Air inlet structure, compressor and heat exchange system
By setting multiple overflow cross-sections in the compressor intake airflow channel, the cross-section design is gradually reduced, and the problem of reduced operation efficiency caused by the reduction of suction flow is solved, and the effect of improving suction flow and cooling capacity is achieved.
Patent Information
- Application Number
- CN202422084364.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The problem of operating efficiency of existing compressors is reduced due to reduced suction flow.
An intake structure is designed, and multiple overflow cross-sections are formed in the intake channel, and the front cross-section is smaller than the rear cross-section, so as to gradually increase the gas flow rate, reduce flow resistance, and increase the suction flow rate.
By gradually increasing the gas flow rate, avoiding the increase in flow resistance caused by sudden changes in the flow rate, increasing the suction flow and cooling capacity of the compressor, and improving operating efficiency.
Smart Images
Figure CN223152285U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressor intake, and particularly relates to an intake structure, a compressor and a heat exchange system. Background Art
[0002] At present, a rolling piston compressor mainly consists of a pump body, a housing, a liquid reservoir, a motor, etc. Among them, although the liquid reservoir has functions such as liquid storage, oil-gas separation, and oil return, its volume is relatively large, which will increase the installation space of the compressor accordingly. In order to reduce the volume of the compressor, related technologies propose a heat exchange system, which replaces functions such as oil-gas separation of the liquid reservoir through devices such as an oil-gas separator in the system, so as to replace the liquid reservoir with an intake pipe, in order to reduce the radial space of the compressor itself and save the space required for compressor installation. However, since the size of the intake pipe is much smaller than that of the liquid reservoir, the suction flow rate of the compressor is significantly reduced, affecting the operating efficiency of the compressor. Summary of the Utility Model
[0003] The main purpose of the utility model is to propose an intake structure, a compressor and a heat exchange system, aiming at solving the problem that the operating efficiency of the existing compressor decreases due to the reduction of the suction flow rate.
[0004] To achieve the above object, the intake structure proposed by the utility model is used for a compressor. An intake air flow channel is formed in the intake structure, and the intake air flow channel has a plurality of cross-sectional areas of fluid passing at different positions.
[0005] Among at least three cross-sectional areas of fluid passing arranged along the intake direction, the cross-sectional area of fluid passing of the cross-sectional area of fluid passing at the front side is smaller than the cross-sectional area of fluid passing of the cross-sectional area of fluid passing at the rear side.
[0006] In an embodiment, the intake structure includes a plurality of pipe sections connected in sequence.
[0007] The intake air flow channel includes the inner cavities of the plurality of pipe sections.
[0008] In an embodiment, at least three pipe sections are provided, and each pipe section is set as a pipe section with an equal inner diameter.
[0009] Along the intake direction, the inner diameter of the pipe section at the front side is smaller than the inner diameter of the pipe section at the rear side.
[0010] In an embodiment, at least three pipe sections include a first pipe section, a second pipe section and a third pipe section arranged along the intake direction. The inner diameter of the first pipe section is φc, the inner diameter of the second pipe section is φa, and the inner diameter of the third pipe section is φb, where:
[0011] 0.6φc < φa < 0.9φc; and / or,
[0012] 0.75φa < φb ≤ φa.
[0013] In one embodiment, at least three of the pipe sections include a first pipe section, a second pipe section, and a third pipe section arranged along the intake direction. At least three of the pipe sections further include a fourth pipe section. One end of both the fourth pipe section and the third pipe section communicates with the second pipe section, and the other ends of the fourth pipe section and the third pipe section are respectively used to correspondingly communicate with two cylinders of the compressor.
[0014] The inner diameter of the fourth pipe section is smaller than the inner diameter of the second pipe section.
[0015] In one embodiment, the third pipe section is connected to the axial end of the second pipe section; and / or,
[0016] The fourth pipe section is connected to the side of the second pipe section; and / or,
[0017] The inner diameters of the third pipe section and the fourth pipe section are the same.
[0018] In one embodiment, the material of the first pipe section includes steel; and / or,
[0019] The material of the second pipe section and / or the third pipe section includes brass; and / or,
[0020] The material of the fourth pipe section includes brass.
[0021] In one embodiment, among two mutually connected pipe sections, the inner diameter of the pipe orifice of one of the pipe sections is tapered or flared.
[0022] In one embodiment, multiple sequentially connected pipe sections include a first pipe section, a second pipe section, and a third pipe section. The third pipe section is used to connect to the cylinder of the compressor, where:
[0023] The intake structure further includes a connecting pipe section, and the connecting pipe section is connected to the end of the first pipe section facing away from the second pipe section; and / or,
[0024] The intake structure further includes a collar sleeved on the first pipe section, and the collar is used to be installed on the main housing of the compressor.
[0025] In one embodiment, the material of the connecting pipe section includes brass; and / or,
[0026] The material of the collar includes steel.
[0027] The present utility model further provides a compressor, including the above intake structure.
[0028] In one embodiment, the compressor further includes a lower housing, a main housing, and an upper housing that are sequentially arranged from bottom to top. A cylinder is provided in the main housing, and the height of the main housing is H2;
[0029] The intake structure includes a plurality of sequentially connected pipe sections. There are at least three of the plurality of pipe sections, and each pipe section is set as a pipe section with an equal inner diameter. The at least three pipe sections include a first pipe section, a second pipe section, and a third pipe section arranged along the intake direction. The third pipe section is connected to the cylinder. The height of the first pipe section in the vertical direction is H3, and 0.7H2 < H3 < 0.9H2.
[0030] In one embodiment, the compressor includes a refrigeration compressor.
[0031] The present invention also provides a heat exchange system, including the above-mentioned compressor.
[0032] In the technical solution of the present invention, by providing an intake air flow channel, a plurality of the cross-sectional areas of the fluid flow are formed at different positions of the intake air flow channel to deliver gas to the compressor. At the same time, the cross-sectional area of the cross-sectional area of the fluid flow at the front side is smaller than the cross-sectional area of the cross-sectional area of the fluid flow at the rear side, so that the cross-section of the intake structure gradually decreases along the intake direction, so that the gas flow velocity in the intake air flow channel gradually increases along the intake direction, so that the gas flow velocity increases gently, so as to avoid an increase in flow resistance caused by a sudden change in gas flow velocity, so as to increase the suction flow rate of the compressor, avoid affecting the operating efficiency of the compressor, so as to achieve the purpose of increasing the suction flow rate and increasing the refrigeration capacity, thereby solving the problem that the operating efficiency of the existing compressor decreases due to the reduction of the suction flow rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0034] Figure 1 It is a front view structural schematic diagram of an embodiment of the compressor provided by the present invention;
[0035] Figure 2 For Figure 1 the three-dimensional structural schematic diagram of the compressor in;
[0036] Figure 3 For Figure 1 the structural schematic diagram of an embodiment of the intake structure in.
[0037] Description of the reference numerals in the drawings:
[0038] 100, intake structure; 110, first pipe section; 120, second pipe section; 130, third pipe section; 140, fourth pipe section; 150, connecting pipe section; 160, collar.
[0039] 1000, compressor; 210, lower housing; 220, main housing; 230, upper housing.
[0040] The realization, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners
[0041] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0042] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0043] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0044] At present, a scroll compressor mainly consists of a pump body, a housing, a liquid reservoir, a motor, etc. Among them, although the liquid reservoir has functions such as liquid storage, oil-gas separation, and oil return, its volume is relatively large, which will increase the installation space of the compressor accordingly. In order to reduce the volume of the compressor, related technologies propose a heat exchange system that replaces functions such as oil-gas separation of the liquid reservoir through devices such as an oil-gas separator in the system, so as to replace the liquid reservoir with an intake pipe, in order to reduce the radial space of the compressor itself and save the space required for compressor installation. However, because the size of the intake pipe is much smaller than that of the liquid reservoir, the suction flow rate of the compressor is significantly reduced, affecting the operating efficiency of the compressor.
[0045] Based on this, the present utility model proposes an intake structure for a compressor, aiming at the problem that the operating efficiency of the existing compressor decreases due to the reduction of the suction flow rate. Among them, Figures 1 to 3 FIG. is a schematic structural diagram of the compressor provided by the present utility model.
[0046] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, an intake air flow passage is formed in the intake structure 100. The intake air flow passage has a plurality of flow cross-sections at different positions. Among at least three of the flow cross-sections arranged along the intake air direction, the flow cross-section at the front side has a smaller flow area than the flow cross-section at the rear side.
[0047] In the technical solution of the present utility model, by setting the intake air flow passage, a plurality of the flow cross-sections are formed at different positions of the intake air flow passage to convey gas to the compressor 1000. At the same time, the flow cross-section at the front side has a smaller flow area than the flow cross-section at the rear side, so that the cross-section of the intake structure 100 gradually decreases along the intake air direction, so that the gas flow velocity in the intake air flow passage gradually increases along the intake air direction, so that the gas flow velocity increases gently, so as to avoid an increase in flow resistance due to a sudden change in gas flow velocity, so as to increase the suction flow rate of the compressor 1000, avoid affecting the operating efficiency of the compressor 1000, and achieve the purpose of increasing the suction flow rate and increasing the refrigerating capacity, thereby solving the problem that the operating efficiency of the existing compressor 1000 decreases due to the reduction of the suction flow rate.
[0048] Furthermore, the intake structure 100 includes a plurality of sequentially connected pipe segments, and the intake air flow passage includes the inner cavities of the plurality of pipe segments. In this way, by setting the plurality of pipe segments, the intake air flow passage can be formed. It can be understood that there are various types of the intake structure 100. In other embodiments, the intake structure 100 is a single pipe, etc., and the present utility model does not limit this.
[0049] Furthermore, at least three of the pipe sections are provided. Each of the pipe sections is set as a pipe section with an equal inner diameter. Along the intake air direction, the inner diameter of the pipe section at the front side is smaller than that of the pipe section at the rear side. In this way, each of the pipe sections uses a pipe with an equal diameter, which is convenient for using finished pipes and is beneficial to reducing the cost of the intake structure 100. At the same time, along the intake air direction, the inner diameter of the pipe section at the front side is smaller than that of the pipe section at the rear side, so that the cross-sectional area of the intake air flow passage gradually decreases and the intake air flow velocity gradually increases, so as to increase the suction flow rate of the compressor 1000.
[0050] It should be noted that there are various ways to set the pipe sections. Of course, in other embodiments, the multiple pipe sections are arranged in a gradually decreasing manner, and along the intake air direction, the inner diameter of the pipe section at the front side is smaller than that of the pipe section at the rear side. In this way, the cross-sectional area of the intake air flow passage gradually decreases and the intake air flow velocity gradually increases, thereby increasing the suction flow rate of the compressor 1000.
[0051] In an embodiment of the present invention, at least three of the pipe sections include a first pipe section 110, a second pipe section 120, and a third pipe section 130 arranged along the intake air direction. The inner diameter of the first pipe section 110 is φc, the inner diameter of the second pipe section 120 is φa, and the inner diameter of the third pipe section 130 is φb, and 0.6φc < φa < 0.9φc. Since the greater the gas flow velocity in the intake air flow passage, the greater the flow resistance of the intake air flow passage, which will cause the suction flow rate of the compressor 1000 to decrease, so 0.6φc < φa < 0.9φc can both increase the gas flow velocity of the intake structure 100 and reduce the flow resistance of the intake structure 100, thereby increasing the suction flow rate of the compressor 1000. It can be understood that the ratio φa / φc of the inner diameter of the second pipe section 120 to the inner diameter of the first pipe section 110 can be 0.65, 0.7, 0.75, or 0.8. Of course, it can also be any value within the above range, and the present invention does not limit this.
[0052] In another embodiment of the present utility model, at least three of the pipe sections include a first pipe section 110, a second pipe section 120, and a third pipe section 130 arranged along the intake direction. The inner diameter of the first pipe section 110 is φc, the inner diameter of the second pipe section 120 is φa, and the inner diameter of the third pipe section 130 is φb, where 0.75φa < φb ≤ φa. Since the greater the gas velocity in the intake flow channel, the greater the flow resistance of the intake flow channel, which will cause the suction flow rate of the compressor 1000 to decrease, so 0.75φa < φb ≤ φa can both increase the gas velocity of the intake structure 100 and reduce the flow resistance of the intake structure 100, thereby increasing the suction flow rate of the compressor 1000. It can be understood that the ratio φb / φa of the inner diameter of the third pipe section 130 to the inner diameter of the second pipe section 120 can be 0.8, 0.85, 0.9, or 1. Of course, it can also be any value within the above range, and the present utility model does not limit this.
[0053] It should be noted that the above two related technical features: "0.6φc < φa < 0.9φc" and "0.75φa < φb ≤ φa" can be set alternatively or simultaneously. Obviously, setting them simultaneously has a better effect.
[0054] In an embodiment of the present utility model, at least three of the pipe sections include a first pipe section 110, a second pipe section 120, and a third pipe section 130 arranged along the intake direction. At least three of the pipe sections further include a fourth pipe section 140. One end of both the fourth pipe section 140 and the third pipe section 130 is connected to the second pipe section 120, and the other ends of the fourth pipe section 140 and the third pipe section 130 are respectively used to connect to two cylinders of the compressor 1000. The inner diameter of the fourth pipe section 140 is smaller than the inner diameter of the second pipe section 120. Thus, by providing the third pipe section 130 and the fourth pipe section 140, air can be supplied to the two cylinders of the compressor 1000 respectively, so that the intake structure 100 can be adapted to the cylinders of the compressor 1000.
[0055] Furthermore, there are various connection positions between the third pipe section 130 and the second pipe section 120. It can be at the end of the second pipe section 120 or on the side of the second pipe section 120, etc. The present utility model does not limit this. Specifically, in this embodiment, the third pipe section 130 is connected to the axial end of the second pipe section 120. Thus, the end of the second pipe section 120 can be connected to the third pipe section 130 to prevent gas from accumulating in the last section of the second pipe section 120.
[0056] The connection position of the fourth pipe section 140 and the second pipe section 120 can be various. It can be at the end of the second pipe section 120 or at the side of the second pipe section 120, etc. The present utility model does not limit this. Specifically, in an embodiment of the present utility model, the fourth pipe section 140 is connected to the side of the second pipe section 120, so that the fourth pipe section 140 can communicate with the second pipe section 120, enabling the fourth pipe section 140 to supply gas to the cylinder of the compressor 1000.
[0057] The inner diameters of the third pipe section 130 and the fourth pipe section 140 can be the same or different. The present utility model does not limit this. Specifically, in an embodiment of the present utility model, the inner diameters of the third pipe section 130 and the fourth pipe section 140 are the same. In this way, the third pipe section 130 and the fourth pipe section 140 having the same inner diameter can not only be adapted to the cylinder of the compressor 1000, but also facilitate bulk procurement, which is beneficial to reducing the procurement cost.
[0058] It should be noted that for the above three related technical features: "the third pipe section 130 is connected to the axial end of the second pipe section 120", "the fourth pipe section 140 is connected to the side of the second pipe section 120", and "the inner diameters of the third pipe section 130 and the fourth pipe section 140 are the same", they can be set selectively, two of them can be set, or all three can be set simultaneously. Obviously, setting all three simultaneously has a better effect.
[0059] In an embodiment of the present utility model, the material of the first pipe section 110 includes steel. In this way, by using steel for the first pipe section 110, on the one hand, the cost of the intake structure 100 can be reduced, and on the other hand, the strength of the intake structure 100 can be increased to facilitate fixing the intake structure 100 on the housing of the compressor 1000. Of course, in other embodiments, the material of the first pipe section 110 can also be brass. The present utility model does not limit this.
[0060] In an embodiment of the present utility model, the material of the second pipe section 120 and / or the third pipe section 130 includes brass. Since brass has relatively high strength and toughness and is easy to form, using brass for the second pipe section 120 and / or the third pipe section 130 can not only withstand the high pressure and vibration generated during the operation of the compressor 1000 without being easily damaged, but also be conveniently made into joints of various shapes and sizes to meet different installation requirements. Of course, in other embodiments, the material of the second pipe section 120 and / or the third pipe section 130 can also be steel, etc. The present utility model does not limit this.
[0061] In one embodiment of the present invention, the material of the fourth pipeline section 140 includes brass. Since brass has high strength and toughness and is easy to shape, the second pipeline section 120 and / or the third pipeline section 130 are made of brass, which can not only withstand the high pressure and vibration generated by the operation of the compressor 1000 without being easily damaged, but also can be easily made into joints of various shapes and sizes to meet different installation requirements. Of course, in other embodiments, the material of the fourth pipeline section 140 can also be brass, and the present invention is not limited to this.
[0062] It should be noted that the above three related technical features: "the material of the first pipeline section 110 includes steel", "the material of the second pipeline section 120 and / or the third pipeline section 130 includes brass", and "the material of the fourth pipeline section 140 includes brass" can be set one by one, two by two, or at the same time. Obviously, setting them at the same time will have a better effect.
[0063] In one embodiment of the utility model, in the two interconnected pipeline sections, the inner diameter of the pipe mouth of one of the pipeline sections is gradually contracted or gradually expanded. In this way, the interface of the pipeline section adopts a gradually contracted or gradually expanded setting to be plugged and matched with the other pipeline section to form a tight fit at the connection, which can not only enable the connection to maintain the stability of the connection in a high pressure and vibration environment, but also form a good sealing effect, avoid the additional setting of sealing materials, and facilitate loading and unloading, and facilitate subsequent maintenance or replacement.
[0064] In one embodiment of the utility model, the plurality of pipeline sections connected in sequence include a first pipeline section 110, a second pipeline section 120 and a third pipeline section 130, wherein the third pipeline section 130 is used to connect to the cylinder of the compressor 1000, and the intake structure 100 also includes a connecting pipeline section 150, wherein the connecting pipeline section 150 is connected to one end of the first pipeline section 110 away from the second pipeline section 120, so that the connecting pipeline section 150 is provided so as to be connected to the heat exchange system, so that the compressor 1000 can compress the gas in the heat exchange system.
[0065] In an embodiment of the present utility model, the multiple successively connected pipe sections include a first pipe section 110, a second pipe section 120, and a third pipe section 130. The third pipe section 130 is used to connect the cylinder of the compressor 1000. The intake structure 100 further includes a collar 160 sleeved on the first pipe section 110. The collar 160 is used to be installed on the main housing 220 of the compressor 1000. Thus, by providing the collar 160, the first pipe section 110 is fixed to the main housing 220 of the compressor 1000, so as to reduce the vibration of the intake pipeline. Of course, in other embodiments, the intake pipeline can be fixed to the main housing 220 of the compressor 1000 by a strap, etc., as long as the intake structure 100 can be fixed to the main housing 220 of the compressor 1000, and the present utility model does not limit this.
[0066] It should be noted that for the above two related technical features: "the intake structure 100 further includes a connecting pipe section 150" and "the intake structure 100 further includes a collar 160 sleeved on the first pipe section 110", either one can be provided or both can be provided simultaneously. Obviously, the effect of providing both simultaneously is better.
[0067] In an embodiment of the present utility model, the material of the connecting pipe section 150 includes brass. Since brass has relatively high strength and toughness and is easy to form, the connecting pipe section 150 is made of brass, which can not only withstand the high pressure and vibration generated during the operation of the compressor 1000 without being easily damaged, but also be conveniently made into joints of various shapes and sizes to meet different installation requirements. Of course, in other embodiments, the material of the connecting pipe section 150 can also be brass, and the present utility model does not limit this.
[0068] In an embodiment of the present utility model, the material of the collar 160 includes steel. The collar 160 is made of steel, so that the material of the collar 160 is consistent with that of the first pipe section 110. On the one hand, the cost of the collar 160 can be reduced, and on the other hand, the strength of the collar 160 can be increased to fix the intake structure 100 on the main housing 220 of the compressor 1000. Of course, in other embodiments, the material of the first pipe section 110 can also be brass, and the present utility model does not limit this.
[0069] The present utility model also provides a compressor 1000, which includes an air intake structure 100. The specific structure of the air intake structure 100 refers to the above-mentioned embodiments. Since this compressor 1000 adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated herein one by one. Among them, the compressor 1000 includes a refrigeration compressor 1000.
[0070] In an embodiment of the present utility model, the compressor 1000 further includes a lower housing 210, a main housing 220, and an upper housing 230 arranged in sequence from bottom to top. A cylinder is provided in the main housing 220. The height of the main housing 220 is H2. The air intake structure 100 includes a plurality of sequentially connected pipe sections. There are at least three of the plurality of pipe sections, and each pipe section is set as a pipe section with an equal inner diameter. The at least three pipe sections include a first pipe section 110, a second pipe section 120, and a third pipe section 130 arranged along the air intake direction. The third pipe section 130 is connected to the cylinder. The height of the first pipe section 110 in the vertical direction is H3, and 0.7H2 < H3 < 0.9H2. Since the longer the first pipe section 110 is, the farther the upper end of the first pipe section 110 is from its fixed position, the easier it is to vibrate, resulting in a greater noise of the compressor 1000. And the shorter the first pipe section 110 is, the longer the second pipe section 120 will be, resulting in an increase in the cost of the air intake structure 100. And 0.7H2 < H3 < 0.9H2 is beneficial to reducing the vibration noise of the air intake structure 100 and can also reduce the cost of the air intake structure 100.
[0071] The present utility model also provides a heat exchange system, which includes a compressor 1000. The specific structure of the compressor 1000 refers to the above-mentioned embodiments. Since this heat exchange system adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated herein one by one. Among them, there are various types of the heat exchange system, which can be a refrigeration system or an air source heat pump system, etc. The present utility model does not make any limitation thereto.
[0072] The above is only an exemplary embodiment of the present utility model, and it does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. An intake structure for a compressor, characterized in that, An intake flow channel is formed in the intake structure, and the intake flow channel has a plurality of flow cross sections at different positions; Among the at least three flow cross sections arranged along the air intake direction, the flow area of the flow cross section at the front side is smaller than the flow area of the flow cross section at the rear side.
2. The intake structure according to claim 1, wherein The air intake structure comprises a plurality of pipeline sections connected in sequence; The intake flow passage includes an inner cavity of a plurality of the pipeline sections.
3. The intake structure according to claim 2, characterized in that, At least three of the plurality of pipeline sections are provided, and each of the pipeline sections is provided as a pipeline section with a constant inner diameter; Along the air intake direction, the inner diameter of the pipeline section at the front side is smaller than the inner diameter of the pipeline section at the rear side.
4. The intake structure according to claim 3, characterized in that, The at least three pipeline sections include a first pipeline section, a second pipeline section and a third pipeline section arranged along the air intake direction, the inner diameter of the first pipeline section is φc, the inner diameter of the second pipeline section is φa, and the inner diameter of the third pipeline section is φb, wherein: 0.6φc<φa<0.9φc;and / or, 0.75φa<φb≤φa.
5. The intake structure according to claim 3, characterized in that, The at least three pipeline sections include a first pipeline section, a second pipeline section and a third pipeline section arranged along the air intake direction, and the at least three pipeline sections also include a fourth pipeline section, one end of the fourth pipeline section and the third pipeline section are both connected to the second pipeline section, and the other ends of the fourth pipeline section and the third pipeline section are respectively used to correspond to the two cylinders of the compressor; The inner diameter of the fourth pipeline section is smaller than the inner diameter of the second pipeline section.
6. The intake structure according to claim 5, characterized in that, The third pipeline section is connected to an axial end of the second pipeline section; and / or, The fourth pipeline section is connected to a side of the second pipeline section; and / or, The inner diameters of the third pipeline section and the fourth pipeline section are the same.
7. The intake structure according to claim 5, wherein, The material of the first pipeline section includes steel; and / or, The material of the second pipeline section and / or the third pipeline section includes brass; and / or, The material of the fourth pipeline section includes brass.
8. The intake structure according to claim 2, wherein, In the two interconnected pipeline sections, the inner diameter of the pipe opening of one of the pipeline sections is gradually contracted or gradually expanded.
9. The intake structure according to claim 2, characterized in that, The plurality of pipeline sections connected in sequence include a first pipeline section, a second pipeline section and a third pipeline section, wherein the third pipeline section is used to connect the cylinder of the compressor, wherein: The air intake structure further comprises a connecting pipeline section, wherein the connecting pipeline section is connected to an end of the first pipeline section away from the second pipeline section; and / or, The air intake structure further comprises a collar sleeved on the first pipe section, and the collar is used for being installed on the main housing of the compressor.
10. The intake structure according to claim 9, characterized in that, The material of the connecting pipe section includes brass; and / or, The material of the collar includes steel.
11. A compressor, characterized in that, It comprises the air intake structure as claimed in any one of claims 1 to 10.
12. The compressor according to claim 11, characterized in that, The compressor further comprises a lower shell, a main shell and an upper shell arranged in sequence from bottom to top, a cylinder is arranged in the main shell, and the height of the main shell is H2; The intake structure includes a plurality of pipe sections that are sequentially connected. There are at least three of the plurality of pipe sections, and each of the pipe sections is set as a pipe section with an equal inner diameter. At least three of the pipe sections include a first pipe section, a second pipe section, and a third pipe section arranged along the intake direction. The third pipe section is connected to the cylinder. The height of the first pipe section in the up and down direction is H3, and 0.7H2 < H3 < 0.9H2.
13. The compressor according to claim 12, wherein, The compressor includes a refrigeration compressor.
14. A heat exchange system, characterized in that, It includes the compressor according to any one of claims 12 to 13.