A horizontal scroll compressor

Abstract

The application provides a horizontal scroll compressor, which comprises a shell, a rear cover and a crankshaft, the shell is formed with a shell cavity, the rear cover is arranged at the rear end of the shell, the crankshaft is arranged in the shell cavity and the rear end of the crankshaft is arranged in a first bearing, the crankshaft is formed with a first eccentric part, the boss of the rear cover is formed with a lubricating cavity, an oil channel and a pump oil cavity which are sequentially communicated, the lubricating cavity is communicated with the first bearing hole, the pump oil cavity is communicated with an oil pool through an oil hole, a sliding rod is arranged in the pump oil cavity, one end of the sliding rod is in abutment with the first eccentric part, and the other end of the sliding rod is provided with a piston, when the crankshaft is controlled to rotate, the sliding rod reciprocates in the pump oil cavity under the action of an elastic element and the first eccentric part, then the oil in the oil pool enters the pump oil cavity through the oil hole, or the oil in the pump oil cavity enters the lubricating cavity through the oil channel, the circulation lubrication of the first bearing is realized, the oil contacts the first bearing and exchanges heat, and the cooling effect is achieved, and after the oil passes through the first bearing, the oil flows to the first eccentric part and rotates with the first eccentric part, so that the refrigerant in the oil can be separated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of compressors, and particularly relates to a horizontal scroll compressor. BACKGROUND

[0002] A scroll compressor for vehicle has the characteristics of wide rotating speed range and complex and changeable operating conditions in application, and therefore has high requirements for service life and reliability of the compressor; lubrication of bearings and friction pairs is crucial to the service life of the compressor. Some technical measures for providing lubrication are adopted in the existing scroll compressor, which are divided into oil pump oil supply and pressure difference oil supply. The oil pump oil supply has the advantages of not affecting the volumetric efficiency of the compressor and the disadvantage of being greatly affected by rotating speed in oil supply amount, and bearings are prone to wear due to lack of oil at low rotating speed, and the oil pump oil supply is suitable for vertical scroll compressors. The pressure difference oil supply has the advantage of not being affected by rotating speed in oil supply amount and the disadvantage of causing certain internal leakage of the compressor, reducing the volumetric efficiency and refrigerating capacity of the compressor. SUMMARY

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

[0004] The present application provides a horizontal scroll compressor, which comprises a shell, a rear cover and a crankshaft, an inner part of the shell is formed with a shell cavity, a rear end of the shell is formed with a rear opening communicating with the shell cavity; the rear cover is arranged at the rear opening, one side of the rear cover facing the shell cavity is formed with a boss, an oil pool is formed between the rear cover, the boss and the shell; the boss is formed with a first bearing hole, and a first bearing is arranged in the first bearing hole; the crankshaft is arranged in the shell cavity, and a rear end of the crankshaft is rotatably arranged in the first bearing hole; the crankshaft is formed with a first eccentric part near the first bearing hole;

[0005] The boss is formed with a lubricating cavity, an oil channel and a pump oil cavity which are sequentially communicated, the lubricating cavity and the first bearing hole are communicated; the pump oil cavity and the oil pool are communicated through an oil hole, a slidable slide rod is arranged in the pump oil cavity, one end of the slide rod abuts against the first eccentric part; the other end of the slide rod is provided with a piston, and an elastic member is arranged between the piston and a cavity wall of the pump oil cavity;

[0006] A first one-way member is arranged in the oil hole, and the first one-way member is configured such that oil in the oil pool can enter the pump oil cavity through the oil hole, and oil in the pump oil cavity cannot enter the oil pool through the oil hole; a second one-way member is arranged at a communication position of the oil channel and the lubricating cavity; the second one-way member is configured such that oil in the oil channel can enter the lubricating cavity, and oil in the lubricating cavity cannot enter the oil channel;

[0007] When the crankshaft is controlled to rotate, the slide rod can slide reciprocally in the pump oil cavity under the action of the elastic member and the first eccentric part, and when the pressure in the pump oil cavity decreases, the oil in the oil pool can enter the pump oil cavity through the oil hole, and when the pressure in the pump oil cavity increases, the oil in the pump oil cavity can enter the lubricating cavity through the oil channel.

[0008] Further, the pump oil cavity and the first eccentric part are arranged in front of the first bearing hole; in the axial direction of the crankshaft, the position of the pump oil cavity corresponds to the position of the first eccentric part; the pump oil cavity extends in the radial direction of the crankshaft.

[0009] In the rotation direction of the first eccentric part, the first eccentric part comprises a near end and a far end; when the first eccentric part rotates with the crankshaft, the first eccentric part has a first state in which the near end abuts against the slide rod and a second state in which the far end abuts against the slide rod.

[0010] When the first eccentric part switches from the first state to the second state, the pump oil cavity sucks oil from the oil pool; when the first eccentric part switches from the second state to the first state, the pump oil cavity delivers oil into the lubricating cavity.

[0011] Further, the lower end of the rear cover, the lower end of the boss and the lower end of the housing form the oil pool; the pump oil cavity is arranged below and in front of the first bearing hole, and extends in the up-down direction; the pump oil cavity is provided with a guide block, the guide block forms a guide hole, and the slide rod is slidably arranged in the guide hole; the lower end of the pump oil cavity and the oil pool are communicated through the oil hole.

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

[0013] Further, the lubricating cavity is arranged behind the first bearing hole; the oil channel comprises a first oil channel and a second oil channel, and the pump oil cavity, the first oil channel, the second oil channel and the lubricating cavity are sequentially communicated.

[0014] The communication position of the first oil channel and the pump oil cavity is located at the lower end of the pump oil cavity, and the communication position of the second oil channel and the lubricating cavity is located at the lower end of the lubricating cavity.

[0015] Further optionally, the first oil passage is located at the rear of the pump oil cavity and radially outside the first bearing hole, and extends axially along the first bearing hole; the second oil passage is located at the rear of the lubricating cavity, and comprises an oil passage section A extending radially along the first bearing hole and an oil passage section B extending axially along the first bearing hole.

[0016] The first oil passage, the oil passage section A, the oil passage section B and the lubricating cavity are sequentially communicated.

[0017] Further optionally, the first one-way piece comprises a first valve seat, a second valve seat and a valve core, the first valve seat is arranged in the pump oil cavity, 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 in clearance fit; the second valve seat is formed with at least one oil groove;

[0019] When the pressure in the pump oil cavity 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 cavity increases, the oil in the pump oil cavity acts on the first valve seat, so that the first valve seat can close the oil hole.

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

[0022] Further optionally, the second one-way piece is a valve sheet; one end of the valve sheet is fixed to the rear wall of the lubricating cavity, and the other end of the valve sheet is arranged at the communication position of the oil passage and the lubricating cavity;

[0023] The valve sheet is elastic; when the oil in the oil passage flows to the lubricating cavity, the valve sheet can open the communication position of the oil passage and the lubricating cavity; when the oil in the lubricating cavity flows to the oil passage, the valve sheet can close the communication position of the oil passage and the lubricating cavity.

[0024] Further optionally, the lower end of the shell is formed with a protrusion in front of the pump oil cavity, 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, a plurality of pump oil cavities and oil passages are arranged, the plurality of pump oil cavities are arranged in a circumferential direction of the first bearing hole; the plurality of pump oil cavities and the plurality of oil passages are arranged one by one in a one-to-one correspondence, and each pump oil cavity and lubricating cavity are communicated through a corresponding oil passage.

[0026] When the crankshaft is controlled to rotate, the proximal end of the first eccentric portion abuts against the slide rod in the plurality of pump oil cavities in turn, and the plurality of pump oil cavities can all supply oil into the lubricating cavity.

[0027] Compared with the prior art, the beneficial effects of the present application mainly lie in that:

[0028] The boss is formed with a lubricating cavity, an oil passage and a pump oil cavity which are communicated in sequence, and the lubricating cavity is communicated with the first bearing hole; the pump oil cavity is communicated with the oil pool through an oil hole, and the pump oil cavity is provided with a slide rod, one end of the slide rod abutting against the first eccentric portion; the other end of the slide rod is provided with a piston, and an elastic member is arranged between the piston and the cavity wall of the pump oil cavity; when the crankshaft is controlled to rotate, under the action of the elastic member and the first eccentric portion, the slide rod can reciprocate in the pump oil cavity, and when the pressure in the pump oil cavity decreases, the oil in the oil pool enters the pump oil cavity through the oil hole, and when the pressure in the pump oil cavity increases, the oil in the pump oil cavity enters the lubricating cavity through the oil passage; the structure is compact, and the lubricating effect is obvious; when the crankshaft rotates, the pump oil cavity can continuously supply oil to the lubricating cavity, realizing continuous and circulating lubrication of the first bearing, improving the reliability of the first bearing, greatly reducing the failure rate of the first bearing, prolonging the service life of the first bearing, solving the problem of poor lubrication of the first bearing under extreme working conditions; the oil contacts and exchanges heat with the first bearing, playing a cooling role; the oil flows to the first eccentric portion after passing through the first bearing, and rotates with the first eccentric portion, and under the centrifugal action, the refrigerant in the oil can be effectively separated; the suction efficiency of the compressor is improved, and the reliable operation of the compressor is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0030] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0031] Figure 1 Structure schematic diagram of horizontal scroll compressor embodiment 1 provided by the present application;

[0032] Figure 2 Structure schematic diagram of rear cover embodiment 1 provided by the present application;

[0033] Figure 3 Assembled structure schematic view of the crankshaft, slide rod and elastic member embodiment 1 provided by the present application;

[0034] Figure 4a Structure schematic view of the first one-way member embodiment 1 provided by the present application;

[0035] Figure 4b Assembled structure schematic view of the first one-way member and oil hole embodiment 1 provided by the present application;

[0036] Figure 5a Structure schematic view of the horizontal scroll compressor embodiment 1 when the first eccentric part is in the first state provided by the present application;

[0037] Figure 5b Structure schematic view of the horizontal scroll compressor embodiment 1 when the first eccentric part is in the second state provided by the present application;

[0038] Figure 6 Structure schematic view of the horizontal scroll compressor embodiment 2 provided by the present application;

[0039] In the figure:

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

[0041] 21 - slide 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 head;

[0042] 31 - housing; 311 - housing cavity; 32 - crankshaft; 321 - first eccentric part; 324 - second eccentric part; 33 - first bearing; 34 - oil pool;

[0043] 41 - rotor; 42 - stator; 43 - first sealing member; 44 - front cover; 441 - oil storage cavity; 442 - gas outlet; 443 - third oil channel;

[0044] 51 - support; 511 - support cavity; 512 - fifth oil channel; 52 - orbiting scroll; 53 - fixed scroll; 531 - refrigerant exhaust port; 532 - fourth oil channel; 54 - second bearing; 55 - third bearing; 56 - second sealing member; 57 - oil-gas separator. DETAILED DESCRIPTION

[0045] The present application will become fully understood from the detailed description given herein below and the accompanying drawings which are given by way of illustration and are not intended to limit the present application.

[0046] The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the application and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0047] It should be understood that the term "and / or" as used herein is intended to encompass all possible combinations of one or more of the associated listed items, for example, A and / or B can mean: A alone, A and B together, or B alone.

[0048] It should be understood that the term "and / or" as used herein is intended to encompass all possible combinations of one or more of the associated listed items, for example, A and / or B can mean: A alone, A and B together, or B alone.

[0049] In the existing scroll compressor, the bearing is lubricated by oil pump oil supply and pressure difference oil supply. The advantage of oil pump oil supply is that it does not affect the volumetric efficiency of the compressor, and the disadvantage is that the oil supply is greatly affected by the speed, the bearing is easy to lack oil and wear at low speed, and it is suitable for vertical scroll compressor. The advantage of pressure difference oil supply is that the oil supply is not affected by the speed, and the disadvantage is that it will increase the internal leakage of the compressor, reduce the volumetric efficiency and refrigerating capacity of the compressor.

[0050] The present application provides a horizontal scroll compressor, comprising a shell, a rear cover and a crankshaft, the shell forms a shell cavity, the rear cover is arranged at the rear end of the shell, the crankshaft is arranged in the shell cavity, and the rear end of the crankshaft is arranged in the first bearing, and the crankshaft forms a first eccentric part near the first bearing.

[0051] The rear cover is formed with a boss, the boss is formed with a lubricating cavity, an oil channel and a pump oil cavity which are communicated in sequence, the lubricating cavity is communicated with the first bearing hole, the pump oil cavity is communicated with the oil pool through an oil hole, a sliding rod is arranged in the pump oil cavity, one end of the sliding rod is in abutment with the first eccentric part, and the other end of the sliding rod is provided with a piston;

[0052] When the crankshaft is controlled to rotate, the sliding rod reciprocates in the pump oil cavity under the action of the elastic member and the first eccentric part, and then when the pressure in the pump oil cavity decreases, the oil in the oil pool enters the pump oil cavity through the oil hole, and when the pressure in the pump oil cavity increases, the oil in the pump oil cavity enters the lubricating cavity through the oil channel;

[0053] The structure is compact, the pump oil cavity can continuously supply oil to the lubricating cavity, the continuous and cyclic lubrication of the first bearing is realized, the oil contacts and exchanges heat with the first bearing, and the oil after flowing through the first bearing flows to the first eccentric part and rotates with the first eccentric part, so that the refrigerant in the oil can be effectively separated.

[0054] It should be noted that the oil channel sections "A" and "B" are defined in the present application and do not have a specific meaning, but are only for the purpose of distinguishing and expressing different oil channel sections; the front-rear direction and the up-down direction of the horizontal scroll compressor are as shown in Figure 1 .

[0055] Embodiment 1

[0056] As shown in Figures 1 to 5b , the present embodiment provides a horizontal scroll compressor, which comprises a shell 31, a rear cover 1, a front cover 44, a crankshaft 32 and a motor, the inside of the shell 31 is formed with a shell cavity 311, the rear end of the shell 31 is formed with a rear opening which is communicated with the shell cavity 311, the front end of the shell 31 is formed with a front opening which is communicated with the shell cavity 311; the rear cover 1 is arranged at the rear opening, and a first sealing member 43 is arranged between the rear cover 1 and the shell 31; the front cover 44 is arranged at the front opening; the side of the rear cover 1 facing the shell cavity 311 is formed with a boss 11, and an oil pool 34 is formed between the rear cover 1, the boss 11 and the shell 31; the boss 11 is formed with a first bearing hole 12, and a first bearing 33 is arranged in the first bearing hole 12; the crankshaft 32 is arranged in the shell 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 part 321 near the first bearing 33; the motor is arranged in the shell cavity 311, and the motor comprises a rotor 41 and a stator 42, the rotor 41 is arranged around the outside of the crankshaft 32, and the rotor 41 and the crankshaft 32 are drivingly connected; the stator 42 is arranged around the outside of the rotor 41, and the stator 42 and the rotor 41 are connected by magnetism; when the stator 42 is supplied with alternating current, the rotor 41 can drive the crankshaft 32 to rotate;

[0057] The horizontal scroll compressor further comprises a bracket 51, a moving scroll 52 and a static scroll 53, the static scroll 53, the moving scroll 52 and the bracket 51 are sequentially arranged in the shell cavity 311 from front to back, the bracket 51 is formed with a bracket cavity 511, a second bearing hole and a bracket shaft hole which are sequentially arranged and communicated, the front end of the crankshaft 32 sequentially passes through the bracket shaft hole, the second bearing hole and the bracket cavity 511, and the crankshaft 32 and the second bearing hole are rotatably connected through a second bearing 54; the front end of the crankshaft 32 is formed with a second eccentric part 324, the second eccentric part 324 is located in the bracket cavity 511, and the second eccentric part 324 and the moving scroll 52 are rotatably connected through a third bearing 55; a second sealing element 56 is arranged between the rear end of the moving scroll 52 and the front end of the bracket 51 and between the rear end of the static scroll 53 and the front end of the bracket 51; the scroll teeth of the moving scroll 52 and the scroll teeth of the static scroll 53 are in rotary cooperation, the static scroll 53 is formed with a refrigerant exhaust port 531; the front cover 44 is formed with an oil storage cavity 441, the oil storage cavity 441 and the refrigerant exhaust port 531 are communicated, and the oil storage cavity 441 is used for collecting the lubricating oil discharged from the refrigerant exhaust port 531; an air outlet 442 is arranged above the oil storage cavity 441, and an oil-gas separator 57 is further arranged in the oil storage cavity 441, the lubricating oil and the refrigerant discharged through the refrigerant exhaust port 531 are separated through the oil-gas separator 57, most of the refrigerant is discharged through the air outlet 442, and the lubricating oil and a small part of the refrigerant fall to the bottom of the oil storage cavity 441;

[0058] The lower end of the front cover 44 is formed with a third oil channel 443, the lower end of the static scroll 53 is formed with a fourth oil channel 532, and the lower end of the bracket 51 is formed with a fifth oil channel 512, from front to back, the oil storage cavity 441, the third oil channel 443, the fourth oil channel 532, the fifth oil channel 512 and the bracket cavity 511 are sequentially communicated;

[0059] The boss 11 is formed with a lubricating cavity 13, an oil channel and a pump oil cavity 15 which are sequentially communicated, the lubricating cavity 13 and the first bearing hole 12 are communicated; the pump oil cavity 15 and the oil pool 34 are communicated through the oil hole 17, a slidable slide rod 21 is arranged in the pump oil cavity 15, one end of the slide rod 21 abuts against the first eccentric part 321; the other end of the slide rod 21 is provided with a piston 22, and an elastic element 23 is arranged between the piston 22 and the cavity wall of the pump oil cavity 15; under the action of the first eccentric part 321 and the elastic element 23, the slide rod 21 slides up and down in the pump oil cavity 15 with the piston 22, so that the pressure in the pump oil cavity 15 changes, and then the pump oil cavity 15 can suck oil and discharge oil; preferably, the elastic element 23 is a spring;

[0060] The first one-way piece 24 is arranged in the oil hole 17, and the first one-way piece 24 is configured to allow the oil in the oil pool 34 to enter the pump oil cavity 15 through the oil hole 17, and prevent the oil in the pump oil cavity 15 from entering the oil pool 34, so that the pump oil cavity 15 can smoothly perform the oil suction and discharge process; the second one-way piece 25 is arranged at the communication position of the oil channel and the lubricating cavity 13; and the second one-way piece 25 is configured to allow the oil in the oil channel to enter the lubricating cavity 13, and prevent the oil in the lubricating cavity 13 from entering the oil channel, so as to avoid the oil in the lubricating cavity 13 from flowing into the oil channel.

[0061] When the crankshaft 32 is controlled to rotate, the slide rod 21 can reciprocate in the pump oil cavity 15 under the action of the elastic piece 23 and the first eccentric part 321, and then 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 decreases, and the oil in the pump oil cavity 15 can enter the lubricating cavity 13 through the oil channel when the pressure in the pump oil cavity 15 increases.

[0062] Without the need to increase an additional power system, the structure is compact and the design is ingenious; as long as the horizontal scroll compressor is in a running state, the pump oil cavity 15 can continuously supply oil to the lubricating cavity 13 to circulate lubrication of the first bearing 33, so that the first bearing 33 is always in a lubricated state, solves the problem of poor lubrication of the first bearing 33 under extreme working conditions, improves the reliability of the first bearing 33, greatly reduces the failure rate of the first bearing 33, and thus prolongs 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; thus, the lubrication of the first bearing 33, the cooling of the lubricating oil, and the separation of the refrigerant in the lubricating oil can be realized; at the same time, the suction efficiency and the reliability of the compressor are improved; in addition, the first bearing 33 can be lubricated when the crankshaft 32 rotates forward and reversely.

[0063] Specifically, when the slide rod 21 slides away from the pump oil cavity 15, the pressure in the pump oil cavity 15 decreases, and the oil in the oil pool 34 can enter the pump oil cavity 15 through the oil hole 17; when the slide rod 21 slides towards the pump oil cavity 15, the pressure in the pump oil cavity 15 increases, and the oil in the pump oil cavity 15 can enter the lubricating cavity 13 through the oil channel.

[0064] The positions of the pump oil cavity 15 and the first eccentric part 321 affect the arrangement of the components in the housing cavity 311 and the timely delivery of the oil pool 34 to the lubricating cavity 13. The positions of the pump oil cavity 15 and the first eccentric part 321 are described as follows: the pump oil cavity 15 and the first eccentric part 321 are arranged in front of the first bearing hole 12; in the axial direction of the crankshaft 32, the position of the pump oil cavity 15 corresponds to the position of the first eccentric part 321; the pump oil cavity 15 extends in the radial direction of the crankshaft 32, so that the slide rod 21 can smoothly slide in the pump oil cavity 15 as the first eccentric part 321 rotates;

[0065] In the rotation direction of the first eccentric part 321, the first eccentric part 321 includes a near end and a far end; the first eccentric part 321 has a first state in which the near end abuts against the slide rod 21 and a second state in which the far end abuts against the slide rod 21 as the first eccentric part 321 rotates with the crankshaft 32; when the near end abuts against the slide rod 21, the slide rod 21 is away from the pump oil cavity 15; when the far end abuts against the slide rod 21, the slide rod 21 is close to the pump oil cavity 15;

[0066] When the first eccentric part 321 switches from the first state to the second state, the near end abutting against the slide rod 21 switches to the far end abutting against the slide rod 21, and the pump oil cavity 15 sucks oil from the oil pool 34; when the first eccentric part 321 switches from the second state to the first state, the far end abutting against the slide rod 21 switches to the near end abutting against the slide rod 21, and the pump oil cavity 15 delivers oil to the lubricating cavity 13.

[0067] Preferably, 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 cavity 15 is arranged below and in front of the first bearing hole 12, extends in the up-down direction, and the slide rod 21 can slide in the up-down direction under the action of the first eccentric part 321 and the elastic member 23 as the first eccentric part 321 rotates; the pump oil cavity 15 is provided with a guide block 16, the guide block 16 is formed with a guide hole, and the slide rod 21 is slidably arranged in the guide hole; one end of the slide rod 21 is arranged in the pump oil cavity 15, and the other end of the slide rod 21 abuts against the first eccentric part 321 through the guide hole, and the guide hole guides the slide rod 21; the lower end of the pump oil cavity 15 and the oil pool 34 are communicated through the oil hole 17; specifically, the oil hole 17 is located at the bottom of the pump oil cavity 15, so that when the oil content in the oil pool 34 is small, part of the oil can still enter the pump oil cavity 15, and then the part of the oil can enter the lubricating cavity 13 to lubricate the first bearing 33, prolong the service life of the first bearing 33, and ensure the reliable operation of the first bearing 33;

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

[0069] The structure and position of the oil channel have an influence on whether the oil can smoothly enter the lubricating cavity 13 from the pump oil cavity 15, and the structure and position of the oil channel are further described below. The lubricating cavity 13 is arranged at the rear of the first bearing hole 12, the contact area between the lubricating oil in the lubricating cavity 13 and the first bearing 33 is increased, and the lubricating effect of the first bearing 33 is ensured; preferably, the lubricating cavity 13 has a cylindrical structure, the lubricating cavity 13 and the first bearing hole 12 are coaxially arranged, the inner diameter of the lubricating cavity 13 is greater than the outer diameter of the outer ring of the first bearing 33 and less than the inner diameter of the outer ring of the first bearing 33; the oil in the lubricating cavity 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, the outer ring, the retainer and the rolling elements of the first bearing 33, and the lubrication is sufficient and comprehensive;

[0070] The oil channel includes a first oil channel 141 and a second oil channel 142, the pump oil cavity 15, the first oil channel 141, the second oil channel 142 and the lubricating cavity 13 are sequentially communicated; the lubricating oil in the pump oil cavity 15 enters the lubricating cavity 13 through the first oil channel 141 and the second oil channel 142 under the action of pressure;

[0071] The communication between the first oil channel 141 and the pump oil cavity 15 is located at the lower end of the pump oil cavity 15, so that as much oil as possible enters the lubricating cavity 13 through the first oil channel 141 and the second oil channel 142; the communication between the second oil channel 142 and the lubricating cavity 13 is located at the lower end of the lubricating cavity 13, so that as much oil as possible in the lubricating cavity 13 can flow through the gap between the inner ring and the outer ring of the first bearing 33, and more comprehensive and thorough lubrication of the first bearing 33 is achieved.

[0072] Further, the first oil channel 141 is located at the rear of the pump oil cavity 15 and the radial outer side of the first bearing hole 12, and the first oil channel 141 extends along the axial direction of the first bearing hole 12; the second oil channel 142 is located at the rear of the lubricating cavity 13, and the second oil channel 142 includes an oil channel segment A 143 and an oil channel segment B 144, the oil channel segment A 143 extends along the radial direction of the first bearing hole 12, and the oil channel segment B 144 extends along the axial direction of the first bearing hole 12;

[0073] The first oil passage 141, the oil passage section A 143, the oil passage section B 144 and the lubricating cavity 13 are communicated in sequence, on the one hand, the lubricating oil can flow through the first oil passage 141, the oil passage section A 143, the oil passage section B 144 and the lubricating cavity 13 smoothly, the flow rate of the lubricating oil is ensured, the problem that the lubricating oil is not stable and discontinuous is avoided, and the problem that the lubricating effect is poor is caused; on the other hand, the flow path of the lubricating oil is shortened, the problem that the lubricating effect is poor caused by the insufficient lubricating oil in the lubricating cavity 13 is avoided; in addition, the temperature of the lubricating oil can be reduced when the lubricating oil flows through the first oil passage 141, the oil passage section A 143 and the oil passage section B 144, the flowability and the lubricating effect of the lubricating oil are improved;

[0074] Preferably, the first oil passage 141 and the oil passage section B 144 extend along the horizontal direction, and the oil passage section A 143 extends along the up-down direction; the side wall of the pump oil cavity 15 is formed with a first oil discharge hole 17, the first oil discharge hole 17 communicates the pump oil cavity 15 and the oil pool 34; the lower end of the oil passage section A 143 and the oil pool 34 are communicated through a second oil discharge hole 17; when the oil is not needed to be discharged, the first oil discharge hole 17 and the second oil discharge hole 17 are both provided with a plug head 26; when the oil is needed to be discharged, the plug head 26 can be taken out; the oil passage can be cleaned in time, and the pressure can be released, so that the influence of the impurities in the oil passage on the oil conveying and the influence of the large pressure in the oil passage on the operation of the first bearing are avoided.

[0075] The structure of the first one-way piece 24 affects whether the oil hole 17 can be opened and closed in time, and affects the oil passing amount of the oil hole 17, which will be further described below; the first one-way piece 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 cavity 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 is connected with 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 gap-fitted; the valve core 243 and the second valve seat 242 are both formed with at least one oil groove 244, and the oil groove 244 of the valve core 243 and the oil groove 244 of the second valve seat 242 are communicated;

[0077] When the pressure in the pump oil cavity 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, and then the first valve seat 241 can open the oil hole 17;

[0078] When the pressure in the pump oil cavity 15 increases, the oil in the pump oil cavity 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 piece 24 is made of soft material, which can ensure the first valve seat 241 tightly seal the oil hole 17, and reduce the friction between the valve core 243 and the hole wall of the oil hole 17, reduce the wear and the noise when the first one-way piece 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 piece 25 affects the tightness of the opening and closing of the communication between the oil gallery and the lubricating cavity 13, and the oil flow of the oil hole 17. The structure of the second one-way piece 25 will be further described as follows: the second one-way piece 25 is a valve sheet, one end of the valve sheet is fixed on the rear wall of the lubricating cavity 13, and the other end of the valve sheet is arranged at the communication between the oil gallery and the lubricating cavity 13.

[0082] The valve sheet is elastic, and when the oil in the oil gallery flows to the lubricating cavity 13, the valve sheet can open the communication between the oil gallery and the lubricating cavity 13; when the oil in the lubricating cavity 13 flows to the oil gallery, the valve sheet can close the communication between the oil gallery and the lubricating cavity 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 enters the gap between the scroll teeth of the orbiting scroll 52 and the scroll 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, and the lubricating oil mixed with a small amount of refrigerant falls to the bottom of the oil storage cavity 57 and enters the support cavity 511 through the third oil gallery 443, the fourth oil gallery 532 and the fifth oil gallery 512 to lubricate the second bearing 54 and the third bearing 55; at the same time, with the rotation of the crankshaft 32, the slide rod 21 can reciprocate in the oil pumping cavity 15 under the action of the elastic member 23 and the first eccentric part 321, when the pressure in the oil pumping cavity 15 decreases, the oil in the oil pool 34 can enter the oil pumping cavity 15 through the oil hole 17, and when the pressure in the oil pumping cavity 15 increases, the oil in the oil pumping cavity 15 can enter the lubricating cavity 13 through the oil gallery to lubricate the first bearing.

[0084] In summary, the boss 11 is formed with the lubricating cavity 13, the oil channel and the pump oil cavity 15 communicated in sequence, the lubricating cavity 13 and the first bearing hole 12 are communicated, the pump oil cavity 15 and the oil pool 34 are communicated through the oil hole 17, the slide rod 21 is arranged in the pump oil cavity 15, one end of the slide rod 21 and the first eccentric part 321 abut together, the other end of the slide rod 21 is provided with the piston 22, the elastic element 23 is arranged between the piston 22 and the cavity wall of the pump oil cavity 15, under the action of the elastic element 23 and the first eccentric part 321, the slide rod 21 can reciprocate in the pump oil cavity 15 when the crankshaft 32 is controlled to rotate, then when the pressure in the pump oil cavity 15 decreases, the oil in the oil pool 34 enters 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 enters the lubricating cavity 13 through the oil channel, the structure is compact, the lubrication effect is obvious, when the crankshaft 32 rotates, the pump oil cavity 15 can continuously supply oil to the lubricating cavity 13, the continuous and circulating lubrication of the first bearing 33 is realized, the reliability of the first bearing 33 is improved, the failure rate of the first bearing 33 is greatly reduced, the service life of the first bearing 33 is prolonged, the problem of poor lubrication of the first bearing 33 under extreme working conditions is solved, the oil contacts and exchanges heat with the first bearing 33, and the cooling effect is achieved, the 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, the suction efficiency of the compressor is improved, and the reliable operation of the compressor is ensured.

[0085] Embodiment 2

[0086] The oil level in the oil pool 34 affects the amount of oil in the pump oil cavity 15, when the oil level in the oil pool 34 is low, the amount of oil in the pump oil cavity 15 is small, when the oil level in the oil pool 34 is high, the amount of oil in the pump oil cavity 15 is large, therefore, the lower end of the shell 31 is formed with a protrusion in front of the pump oil cavity 15 in the embodiment, the protrusion, the lower end of the shell 31, the lower end of the boss 11 and the lower end of the rear cover 1 surround the oil pool 34.

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

[0088] Embodiment 3

[0089] On the basis of the embodiments 1 and / or 2, the pump oil cavity 15 and the oil channel are provided with a plurality of pump oil cavities 15 in the embodiment, the plurality of pump oil cavities 15 are arranged along the circumference of the first bearing hole 12, the plurality of pump oil cavities 15 and the plurality of oil channels are one-to-one corresponding, and each pump oil cavity 15 lubricating cavity 13 is communicated through the corresponding oil channel.

[0090] When the crankshaft 32 is controlled to rotate, the proximal end of the first eccentric part 321 abuts against the slide rod 21 in the plurality of pump oil chambers 15 in turn, and then the plurality of pump oil chambers 15 can all supply oil to the lubricating chamber 13.

[0091] Embodiment 4

[0092] On the basis of Embodiment 1 and / or 2, this embodiment proposes that the pump oil chamber 15 and the oil passage are both provided with a plurality of, 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 one-to-one, each pump oil chamber 15 is communicated with the lubricating chamber 13 through the corresponding oil passage; the first eccentric part 321 is provided with a plurality of, 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 slide rod 21 in the plurality of pump oil chambers 15 are arranged one-to-one;

[0093] When the crankshaft 32 is controlled to rotate, the proximal end of each first eccentric part 321 abuts against the corresponding slide rod 21, and then the plurality of pump oil chambers 15 can all supply oil to the lubricating chamber 13.

[0094] Embodiment 5

[0095] On the basis of Embodiment 1 and / or 2, this embodiment proposes that the second oil passage 142 is provided with a plurality of, the communication between the plurality of second oil passages 142 and the lubricating chamber 13 is arranged at intervals on the rear wall of the lubricating chamber 13, and each second oil passage 142 is provided with a nozzle at the communication with the lubricating 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 lubricating chamber 13 through different nozzles, and then flows to different parts of the first bearing 33, so as to realize 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 structure, arrangement or implementation method described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements within the spirit and scope of the appended claims.

Claims

1. A horizontal scroll compressor, characterized in that, It includes a housing (31), a rear cover (1) and a crankshaft (32). The housing (31) has a housing cavity (311) inside, and the rear end of the housing (31) has a rear opening communicating with the housing cavity (311). The rear cover (1) is provided over the rear opening. A boss (11) is formed on the side of the rear cover (1) facing the housing cavity (311). An oil sump (34) is formed between the rear cover (1), the boss (11) and the housing (31). A first bearing hole (12) is formed in the boss (11). A first bearing (33) is provided in the first bearing hole (12). The crankshaft (32) is provided in the housing cavity (311), and the rear end of the crankshaft (32) is rotatably provided in the first bearing (33). A first eccentric portion (321) is formed on the crankshaft (32) near the first bearing (33). The boss (11) has a lubrication chamber (13), an oil passage and a pumping chamber (15) connected in sequence. The lubrication chamber (13) is connected to the first bearing hole (12). The pumping chamber (15) is connected to the oil sump (34) through an oil hole (17). A sliding rod (21) is provided in the pumping chamber (15). One end of the sliding rod (21) abuts against the first eccentric part (321). The other end of the sliding rod (21) is provided with a piston (22). An elastic element (23) is provided between the piston (22) and the cavity wall of the pumping chamber (15). A first one-way component (24) is provided inside the oil hole (17). The first one-way component (24) is configured such that oil in the oil pool (34) can enter the pump oil chamber (15) through the oil hole (17), while oil in the pump oil chamber (15) cannot enter the oil pool (34) through the oil hole (17). A second one-way component (25) is provided at the connection between the oil passage and the lubrication chamber (13). The second one-way component (25) is configured such that oil in the oil passage can enter the lubrication chamber (13), while 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 element (23) and the first eccentric part (321), the slide rod (21) can slide back and forth in the oil pump chamber (15). When the pressure in the oil pump chamber (15) decreases, the oil in the oil sump (34) can enter the oil pump chamber (15) through the oil hole (17). When the pressure in the oil pump chamber (15) increases, the oil in the oil pump 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 oil pump chamber (15) and the first eccentric part (321) are both located in front of the first bearing hole (12); in the axial direction of the crankshaft (32), the position of the oil pump chamber (15) corresponds to the position of the first eccentric part (321); the oil pump chamber (15) extends radially along the crankshaft (32); Along the rotation direction of the first eccentric portion (321), the first eccentric portion (321) includes a proximal end and a remote end; when the first eccentric portion (321) rotates with the crankshaft (32), it has a first state in which the proximal end abuts against the slide rod (21) and a second state in which the remote end abuts against the slide rod (21); When the first eccentric part (321) switches from the first state to the second state, the oil pump chamber (15) draws oil from the oil sump (34); when the first eccentric part (321) switches from the second state to the first state, the oil pump chamber (15) supplies oil to the lubrication chamber (13).

3. The horizontal scroll compressor according to claim 2, characterized in that, An oil sump (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 oil pump chamber (15) is located below the first bearing hole (12) and extends in the vertical direction; a guide block (16) is provided in the oil pump chamber (15), the guide block (16) forms a guide hole, and the slide rod (21) is slidably provided in the guide hole; the lower end of the oil pump chamber (15) and the oil sump (34) are connected through the oil hole (17); When the first eccentric part (321) switches from the first state to the second state, the slide rod (21) slides upward; when the first eccentric part (321) switches from the second state to the first state, the slide rod (21) slides downward.

4. The horizontal scroll compressor according to claim 2 or 3, characterized in that, The lubrication chamber (13) is located behind the first bearing hole (12); the oil passage includes a first oil passage (141) and a second oil passage (142), and 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 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 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 axially along the first bearing hole (12); the second oil passage (142) is located behind the lubrication chamber (13), and the second oil passage (142) includes oil passage segment A (143) and oil passage segment B (144), the oil passage segment A (143) extends radially along the first bearing hole (12), and the oil passage segment B (144) extends axially along the first bearing hole (12); The first oil passage (141), oil passage segment A (143), oil passage segment B (144) and lubrication cavity (13) are connected in sequence.

6. The horizontal scroll compressor according to claim 1, characterized in that, The first one-way component (24) includes a first valve seat (241), a second valve seat (242), and a valve core (243). The first valve seat (241) is disposed in the pump oil chamber (15), and the second valve seat (242) is disposed in the oil sump (34). The valve core (243) is disposed 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 in clearance fit; the second valve seat (242) has 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), thereby 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 the first valve seat (241) can then close the oil hole (17).

7. The horizontal scroll compressor according to claim 6, characterized in that, The first unidirectional component (24) is made of a soft material.

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

9. The horizontal scroll compressor according to claim 2, characterized in that, The lower end of the housing (31) forms a protrusion in front of the oil pump chamber (15), and the protrusion, 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 sump (34).

10. The horizontal scroll compressor according to claim 2, characterized in that, The pump oil chamber (15) and oil passage are provided in multiple ways. The multiple pump oil chambers (15) are arranged at circumferential intervals along the first bearing hole (12). The multiple pump oil chambers (15) and the multiple oil passages are arranged in a one-to-one correspondence. The lubrication chamber (13) of each pump oil chamber (15) is connected through the corresponding oil passage. When the crankshaft (32) is controlled to rotate, the proximal end of the first eccentric part (321) abuts against the slide rod (21) in a plurality of oil pump chambers (15) in sequence, so that the plurality of oil pump chambers (15) can supply oil to the lubrication chamber (13).

Images