CN217873276U - Compressor and refrigeration equipment - Google Patents

Abstract

The utility model discloses a compressor and refrigeration plant, this compressor include compressor main part and reservoir, and wherein, the compressor main part has the suction hole, and the reservoir cladding is formed with the stock solution chamber in the lateral wall of compressor main part, reservoir, stock solution chamber and suction hole intercommunication. The utility model provides a compressor's size is little, and occupation space is little, is favorable to refrigerating plant's miniaturization, practices thrift manufacturing cost.

Description

Compressor and refrigeration equipment

Technical Field

The utility model relates to a compressor technical field, especially a compressor and refrigeration plant.

Background

In the related art, a rotor compressor generally adopts a structure in which a pump body is disposed below a compressor body, and a reservoir is disposed outside the compressor as an important component for gas-liquid separation. After gas-liquid separation is carried out on the refrigerant entering from the liquid accumulator, the gaseous refrigerant enters the cylinder and is compressed and then discharged, and the liquid refrigerant is stored in the liquid accumulator. Because the volume of the liquid refrigerant is far smaller than that of the gas refrigerant, the problem of low efficiency caused by overlarge amount of the refrigerant in the system under a low-load working condition can be solved.

When the liquid storage device is arranged outside the compressor main body, the space required by the compressor is large, the space of the whole system is correspondingly increased, and the system cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a compressor and refrigeration plant aims at effectively utilizing the space, the lowering system cost.

In order to achieve the above object, the present invention provides a compressor comprising:

a compressor body having a suction hole;

the liquid storage device covers the outer side wall of the compressor main body, a liquid storage cavity is formed in the liquid storage device, and the liquid storage cavity is communicated with the suction hole.

In one embodiment, the accumulator is disposed around an outer sidewall of the compressor body.

In one embodiment, the compressor body includes a first housing, and the accumulator includes a second housing, and the second housing and the first housing form the reservoir chamber therebetween.

In one embodiment, the upper end and the lower end of the second shell are arranged in a necking manner.

In an embodiment, the wall thickness of the second housing is not less than 2mm.

In one embodiment, the air suction hole is opened in the upper half of the first housing.

In one embodiment, the height difference between the air suction hole and the top of the liquid storage cavity is H1, the height of the liquid storage cavity is H2, and the value of H1/H2 is greater than 0.1 and less than 0.5.

In an embodiment, the compressor main body further includes a pump body and a motor, the pump body and the motor are both disposed in the first housing, and the pump body is located above the motor.

In one embodiment, the pump body is provided with an air suction port, the compressor further comprises a switching tube, one end of the switching tube penetrates through the air suction hole and is communicated with the liquid storage cavity, and the other end of the switching tube is inserted into the air suction port so as to communicate the air suction port with the liquid storage device.

In one embodiment, the outer wall of the adapter tube is hermetically connected with the inner wall of the air suction hole, and the outer wall of the adapter tube is hermetically connected with the inner wall of the air suction hole.

In one embodiment, the adapter tube is sleeved with a sealing gasket, a part of the sealing gasket is arranged between the outer wall of the adapter tube and the inner wall of the air suction hole, and another part of the sealing gasket is arranged between the outer wall of the adapter tube and the inner wall of the air suction hole.

In one embodiment, a first sealing ring is arranged between the outer wall of the adapter tube and the inner wall of the air suction hole, and a second sealing ring is arranged between the outer wall of the adapter tube and the inner wall of the air suction hole.

In an embodiment, be equipped with oil return structure in the stock solution intracavity, oil return structure's bottom is located stock solution chamber bottom, oil return structure's top extends to the switching pipe is kept away from the one end mouth of pipe of the pump body.

In one embodiment, the oil return structure is an oil return pipe.

In an embodiment, the oil return structure is an annular multi-channel structure, and the annular multi-channel structure is disposed around an outer side wall of the first housing.

In an embodiment, the compressor main body includes a first housing, and further includes an oil baffle plate disposed in the first housing, and the oil baffle plate and the bottom of the first housing form an oil storage chamber.

In one embodiment, the liquid storage device is provided with an air inlet so that the liquid storage cavity is communicated with the outside of the compressor, and an included angle is formed between a connecting line of the air inlet and the axis of the compressor and a connecting line of the air suction hole and the axis of the compressor and is larger than 90 degrees.

In one embodiment, the air inlet is arranged at the upper part of the liquid storage device, the air inlet is provided with an air inlet pipe, and a filter screen is arranged in the air inlet pipe.

In an embodiment, the outer wall of the compressor body and/or the inner wall of said accumulator is provided with an insulating structure.

The utility model discloses still provide a refrigeration plant, refrigeration plant includes as above-mentioned arbitrary embodiment the compressor.

The utility model discloses through the reservoir cladding with the compressor in the lateral wall of compressor main part among the technical scheme, and be formed with the stock solution chamber in the reservoir, reached the purpose that reduces the size of compressor for the compressor occupation space is little, has reduced the system cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of a compressor in the prior art;

fig. 2 is a schematic structural view of an embodiment of the compressor of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a schematic structural view of a second housing of the compressor of FIG. 2;

fig. 5 is a schematic structural diagram of an embodiment of the compressor of the present invention;

FIG. 6 is an enlarged view at C of FIG. 5;

FIG. 7 is a schematic structural view of a second housing of the compressor of FIG. 5;

fig. 8 is a transverse cross-sectional view of the first shell in an embodiment of the compressor of the present invention;

FIG. 9 is an enlarged view at B in FIG. 8;

fig. 10 is a schematic structural view of a liquid reservoir in an embodiment of the compressor of the present invention;

fig. 11 is a cross-sectional view of an embodiment of the compressor of the present invention.

The reference numbers indicate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if the present invention relates to a directional indication, the directional indication is only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "a and/or B" as an example, including either the a aspect, or the B aspect, or both the a and B aspects. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The air conditioner compressor 10 functions to compress and drive the refrigerant in the refrigerant circulation circuit, and pumps the refrigerant from the low-pressure region, compresses the refrigerant, and sends the compressed refrigerant to the high-pressure region for cooling and condensation. The accumulator 200 is used to store the condensate of the condenser, and to meet the demand of the load change of the evaporator for the supply amount, and is used as the liquid seal between the high-pressure side and the low-pressure side of the system. After the gas-liquid separation of the refrigerant entering from the accumulator 200, the gaseous refrigerant enters the pump body 120 and is compressed and discharged, and the liquid refrigerant is stored in the accumulator 200. Because the volume of the liquid refrigerant is far smaller than that of the gas refrigerant, the problem of low efficiency caused by overlarge amount of the refrigerant in the system under a low-load working condition can be solved. Referring to fig. 1, the liquid storage tank of the conventional rotor type compressor 10 is disposed at the side of the compressor main body 100, which results in a large overall size of the compressor 10 and a large occupied space, resulting in a corresponding increase in the overall system space and a high system cost.

The present invention provides a compressor 10, the compressor 10 includes a compressor main body 100 and a liquid storage device 200, please refer to fig. 2 to 6, in an embodiment of the present invention, the compressor main body 100 has a suction hole 101; the reservoir 200 is covered on the outer side wall of the compressor body 100, a reservoir chamber 210 is formed in the reservoir 200, and the reservoir chamber 210 is communicated with the suction hole 101.

Generally, the compressor 10 is classified into a piston compressor 10, a screw compressor 10, a centrifugal compressor 10, a linear compressor 10, and the like. The piston compressor 10 generally consists of a housing, a motor, a pump body 120, pistons, control equipment and a cooling system. The cooling modes include oil cooling, air cooling and natural cooling. The present invention relates to a compressor 10 that uses oil cooling.

The compressor body 100 is a main body member of the compressor 10, and is configured to suck the cooling gas passing through the liquid storage chamber 210 through the suction port 121, and then compress and discharge the cooling gas. Generally, the compressor main body 100 includes a first housing 110, and a motor 130 and a pump body 120 provided in the first housing 110. First casing 110 has first cavity and with the gas vent in has, and pump body 120 has the axis of rotation, and the axis of rotation is connected with motor 130 rotor, and the suction opening 101 and the stock solution chamber 210 intercommunication of pump body 120, motor 130 drive axis of rotation and make pump body 120 compressed gas, promptly realize compressed gas's compression by pump body 120. In other embodiments, the compressed gas may be realized by other methods, which are not described herein.

Further, the compressor 10 is a rolling rotor compressor 10, and the pump body 120 may be a single cylinder, or may also be two cylinders or multiple cylinders.

It will be understood that the pump body 120 generally has a low-pressure gas inlet, generally called suction port 121, and a high-pressure gas outlet, also called discharge port, communicating with the first cavity, and the first casing 110 is also provided with a discharge port communicating with the first cavity, and also communicating with a discharge pipe, so as to discharge the high-pressure gas inside the casing of the compressor 10. The suction port 121 of the pump body 120 and the suction hole 101 of the first housing 110 have a certain gap therebetween, and the suction port 121 and the suction hole 101 may be communicated through a connection pipe to suck and compress the low-pressure gas in the reservoir chamber 210 into the pump body 120.

Preferably, the discharge port is disposed at the upper portion of the first housing 110, in consideration that the high-pressure gas generally discharged from the compressor 10 is a mixture of a part of oil, and the distance from the high-pressure gas outlet of the pump body 120 to the discharge port can be extended by disposing the discharge port at the upper portion of the first housing 110, so that the oil in the high-pressure gas can be separated therefrom by extending the distance, thereby reducing the oil content of the high-pressure gas when it enters the discharge pipe.

Alternatively, for example, the compressor body 100 is cylindrical, the reservoir 200 may completely wrap the outer side wall of the compressor body 100, and the high-pressure air in the compressor body 100 may be led out through the exhaust pipe. This scheme is equivalent to on the basis with compressor body 100, radial proportion increases, form the reservoir 200 of cladding compressor body 100, thus, increase under the less circumstances of compressor 10 holistic external diameter, make the volume of reservoir 200 can be great, the inside holding chamber of reservoir 200 can satisfy bigger capacity demand, satisfy compressor main part 100's user demand, and then make compressor 10 occupation space reduce, thereby refrigeration plant 1 need not to reserve this compressor 10 of great space installation, be favorable to refrigerating plant's miniaturization, and the production cost is saved. The liquid storage cavity 210 may be formed in the liquid storage device 200, for example, the liquid storage device 200 is provided with an interlayer space, the inner wall surface of the liquid storage cavity 210 and the outer wall surface of the compressor body 100 may be arranged at intervals to enclose the liquid storage device 200, or a part of the liquid storage device 200 is provided with an interlayer space, and a part of the inner wall surface and the outer wall surface of the compressor body 100 are arranged at intervals to form the liquid storage cavity 210 together, which is not limited herein. Of course, the accumulator 200 may only cover a portion of the outer sidewall of the compressor body 100, for example, the accumulator 200 may cover an upper half or a lower half of the compressor body 100.

In one embodiment, the accumulator 200 is disposed around an outer sidewall of the compressor body 100.

In this embodiment, as shown in fig. 2, the compressor main body 100 is disposed in a cylindrical shape, the accumulator 200 is simplified as a single-layer shell that is disposed around the compressor main body 100, and an independent cavity is formed between the accumulator 200 and an outer sidewall of the compressor main body 100, and the cavity is a liquid storage cavity 210. Because the liquid storage device 200 is only disposed around the outer side wall of the compressor body 100, the liquid storage device 200 may be consistent with the compressor body 100 or smaller than the compressor body 100 in the height direction, so that the volume of the liquid storage cavity 210 is larger under the condition of not increasing the height of the compressor 10 and slightly increasing the outer diameter, and the usage requirement of the compressor 10 is met, so as to ensure the usage performance of the compressor 10 and further reduce the volume of the compressor 10.

In one embodiment, the compressor body 100 includes a first housing 110, the accumulator 200 includes a second housing 220, and the second housing 220 and the first housing 110 form the reservoir 210 therebetween.

In the present embodiment, taking the first housing 110 as a cylinder as an example, the second housing 220 is also arranged in a cylinder and spaced from the first housing 110, and the upper and lower ends of the second housing 220 can be fixed on the outer sidewall of the first housing 110 by welding. Thus, the gap between the first housing 110 and the second housing 220 encloses the reservoir 210 without processing the reservoir 210 inside the reservoir 200, so that the structure of the reservoir 200 is simpler and more convenient. And the volume of the reservoir 210 is maximized when the volume of the compressor 10 is constant, thus further reducing the volume of the compressor 10 and making the assembly of the reservoir 200 and the compressor 10 simpler.

It should be noted that, in other embodiments, as shown in fig. 10, the first casing 110 and the second casing 220 may be integrally formed.

In an embodiment, as shown in fig. 7, the upper and lower ends of the second housing 220 are set in a form of a reduced opening. So design, the area of contact between the upper end of second casing 220 and the lateral wall of lower extreme and first casing 110 is bigger, the outer wall welded fastening of first casing 110 that can be better, simultaneously, this second casing 220 can obtain by integrated into one piece, low in production cost, and it is more convenient to process.

It should be noted that, as shown in fig. 2 and fig. 4, the second casing 220 may also be composed of a three-section structure, which includes an upper section, a cylinder section and a lower section connected in sequence, wherein the upper section is in a shape of a back-off bowl, and covers the upper end of the cylinder section, the upper end of the upper section is welded and fixed to and hermetically connected to the first casing 110, the lower section is in a cylinder shape tapering from top to bottom, and one end of the lower section away from the cylinder section is welded and fixed to and hermetically connected to the first casing 110. The lower section is inserted into the cylinder section, and the upper end of the cylinder section is inserted into the upper section, and the cylinder section and the upper section are connected by furnace welding or resistance welding, so that the manufacturing process of the second shell 220 is simpler.

The first housing 110 may be an integral piece formed integrally, or may be a three-stage structure. In an embodiment, as shown in fig. 2 and 5, the first casing 110 includes a first cup 111, a cylinder 112, and a second cup 113 sequentially connected from top to bottom along an axial direction of the compressor main body 100, and the first cup 111, the cylinder 112, and the second cup 113 enclose a first cavity for mounting the power supply 130 and the pump body 120.

Alternatively, the first cup 111, the cylinder 112, and the second cup 113 are provided separately. The first cup 111 is equivalent to a cup cover arranged in a cap shape, the cylinder 112 is equivalent to a cup body arranged in a cylindrical shape, the second cup 113 is equivalent to a cup bottom with a U-shaped longitudinal section, and the first cup and the second cup are mutually connected from top to bottom to form a first cavity for installing the power supply 130 and the pump body 120.

In one embodiment, the wall thickness of the second housing 220 is not less than 2mm.

It can be understood that, since at least the first housing 110 is separated from the compressed gas in the compressor main body 100 by the second housing 220, and the suction pressure inside the liquid storage chamber 210 is relatively low, the wall thickness of the second housing 220 can be reduced properly, and meanwhile, to ensure the structural strength of the second housing 220 and prevent the second housing 220 from deforming from the position of the suction port 121, the wall thickness of the second housing 220 needs to be greater than 2mm, and the wall thickness of the second housing 220 is t, i.e. t is greater than or equal to 2mm, so as to ensure the overall strength of the compressor 10.

In one embodiment, the air suction hole 101 is opened at an upper half portion of the first housing 110.

It should be noted that, in the present embodiment, the gas and the liquid in the liquid storage cavity 210 are not separated, so that when the amount of the liquid in the liquid storage cavity 210 exceeds the suction hole 101 of the compressor main body 100 during the operation of the compressor 10, the suction port 121 of the pump body 120 sucks more liquid, and a liquid hammering phenomenon occurs, and the reliability of the compressor 10 is reduced because the liquid is incompressible. To avoid this problem, the suction port 121 of the compressor main body 100 cannot be too low, and the suction hole 101 is preferably opened in the upper half of the first casing 110.

In one embodiment, as shown in fig. 2 and 5, the height difference between the suction hole 101 and the top of the reservoir 210 is H1, the height of the reservoir 210 is H2, and the value of H1/H2 is greater than 0.1 and less than 0.5.

Wherein, the height H2 of the liquid storage cavity 210 is the vertical distance between the plane of the bottom end and the top end of the liquid storage cavity 210, and the height difference H1 between the top end of the air suction hole 101 and the liquid storage cavity 210 is the vertical distance between the plane of the top end of the liquid storage cavity 210 and the plane of the central point of the air suction hole 101. Through utility model people's trial and error verification, when H1H 2's value is 0.1, 0.2, 0.3, 0.4, 0.5 and arbitrary numerical value between them, can guarantee the interior sufficient liquid refrigerant storage space of reservoir 200, compressor 10's reliability is higher.

In this embodiment, the compressor main body 100 further includes a pump body 120 and a motor 130, the pump body 120 and the motor 130 are both disposed in the first housing 110, and the pump body 120 is located above the motor 130.

It should be noted that, the conventional rotary compressor 10 generally adopts a structure with the pump body 120 disposed thereunder, in the structure with the pump body 120 disposed thereunder, the suction hole 101 of the compressor main body 100 is disposed at the lower portion, so the gaseous refrigerant in the accumulator 200 must be introduced into the lower space, and the gaseous refrigerant is stored at the upper portion of the accumulator 200 due to the low density of the gaseous refrigerant, and the liquid refrigerant is stored at the lower portion of the accumulator 200, so a flow channel is required to be added for leading out the gas, and the overall structure of the compressor 10 is relatively complex. Therefore, in the embodiment, the pump body 120 is disposed above the motor 130, so that the suction port 121 of the pump body 120 can directly suck the gaseous refrigerant in the upper portion of the accumulator 200, and an extra flow channel is not required to be added to introduce the gaseous refrigerant in the accumulator 200, thereby simplifying the overall structure of the compressor body 100. Meanwhile, the lower part of the compressor 10 stores liquid refrigerants, the motor 130, the refrigerating oil and the like, the whole gravity center is more deviated to the lower part, and the compression vibration resistance is better.

Referring to fig. 2 and fig. 3, in an embodiment of the present invention, the compressor 10 further includes an adapter tube 300 penetrating through the suction hole 101, the pump body 120 has the suction port 121, the liquid storage chamber 210 is communicated with the suction port 121 through the adapter tube 300, an outer wall of the adapter tube 300 is connected to an inner wall of the suction port 121 in a sealing manner, and an outer wall of the adapter tube 300 is connected to an inner wall of the suction hole 101 in a sealing manner.

It should be noted that, the refrigerant in the liquid storage chamber 210 must pass through the first casing 110 when entering the pump body 120, so that the suction hole 101 is disposed at a position of the first casing 110 corresponding to the suction port 121 of the pump body 120, so that the suction port 121 and the suction hole 101 are directly communicated through the adapter tube 300, so as to suck the low-pressure gas in the liquid storage chamber 210 into the pump body 120 for compression, thereby reducing the internal piping of the compressor main body 100. In order to maintain the air inflow of the pump body 120 and improve the compression efficiency, one end of the adapter tube 300 is inserted into the air suction port 121, the outer wall of the adapter tube 300 is connected with the inner wall of the air suction port 121 in a sealing manner, the other end of the adapter tube 300 penetrates out of the air suction hole 101, and the outer wall of the adapter tube 300 is connected with the inner wall of the air suction hole 101 in a sealing manner, so that the low-pressure gas in the liquid reservoir 200 is introduced into the pump body 120.

Further, the suction port 121 of the pump body 120 is in clearance fit with the inner wall of the first housing 110, so that the adapter tube 300 can simultaneously play a role in fixedly mounting the pump body 120 on the first housing 110 while the adapter tube 300 introduces the gas in the liquid storage chamber 210.

In an embodiment of the present invention, as shown in fig. 5 and fig. 6, a sealing gasket 310 is sleeved outside the adapter tube 300, a part of the sealing gasket 310 is disposed on the outer wall of the adapter tube 300 and the inner wall of the suction port 121, and another part of the sealing gasket 310 is disposed between the outer wall of the adapter tube 300 and the inner wall of the suction hole 101.

It should be noted that, since the pump body 120 is installed in the main housing, and the pump body is in clearance fit with the main housing, different pressure areas exist at the position of the air suction port 121 of the pump body 120, and low-pressure gas entering from the liquid storage cavity 210 is inside the pump body 120; the gap between the pump body 120 and the first casing 110 is a high-pressure gas to be discharged after compression, and the gas in the reservoir 210 is sucked in at a low pressure, so the suction port 121 of the pump body 120 and the suction port 121 of the first casing 110 need to be sealed at the same time. The adapter tube 300 is disposed inside the compressor 10, so that the space is small, and the operation is inconvenient due to the difficulty of conventional sealing methods such as welding. Therefore, in this embodiment, a sealing gasket 310 is sleeved outside the adapter tube 300, and the sealing gasket 310 is made of a deformable plastic material and is disposed in a cylindrical shape so as to be sleeved on the adapter tube 300. During assembly, the air suction hole 101 of the first housing 110 is aligned with the air suction port 121 of the pump body 120, the cylindrical sealing gasket 310 is firstly installed in the air suction port 121, the adapter tube 300 sequentially passes through the air suction hole 101 and the air suction port 121, the sealing gasket 310 is sleeved on the adapter tube 300, and the sealing gasket 310 is pressed under stress to achieve a good sealing effect. At this time, there may be a small amount of gaps between the outer wall of the adapter tube 300 and the sealing gasket 310, between the sealing gasket 310 and the inner wall of the suction port 121, and between the sealing gasket 310 and the inner wall of the suction hole 101, and the adapter tube 300 expands to expand the inner diameter by the device, so that the adapter tube 300 compresses the sealing gasket 310 and then removes the gaps, thereby achieving the inner and outer sealing and ensuring the reliability of the compressor 10.

In one embodiment, as shown in fig. 2 and 3, a first sealing ring 320 is disposed between the outer wall of the adapter tube 300 and the inner wall of the air suction hole 121, and a second sealing ring 330 is disposed between the outer wall of the adapter tube 300 and the inner wall of the air suction hole 101.

Optionally, the first sealing ring 320 and the second sealing ring 330 include but are not limited to O-ring seals, at this time, a first annular sealing groove for the first sealing ring 320 to be clamped into is formed on an inner wall surface of the air suction port 121 of the cylinder, correspondingly, a second annular sealing groove for the second sealing ring 330 to be clamped into is formed on an inner wall surface of the air suction hole 101 of the first casing 110, the first sealing ring 320 and the second sealing ring 330 are respectively clamped into the first annular sealing groove and the second annular sealing groove, and then the adapter tube 300 is inserted, which may also achieve a sealing effect.

In an embodiment, an oil return structure 400 is disposed in the liquid storage cavity 210, a bottom end of the oil return structure 400 is located at a bottom of the liquid storage cavity 210, and a top end of the oil return structure 400 extends to a pipe opening at an end of the adapter tube 300 far away from the pump body 120.

It should be noted that, since the gas entering the liquid storage cavity 210 contains oil, after the gas enters the liquid storage cavity 210 for gas-liquid separation, the oil will gradually deposit at the bottom of the liquid storage cavity 210, and in order to bring the oil back to the compression system for circulation, the oil will not return to the compressor 10 until the liquid level in the liquid storage 200 is higher than the air inlet. The bottom end of the oil return structure 400 is disposed at the bottom of the liquid storage chamber 210, and the top end of the oil return structure 400 is communicated with the adapter tube 300. The oil return structure 400 can suck the liquid in the reservoir 200 higher than the bottom of the oil return structure 400 into the adapter tube 300, and the liquid enters the pump body 120 through the adapter tube 300.

In one embodiment, as shown in fig. 5, the oil return structure 400 is an oil return pipe 410, one end of the oil return pipe 410 is at the bottom of the reservoir 200, and the other end thereof is inserted into the cylinder inlet, so as to suck the oil into the cylinder by using bernoulli effect, thereby achieving the effect of bringing the oil back to the compression system for circulation.

In one embodiment, as shown in fig. 2, 8 and 9, the oil return structure 400 is an annular multi-channel structure, and the annular multi-channel structure is disposed around an outer sidewall of the first casing 110.

Optionally, a plurality of channels are arranged on the inner wall of the first housing 110 in the main housing ring and extend in the vertical direction to form the annular multi-channel structure, the lower end of each channel is arranged near the bottom of the liquid storage cavity 210, the upper end of each channel extends to the position of the air inlet 201 of the cylinder body, and liquid at the bottom rises to the top through a capillary effect and is brought into the compression cavity by the air flow of the air inlet 201 to finish oil return.

In an embodiment of the present invention, the compressor main body 100 includes the first casing 110, and further includes an oil baffle 140 disposed in the first casing 110, wherein the oil baffle 140 and a bottom of the first casing 110 form an oil storage cavity 150.

It should be noted that, considering that the high-pressure gas discharged from the compressor 10 is mixed with a part of oil, the distance from the high-pressure gas outlet of the pump body 120 to the exhaust port can be extended by disposing the exhaust port at the upper portion of the first housing 110, and the gas outlet of the pump body 120 is disposed downward, so that the oil in the high-pressure gas can be separated therefrom by extending the distance, thereby reducing the oil content of the high-pressure gas entering the exhaust pipe 500.

In this embodiment, since the pump body 120 is disposed above the motor 130, the high-pressure gas compressed by the pump body 120 stirs the refrigeration oil disposed at the bottom of the compressor body 100 when flowing downward, which results in an excessive oil content in the high-pressure gas discharged from the gas outlet and affects the reliability of the compressor 10. Based on this, in this embodiment, by additionally providing the oil baffle 140, the peripheral wall of the oil baffle 140 is fixedly connected to the inner wall of the compressor main body 100, so as to prevent the high-pressure gas ejected from the pump body 120 from disturbing the oil at the bottom, and meanwhile, the oil baffle 140 is provided with a small hole, so that the airflow mixed refrigerant oil compressed by the pump body 120 is discharged through the high-pressure gas outlet provided on the bearing of the pump body 120, and a part of the airflow mixed refrigerant oil directly rises and is discharged through the exhaust port provided on the first housing 110, and a part of the airflow mixed refrigerant oil falls down to cool the motor 130 and then can enter the oil storage chamber 150. The pump body 120 performs oil-gas separation on the discharged high-pressure gas in the flowing process, the refrigerant oil falls to the bottom, and the gas is discharged out of the compressor 10. The frozen oil at the bottom rises through the crankshaft, lubricates structures such as a bearing, a sliding vane and the like, and is mixed with the air flow to be discharged, so that the circulation is completed.

In an embodiment, as shown in fig. 11, the liquid storage device 200 is provided with an air inlet 201 communicated with the liquid storage device 200 to introduce external air into the liquid storage cavity 210, and a connection line D between the air inlet 201 and an axis of the compressor 10 forms an included angle with a connection line E between the air suction hole 101 and the axis of the compressor 10, where the included angle is greater than 90 °.

It is understood that the gas entering the reservoir chamber 210 from the gas inlet 201 may not be completely separated into gas and liquid, and may be sucked into the compressor 10 by the gas suction hole 101, the closer the shortest distance between the gas inlet 201 and the gas suction hole 101 is in the three-dimensional space in the reservoir chamber 210. Therefore, it is necessary to appropriately extend the time during which the gas introduced into the reservoir chamber 210 from the gas inlet 201 is sucked into the suction hole 101 so that the reliability of the compressor 10 is higher. The utility model discloses the people's trial and error verifies, and the line D of air inlet 201 and compressor 10 axis forms with the line F of suction opening 101 and compressor 10 axis and the contained angle alpha is greater than 90, and the gas-liquid separation effect that gets into in the reservoir 200 from air inlet 201 when for example 110, 120, 130, 140, 150, 160, 170, 180 is better.

The utility model discloses an embodiment, air inlet 201 sets up in the upper portion of reservoir 200, and air inlet 201 is equipped with intake pipe 230, is equipped with the filter screen in the intake pipe 230.

Alternatively, the outer wall of the inlet pipe is hermetically connected with the inner wall of the gas inlet 201, and the gas inlet pipe 230 is used for introducing gas outside the compressor 10 into the liquid storage chamber 210. Meanwhile, the filter screen can prevent the foreign matters from being carried by the external low-pressure gas and entering the compressor 10 through the gas inlet pipe 230, thereby avoiding the performance of the compressor 10 from being influenced and improving the reliability of the compressor 10.

In an embodiment of the present invention, the outer wall of the compressor main body 100 and/or the inner wall of the liquid reservoir 200 is provided with a heat insulation structure.

It should be noted that the temperature of the gas discharged after being compressed by the compressor main body 100 is high, and the liquid storage device 200 is wrapped on the outer side wall of the compressor main body 100, so that the high-temperature and high-pressure gas discharged after being compressed by the compressor main body 100 can heat the liquid storage device 200 in a heat conduction manner, evaporation of the liquid stored in the liquid storage device 200 can be accelerated, the energy efficiency of the compressor 10 is low, and the liquid storage efficiency is low.

Therefore, the heat insulation structure is added in the embodiment. The heat insulation structure may be a heat insulation coating, or may be a structure such as an embedded heat shield, which is not limited herein.

The heat insulation structure may be coated only on the outer side wall of the compressor body 100, or only on the inner wall surface of the liquid reservoir 200, or simultaneously coated on the outer side wall of the compressor body 100 and the inner wall surface of the liquid reservoir 200, which prevents the liquid stored in the liquid reservoir 200 from being rapidly evaporated, improves the energy efficiency of the compressor 10, and does not affect the liquid storage efficiency of the liquid reservoir 200.

The compressor 10 generally has a base 500, the compressor body 100 is mounted on the base 500, the base 500 is used for supporting and fixing the compressor, meanwhile, the weight of the base 500 is generally large, and the base 500 can also lower the center of gravity of the compressor 10.

It should be noted that the motor 140 can normally operate only by being powered on, and the motor 140 is disposed in the compressor main body 100, so that a power supply inlet is disposed outside the compressor main body 100, the power supply inlet is generally provided with a connection terminal 170, and in order to prevent the condensed water of the liquid reservoir 300 from dripping on the connection terminal 170 and causing a fault, a water blocking cover is further disposed, and the water blocking cover can cover the connection terminal 170. In addition, the water blocking cover may be directly removed from the terminal 170, or may be mounted on the housing of the compressor main body 100 by switching between an open position and a covering position. In this embodiment, the connection terminal 170 is disposed at the upper end of the compressor body 110.

The utility model discloses still provide a refrigeration plant 1, this refrigeration plant 1 includes the compressor 10 as above-mentioned any embodiment. The specific structure of the compressor 10 in this embodiment refers to the above embodiments, and since the structure of the refrigeration device 1 adopts the technical solutions of the above embodiments, the beneficial effects brought by the technical solutions of the above embodiments are at least achieved, and are not repeated here.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (20)

1. A compressor, characterized in that the compressor comprises:

a compressor body having a suction hole;

the liquid storage device wraps the outer side wall of the compressor main body, a liquid storage cavity is formed in the liquid storage device, and the liquid storage cavity is communicated with the suction hole.

2. The compressor of claim 1, wherein the accumulator is disposed around an outer sidewall of the compressor body.

3. The compressor of claim 2, wherein the compressor body includes a first housing, the accumulator includes a second housing, and the second housing forms the reservoir cavity with the first housing.

4. The compressor of claim 3, wherein the upper and lower ends of the second shell are constricted.

5. A compressor in accordance with claim 3, wherein said second shell has a wall thickness of not less than 2mm.

6. The compressor of claim 4, wherein the suction hole opens in an upper half of the first housing.

7. The compressor of claim 6, wherein a height difference between the suction hole and a top of the reservoir chamber is H1, a height of the reservoir chamber is H2, and a value of H1/H2 is greater than 0.1 and less than 0.5.

8. The compressor of claim 6, wherein the compressor body further includes a pump body and a motor, the pump body and the motor both disposed within the first housing, and the pump body is located above the motor.

9. The compressor of claim 8, wherein the pump body has a suction port, the compressor further comprises an adapter tube, one end of the adapter tube is inserted into the suction hole and communicated with the reservoir chamber, and the other end of the adapter tube is inserted into the suction port to communicate the suction port with the reservoir chamber.

10. The compressor of claim 9, wherein the outer wall of the adapter tube is sealingly connected to the inner wall of the suction port, and the outer wall of the adapter tube is sealingly connected to the inner wall of the suction hole.

11. The compressor of claim 9, wherein a sealing gasket is disposed outside the adapter tube, a portion of the sealing gasket is disposed between an outer wall of the adapter tube and an inner wall of the suction port, and another portion of the sealing gasket is disposed between an outer wall of the adapter tube and an inner wall of the suction port.

12. The compressor of claim 9, wherein a first sealing ring is disposed between the outer wall of the adapter tube and the inner wall of the suction port, and a second sealing ring is disposed between the outer wall of the adapter tube and the inner wall of the suction port.

13. The compressor of claim 9, wherein an oil return structure is disposed in the liquid storage cavity, a bottom end of the oil return structure is located at a bottom of the liquid storage cavity, and a top end of the oil return structure extends to a nozzle at one end of the adapter tube, the nozzle being far away from the pump body.

14. The compressor of claim 13, wherein said oil return structure is an oil return tube.

15. The compressor of claim 13, wherein the oil return structure is an annular multichannel structure disposed around an outer sidewall of the first shell.

16. The compressor as set forth in claim 8, wherein said compressor body includes a first shell, and further including an oil baffle plate disposed in said first shell, said oil baffle plate forming an oil storage chamber with a bottom of said first shell.

17. The compressor as claimed in claim 1, wherein the accumulator is opened with an air inlet communicated with the accumulator to introduce a refrigerant into the accumulator chamber, and a line connecting the air inlet and the compressor axis forms an included angle with a line connecting the suction hole and the compressor axis, the included angle being greater than 90 °.

18. The compressor of claim 17, wherein the air inlet is opened at an upper portion of the accumulator, the air inlet is provided with an air inlet pipe, and a filter screen is arranged in the air inlet pipe.

19. A compressor as claimed in claim 1, wherein the outer wall of the compressor body and/or the inner wall of said accumulator is provided with thermal insulation.

20. A refrigeration appliance, characterized in that it comprises a compressor as claimed in any one of claims 1 to 19.

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