Air conditioner and compressor thereof

Abstract

The utility model provides a kind of air conditioner and its compressor, the compressor includes: shell, upper cylinder cover, crankshaft, oil baffle shell and flow guide structure, the bottom of shell is stored with lubricating oil;Upper cylinder cover is set in shell, and it is provided with perforation on upper cylinder cover;Crankshaft is upward and is out of perforation;Oil baffle shell defines open downward oil return chamber, and is sleeved on the upper end of upper cylinder cover;Crankshaft is upward and is out of oil baffle shell;The upper end of flow guide structure is communicated with oil return chamber, and is configured to guide lubricating oil in oil return chamber downward.The utility model's compressor is lower in oil output rate.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioners, and in particular to an air conditioner and its compressor. Background Technology

[0002] Air conditioners have become indispensable household appliances in people's daily lives. The compressor is a crucial component within an air conditioner, with rotary compressors being the most commonly used type. As users' functional demands for air conditioners increase, the maximum operating frequency of compressors has also gradually increased to achieve higher cooling capacity with a smaller displacement. However, as the compressor speed increases, the oil in its oil sump is discharged along with the refrigerant, increasing the compressor's oil output rate. An excessively high oil output rate can lead to insufficient oil in the compressor, causing crankshaft wear and severely impacting the compressor's lifespan and reliability. Utility Model Content

[0003] In view of the above problems, the present invention is proposed to provide an air conditioner and its compressor that overcome or at least partially solve the above problems.

[0004] One objective of this invention is to solve the problem of high oil output rate in compressors in related technologies, so as to avoid oil shortage in the compressor.

[0005] Specifically, this utility model proposes a compressor for air conditioners.

[0006] This utility model proposes an air conditioner.

[0007] The compressor for air conditioners of this utility model includes:

[0008] A housing, the bottom of which stores lubricating oil;

[0009] Upper cylinder head, wherein the upper cylinder head is disposed within the housing, and the upper cylinder head is provided with perforations;

[0010] A crankshaft extends upward through the perforation;

[0011] An oil baffle, which defines a downward-facing oil return chamber, is fitted onto the upper end of the upper cylinder head; the crankshaft extends upward through the oil baffle.

[0012] A flow guiding structure, the upper end of which is connected to the oil return chamber, is configured to guide the lubricating oil in the oil return chamber downward.

[0013] In some embodiments, the upper cylinder head is provided with a through-hole for oil return;

[0014] The flow guiding structure is a flow guiding groove provided on the upper cylinder head; one end of the flow guiding groove extends into the oil return chamber, and the other end extends to the upper opening of the oil return through hole.

[0015] In some embodiments, the upper cylinder head has a cover portion, the upper surface of which is provided with an upwardly protruding protrusion; the perforation penetrates the cover portion and the protrusion; the lower part of the oil baffle is connected to the protrusion;

[0016] The guide groove includes a first section and a second section; the first section is disposed on the protrusion and extends in the vertical direction; one end of the second section is connected to the first section, and the other end extends to the upper opening of the oil return through hole.

[0017] In some embodiments, the second segment is set horizontally;

[0018] The depth of the second section gradually increases in the direction of the return oil through hole.

[0019] In some embodiments, the flow guiding structure is a flow guiding pipe, one end of which is connected to the oil return chamber; the other end of which passes through the upper cylinder head.

[0020] In some embodiments, the lower part of the oil baffle and / or the upper cylinder head are provided with a groove to form an opening between the lower part of the oil baffle and the upper cylinder head, and one end of the guide tube is inserted into the opening.

[0021] In some embodiments, the guide tube body is made of a rigid material;

[0022] The guide tube is in the shape of an upwardly curved arc; or,

[0023] The guide tube includes a third section and a fourth section; the third section is connected to the oil return chamber and is horizontally arranged; the fourth section is vertically arranged, with one end connected to the fourth section and the other end passing through the upper cylinder head.

[0024] In some embodiments, the crankshaft is further provided with a liquid outlet channel;

[0025] The outlet end of the liquid outlet channel is located in the oil return chamber.

[0026] In some embodiments, the oil baffle includes:

[0027] An oil baffle plate body is provided with a through hole for the crankshaft to pass through, and the through hole is in contact with the upper end;

[0028] An oil baffle cylinder body, the upper end of which is connected to the oil baffle plate body; the upper end of the oil baffle cylinder body contacts and abuts against the upper cylinder head.

[0029] The air conditioner of this utility model includes the compressor described in any of the above-mentioned claims.

[0030] The compressor for an air conditioner according to this embodiment includes a housing, an upper cylinder head, a crankshaft, an oil baffle, and a flow guide structure. The oil baffle is fitted onto the upper end of the upper cylinder head, and the crankshaft extends upward through the oil baffle. Specifically, the oil baffle covers the gap between the upper end of the crankshaft and the upper end of the perforation, causing lubricating oil ejected from the gap to be blocked and retained in the oil return chamber. At least a portion of the lubricating oil in the oil return chamber can flow downwards through the flow guide structure (when some lubricating oil does not flow out through the flow guide structure, this portion will also flow downwards through the opening of the oil baffle), allowing the lubricating oil to flow smoothly to the bottom of the housing. This prevents lubricating oil from being discharged with the refrigerant, thereby reducing the compressor's oil output rate and ensuring sufficient lubricating oil within the compressor. This prevents crankshaft wear and extends the compressor's service life.

[0031] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0032] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0033] Figure 1 This is a schematic structural diagram of the compressor according to an embodiment of the present utility model;

[0034] Figure 2 This is a top view schematic structural diagram of the compressor according to an embodiment of the present utility model;

[0035] Figure 3 This is a schematic structural diagram of the oil-blocking enclosure according to an embodiment of the present utility model;

[0036] Figure 4 This is a top view schematic structural diagram of the oil-blocking enclosure according to an embodiment of the present utility model;

[0037] Figure 5 This is a schematic structural diagram of the compressor according to an embodiment of the present utility model;

[0038] Figure 6 yes Figure 5A magnified schematic diagram of the structure at point A in the middle;

[0039] Figure 7 This is a schematic structural diagram of the compressor according to an embodiment of the present utility model;

[0040] Figure 8 This is a schematic structural diagram of an air conditioner according to an embodiment of the present utility model.

[0041] Figure label:

[0042] Compressor 10;

[0043] Casing 100;

[0044] Upper cylinder head 200; perforation 201; oil return hole 210; guide groove 220; first section 221; second section 222; cover 230; protrusion 240; groove 250;

[0045] Crankshaft 300; Liquid outlet channel 310; Outlet end 320;

[0046] Oil baffle shell 400; oil return chamber 401; oil baffle plate body 410; through hole 411; oil baffle cylinder body 420;

[0047] The guide tube body is 500; the third section is 510; the fourth section is 520;

[0048] Air conditioner 20. Detailed Implementation

[0049] The following reference Figures 1 to 8 This invention describes an air conditioner and its compressor according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0050] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The compressor 10 for an air conditioner 20 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0054] The compressor 10 for an air conditioner 20 according to this embodiment of the present invention includes a housing 100, an upper cylinder head 200, a crankshaft 300, an oil baffle 400, and a flow guiding structure.

[0055] The bottom of the housing 100 stores lubricating oil. The upper cylinder head 200 is disposed inside the housing 100 and is fixedly connected to the housing 100. A through-hole 201 is provided on the upper cylinder head 200. The crankshaft 300 extends upward through the through-hole 201, allowing the crankshaft 300 to be rotatably connected to the upper cylinder head 200. Lubricating oil is present in the fit clearance between the crankshaft 300 and the through-hole 201, and the lubricating oil can flow upward along the fit clearance and be sprayed upward from the gap between the upper end of the crankshaft 300 and the through-hole 201.

[0056] An oil baffle 400 defines a downward-opening oil return chamber 401, and the oil baffle 400 is fitted onto the upper end of the upper cylinder head 200. The crankshaft 300 extends upward through the oil baffle 400. That is, the oil baffle 400 covers the gap between the crankshaft 300 and the upper end of the perforation 201. When lubricating oil is sprayed upward from the gap between the crankshaft 300 and the upper end of the perforation 201, the lubricating oil is blocked and retained in the oil return chamber 401 by the oil baffle 400.

[0057] The upper end of the flow guiding structure is connected to the oil return chamber 401, and the flow guiding structure is configured to guide the lubricating oil in the oil return chamber 401 downward. At least a portion of the lubricating oil in the oil return chamber 401 can flow into the flow guiding structure and flow downward under the guidance of the flow guiding structure.

[0058] A compressor in the related technology includes a housing, an upper cylinder head, and a crankshaft, with the upper cylinder head fixedly connected inside the housing. The upper cylinder head has a through-hole. The crankshaft passes through the through-hole upwards, allowing it to be rotatably connected to the upper cylinder head. Lubricating oil is present in the clearance between the crankshaft and the through-hole. The lubricating oil flows upwards along the clearance and is sprayed upwards from the gap between the upper end of the crankshaft and the through-hole. The sprayed oil is discharged along with the refrigerant, increasing the compressor's oil output and potentially leading to insufficient lubrication within the compressor.

[0059] Compared with related technologies, the compressor 10 for an air conditioner 20 according to this invention includes a housing 100, an upper cylinder head 200, a crankshaft 300, an oil baffle 400, and a flow guiding structure. The oil baffle 400 is fitted onto the upper end of the upper cylinder head 200, and the crankshaft 300 extends upward through the oil baffle 400, that is, the oil baffle 400 covers the gap between the crankshaft 300 and the upper end of the perforation 201, so that the lubricating oil sprayed from the gap between the crankshaft 300 and the upper end of the perforation 201 is blocked and retained in the oil return chamber 401 by the oil baffle 400. At least a portion of the lubricating oil in the oil return chamber 401 can flow downward through the guidance of the flow guiding structure (when a portion of the lubricating oil does not flow out through the flow guiding structure, that portion of the lubricating oil will also flow downward through the opening of the oil baffle 400), allowing the lubricating oil to flow smoothly to the bottom of the housing 100. This prevents lubricating oil from being discharged along with the refrigerant, thereby reducing the oil output rate of the compressor 10. This ensures that the compressor 10 has sufficient lubricating oil, thus preventing wear on the crankshaft 300 of the compressor 10 and extending the service life of the compressor 10.

[0060] In some embodiments, such as Figure 1 and Figure 2As shown, the upper cylinder head 200 is provided with a through-hole 210. The flow guiding structure is a flow guiding groove 220 provided on the upper cylinder head 200. One end of the flow guiding groove 220 extends into the oil return chamber 401, and the other end of the flow guiding groove 220 extends to the upper opening of the oil return through-hole 210, that is, the other end of the flow guiding groove 220 penetrates the upper wall of the oil return through-hole 210.

[0061] Specifically, one end of the guide groove 220 is located inside the oil return chamber 401. The guide groove 220 is open to the outside so that the lubricating oil in the oil return chamber 401 flows into the one end of the guide groove 220. The lubricating oil flows along the guide groove 220 to the other end of the guide groove 220, so that the lubricating oil flows into the oil return through hole 210 and finally drips to the bottom of the housing 100.

[0062] In some embodiments, such as Figure 1 and Figure 2 As shown, the upper cylinder head 200 has a cover portion 230, and the upper surface of the cover portion 230 is provided with an upwardly protruding protrusion 240. A through hole 201 penetrates the cover portion 230 and the protrusion 240, and the lower part of the oil baffle 400 is connected to the protrusion 240. The guide groove 220 includes a first section 221 and a second section 222. The first section 221 is provided on the protrusion 240 and extends in the vertical direction; one end of the second section 222 is connected to the first section 221, and the other end extends to the upper opening of the oil return through hole 210.

[0063] In other words, the first section 221 of the guide channel 220 is set along the extension direction of the protrusion 240, that is, it extends in the vertical direction, so that the lubricating oil flowing into the first section 221 can flow smoothly downward under the influence of gravity, so that the lubricating oil can flow more smoothly through the first section 221 and the second section 222 in sequence, so that the lubricating oil can return in time.

[0064] Furthermore, such as Figure 1 As shown, the second segment 222 is horizontally positioned. The groove depth of the second segment 222 gradually increases towards the oil return hole 210. Specifically, the second segment 222 extends from the center of the cover 230 towards the outer edge, and the groove depth of the second segment 222 gradually increases as it extends from the center of the cover 230 towards the outer edge. The end of the second segment 222 furthest from the cover 230 penetrates the inner wall of the oil return hole 210. This allows the lubricating oil to flow more easily towards the oil return hole 210 in the second segment 222, enabling timely return of the lubricating oil.

[0065] In some embodiments, such as Figures 5-7As shown, the flow guiding structure is a flow guiding pipe body 500. One end of the flow guiding pipe body 500 is connected to the oil return chamber 401, and the other end of the flow guiding pipe body 500 passes through the upper cylinder head 200. That is to say, the lubricating oil in the oil return chamber 401 is directly guided to the bottom of the upper cylinder head 200 through the flow guiding pipe body 500, avoiding contact between the lubricating oil and the refrigerant during the flow process, and preventing the lubricating oil from being partially dissolved by the refrigerant.

[0066] In some alternative embodiments, the other end of the guide tube 500 extends into the return oil through hole 210.

[0067] In some alternative embodiments, the other end of the guide tube 500 passes through the return oil through hole 210 and extends below the return oil through hole 210.

[0068] In some alternative embodiments, the other end of the guide tube 500 is located above the return oil through hole 210, and the other end of the guide tube 500 is spaced 1 mm to 3 mm from the return oil through hole 210. The distance between the other end of the guide tube 500 and the return oil through hole 210 is 1 mm, 2 mm or 3 mm.

[0069] In some embodiments, the lower part of the oil baffle 400 contacts and abuts against the protrusion 240 so that the oil return chamber 401 is a closed chamber, thereby allowing the lubricating oil in the oil return chamber 401 to flow directly back to the lower part of the upper cylinder head 200 through the guide structure.

[0070] In some embodiments, such as Figure 6 As shown, a groove 250 is provided on the lower part of the oil baffle 400 and / or the upper cylinder head 200. This creates an opening between the lower part of the oil baffle 400 and the upper cylinder head 200, into which one end of the guide pipe 500 is inserted. The opening faces downwards and is located at the lowest end of the oil return chamber 401, allowing all the lubricating oil in the oil return chamber 401 to be discharged in a timely manner.

[0071] In other words, the lower part of the oil baffle 400 is provided with a groove 250, so that the groove 250 of the lower part of the oil baffle 400 defines an opening between the outer peripheral wall of the protrusion 240; or, the protrusion 240 of the upper cylinder head 200 is provided with a groove 250, so that the groove 250 of the protrusion 240 defines an opening between the inner wall of the oil baffle 400; or, both the lower part of the oil baffle 400 and the protrusion 240 of the upper cylinder head 200 are provided with grooves 250, so that the oil baffle 400 and the protrusion 240 of the upper cylinder head 200 together define an opening.

[0072] Furthermore, the guide tube body 500 is made of a rigid material. The guide tube body 500 is in the shape of an upwardly curved arc. Alternatively, the guide tube body 500 includes a third section 510 and a fourth section 520. The third section 510 is connected to the oil return chamber 401 and is horizontally arranged. The fourth section 520 is vertically arranged, with one end connected to the other end and passing through the upper cylinder head 200. Because the guide tube body 500 is made of a rigid material, it can maintain its own shape (e.g., a zigzag or arc shape) so that it can avoid other components (e.g., a muffler), preventing it from interfering with the installation of other components and improving practicality.

[0073] Optionally, the flow guide body 500 is made of metal, for example, an iron tube or a copper tube.

[0074] Optionally, the flow guide body 500 is made of rigid plastic, for example, a tube made of polyvinyl chloride or polycarbonate.

[0075] In some embodiments, such as Figures 1-7 As shown, the crankshaft 300 is also provided with a liquid outlet channel 310, which extends vertically and has its lower end located on the bottom surface of the crankshaft 300, so that the lubricating oil at the bottom of the housing 100 enters the liquid outlet channel 310 from its lower end. The outlet end 320 of the liquid outlet channel 310 is located in the oil return chamber 401, so that the lubricating oil flowing out of the outlet end 320 of the liquid outlet channel 310 is also blocked and retained in the oil return chamber 401 by the oil baffle 400.

[0076] In some embodiments, such as Figure 3 and Figure 4 As shown, the oil baffle 400 includes an oil baffle plate 410 and an oil baffle cylinder 420. The oil baffle plate 410 has a through hole 411 through which the crankshaft 300 passes, and the through hole 411 contacts the upper end. The upper end of the oil baffle cylinder 420 is connected to the oil baffle plate 410, and the upper end of the oil baffle cylinder 420 contacts and abuts against the upper cylinder head 200. This not only allows the oil baffle 400 to block lubricating oil flowing out of the outlet end 320 of the liquid outlet channel 310 and the gap between the crankshaft 300 and the upper end of the through hole 201, but also provides a simple structure.

[0077] The air conditioner 20 of this utility model is described below with reference to the accompanying drawings.

[0078] The air conditioner 20 of this utility model embodiment includes the compressor 10 of any of the above embodiments.

[0079] The air conditioner 20 of this utility model embodiment includes a compressor 10 comprising a housing 100, an upper cylinder head 200, a crankshaft 300, an oil baffle 400, and a flow guiding structure. The oil baffle 400 is fitted onto the upper end of the upper cylinder head 200, and the crankshaft 300 extends upward through the oil baffle 400. Specifically, the oil baffle 400 covers the gap between the crankshaft 300 and the upper end of the perforation 201, causing the lubricating oil ejected from the gap between the crankshaft 300 and the upper end of the perforation 201 to be blocked and retained in the oil return chamber 401. The lubricating oil in the oil return chamber 401 can flow downwards under the guidance of the flow guiding structure, allowing it to flow smoothly to the bottom of the housing 100. This prevents the lubricating oil from being discharged with the refrigerant, thereby reducing the oil output rate of the compressor 10, ensuring sufficient lubricating oil within the compressor 10, and thus preventing wear on the crankshaft 300 of the compressor 10, extending the service life of the compressor 10.

[0080] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A compressor for an air conditioner, characterized by, Also includes: A housing, the bottom of which stores lubricating oil; Upper cylinder head, wherein the upper cylinder head is disposed within the housing, and the upper cylinder head is provided with perforations; The crankshaft extends upward through the perforation; An oil baffle, which defines a downward-facing oil return chamber, is fitted onto the upper end of the upper cylinder head; The crankshaft extends upward through the oil-bearing housing; A flow guiding structure, the upper end of which is connected to the oil return chamber, is configured to guide the lubricating oil in the oil return chamber downward.

2. The compressor according to claim 1, characterized in that, The upper cylinder head is provided with a through-hole for oil return; The flow guiding structure is a flow guiding groove provided on the upper cylinder head; one end of the flow guiding groove extends into the oil return chamber, and the other end extends to the upper opening of the oil return through hole.

3. The compressor according to claim 2, characterized in that, The upper cylinder head has a cover portion, and the upper surface of the cover portion is provided with an upwardly protruding protrusion; the perforation penetrates the cover portion and the protrusion; the lower part of the oil baffle is connected to the protrusion; The flow guide channel includes a first section and a second section; The first segment is disposed on the protrusion and extends in the vertical direction; one end of the second segment is connected to the first segment, and the other end extends to the upper opening of the oil return through hole.

4. The compressor according to claim 3, characterized in that, The second segment is set horizontally; The depth of the second section gradually increases in the direction of the return oil through hole.

5. The compressor according to claim 1, characterized in that, The flow guiding structure is a flow guiding pipe body, one end of which is connected to the oil return chamber; the other end of which passes through the upper cylinder head.

6. The compressor according to claim 5, characterized in that, The lower part of the oil baffle and / or the upper cylinder head are provided with grooves so that an opening is formed between the lower part of the oil baffle and the upper cylinder head, and one end of the guide tube is inserted into the opening.

7. The compressor according to claim 5, characterized in that, The guide tube is made of a rigid material. The guide tube is in the shape of an upwardly curved arc; or, The guide tube includes a third section and a fourth section; the third section is connected to the oil return chamber and is horizontally arranged; the fourth section is vertically arranged, with one end connected to the fourth section and the other end passing through the upper cylinder head.

8. The compressor according to claim 1, characterized in that, The crankshaft is also provided with a liquid outlet channel; The outlet end of the liquid outlet channel is located in the oil return chamber.

9. The compressor according to claim 1, characterized in that, The oil-bearing enclosure includes: An oil baffle plate body is provided with a through hole for the crankshaft to pass through, and the through hole is in contact with the upper end; An oil baffle cylinder body, the upper end of which is connected to the oil baffle plate body; the upper end of the oil baffle cylinder body contacts and abuts against the upper cylinder head.

10. An air conditioner characterized by comprising: The compressor includes any one of claims 1-9.

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