Pump body assembly, compressor and air conditioner

Abstract

The invention provides a pump body assembly, a compressor and an air conditioner. The pump body assembly includes: an intermediate plate; a containing hole, an air supplementing hole and a communicating hole are formed in the middle plate, the containing hole and the air supplementing hole are sequentially formed in the radial direction of the middle plate, the first end of the containing hole communicates with the air supplementing hole, and the air supplementing hole penetrates through the outer side wall of the middle plate; the first end of the communicating hole communicates with the upper compression cavity of the upper cylinder and / or the lower compression cavity of the lower cylinder, the second end of the communicating hole communicates with the second end of the containing hole, and the third end of the communicating hole communicates with the third end of the containing hole. The sliding block structure is arranged in the accommodating hole; during air supplementing, the sliding block structure moves towards the second end close to the containing hole, and the air supplementing hole communicates with the upper compression cavity and / or the lower compression cavity through the third end of the communicating hole; when air supply is stopped, the sliding block structure moves towards the first end close to the containing hole, and the sliding block structure blocks the first end and / or the third end of the containing hole. The problem of refrigerant backflow of the compressor can be solved, and the performance of the compressor is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressor, in particular to a pump body assembly, a compressor and an air conditioner. BACKGROUND

[0002] In order to improve the heating or refrigeration capacity of a double-cylinder or multi-cylinder compressor, a supplementary gas passage is usually formed on an intermediate plate between two cylinders of the compressor, the supplementary gas passage is communicated with a cylinder cavity of the compressor, and a supplementary gas pipe is connected to the supplementary gas passage from outside of a compressor shell to supply gas to the cylinder compression cavity. However, in the prior art, the compressor may have a compressed refrigerant backflow phenomenon during the gas supplement process, and the backflow of the refrigerant may reduce the performance of the compressor. SUMMARY

[0003] In view of the problems in the prior art, the present application aims to provide a pump body assembly, a compressor and an air conditioner, which can improve the compressed refrigerant backflow problem during the gas supplement process of the compressor and improve the performance of the compressor.

[0004] The present application provides a pump body assembly, comprising: an upper cylinder, a lower cylinder and an intermediate plate between the upper cylinder and the lower cylinder; the intermediate plate is provided with a receiving hole, a supplementary gas hole and a communication hole, the receiving hole and the supplementary gas hole are sequentially arranged along a radial direction of the intermediate plate, and a first end of the receiving hole is communicated with the supplementary gas hole, and the supplementary gas hole penetrates an outer side wall of the intermediate plate; a first end of the communication hole is communicated with an upper compression cavity of the upper cylinder and / or a lower compression cavity of the lower cylinder, a second end of the communication hole is communicated with a second end of the receiving hole, and a third end of the communication hole is communicated with a third end of the receiving hole; a sliding block structure arranged in the receiving hole; when the gas pressure in the supplementary gas hole is greater than the gas pressure in the upper compression cavity and / or the lower compression cavity, the sliding block structure moves towards the second end of the receiving hole, and the supplementary gas hole is communicated with the upper compression cavity and / or the lower compression cavity through the third end of the communication hole; when the gas pressure in the upper compression cavity and / or the lower compression cavity is greater than the gas pressure in the supplementary gas hole, the sliding block structure moves towards the first end of the receiving hole, and the sliding block structure blocks the first end and / or the third end of the receiving hole.

[0005] In some embodiments, the communication hole comprises a first communication hole, a second communication hole and a third communication hole arranged in sequence along the radial direction of the intermediate plate, the first end of the first communication hole penetrates at least one end surface of the intermediate plate and communicates with the upper compression cavity and / or the lower compression cavity; the second end of the first communication hole communicates with the first end of the second communication hole, the second end of the second communication hole communicates with the second end of the containing hole, the second end of the second communication hole communicates with the first end of the third communication hole, and the second end of the third communication hole communicates with the third end of the containing hole.

[0006] In some embodiments, the vertical projection of the first communication hole on the end surface of the upper cylinder and / or the lower cylinder at least partially falls within the range of the upper compression cavity of the upper cylinder and / or the lower compression cavity of the lower cylinder; the vertical projection of the third communication hole on the end surface of the upper cylinder and / or the lower cylinder falls within the range of the upper cylinder end wall of the upper cylinder and / or the cylinder end wall of the lower cylinder.

[0007] In some embodiments, the first communication hole is a first vertical hole arranged along the axial extension of the intermediate plate; the second communication hole is a first horizontal hole arranged along the radial extension of the intermediate plate; and the third communication hole comprises a second vertical hole, a second horizontal hole and a third vertical hole, the second vertical hole is arranged along the axial extension of the intermediate plate, the second horizontal hole is arranged along the radial extension of the intermediate plate, and the third vertical hole is arranged along the axial extension of the intermediate plate.

[0008] In some embodiments, the air supplement hole, the containing hole and the first horizontal hole are coaxially arranged.

[0009] In some embodiments, the sliding block structure comprises a stopper, and the stopper is in the shape of a column.

[0010] In some embodiments, the sliding block structure further comprises a spring connected to the stopper, and the spring is arranged at the first end of the containing hole.

[0011] In some embodiments, when the height of the stopper corresponding to the cross-sectional size of the first end of the containing hole is not less than the axial cross-sectional size of the first end of the containing hole, the stopper can block the opening aperture of the first end of the containing hole; When the height of the stopper is not less than the inner diameter of the containing hole, and the cross-sectional size of the stopper corresponding to the third end of the containing hole is not less than the axial cross-sectional size of the third end of the containing hole, the stopper can block the third end of the containing hole.

[0012] The embodiments of the present application also provide a compressor, comprising: a housing, the side wall of which is provided with an air inlet; The pump body assembly as described above is arranged in the interior of the shell; The liquid reservoir comprises a gas supplement pipe which extends into the interior of the shell through the gas inlet and is connected with the pump body assembly through the gas supplement hole.

[0013] The embodiment of the present application further provides an air conditioner comprising the compressor.

[0014] The pump body assembly, the compressor and the air conditioner provided by the present application have the following advantages: By arranging the accommodating hole, the gas supplement hole and the communication hole, the two ends of the slider structure are respectively communicated with the compression cavity of the cylinder and the gas supplement hole, when there is a pressure difference between the compression cavity and the gas supplement hole, the slider structure can move towards the second end or the first end of the accommodating hole to perform gas supplement or stop gas supplement, and the problem of refrigerant backflow when stopping gas supplement is avoided, and the performance of the compressor is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings.

[0016] Figure 1 is a sectional view of a compressor in the prior art; Figure 2 is a sectional view of a pump body assembly provided by an embodiment of the present application; Figure 3 is a structural view of the intermediate plate connecting the gas supplement pipe provided by an embodiment of the present application; Figure 4 is a partial sectional view of the intermediate plate provided by an embodiment of the present application; Figure 5 is a view of the slider structure provided by an embodiment of the present application; Figure 6 is a sectional view of the slider structure provided by an embodiment of the present application, which blocks the first end of the accommodating hole; Figure 7 is a sectional view of the slider structure provided by an embodiment of the present application, which blocks the third end of the accommodating hole.

[0017] Reference signs: DETAILED DESCRIPTION

[0018] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0019] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] It should be further understood that the terms "comprising" or "including" indicate the presence of a feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" as used herein are interpreted as inclusive, or mean any one or any combination thereof. Therefore, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C." Exceptions to this definition only arise when a combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0021] Figure 1 A cross-sectional schematic diagram of a compressor in the prior art is shown. For example... Figure 1As shown, the compressor in the prior art includes an upper cylinder 10', a lower cylinder 20', and an intermediate plate 30' located between the upper cylinder 10' and the lower cylinder 20'. The intermediate plate 30' has a gas supply channel 30a' and a gas supply hole 30b' connecting to the gas supply channel 30a'. The gas supply channel 30a' connects to a gas supply pipe 50', and a slider compression spring is also provided inside the gas supply channel 30a'. The slider compression spring includes a slider 40a' and a spring 40b' connected to the slider 40a'. The gas supply hole 30b' communicates with the cavities of the upper and lower cylinders. During gas supply, the gas pressure in the gas supply pipe 50' pushes the slider 40a' to move closer to the spring 40b', moving the slider 40a' to the tail end of the gas supply channel 30a'. At this time, the gas supply pipe 50' communicates with the gas supply hole 30b', thereby supplying gas to the compression cavities of the upper and lower cylinders. However, when the gas pressure in the compression chamber of the upper and lower cylinders is greater than the replenishment pressure, since there is no pressure difference between the front and back of the slider 40a' at this time, the compressed gas with higher pressure will continue to act on the slider 40a', causing the slider 40a' to continue to move towards the spring 40b' and compress the spring 40b'. This makes it impossible for the slider 40a' to close the replenishment port 30b' and cut off the connection between the compression chamber and the replenishment pipe 50', thus causing the compressed refrigerant to flow back into the replenishment pipe 50'.

[0022] To address the problems in the prior art, embodiments of the present invention provide a pump body assembly. Figure 2 A cross-sectional schematic diagram of a pump body assembly according to an embodiment of the present invention is shown; Figure 3 This diagram illustrates a structural schematic of an intermediate plate connected to an air supply pipe according to an embodiment of the present invention. Figure 4 A partial cross-sectional schematic diagram of an intermediate plate provided in an embodiment of the present invention is shown; as follows: Figures 2 to 4 As shown, the pump assembly provided in this embodiment of the invention includes an upper cylinder 10, a lower cylinder 20, an intermediate plate 30 located between the upper cylinder 10 and the lower cylinder 20, and a slider structure 40.

[0023] Specifically, the intermediate plate 30 is provided with a receiving hole 31, an air supply hole 32, and a connecting hole 33. The receiving hole 31 and the air supply hole 32 are arranged sequentially along the radial direction of the intermediate plate 30, and the first end of the receiving hole 31 is connected to the air supply hole 32, which penetrates the outer side wall of the intermediate plate 30. The first end of the connecting hole 33 is connected to the upper compression chamber of the upper cylinder 10 and / or the lower compression chamber of the lower cylinder 20. The second end of the connecting hole 33 is connected to the second end of the receiving hole 31, and the third end of the connecting hole 33 is connected to the third end of the receiving hole 31.

[0024] The slider structure 40 is located inside the receiving hole 31.

[0025] When the gas pressure in the air inlet 32 ​​is greater than the gas pressure in the upper compression chamber and / or the lower compression chamber, the slider structure 40 moves towards the second end closer to the receiving hole 31, and the air inlet 32 ​​connects to the upper compression chamber and / or the lower compression chamber through the third end of the connecting hole 33. In other words, air can be supplied to the cylinder at this time.

[0026] When the gas pressure in the upper and / or lower compression chambers is greater than the gas pressure in the air supply port 32, the slider structure 40 moves towards the first end of the receiving port 31. The slider structure 40 blocks the first end of the receiving port 31, or blocks the third end of the receiving port 31, or blocks both the first and third ends of the receiving port 31 simultaneously, thereby cutting off the gas flow path between the upper and / or lower compression chambers and the air supply port 32. In other words, air supply to the cylinder stops at this time.

[0027] It should be noted that in this embodiment, the connecting hole 33 connects the upper compression chamber of the upper cylinder 10 and the lower compression chamber of the lower cylinder 20. However, in other embodiments, the connecting hole 33 may connect only one of the compression chambers. Those skilled in the art can set it according to actual needs.

[0028] This application provides a receiving hole 31, an air supply hole 32, and a connecting hole 33, so that both ends of the slider structure 40 are connected to the compression chamber of the cylinder and the air supply hole, respectively. When there is a pressure difference between the compression chamber and the air supply hole 32, the slider structure 40 can move towards the first or second end of the receiving hole 31 to supply air or stop supplying air; and there will be no problem of refrigerant backflow when air supply stops, thus improving the performance of the compressor.

[0029] For further information, please refer to [link / reference]. Figures 2 to 4 The connecting hole 33 includes a first connecting hole 331, a second connecting hole 332, and a third connecting hole 333 sequentially arranged along the radial direction of the intermediate plate 30. The first end of the first connecting hole 331 penetrates at least one end face of the intermediate plate 30 and communicates with the upper compression chamber and / or the lower compression chamber. The second end of the first connecting hole 331 communicates with the first end of the second connecting hole 332, the second end of the second connecting hole 332 communicates with the second end of the receiving hole 31, the second end of the second connecting hole 332 communicates with the first end of the third connecting hole 333, and the second end of the third connecting hole 333 communicates with the third end of the receiving hole 31. It should be noted that the first connecting hole 331 specifically communicates with either the upper or lower compression chamber, penetrating one or both end faces of the intermediate plate 30. In this embodiment, the first connecting hole 331 penetrates both end faces of the intermediate plate 30 to achieve communication with both the upper and lower compression chambers.

[0030] For further information, please refer to [link / reference]. Figures 2 to 4In this embodiment, the vertical projection of the first connecting hole 331 onto the end face of the upper cylinder 10 and / or the lower cylinder 20 at least partially falls within the range of the upper compression chamber of the upper cylinder 10 and the lower compression chamber of the lower cylinder 20, so as to realize that the first connecting hole 331 is connected to the upper compression chamber and the lower compression chamber. The vertical projection of the third connecting hole 333 onto the end face of the upper cylinder 10 and / or the lower cylinder 20 falls within the range of the upper cylinder end wall of the upper cylinder 10 and / or the lower cylinder end wall of the lower cylinder, so as to realize that the third connecting hole 333 is not directly connected to the upper compression chamber and the lower compression chamber.

[0031] Furthermore, such as Figures 2 to 4 As shown, the first connecting hole 331 is a first vertical hole, extending axially along the intermediate plate 30; the second connecting hole 332 is a first horizontal hole, extending radially along the intermediate plate 30; the third connecting hole 333 includes a second vertical hole 3331, a second horizontal hole 3332, and a third vertical hole 3333. The second vertical hole 3331 extends axially along the intermediate plate 30, the second horizontal hole 3332 extends radially along the intermediate plate 30, and the third vertical hole extends axially along the intermediate plate 30. Designating the first connecting hole 331 as a vertical hole, the second connecting hole 332 as a horizontal hole, and the third connecting hole 333 as two vertical holes and one horizontal hole facilitates the machining of the connecting holes 33.

[0032] Furthermore, such as Figures 2 to 4 As shown, the air inlet 32, the receiving hole 31, and the first horizontal hole are arranged coaxially. This arrangement of three holes reduces the difficulty of manufacturing the air inlet 32, the receiving hole 31, and the first horizontal hole, and also reduces airflow resistance.

[0033] Figure 5 A schematic diagram of a slider structure provided in an embodiment of the present invention is shown. Figure 5 As shown, the slider structure 40 includes a stop 41, which is cylindrical in shape. The cylindrical stop 41 is adapted to the shape of the receiving hole 31, which can reduce local wear between the stop 41 and the inner wall of the receiving hole 31 when the stop 41 moves, and extend the service life of the stop 41.

[0034] Furthermore, such as Figure 5 As shown, the slider structure 40 also includes a spring 42 connected to the stop 41, and the spring 42 is located at the first end of the receiving hole 31. The spring 42 can limit the maximum distance the stop 41 moves, and provide a restoring force for the stop 41 to quickly return to its original position.

[0035] Figure 6 A schematic cross-sectional view of a slider structure provided in an embodiment of the present invention, showing the first end of a receiving hole being blocked. Further, as... Figure 4 and Figure 6As shown, when the stop block 41 needs to effectively block the first end of the receiving hole 31, the cross-sectional dimension S1′ of the stop block 41 corresponding to the first end of the receiving hole 31 is not less than the axial cross-sectional dimension S1 of the first end of the receiving hole 31. Figure 7 A schematic cross-sectional view of a slider structure provided in an embodiment of the present invention is shown, in which the first end of the receiving hole is blocked. Figure 4 and Figure 7 As shown, when the stop block 41 needs to effectively block the third end of the receiving hole 31, the height h of the stop block 41 is not less than the inner diameter d of the first end of the receiving hole 31, and the cross-sectional dimension S2′ of the third end of the receiving hole 31 is not less than the axial cross-sectional dimension S2 of the third end of the receiving hole 31. It should be noted that the cross-sectional shape of the receiving hole 31 is not limited to the circle here, but can also be square, rectangular, etc. Those skilled in the art can set it according to actual needs, and no specific limitation is made here.

[0036] This configuration ensures that the two ends of the baffle 41 are always connected to the compression chamber and the air supply port 32, respectively. When a pressure difference exists between the compression chamber and the air supply port 32, the baffle 41 can easily move along the receiving hole 31 under the influence of the pressure difference. When the pressure in the air supply port 32 is greater than the pressure in the compression chamber, the baffle 41 moves towards the second end of the receiving hole 31, opening the gas passage between the air supply port 32 and the compression chamber to achieve air supply. When the pressure in the compression chamber is greater than the pressure in the air supply port 32, the baffle 41 moves towards the first end of the receiving hole 31, selectively satisfying the cross-sectional size matching condition of the first or third end, thereby blocking the first and / or third ends of the receiving hole 31, cutting off the gas flow path between the compression chamber and the air supply port 32, achieving switching between air supply and stopping air supply, preventing refrigerant backflow, and improving compressor performance.

[0037] This invention also provides a compressor. (See reference...) Figure 2 and Figure 3 The compressor includes: The housing 100 has an air inlet on its side wall; The pump body assembly described above is located inside the housing 100; The gas-replenishing reservoir includes a gas-replenishing pipe 50, which extends into the interior of the housing 100 through an air inlet and is connected to the pump assembly through a gas-replenishing hole 32.

[0038] The compressor provided by the present invention includes the pump body assembly as described above, and therefore can achieve all the technical effects of the pump body assembly described above, which will not be repeated here.

[0039] Furthermore, embodiments of the present invention also provide an air conditioner, including the compressor described above. The air conditioner provided by the present invention includes the compressor described above, and therefore achieves all the technical effects of the compressor described above, which will not be repeated here.

[0040] In summary, the pump assembly, compressor, and air conditioner provided by this invention have the following advantages: By setting up a receiving hole, an air supply hole, and a connecting hole, the two ends of the slider structure are connected to the compression chamber and the air supply hole of the cylinder, respectively. When there is a pressure difference between the compression chamber and the air supply hole, the slider structure can move towards the second end or the first end of the receiving hole to supply air or stop supplying air. Furthermore, there will be no problem of refrigerant backflow when air supply stops, thus improving the performance of the compressor.

[0041] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A pump body assembly, characterized in that, include: An upper cylinder, a lower cylinder, and an intermediate plate located between the upper cylinder and the lower cylinder; the intermediate plate is provided with a receiving hole, an air supply hole, and a connecting hole, the receiving hole and the air supply hole being arranged sequentially along the radial direction of the intermediate plate, and the first end of the receiving hole communicating with the air supply hole, the air supply hole penetrating the outer side wall of the intermediate plate; the first end of the connecting hole communicating with the upper compression chamber of the upper cylinder and / or the lower compression chamber of the lower cylinder, the second end of the connecting hole communicating with the second end of the receiving hole, and the third end of the connecting hole communicating with the third end of the receiving hole; A slider structure is provided within the receiving hole; When the gas pressure in the air inlet is greater than the gas pressure in the upper compression chamber and / or the lower compression chamber, the slider structure moves toward the second end closer to the receiving hole, and the air inlet connects the upper compression chamber and / or the lower compression chamber through the third end of the connecting hole; When the gas pressure in the upper compression chamber and / or the lower compression chamber is greater than the gas pressure in the air supply hole, the slider structure moves toward the first end closer to the receiving hole, and the slider structure blocks the first end and / or the third end of the receiving hole.

2. The pump body assembly according to claim 1, characterized in that, The connecting holes include a first connecting hole, a second connecting hole, and a third connecting hole arranged sequentially along the radial direction of the intermediate plate. The first end of the first connecting hole passes through at least one end face of the intermediate plate and is connected to the upper compression cavity and / or the lower compression cavity. The second end of the first connecting hole is connected to the first end of the second connecting hole, the second end of the second connecting hole is connected to the second end of the receiving hole, the second end of the second connecting hole is connected to the first end of the third connecting hole, and the second end of the third connecting hole is connected to the third end of the receiving hole.

3. The pump body assembly according to claim 2, characterized in that, The vertical projection of the first connecting hole onto the end face of the upper cylinder and / or the lower cylinder falls at least partially within the range of the upper compression chamber of the upper cylinder and / or the lower compression chamber of the lower cylinder; the vertical projection of the third connecting hole onto the end face of the upper cylinder and / or the lower cylinder falls within the range of the upper cylinder end wall of the upper cylinder and / or the cylinder end wall of the lower cylinder.

4. The pump body assembly according to claim 2, characterized in that, The first connecting hole is a first vertical hole, which extends axially along the intermediate plate; the second connecting hole is a first horizontal hole, which extends radially along the intermediate plate; the third connecting hole includes a second vertical hole, a second horizontal hole, and a third vertical hole, wherein the second vertical hole extends axially along the intermediate plate, the second horizontal hole extends radially along the intermediate plate, and the third vertical hole extends axially along the intermediate plate.

5. The pump body assembly according to claim 4, characterized in that, The air inlet, the receiving hole, and the first transverse hole are coaxially arranged.

6. The pump body assembly according to claim 1, characterized in that, The slider structure includes a stop block, which is cylindrical in shape.

7. The pump body assembly according to claim 6, characterized in that, The slider structure also includes a spring connected to the stop block, the spring being located at the second end of the receiving hole.

8. The pump body assembly according to claim 6, characterized in that, When the cross-sectional dimension of the stop block corresponding to the first end of the receiving hole is not less than the axial cross-sectional dimension of the first end of the receiving hole, the stop block can block the first end of the receiving hole; When the height of the stop block is not less than the inner diameter of the receiving hole, and the cross-sectional dimension of the stop block corresponding to the third end of the receiving hole is not less than the axial cross-sectional dimension of the third end of the receiving hole, the stop block can block the third end of the receiving hole.

9. A compressor, characterized in that, include: The casing has an air inlet on its side wall; The pump body assembly as claimed in any one of claims 1 to 8, wherein the pump body assembly is disposed inside the housing; The reservoir includes an air supply pipe that extends into the interior of the housing through the air inlet and is connected to the pump assembly through the air supply hole.

10. An air conditioner, characterized in that, Includes the compressor as described in claim 9.

Images