the oil hole, and when the pressure in the pump oil chamber increases, the oil in the pump oil chamber enters the lubrication chamber through the oil passage;

[0053] The structure is compact, and the pump oil chamber can continuously supply oil to the lubrication chamber to achieve continuous and cyclic lubrication of the first bearing; the oil contacts and heat exchanges with the first bearing to play a cooling role; the oil flows to the first eccentric part after passing through the first bearing, and rotates with the first eccentric part, which can effectively separate the refrigerant in the oil.

[0054] It should be noted that the oil passage sections "A" and "B" in this application do not have specific meanings, but are only used to distinguish and express different oil passage sections; the front-to-back direction and the up-down direction of the horizontal scroll compressor are as follows: Figure 1 as shown in .

[0055] Example 1

[0056] like Figures 1 to 5b As shown, this embodiment provides a horizontal scroll compressor, including a shell 31, a rear cover 1, a front cover 44, a crankshaft 32 and a motor. The shell 31 is formed with a shell cavity 311 inside, the rear end of the shell 31 is formed with a rear opening connected to the shell cavity 311, and the front end of the shell 31 is formed with a front opening connected to the shell cavity 311; the rear cover 1 is provided at the rear opening, and a first sealing member 43 is provided between the rear cover 1 and the shell 31; the front cover 44 is provided at the front opening; a boss 11 is formed on the side of the rear cover 1 facing the shell cavity 311, and an oil pool 34 is formed between the rear cover 1, the boss 11 and the shell 31; the boss 11 is shaped A first bearing hole 12 is formed, and a first bearing 33 is arranged in the first bearing hole 12; the crankshaft 32 is arranged in the housing cavity 311, and the rear end of the crankshaft 32 is rotatably arranged in the first bearing 33; the crankshaft 32 is formed with a first eccentric portion 321 near the first bearing 33; the motor is arranged in the housing cavity 311, and the motor includes a rotor 41 and a stator 42, the rotor 41 is arranged outside the crankshaft 32, and the rotor 41 and the crankshaft 32 are drivingly connected; the stator 42 is arranged outside the rotor 41, and the stator 42 and the rotor 41 are magnetically connected; when the stator 42 is passed through the alternating current, the rotor 41 can drive the crankshaft 32 to rotate;

[0057] The horizontal scroll compressor also includes a bracket 51, a movable scroll plate 52 and a fixed scroll plate 53. The fixed scroll plate 53, the movable scroll plate 52 and the bracket 51 are arranged in sequence from front to back in the housing cavity 311. The bracket 51 is formed with a bracket cavity 511, a second bearing hole and a bracket shaft hole which are arranged in sequence from front to back and are connected. The front end of the crankshaft 32 passes through the bracket shaft hole, the second bearing hole and the bracket cavity 511 in sequence, and the crankshaft 32 and the second bearing hole are rotatably connected through the second bearing 54; the front end of the crankshaft 32 is formed with a second eccentric portion 324, the second eccentric portion 324 is located in the bracket cavity 511, and the second eccentric portion 324 and the movable scroll plate 52 are rotatably connected through the third bearing 55; the rear end of the movable scroll plate 52 and the bracket 51 A second sealing member 56 is provided between the front end of the movable scroll 52 and between the rear end of the stationary scroll 53 and the front end of the bracket 51; the scroll teeth of the movable scroll 52 and the scroll teeth of the stationary scroll 53 rotate in coordination, and the stationary scroll 53 is formed with a refrigerant exhaust port 531; the front cover 44 is formed with an oil storage chamber 441, and the oil storage chamber 441 is connected with the refrigerant exhaust port 531 to collect the lubricating oil discharged from the refrigerant exhaust port 531; an air outlet 442 is provided above the oil storage chamber 441, and an oil-gas separator 57 is also provided in the oil storage chamber 441, and the lubricating oil and refrigerant discharged through the refrigerant exhaust port 531 are separated by the oil-gas separator 57, and most of the refrigerant is discharged through the air outlet 442, and the lubricating oil and a small amount of refrigerant fall to the bottom of the oil storage chamber 441;

[0058] A third oil passage 443 is formed at the lower end of the front cover 44, a fourth oil passage 532 is formed at the lower end of the fixed scroll plate 53, and a fifth oil passage 512 is formed at the lower end of the bracket 51. From front to back, the oil storage chamber 441, the third oil passage 443, the fourth oil passage 532, the fifth oil passage 512 and the bracket chamber 511 are connected in sequence;

[0059] The boss 11 is formed with a lubrication chamber 13, an oil passage and an oil pump chamber 15 which are connected in sequence. The lubrication chamber 13 is connected with the first bearing hole 12; the oil pump chamber 15 is connected with the oil pool 34 through the oil hole 17; a slidable slide rod 21 is arranged in the oil pump chamber 15, and one end of the slide rod 21 is abutted against the first eccentric portion 321; a piston 22 is arranged at the other end of the slide rod 21, and an elastic member 23 is arranged between the piston 22 and the cavity wall of the oil pump chamber 15; under the action of the first eccentric portion 321 and the elastic member 23, the slide rod 21 slides up and down with the piston 22 in the oil pump chamber 15, so that the pressure in the oil pump chamber 15 changes, and then the oil pump chamber 15 can absorb and discharge oil; preferably, the elastic member 23 is a spring;

[0060] A first one-way member 24 is provided in the oil hole 17. The first one-way member 24 is configured such that: the oil in the oil pool 34 can enter the pump oil chamber 15 through the oil hole 17, and the oil in the pump oil chamber 15 cannot enter the oil pool 34 through the oil hole 17, so that the pump oil chamber 15 can smoothly perform the oil suction and oil discharge process; a second one-way member 25 is provided at the connection between the oil passage and the lubrication chamber 13; the second one-way member 25 is configured such that: the oil in the oil passage can enter the lubrication chamber 13, and the oil in the lubrication chamber 13 cannot enter the oil passage, so as to prevent the oil in the lubrication chamber 13 from being diverted into the oil passage;

[0061] When the crankshaft 32 is controlled to rotate, under the action of the elastic member 23 and the first eccentric portion 321, the slide bar 21 can slide back and forth in the pump oil chamber 15, and then when the pressure in the pump oil chamber 15 decreases, the oil in the oil pool 34 can enter the pump oil chamber 15 through the oil hole 17, and when the pressure in the pump oil chamber 15 increases, the oil in the pump oil chamber 15 can enter the lubrication chamber 13 through the oil passage;

[0062] No additional power system is required, the structure is compact and the design is ingenious; as long as the horizontal scroll compressor is in operation, the pump oil chamber 15 can continuously supply oil to the lubrication chamber 13 to circulate lubrication for the first bearing 33, thereby ensuring that the first bearing 33 is always in a lubricated state, solving the problem of poor lubrication of the first bearing 33 under extreme working conditions, improving the reliability of the first bearing 33, and greatly reducing the failure rate of the first bearing 33, thereby extending the service life of the first bearing 33; the lubricating oil is stirred when flowing through the first bearing 33, and the refrigerant in the lubricating oil can be separated; at the same time, the lubricating oil flows to the first eccentric part 321 after passing through the first bearing 33, and rotates with the first eccentric part 321, and the refrigerant in the oil can be effectively separated under the centrifugal action; thereby, the first bearing 33 can be lubricated, the lubricating oil can be cooled, and the refrigerant in the lubricating oil can be separated; at the same time, the first bearing 33 can be lubricated when the crankshaft 32 is rotated forward and reversely.

[0063] Specifically, when the sliding rod 21 slides in a direction away from the pump oil chamber 15, the pressure in the pump oil chamber 15 decreases, and the oil in the oil pool 34 can enter the pump oil chamber 15 through the oil hole 17; when the sliding rod 21 slides in a direction close to the pump oil chamber 15, the pressure in the pump oil chamber 15 increases, and the oil in the pump oil chamber 15 can enter the lubrication chamber 13 through the oil channel.

[0064] The positions of the pump oil chamber 15 and the first eccentric portion 321 affect the arrangement of the components in the housing chamber 311 on the one hand, and affect whether the oil pool 34 can be delivered to the lubrication chamber 13 in time on the other hand. The positions of the pump oil chamber 15 and the first eccentric portion 321 are further described below; the pump oil chamber 15 and the first eccentric portion 321 are both arranged in front of the first bearing hole 12; in the axial direction of the crankshaft 32, the position of the pump oil chamber 15 corresponds to the position of the first eccentric portion 321; the pump oil chamber 15 extends in the radial direction of the crankshaft 32, so that as the first eccentric portion 321 rotates, the slide bar 21 can slide smoothly in the pump oil chamber 15;

[0065] Along the rotation direction of the first eccentric portion 321, the first eccentric portion 321 includes a proximal end 322 and a distal end 323; when the first eccentric portion 321 rotates with the crankshaft 32, the proximal end 322 abuts against the slide bar 21 in a first state and the distal end 323 abuts against the slide bar 21 in a second state; when the proximal end 322 abuts against the slide bar 21, the slide bar 21 is away from the pump oil chamber 15; when the distal end 323 abuts against the slide bar 21, the slide bar 21 is close to the pump oil chamber 15;

[0066] When the first eccentric portion 321 switches from the first state to the second state, the proximal end 322 abuts against the slide rod 21 and switches to the remote end 323 abuts against the slide rod 21, and the pump oil chamber 15 sucks oil from the oil pool 34; when the first eccentric portion 321 switches from the second state to the first state, the remote end 323 abuts against the slide rod 21 and switches to the proximal end 322 abuts against the slide rod 21, and the pump oil chamber 15 delivers oil to the lubrication chamber 13.

[0067] Preferably, an oil pool 34 is formed between the lower end of the rear cover 1, the lower end of the boss 11 and the lower end of the housing 31; the pump oil chamber 15 is arranged in the front and lower part of the first bearing hole 12, and the pump oil chamber 15 extends in the up-down direction. When the first eccentric part 321 rotates, the slide bar 21 can slide in the up-down direction under the action of the first eccentric part 321 and the elastic member 23; a guide block 16 is arranged in the pump oil chamber 15, and a guide hole is formed in the guide block 16, and a slide bar 21 is slidably arranged in the guide hole; one end of the slide bar 21 is arranged in the pump oil chamber 15 In the cavity 15, the other end of the slide rod 21 passes through the guide hole and abuts against the first eccentric part 321, and the guide hole guides the slide rod 21; the lower end of the pump oil cavity 15 is connected with the oil pool 34 through the oil hole 17; specifically, the oil hole 17 is located at the bottom of the pump oil cavity 15, ensuring that when the oil content in the oil pool 34 is small, a part of the oil can still enter the pump oil cavity 15, and then the part of the oil can enter the lubrication cavity 13 to lubricate the first bearing 33, extend the service life of the first bearing 33 and ensure the reliable operation of the first bearing 33;

[0068] When the first eccentric portion 321 switches from the first state to the second state, the slide bar 21 slides upward, and the pump oil chamber 15 sucks the oil in the oil pool 34 into the pump oil chamber 15; when the first eccentric portion 321 switches from the second state to the first state, the slide bar 21 slides downward, and the pump oil chamber 15 can transport the oil in the pump oil chamber 15 to the lubrication chamber 13 through the oil channel; in this way, when the first eccentric portion 321 rotates one circle with the crankshaft 32, the pump oil chamber 15 completes a cycle of first sucking oil and then discharging oil.

[0069] The structure and position of the oil passage have an impact on whether the oil can smoothly enter the lubrication chamber 13 through the pump oil chamber 15. The structure and position of the oil passage are further described below. The lubrication chamber 13 is arranged behind the first bearing hole 12 to increase the contact area between the lubricating oil in the lubrication chamber 13 and the first bearing 33, thereby ensuring the lubrication effect of the first bearing 33; preferably, the lubrication chamber 13 is a cylindrical structure, and the lubrication chamber 13 and the first bearing hole 12 are coaxially arranged; the inner diameter of the lubrication chamber 13 is larger than the outer diameter of the outer ring of the first bearing 33 and smaller than the inner diameter of the outer ring of the first bearing 33; the oil in the lubrication chamber 13 can flow through the gap between the inner ring and the outer ring of the first bearing 33, so that the lubricating oil can fully lubricate the inner ring, outer ring, retainer and rolling element of the first bearing 33, and the lubrication is sufficient and comprehensive;

[0070] The oil passage includes a first oil passage 141 and a second oil passage 142. The pump oil chamber 15, the first oil passage 141, the second oil passage 142 and the lubricating chamber 13 are sequentially connected. The lubricating oil in the pump oil chamber 15 enters the lubricating chamber 13 through the first oil passage 141 and the second oil passage 142 under pressure.

[0071] The connecting point between the first oil passage 141 and the pump oil chamber 15 is located at the lower end of the pump oil chamber 15, so that as much oil as possible can enter the lubrication chamber 13 through the first oil passage 141 and the second oil passage 142; the connecting point between the second oil passage 142 and the lubrication chamber 13 is located at the lower end of the lubrication chamber 13, so that as much oil as possible in the lubrication chamber 13 can flow through the gap between the inner ring and the outer ring of the first bearing 33, thereby achieving more comprehensive and thorough lubrication of the first bearing 33.

[0072] Further, the first oil passage 141 is located behind the pump oil chamber 15 and radially outside the first bearing hole 12, and the first oil passage 141 extends along the axial direction of the first bearing hole 12; the second oil passage 142 is located behind the lubrication chamber 13, and the second oil passage 142 includes an oil passage section A143 and an oil passage section B144, the oil passage section A143 extends along the radial direction of the first bearing hole 12, and the oil passage section B144 extends along the axial direction of the first bearing hole 12;

[0073] The first oil passage 141, the oil passage section A143, the oil passage section B144 and the lubricating chamber 13 are sequentially connected, so that the lubricating oil can smoothly flow through the first oil passage 141, the oil passage section A143, the oil passage section B144 and the lubricating chamber 13, ensuring the flow rate of the lubricating oil and avoiding the problem of unstable and discontinuous delivery of the lubricating oil, which leads to poor lubricating effect; on the other hand, the flow path of the lubricating oil is shortened, avoiding the problem of insufficient lubricating oil in the lubricating chamber 13 leading to poor lubricating effect; in addition, the temperature of the lubricating oil can be reduced when it flows through the first oil passage 141, the oil passage section A143 and the oil passage section B144, thereby improving the fluidity and lubricating effect of the lubricating oil;

[0074] Preferably, the first oil passage 141 and the oil passage section B144 both extend in the horizontal direction, and the oil passage section A143 extends in the up-down direction; a first oil unloading hole 17 is formed on the side wall of the pump oil chamber 15, and the first oil unloading hole 17 connects the pump oil chamber 15 and the oil pool 34; the lower end of the oil passage section A143 and the oil pool 34 are connected via the second oil unloading hole 17; when oil unloading is not required, plugging heads 26 are provided in the first oil unloading hole 17 and the second oil unloading hole 17; when oil unloading is required, the plugging head 26 can be removed; the oil passage can be cleaned and the pressure can be relieved in time to avoid impurities in the oil passage affecting the oil delivery, and to avoid high pressure in the oil passage affecting the operation of the first bearing.

[0075] The structure of the first one-way member 24 affects whether the oil hole 17 can be opened and closed in time, and also affects the oil flow rate of the oil hole 17. The structure of the first one-way member is further described below. The first one-way member 24 includes a first valve seat 241, a second valve seat 242 and a valve core 243. The first valve seat 241 is arranged in the pump oil chamber 15, and the second valve seat 242 is arranged in the oil pool 34. The valve core 243 is arranged in the oil hole 17, and the valve core 243 connects the first valve seat 241 and the second valve seat 242. The length of the valve core 243 is greater than the depth of the oil hole 17.

[0076] The valve core 243 and the oil hole 17 are clearance-matched; the valve core 243 and the second valve seat 242 are each formed with at least one oil groove 244, and the oil groove 244 of the valve core 243 is communicated with the oil groove 244 of the second valve seat 242;

[0077] When the pressure in the pump oil chamber 15 decreases, the oil in the oil pool 34 enters the oil hole 17 through the oil groove 244 and acts on the first valve seat 241, so that the first valve seat 241 can open the oil hole 17;

[0078] When the pressure in the pump oil chamber 15 increases, the oil in the pump oil chamber 15 acts on the first valve seat 241 , and then the first valve seat 241 can close the oil hole 17 .

[0079] Preferably, the first one-way member 24 is made of soft material; on the one hand, it ensures that the first valve seat 241 can tightly close the oil hole 17, and on the other hand, it reduces the friction between the valve core 243 and the hole wall of the oil hole 17, reduces wear, and reduces the noise when the first one-way member 24 moves.

[0080] Specifically, the first valve seat 241 is cylindrical, and the valve core 243 and the second valve seat 242 are both plum blossom-shaped.

[0081] The structure of the second one-way member 25 affects whether the connection between the oil passage and the lubrication chamber 13 can be opened and closed in time, and also affects the oil flow rate of the oil hole 17. The structure of the second one-way member 25 is further described below. The second one-way member 25 is a valve plate. One end of the valve plate is fixed to the rear wall of the lubrication chamber 13, and the other end of the valve plate is covered at the connection between the oil passage and the lubrication chamber 13.

[0082] The valve plate is elastic; when the oil in the oil channel flows to the lubrication chamber 13, the valve plate can open the connection between the oil channel and the lubrication chamber 13; when the oil in the lubrication chamber 13 flows to the oil channel, the valve plate can close the connection between the oil channel and the lubrication chamber 13.

[0083] The refrigerant enters the low-pressure side of the shell cavity 311. The bottom of the low-pressure side of the shell cavity 311 is the oil pool 34. The refrigerant mixed with lubricating oil then enters the gap between the vortex teeth of the movable scroll 52 and the vortex teeth of the fixed scroll 53 from the refrigerant inlet. The high-temperature refrigerant and lubricating oil formed after compression are discharged from the refrigerant exhaust port 531 into the oil storage cavity 441. The oil-gas separator 57 separates the refrigerant and the lubricating oil, so that the lubricating oil mixed with a small amount of refrigerant falls to the bottom of the oil storage cavity 57 and passes through the third oil passage 443, The fourth oil passage 532 and the fifth oil passage 512 enter the bracket cavity 511 to lubricate the second bearing 54 and the third bearing 55; at the same time, as the crankshaft 32 rotates, under the action of the elastic member 23 and the first eccentric portion 321, the slide rod 21 can slide back and forth in the pump oil cavity 15. When the pressure in the pump oil cavity 15 decreases, the oil in the oil pool 34 can enter the pump oil cavity 15 through the oil hole 17. When the pressure in the pump oil cavity 15 increases, the oil in the pump oil cavity 15 can enter the lubrication cavity 13 through the oil passage to lubricate the first bearing.

[0084] In summary, the boss 11 is formed with a lubrication chamber 13, an oil passage and an oil pump chamber 15 which are connected in sequence, the lubrication chamber 13 is connected with the first bearing hole 12; the oil pump chamber 15 is connected with the oil pool 34 through the oil hole 17, a slide bar 21 is arranged in the oil pump chamber 15, one end of the slide bar 21 is abutted against the first eccentric portion 321; a piston 22 is arranged at the other end of the slide bar 21, an elastic member 23 is arranged between the piston 22 and the chamber wall of the oil pump chamber 15; when the crankshaft 32 is controlled to rotate, under the action of the elastic member 23 and the first eccentric portion 321, the slide bar 21 can slide back and forth in the oil pump chamber 15, and then when the pressure in the oil pump chamber 15 is reduced, the oil in the oil pool 34 enters the oil pump chamber 15 through the oil hole 17, and the pressure in the oil pump chamber 15 When the crankshaft 32 is enlarged, the oil in the pump oil chamber 15 enters the lubrication chamber 13 through the oil channel; the structure is compact and the lubrication effect is obvious; when the crankshaft 32 rotates, the pump oil chamber 15 can continuously supply oil to the lubrication chamber 13, so as to realize continuous and circulating lubrication of the first bearing 33, improve the reliability of the first bearing 33, greatly reduce the failure rate of the first bearing 33, extend the life of the first bearing 33, and solve the problem of poor lubrication of the first bearing 33 under extreme working conditions; the oil contacts the first bearing 33 and exchanges heat, which plays a cooling role; after passing through the first bearing 33, the oil flows to the first eccentric part 321, and rotates with the first eccentric part 321, and can effectively separate the refrigerant in the oil under the centrifugal action; improve the suction efficiency of the compressor, and ensure the reliable operation of the compressor.

[0085] Example 2

[0086] The oil level in the oil pool 34 affects the amount of oil in the oil pool 34 that enters the pump oil chamber 15. When the oil level in the oil pool 34 is low, the amount of oil in the oil pool 34 that enters the pump oil chamber 15 is small; when the oil level in the oil pool 34 is high, the amount of oil in the oil pool 34 that enters the pump oil chamber 15 is large. Therefore, the present embodiment proposes that a protrusion 312 is formed at the lower end of the housing 31 in front of the pump oil chamber 15, and the protrusion 312, the lower end of the housing 31, the lower end of the boss 11 and the lower end of the rear cover 1 surround the oil pool 34.

[0087] When there is less oil in the oil pool 34, more oil can enter the pump oil chamber 15, which can effectively improve the circulation of oil at the first bearing 33; when there is more oil in the oil pool 34, the oil can flow to other areas to lubricate other parts.

[0088] Example 3

[0089] On the basis of Embodiment 1 and / or 2, this embodiment proposes that a plurality of pump oil chambers 15 and oil passages are provided, and the plurality of pump oil chambers 15 are arranged at intervals along the circumference of the first bearing hole 12; the plurality of pump oil chambers 15 and the plurality of oil passages are arranged in one-to-one correspondence, and each pump oil chamber 15 is connected to the lubrication chamber 13 through the corresponding oil passage;

[0090] When the crankshaft 32 is controlled to rotate, the proximal end 322 of the first eccentric portion 321 sequentially abuts against the slide bars 21 in the plurality of pump oil chambers 15 , and thus the plurality of pump oil chambers 15 can deliver oil to the lubrication chamber 13 .

[0091] Example 4

[0092] On the basis of Embodiment 1 and / or 2, this embodiment proposes that a plurality of pump oil chambers 15 and oil passages are provided, and the plurality of pump oil chambers 15 are arranged at intervals along the axial direction of the first bearing hole 12; the plurality of pump oil chambers 15 and the plurality of oil passages are arranged in a one-to-one correspondence, and each pump oil chamber 15 is connected to the lubrication chamber 13 through the corresponding oil passage; a plurality of first eccentric parts 321 are provided, and the plurality of first eccentric parts 321 are arranged at intervals along the axial direction of the crankshaft 32; the plurality of first eccentric parts 321 and the sliding rods 21 in the plurality of pump oil chambers 15 are arranged in a one-to-one correspondence;

[0093] When the crankshaft 32 is controlled to rotate, the proximal end 322 of each first eccentric portion 321 abuts against the corresponding sliding rod 21 , and thus the plurality of pump oil chambers 15 can deliver oil to the lubrication chamber 13 .

[0094] Example 5

[0095] On the basis of Embodiment 1 and / or 2, this embodiment proposes that a plurality of second oil passages 142 are provided, and the connecting points between the plurality of second oil passages 142 and the lubrication chamber 13 are arranged at intervals on the rear wall of the lubrication chamber 13, and a nozzle is provided at the connecting point between each second oil passage 142 and the lubrication chamber 13; the oil in the pump oil chamber 15 enters the plurality of second oil passages 142 through the first oil passage 141, then enters the lubrication chamber 13 through different nozzles, and then flows to different parts of the first bearing 33, thereby achieving more comprehensive and thorough lubrication of the first bearing 33.

[0096] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A horizontal scroll compressor, characterized in that: The crankshaft (32) comprises a housing (31), a rear cover (1) and a crankshaft (32); a housing cavity (311) is formed inside the housing (31); and a rear opening communicating with the housing cavity (311) is formed at the rear end of the housing (31); The rear cover (1) is arranged at the rear opening; a boss (11) is formed on the side of the rear cover (1) facing the housing cavity (311); an oil pool (34) is formed between the rear cover (1), the boss (11) and the housing (31); a first bearing hole (12) is formed on the boss (11); a first bearing (33) is arranged in the first bearing hole (12); the crankshaft (32) is arranged in the housing cavity (311), and the rear end of the crankshaft (32) is rotatably arranged in the first bearing (33); a first eccentric portion (321) is formed on the crankshaft (32) near the first bearing (33); The boss (11) is formed with a lubrication chamber (13), an oil passage and a pump oil chamber (15) which are connected in sequence. The lubrication chamber (13) is connected with the first bearing hole (12). The pump oil chamber (15) is connected with the oil pool (34) through an oil hole (17). A slidable slide rod (21) is arranged in the pump oil chamber (15). One end of the slide rod (21) is in contact with the first eccentric portion (321). A piston (22) is arranged at the other end of the slide rod (21). An elastic member (23) is arranged between the piston (22) and the chamber wall of the pump oil chamber (15). A first one-way piece (24) is arranged in the oil hole (17), and the first one-way piece (24) is configured such that the oil in the oil pool (34) can enter the pump oil chamber (15) through the oil hole (17), and the oil in the pump oil chamber (15) cannot enter the oil pool (34) through the oil hole (17); a second one-way piece (25) is arranged at the connection point between the oil passage and the lubrication chamber (13); the second one-way piece (25) is configured such that the oil in the oil passage can enter the lubrication chamber (13), and the oil in the lubrication chamber (13) cannot enter the oil passage; When the crankshaft (32) is controlled to rotate, under the action of the elastic member (23) and the first eccentric portion (321), the slide rod (21) can slide back and forth in the pump oil chamber (15), so that when the pressure in the pump oil chamber (15) decreases, the oil in the oil pool (34) can enter the pump oil chamber (15) through the oil hole (17), and when the pressure in the pump oil chamber (15) increases, the oil in the pump oil chamber (15) can enter the lubrication chamber (13) through the oil passage.

2. The horizontal scroll compressor according to claim 1, characterized in that: The pump oil chamber (15) and the first eccentric portion (321) are both arranged in front of the first bearing hole (12); in the axial direction of the crankshaft (32), the position of the pump oil chamber (15) corresponds to the position of the first eccentric portion (321); the pump oil chamber (15) extends in the radial direction of the crankshaft (32); Along the rotation direction of the first eccentric portion (321), the first eccentric portion (321) includes a proximal end (322) and a distal end (323); when the first eccentric portion (321) rotates with the crankshaft (32), the proximal end (322) and the slide bar (21) are in a first state, and the distal end (323) and the slide bar (21) are in a second state; When the first eccentric portion (321) switches from the first state to the second state, the pump oil chamber (15) draws oil from the oil pool (34); when the first eccentric portion (321) switches from the second state to the first state, the pump oil chamber (15) delivers oil to the lubrication chamber (13).

3. The horizontal scroll compressor according to claim 2, characterized in that: The oil pool (34) is formed between the lower end of the rear cover (1), the lower end of the boss (11) and the lower end of the housing (31); the pump oil chamber (15) is arranged at the front lower part of the first bearing hole (12), and the pump oil chamber (15) extends in the up-down direction; a guide block (16) is arranged in the pump oil chamber (15), and a guide hole is formed in the guide block (16), and the slide rod (21) is slidably arranged in the guide hole; the lower end of the pump oil chamber (15) and the oil pool (34) are connected through the oil hole (17); When the first eccentric portion (321) switches from the first state to the second state, the slide bar (21) slides upward; when the first eccentric portion (321) switches from the second state to the first state, the slide bar (21) slides downward.

4. The horizontal scroll compressor according to claim 2 or 3, characterized in that: The lubrication chamber (13) is arranged behind the first bearing hole (12); the oil passage comprises a first oil passage (141) and a second oil passage (142); the pump oil chamber (15), the first oil passage (141), the second oil passage (142) and the lubrication chamber (13) are connected in sequence; The connection point between the first oil passage (141) and the pump oil chamber (15) is located at the lower end of the pump oil chamber (15), and the connection point between the second oil passage (142) and the lubrication chamber (13) is located at the lower end of the lubrication chamber (13).

5. The horizontal scroll compressor according to claim 4, characterized in that: The first oil passage (141) is located behind the pump oil chamber (15) and radially outside the first bearing hole (12), and the first oil passage (141) extends in the axial direction of the first bearing hole (12); the second oil passage (142) is located behind the lubrication chamber (13), and the second oil passage (142) includes an oil passage section A (143) and an oil passage section B (144), the oil passage section A (143) extends in the radial direction of the first bearing hole (12), and the oil passage section B (144) extends in the axial direction of the first bearing hole (12); The first oil passage (141), the oil passage section A (143), the oil passage section B (144) and the lubrication chamber (13) are sequentially connected.

6. The horizontal scroll compressor according to claim 1, characterized in that: The first one-way member (24) comprises a first valve seat (241), a second valve seat (242) and a valve core (243); the first valve seat (241) is arranged in the pump oil chamber (15), and the second valve seat (242) is arranged in the oil pool (34); the valve core (243) is arranged in the oil hole (17), and the valve core (243) connects the first valve seat (241) and the second valve seat (242); the length of the valve core (243) is greater than the depth of the oil hole (17); The valve core (243) and the oil hole (17) are clearance-matched; the second valve seat (242) is formed with at least one oil groove (244); When the pressure in the pump oil chamber (15) decreases, the oil in the oil pool (34) enters the oil hole (17) through the oil groove (244) and acts on the first valve seat (241), so that the first valve seat (241) can open the oil hole (17); When the pressure in the pump oil chamber (15) increases, the oil in the pump oil chamber (15) acts on the first valve seat (241), and then the first valve seat (241) can close the oil hole (17).

7. The horizontal scroll compressor according to claim 6, characterized in that: The first one-way member (24) is made of soft material.

8. The horizontal scroll compressor according to claim 1, characterized in that: The second one-way member (25) is a valve plate; one end of the valve plate is fixed to the rear wall of the lubrication cavity (13), and the other end cover of the valve plate is arranged at the connection point between the oil passage and the lubrication cavity (13); The valve plate is elastic; when the oil in the oil passage flows toward the lubricating chamber (13), the valve plate can open the connection between the oil passage and the lubricating chamber (13); when the oil in the lubricating chamber (13) flows toward the oil passage, the valve plate can close the connection between the oil passage and the lubricating chamber (13).

9. The horizontal scroll compressor according to claim 2, characterized in that: The lower end of the housing (31) is formed with a protrusion (312) in front of the pump oil chamber (15), and the protrusion (312), the lower end of the housing (31), the lower end of the boss (11) and the lower end of the rear cover (1) surround the oil pool (34).

10. The horizontal scroll compressor according to claim 2, characterized in that: The pump oil chamber (15) and the oil passage are provided in plurality, and the plurality of pump oil chambers (15) are arranged at intervals along the circumference of the first bearing hole (12); the plurality of pump oil chambers (15) and the plurality of oil passages are arranged in one-to-one correspondence, and each of the pump oil chambers (15) and the lubrication chamber (13) is connected through the corresponding oil passage; When the crankshaft (32) is controlled to rotate, the proximal end (322) of the first eccentric portion (321) sequentially abuts against the slide bars (21) in the plurality of pump oil chambers (15), so that the plurality of pump oil chambers (15) can deliver oil to the lubrication chamber (13).

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