Compressor air supplementing structure and compressor

Abstract

The application relates to a compressor air supplement structure and a compressor, which comprises a structure body, an air supplement channel and a one-way flow component are arranged on the structure body, a plurality of channel branches are arranged on the air supplement channel, and the plurality of channel branches are communicated with air supplement openings. The compressor air supplement structure utilizes the air supplement pressure difference of each air supplement working condition to push the air supplement path switching, realizes the air supplement angle widening under different air supplement working conditions, improves the air supplement opening angle from the original highest 170 DEG to 210 DEG, improves the air supplement capacity of the air supplement working condition by 10%, increases the air supplement action range, and enhances the adaptability of the air supplement structure.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a compressor gas supply structure and a compressor. Background Technology

[0002] Currently, gas replenishment structures often use flanges or partitions for gas replenishment. Their gas replenishment opening and closing angles are relatively fixed, which is effective for specific system operating conditions. However, this structure cannot adapt to different system operating conditions at the same time. It often results in sufficient gas replenishment in one operating condition, but insufficient gas replenishment in another operating condition, and it cannot achieve full-band gas replenishment effect.

[0003] The existing structure has a large range of air replenishment angles that vary greatly under different system operating conditions. This is because when the pressure in the cylinder compression chamber is greater than the air replenishment pressure, there will be a backflow phenomenon, which makes it impossible for the existing structure to simultaneously accommodate air replenishment angles under different operating conditions. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a compressor gas replenishment mechanism. This mechanism switches the gas replenishment structure based on the gas replenishment pressure to accommodate differences in gas replenishment angles under different system operating conditions. This increases the gas replenishment angle under different operating conditions, expands the gas replenishment range, and enhances the adaptability of the gas replenishment structure.

[0005] The first aspect of the present invention provides a compressor air replenishment structure, including a structural body, wherein an air replenishment channel is provided on the structural body, and wherein the air replenishment channel is provided with multiple channel branches, each of the channel branches being connected to an air replenishment port.

[0006] In one embodiment, the compressor gas supply structure further includes a one-way flow component, which allows the gas supply source to supply gas to the compressor's compression chamber during gas supply and closes the gas supply channel when gas supply stops.

[0007] In one embodiment, the unidirectional flow component is disposed within the channel branch.

[0008] In one embodiment, the structural body includes a flange and a base plate, the flange and the base plate are fixedly connected, the air supply channel and channel branches are disposed on the side of the flange that contacts the base plate, and the air supply port is disposed on the base plate and corresponds to the channel branches.

[0009] In one embodiment, the unidirectional flow component includes a gas replenishment plunger structure that can be pushed into the gas replenishment port when gas replenishment stops.

[0010] In one embodiment, the one-way flow component includes a plunger and a spring. The plunger includes a plunger body, one end of which extends outward to form an extension portion. The extension portion is provided with a first groove, which communicates with the air supply port. The other end of the plunger body is provided with a second groove, which communicates with the channel branch. A portion of the spring is disposed in the second groove, and the spring can push the plunger into the air supply port when air supply stops.

[0011] In one embodiment, the one-way flow component further includes a one-way valve, and the groove wall of the first groove is provided with a through hole communicating with the air supply channel. The through hole is closed by the one-way valve, and the one-way valve is provided on the inner wall of the second groove.

[0012] In one embodiment, the extension and the air inlet are clearance-fitted.

[0013] In one embodiment, the diameter of the extension is smaller than the diameter of the plunger body.

[0014] In one embodiment, the distribution of the air supply channels is determined by the compressor system, and the direction of the channel branches corresponds to the air supply port.

[0015] A second aspect of the present invention provides a compressor including the compressor gas supply structure described in any one or more of the foregoing claims.

[0016] Compared with the prior art, the compressor gas replenishment structure of the present invention utilizes the difference in gas replenishment pressure under various gas replenishment conditions to drive the switching of gas replenishment paths, thereby widening the gas replenishment angle under different gas replenishment conditions. The gas replenishment opening angle is increased from the original maximum of 170° to 210°, the gas replenishment capacity under gas replenishment conditions is increased by 10%, the gas replenishment range is increased, and the adaptability of the gas replenishment structure is enhanced.

[0017] The above-mentioned technical features can be combined in various technically feasible ways to produce new implementation schemes, as long as the purpose of the present invention can be achieved. Attached Figure Description

[0018] The invention will now be described in more detail based on embodiments that are merely non-limiting and with reference to the accompanying drawings. Wherein:

[0019] Figure 1 A schematic diagram of a compressor gas injection structure according to the prior art is shown;

[0020] Figure 2 A schematic diagram of the compressor gas supply structure of the present invention is shown;

[0021] Figure 3 Showing Figure 2 An exploded view of the compressor's gas supply structure.

[0022] Figure 4 Showing Figure 2 A plan view of the compressor's gas supply structure;

[0023] Figure 5 A schematic diagram of the compressor gas supply structure of the present invention is shown;

[0024] Figure 6 A cross-sectional view of the air supply plunger structure of the compressor air supply structure of the present invention is shown;

[0025] Figure 7 A partially enlarged view of the one-way valve of the air-filling plunger structure of the present invention is shown.

[0026] In the figures, identical components are labeled with the same reference numerals. The figures are not drawn to scale.

[0027] The attached figures are labeled as follows:

[0028] 1. Flange; 2. Base plate; 3. Air supply channel; 31. First channel branch; 32. Second channel branch; 4. Air supply port; 5. Plunger; 6. Spring; 7. Through hole; 8. Check valve; 9. Screw. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, as long as there is no conflict, the various embodiments and features in each embodiment of the present invention can be combined with each other, and the resulting technical solutions are all within the protection scope of the present invention.

[0030] For any parts not mentioned in this invention, existing technologies can be used or referenced.

[0031] Currently, air intake structures are commonly found in twin-cylinder and multi-cylinder designs, while single-cylinder air intake is relatively less common. Common air intake structures include... Figure 1 It consists of an air supply channel, a throttling channel, and an air supply port. The cross-sectional area of ​​the air supply channel is greater than that of the throttling channel and is greater than or equal to that of the air supply port. The air supply path is single. Due to the limited roller thickness, the air supply opening angle of this structure covers about 0-170°. It cannot simultaneously meet the needs of different system operating conditions. It often results in sufficient air supply in the cooling mode but insufficient air supply in the heating mode, making it difficult to meet customer needs.

[0032] To address the aforementioned problems, the first aspect of this invention proposes a compressor gas supply structure, such as... Figure 2 and Figure 3 As shown, the compressor air replenishment structure of the present invention includes a structural body, on which an air replenishment channel 3 is provided, wherein the air replenishment channel is provided with multiple channel branches, and each of the channel branches is connected to an air replenishment port.

[0033] like Figure 3 As shown, in this embodiment, the air supply channel 3 includes two channel branches: a first channel branch 31 and a second channel branch 32. The number of channel branches can be selected according to the actual situation of the compressor. Since the channel branches are connected to the air supply channel, they are also interconnected.

[0034] The compressor gas supply structure of the present invention has multiple channel branches. By setting multiple gas supply holes and channels, the gas supply can be enabled to open at the optimal time for each working condition. Thus, over the time cycle of each working condition, the difference in gas supply pressure of each gas supply condition can be used to drive the switching of the gas supply path, thereby widening the gas supply angle under different gas supply conditions and greatly improving the gas supply efficiency.

[0035] like Figure 6 As shown, in an optional embodiment, the compressor gas replenishment mechanism of the present invention further includes a one-way flow component, which allows the gas replenishment source to replenish the compressor's compression chamber during gas replenishment and closes the gas replenishment channel 3 when gas replenishment stops.

[0036] Preferably, the unidirectional flow component is disposed within the channel branch.

[0037] like Figure 2 As shown, the main body of the structure includes a flange 1 and a base plate 2, which are fixedly connected. The air supply channel 3 and channel branches are located on the side of the flange 1 that contacts the base plate 2. The air supply port 4 is located on the base plate 2 and corresponds to the channel branches.

[0038] Specifically, flange 1 and base plate 2 can be fixedly connected by screws.

[0039] In a preferred embodiment, the unidirectional flow component includes a gas replenishment plunger structure, wherein the plunger 5 can be pushed into the gas replenishment port 4 when gas replenishment stops.

[0040] like Figure 6 As shown, in a specific embodiment, the unidirectional flow component includes a plunger 5 and a spring 6. The plunger includes a plunger body, one end of which extends outward to form an extension portion. The extension portion is provided with a first groove, which communicates with the air supply port 4. The other end of the plunger body is provided with a second groove, which communicates with the channel branch. A portion of the spring 6 is disposed in the second groove, and the spring can push the plunger 5 into the air supply port 4 when the air supply stops.

[0041] like Figure 5 The diagram shown illustrates the opening principle of spring 6, and the force formula is as follows:

[0042] F2-mg-F1=ma, F2=p / S, F1=k*△x,

[0043] Where F2 is the air supply force, m refers to the mass of the plunger, p is the pressure of the flash generator, S is the flow area, K is the elastic coefficient of the plunger elastic element, Δx is the displacement of the elastic element, and a is the acceleration of the elastic element. When a > 0, the plunger rises; when a < 0, the plunger falls to fill the air supply port.

[0044] More specifically, Figure 6 The force diagram of the air-filling plunger structure in this embodiment is shown, as follows: Figure 6 As shown, F3 is the internal pressure of the compressor's compression chamber, F2 is the replenishing gas force, and F1 is the spring force. When F2 + F3 - mg - F1 > 0, there are two possible scenarios:

[0045] In the first scenario, F2 > F3, plunger 5 rises, and air replenishment begins.

[0046] In the second case, F2 < F3, the plunger 5 rises. At this time, because the pressure in the compression chamber is greater than the replenishment pressure, replenishment is not possible.

[0047] When F2+F3-mg-F1<0, the plunger 5 moves downward under the action of the spring 6, and the extension is filled into the air supply port, stopping the air supply.

[0048] Therefore, the position of the air replenishment path can be switched by controlling the gravity of spring 6 and plunger 5.

[0049] More preferably, the one-way flow component also includes a one-way valve 8, such as Figure 7 As shown, a through hole 7 communicating with the air supply channel 3 is provided on the groove wall of the first groove. The through hole 7 is closed by a one-way valve 8, which is preferably fixed to the inner wall of the second groove by a screw 9. The one-way valve 8 realizes one-way air supply of the plunger structure. The one-way valve 8 is opened by external pressure. When the pressure inside the compressor cavity is greater than the external pressure, the pressure acts on the valve plate of the one-way valve, and the valve plate covers the air supply channel, preventing air supply and thus reducing backflow. By setting the one-way valve, one-way air supply of the air supply structure is realized, reducing air supply leakage and improving the air supply angle.

[0050] In a preferred embodiment, the extension and the air inlet 4 are in clearance fit. When air supply stops, the plunger 5 moves downward under the action of the spring 6, and the extension is filled into the air inlet 4, reducing clearance loss.

[0051] More preferably, the diameter of the extension is smaller than the diameter of the plunger body.

[0052] In one specific embodiment, the distribution of the air supply channel 3 is determined by the compressor system, and the direction of the channel branches corresponds to the air supply port 4.

[0053] The location of the air supply port 4 must be set within the range where the internal pressure is less than the air supply pressure angle. Different air supply channel branches are set up corresponding to air supply port 4. This allows for switching of the air supply channel based on the air supply pressure to address differences in air supply angles under different system operating conditions, thereby increasing the air supply angle under different operating conditions, expanding the air supply range, and enhancing the adaptability of the air supply structure. Although the channel branches correspond to and are connected to air supply port 4 (i.e., their direction is fixed), the direction and shape of the channel branches can be arbitrary.

[0054] A second aspect of the present invention provides a compressor including the compressor gas supply structure described in any one or more of the foregoing claims. Therefore, the compressor of the present invention can also achieve the beneficial effects achievable by the aforementioned compressor gas supply mechanisms.

[0055] The specific effects of the present invention will be illustrated below with specific embodiments.

[0056] Table 1: Gas replenishment effect of the compressor gas replenishment structure of the present invention under different pressures

[0057]

[0058] Table 2: Comparison of the effects of the compressor gas replenishment structure of the present invention with the gas replenishment structure of the prior art

[0059]

[0060] In Table 1, the gas injection end angle refers to the angle at which gas injection begins when the system flash evaporator pressure is greater than the compression chamber pressure. Low pressure is the system intake pressure, high pressure is the system exhaust pressure, and gas injection pressure is the system flash evaporator pressure.

[0061] In Table 2, the capacity refers to the system's cooling capacity.

[0062] By comparison, it can be seen that, compared with the conventional air replenishment structure, the compressor with the air replenishment structure of the present invention has no change in energy efficiency, while the closing angle of the compressor air replenishment port is increased from the original 170° to 210°. As the air replenishment pressure is different under different operating conditions, as shown in Table 1, the opening of the plunger of different channels can be controlled according to the difference in air replenishment pressure to achieve optimal air replenishment under different operating conditions.

[0063] As shown in Table 2, actual tests show that under low-temperature heating conditions, the compressor gas injection structure of the present invention can improve the system capacity of the compressor by 10.2%, while having virtually no impact on other operating conditions.

[0064] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Words such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Words such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. In the description of this invention, the terms “vertical,” etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, the relative positional relationship may also change accordingly, and therefore should not be construed as a limitation of the invention.

[0065] Therefore, those skilled in the art should recognize that although the present invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A compressor air injection structure, characterized by, The structure body is provided with a gas supplement channel, and a plurality of channel branches are arranged on the gas supplement channel, each of the channel branches being communicated with a gas supplement port; The compressor gas supplement structure further comprises a one-way flow component, which allows the gas supplement source to supplement the compression cavity of the compressor when supplementing gas, and closes the gas supplement channel when stopping supplementing gas; The one-way flow component comprises a plunger and a spring, the plunger comprises a plunger body, one end of the plunger body extends outward to form an extension, the extension is provided with a first groove, the first groove is communicated with the gas supplement port, the other end of the plunger body is provided with a second groove, the second groove is communicated with the channel branch, part of the spring is arranged in the second groove, and the spring can push the plunger into the gas supplement port when stopping supplementing gas; The one-way flow component further comprises a one-way valve, a through hole communicated with the gas supplement channel is arranged on the groove wall of the first groove, the through hole is closed by the one-way valve, and the one-way valve is arranged on the inner wall of the second groove.

2. The compressor air injection structure of claim 1, wherein The one-way flow component is arranged in the channel branch.

3. The compressor air injection structure of claim 2, wherein The structure body comprises a flange and a bottom plate, the flange and the bottom plate are fixedly connected, the gas supplement channel and the channel branch are arranged on the side of the flange and the bottom plate in contact, and the gas supplement port is arranged on the bottom plate and corresponds to the channel branch.

4. The compressor bleed air structure of Claim 1, wherein, The extension is in clearance fit with the gas supplement port.

5. The compressor air injection structure of claim 4, wherein The diameter of the extension is smaller than the diameter of the plunger body.

6. The compressor air injection structure of claim 4, wherein The distribution of the gas supplement channel is determined by the system of the compressor, and the channel branch corresponds to the gas supplement port.

7. A compressor characterized by, The compressor gas supplement structure comprises any one of claims 1-6.

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