Compressor static scroll structure and scroll compressor

Abstract

The present invention provides a compressor static scroll structure and a scroll compressor. The compressor static scroll structure includes: an enthalpy-increasing air supply chamber for connecting to an enthalpy-increasing component; a first air supply channel connecting the enthalpy-increasing air supply chamber and the medium-pressure area of ​​the compression chamber of the static scroll structure; a first check member is provided in the first air supply channel, and the first check member allows the first air supply channel to be opened only in the direction of flow toward the compression chamber; a second air supply channel connecting the enthalpy-increasing air supply chamber and the high-pressure area of ​​the compression chamber of the static scroll structure; a second check member is provided in the second air supply channel, and the second check member allows the second air supply channel to be opened only in the direction of flow toward the compression chamber. The present invention diversifies the enthalpy-increasing air supply methods of the scroll compressor to meet the enthalpy-increasing air supply requirements of the compressor under different working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor static scroll structure and a scroll compressor. Background Art

[0002] The enthalpy-increasing structures of scroll compressors in the existing technology are all directly inserted into the parts where air replenishment is required, so that the compressor can reduce clearance loss and increase compressor efficiency. However, the air replenishment method is too single and can only be applied to air replenishment under certain working conditions. When the compressor corresponds to different working conditions, the required air replenishment amount will show obvious differences, which reduces the air replenishment effect. Single air replenishment cannot achieve the compressor enthalpy-increasing effect under multiple working conditions. Summary of the Invention

[0003] In view of this, the present invention provides a compressor fixed scroll structure and a scroll compressor, which are used to at least solve the technical problem of the single enthalpy increase and air supply method in the prior art. Specifically:

[0004] In a first aspect, the present invention provides a compressor fixed scroll structure, comprising:

[0005] Increase enthalpy and replenish gas cavity;

[0006] a first air supply passage, for connecting the enthalpy-increasing air supply chamber to the medium-pressure region of the compression chamber of the fixed scroll structure; a first check member is provided in the first air supply passage, the first check member allowing the first air supply passage to flow only in the direction of the compression chamber;

[0007] The second air supply channel is used to connect the enthalpy-increasing air supply chamber and the high-pressure area of ​​the compression chamber of the static scroll structure. A second check piece is provided in the second air supply channel, and the second check piece makes the second air supply channel only open in the direction of the compression chamber.

[0008] Further optionally, the first air supplement channel includes a first main channel, a medium-pressure communication port is formed on a wall of the first main channel, and the medium-pressure communication port is connected to the medium-pressure area;

[0009] When the first check member slides to the first position, the medium-pressure communication port is blocked. When the first check member is in the second position, the medium-pressure communication port is communicated with the first main channel.

[0010] Further optionally, a first elastic member is provided in the first main channel, and when the first check member is located in the second position, the first elastic member applies an elastic force to the first check member, and the first check member can slide from the second position to the second position under the action of the elastic force.

[0011] Further optionally, the first air supplement channel further includes a high-pressure communication port communicating with the high-pressure area, and the high-pressure communication port is communicated with the first main channel.

[0012] The high-pressure communication port allows the high-pressure gas in the high-pressure area to enter the first main channel, and pushes the first check member to move from the second position to the first position.

[0013] Further optionally, the first check member is constructed as a slider structure, and its side wall is in contact with the inner wall of the first main channel.

[0014] A limiting structure is provided in the first main channel, and when the first check member slides from the second position to the first position, the limiting structure limits the first check member.

[0015] Further optionally, an avoidance structure is formed at the end of the first check member located on the side close to the second position, and the avoidance structure enables the high-pressure connecting port to communicate with the first main channel when the first check member is located in the second position.

[0016] Further optionally, the second air supply channel includes a second main channel and a high-pressure communication channel that are interconnected, the second main channel is connected to the enthalpy-increasing air supply cavity, and the high-pressure communication channel is connected to the high-pressure area and the second main channel;

[0017] The second check member is provided at the intersection of the second main channel and the high-pressure communication channel, and the second check member includes a sliding plate slidably provided in the second main channel.

[0018] When the second check member slides to the first position, the high-pressure communication channel is disconnected from the second main channel; when the second check member slides to the second position, the high-pressure communication channel is connected to the second main channel;

[0019] The second anti-return member further includes a second elastic member, and the second elastic member applies an elastic force to the sliding plate to slide the sliding plate from the second position to the first position.

[0020] Further optionally, a third check piece is further provided in the second main channel, and the third check piece is provided at a position close to the enthalpy-increasing air-supplementing cavity.

[0021] Further optionally, the third check member includes a plurality of blocking components provided on the inner wall of the second main channel, and the blocking components include a blocking block and a third elastic member.

[0022] A plurality of mounting grooves are provided on the inner wall of the second main channel along its circumference, a third elastic member is embedded in the mounting, a portion of the blocking block extends into the mounting groove, and under the action of the third elastic member, a plurality of the blocking blocks extend into the second main channel, and the portions of the blocking blocks extending into the second main channel form a mating surface, and a sealing contact is formed between the mating surfaces of the plurality of blocking blocks to separate the second main channel.

[0023] In a second aspect, the present invention provides a scroll compressor comprising the above-mentioned compressor fixed scroll structure.

[0024] The present invention, by providing two air supply channels simultaneously, can meet the compressor's enthalpy increase and air supply requirements under different operating conditions. Furthermore, check members are provided in both air supply channels to prevent the compressor from reversing. Furthermore, the present invention has a simple structure and can be installed in a relatively small space, making it suitable for various usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings. The drawings described below are only some embodiments of the present disclosure, and it is obvious to those skilled in the art that other drawings can be derived from these drawings without inventive effort.

[0026] Figure 1 A schematic diagram of the top surface structure of the fixed scroll structure according to an embodiment of the present invention is shown;

[0027] Figure 2 A schematic cross-sectional view showing the structure of the fixed scroll according to an embodiment of the present invention;

[0028] Figure 3 A schematic cross-sectional view showing a first check member according to an embodiment of the present invention;

[0029] Figure 4 A schematic structural diagram of a first non-return member according to an embodiment of the present invention is shown;

[0030] Figure 5 A schematic structural diagram of a second anti-return member according to an embodiment of the present invention is shown;

[0031] Figure 6 A schematic cross-sectional view showing a plugging block according to an embodiment of the present invention;

[0032] Figure 7 A schematic diagram showing a static scroll structure in a non-air-supplementing state according to an embodiment of the present invention;

[0033] Figure 8 A schematic diagram showing the air supply state of the first air supply channel of the fixed scroll structure according to an embodiment of the present invention is shown;

[0034] Figure 9A schematic diagram showing the air supply state of the second air supply channel of the fixed scroll structure according to an embodiment of the present invention is shown.

[0035] In the picture:

[0036] 1. Static vortex structure; 101. Enthalpy-increasing air supply port; 102. Air intake port; 103. Exhaust port; 104. Medium-pressure area; 105. High-pressure area; 11. Enthalpy-increasing air supply chamber; 121. First main channel; 122. Medium-pressure connecting port; 123. High-pressure connecting port; 124. First check member; 131. Second main channel; 132. High-pressure connecting channel; 133. Second check member; 1331. Sliding vane; 1332. Second elastic member; 134. Third check member; 1341. Blocking block. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0038] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a," "the," and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. "A plurality" generally includes at least two, but does not exclude the inclusion of at least one.

[0039] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0040] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0041] By providing two air supply channels, the present invention can meet the compressor's enthalpy-increasing air supply requirements under different operating conditions. Furthermore, check members are provided in both channels to prevent compressor reversal. Furthermore, the present invention has a simple structure, can be installed in a relatively small space, and is adaptable to various usage scenarios. The present invention is described in detail below with reference to specific embodiments.

[0042] like Figure 1 、 Figure 2 As shown, the present invention provides a compressor fixed scroll structure, including an intake port 102 and an exhaust port 103 provided on the top surface of the fixed scroll structure 1. The intake port 102 and the exhaust port 103 are connected to the intake chamber and the compression chamber, respectively. The fixed scroll structure 1 of the present invention also includes: an enthalpy-increasing air supply chamber 11 for connecting to an enthalpy-increasing component. A blind hole is provided downwardly on the top surface of the fixed scroll structure 1. The blind hole is located near the edge of the top surface of the fixed scroll. The interior space of the blind hole constitutes the enthalpy-increasing air supply chamber 11. An enthalpy-increasing air supply port 101 is formed on the top surface of the fixed scroll structure 1. The enthalpy-increasing air supply chamber 11 is connected to the enthalpy-increasing component through the enthalpy-increasing air supply port 101.

[0043] The fixed scroll structure 1 further includes a first air supply passage connecting the enthalpy-increasing air supply chamber 11 and the intermediate-pressure region 104 of the compression chamber of the fixed scroll structure 1. A first check member 124 is provided in the first air supply passage to prevent the first air supply passage from flowing only in the direction toward the compression chamber.

[0044] The second air supply channel connects the enthalpy-increasing air supply chamber 11 and the high-pressure area 105 of the compression chamber of the static scroll structure 1. A second check piece 133 is provided in the second air supply channel. The second check piece 133 allows the second air supply channel to be conducted only in the direction of flowing toward the compression chamber.

[0045] Preferably, the first air supply channel includes a first main channel 121 and a medium-pressure connecting port 122. The first main connecting channel is parallel to the top surface of the static scroll structure 1 and extends a certain length radially along the static scroll. Its first end is connected to the enthalpy-increasing air supply chamber 11, and the second end is a closed end.

[0046] The intermediate-pressure communication port 122 is located on a sidewall of the first main channel 121 and communicates with the first main channel 121. The intermediate-pressure communication port 122 communicates with the radially outer portion of the compression chamber, namely, the intermediate-pressure region 104. There is a certain distance between the intermediate-pressure communication port 122 and the second end of the first main channel 121, and the intermediate-pressure communication port 122 is preferably disposed perpendicular to the first main channel 121. A first check member 124 is slidably disposed within the first main channel 121. When the first check member 124 slides to a first position, it blocks the intermediate-pressure communication port 122. When the first check member 124 is in a second position, the intermediate-pressure communication port 122 communicates with the first main channel 121. The first position is located near the first end of the first main channel 121, and the second position is located near the second end of the first main channel 121.

[0047] like Figure 3 As shown, preferably, the first check member 124 is constructed as a slider structure, with its sidewalls abutting against the inner wall of the first main channel 121. For example, in this embodiment, the first main channel 121 is constructed as a cylindrical channel, and the first check member 124 is constructed as a cylindrical slider. The sidewalls of the first check member 124 abut against the inner wall of the first main channel 121 and can slide relative to each other. In the first position, the first check member 124 is located at the location of the medium-pressure communication port 122 and blocks the medium-pressure communication port 122. When air is replenished, the high-pressure air flow pushes the first check member 124 toward the second position. When moving to the second position, the first check member 124 is offset from the medium-pressure communication port, opening the medium-pressure communication port 122. Preferably, a limiting structure is provided in the first main channel 121. When the first check member 124 slides from the second position to the first position, the limiting structure limits the first check member 124 so that the first check member 124 cannot continue to move away from the second position. Furthermore, the limiting structure can be a block structure provided in the first main channel 121, such as a limiting block fixedly installed in the first main channel 121.

[0048] In a preferred embodiment, a first elastic member is disposed between the first check member 124 and the end of the first main channel 121 (i.e., the second end of the first main channel 121). When the first check member 124 is in the second position, the first elastic member applies an elastic force to the first check member 124, causing the first check member 124 to slide from the second position to the second position under the action of the elastic force. The first elastic member is preferably a pressure spring. When the first check member 124 is in the second position, the spring compresses. After air replenishment is completed, the spring pushes the first check member 124 back to the first position.

[0049] In another preferred embodiment, the first air supply channel further includes a high-pressure communication port 123 communicating with the high-pressure region 105. High-pressure communication port 123 communicates with the first main channel 121. High-pressure communication port 123 is located near the second end of the first main channel 121 and communicates with the high-pressure region 105 radially inward of the compression chamber. High-pressure communication port 123 allows high-pressure gas within the high-pressure region 105 to enter the first main channel 121 and, upon completion of air supply, pushes the first check member 124 from the second position to the first position.

[0050] In this embodiment, the end of the first check member 124 located near the second position is formed with an avoidance structure, which enables the high-pressure communication port 123 to communicate with the first main channel 121 when the first check member 124 is located in the second position. Figure 4 As shown, preferably, the avoidance structure 1241 can be set on the inclined surface of the end of the first check member 124 or a through groove connected to its end face and side surface. The avoidance structure 1241 enables the high-pressure connecting port 123 to be connected to the first main channel 121 when the first check member 124 is in the second position, so that the high-pressure gas can enter the first main channel 121 and push the first check member 124 to move to the first position.

[0051] Preferably, the second air supply channel includes a second main channel 131 and a high-pressure connecting channel 132 which are arranged perpendicular to each other. The second main channel 131 extends radially along the fixed scroll disk, and its first end is connected to the enthalpy increase air supply chamber 11. The high-pressure connecting channel 132 is connected to the high-pressure area 105 and the second main channel 131. The connection position between the high-pressure connecting channel 132 and the second main channel 131 is located near the second end of the second main channel 131, or is connected to the second end of the second main channel 131.

[0052] The second check member 133 is provided at the intersection of the second main channel 131 and the high pressure communication channel 132. Figure 5 As shown, the second check member 133 includes a sliding plate 1331 slidably disposed within the second main channel 131. When the second check member 133 slides to the first position, the high-pressure communication channel 132 is disconnected from the second main channel 131. When the second check member 133 slides to the second position, the high-pressure communication channel 132 is connected to the second main channel 131. The second check member 133 also includes a second elastic member 1332, which applies an elastic force to the sliding plate 1331, causing the sliding plate 1331 to slide from the second position to the first position, thereby isolating the second main channel 131 from the high-pressure communication channel 132.

[0053] The slide 1331 is constructed as a sheet-like structure with the same shape as the inner wall of the second main channel 131. In the first position, the slide 1331 is located in the second main channel 131 and blocks the second main channel 131. In the second position, the slide 1331 is located at the communication position between the high-pressure connecting channel 132 and the second main channel 131, so that the second main channel 131 is connected with the high-pressure connecting channel 132 and the second main channel 131.

[0054] Preferably, a third check member 134 is further disposed within the second main channel 131. The third check member 134 is positioned near the heat-increasing air supply chamber 11. During air supply, high-pressure air supply causes the third check member 134 to open, allowing air supply to enter the second main channel 131. After air supply is complete, the third check member 134 closes, sealing the second main channel 131 and preventing air flow from the second main channel 131 to the heat-increasing air supply chamber 11. The third check member 134 and the second check member 133 provide dual protection, improving the reliability of the second air supply channel in preventing gas backflow.

[0055] Preferably, the third check member 134 includes a plurality of blocking components arranged on the inner wall of the second main channel 131, and the blocking components include a blocking block 1341 and a third elastic member. A plurality of mounting grooves are arranged on the inner wall of the second main channel 131 along its circumference, and the third elastic member is embedded in the installation, and a part of the blocking block 1341 extends into the mounting groove. Under the action of the third elastic member, the plurality of blocking blocks 1341 extend into the second main channel 131, and the parts of the blocking blocks 1341 extending into the second main channel 131 form a mating surface, and a sealing contact is formed between the mating surfaces of the plurality of blocking blocks 1341 to isolate the second main channel 131.

[0056] Preferably, if Figure 6 As shown, the mating surface of blocking block 1341 forms a conical surface. In this embodiment, four blocking blocks 1341 are provided, spaced 90 degrees apart on the same circumference. These four mating surfaces join to form a sealing surface. Because the mating surfaces are conical, high-pressure airflow acting on them causes the four blocking blocks 1341 to move into their respective mounting slots, thereby separating them and opening the second main channel 131.

[0057] The present invention is applicable to the needs of increasing enthalpy and replenishing air in compressors under different working conditions, such as Figure 7 As shown, when the compressor does not need to supplement air, the first air supplement channel and the second air supplement channel are both closed; Figure 8 As shown in FIG, when the compressor is operating in a light condition and the air supply volume is small, only the first air supply channel is opened, and the second air supply channel is always closed, and air is only supplied to the low-pressure area; Figure 9As shown, when the compressor is in heavy working condition and requires a large amount of air supply, the first air supply channel is opened. At the same time, under the action of a larger pressure, the second air supply channel is also opened, thereby supplying air to the medium-pressure area 104 and the high-pressure area 105 respectively to meet the air supply demand of the compressor.

[0058] The present invention also provides a scroll compressor, including the above-mentioned compressor static scroll plate structure, which adopts different methods to replenish air under different working conditions of the compressor through the static scroll plate structure 1, thereby meeting the needs of increasing enthalpy and replenishing air of the compressor under different working conditions, thereby improving the working efficiency of the compressor and reducing energy efficiency.

[0059] While the exemplary embodiments of the present disclosure have been specifically illustrated and described above, it should be understood that the present disclosure is not limited to the detailed structures, configurations, or implementations described herein; rather, the present disclosure is intended to encompass various modifications and equivalent configurations within the spirit and scope of the appended claims.

Claims

1. A compressor fixed scroll structure, characterized in that: include: An air intake port (102) and an air discharge port (103) are provided on the top surface of the static scroll structure, wherein the air intake port (102) and the air discharge port (103) are respectively connected to the air intake chamber and the compression chamber; Enthalpy-increasing and air-supplementing cavity (11); a first air supply passage for connecting the enthalpy-increasing air supply chamber (11) and the medium-pressure region (104) of the compression chamber of the static scroll structure (1); a first slidable check member (124) being provided in the first air supply passage, the first check member (124) being configured to allow the first air supply passage to be opened only in the direction of the compression chamber; a second air supply passage for connecting the enthalpy-increasing air supply chamber (11) with the high-pressure region (105) of the compression chamber of the static scroll structure (1), wherein a second slidable check member (133) is provided in the second air supply passage, and the second check member (133) is configured to allow the second air supply passage to be conducted only in the direction of the compression chamber; The first air supply channel comprises a first main channel (121), a medium-pressure communication port (122) is formed on a wall of the first main channel (121), and the medium-pressure communication port (122) is communicated with the medium-pressure area (104); when the first check member (124) slides to a first position, the medium-pressure communication port (122) is blocked, and when the first check member (124) is in a second position, the medium-pressure communication port (122) is communicated with the first main channel (121); The first air supply channel further comprises a high-pressure communication port (123) communicating with the high-pressure region (105), wherein the high-pressure communication port (123) is in communication with the first main channel (121). The high-pressure communication port (123) allows the high-pressure gas in the high-pressure region (105) to enter the first main channel (121) and pushes the first check member (124) to move from the second position to the first position.

2. The fixed scroll structure of the compressor according to claim 1, characterized in that: A first elastic member is provided in the first main channel (121); when the first check member (124) is located at the second position, the first elastic member applies an elastic force to the first check member (124); and the first check member (124) can slide from the second position to the first position under the action of the elastic force.

3. The fixed scroll structure of the compressor according to claim 2, characterized in that: The first check member (124) is constructed as a slider structure, and its side wall is in contact with the inner wall of the first main channel (121). A limiting structure is provided in the first main channel (121), and when the first check member (124) slides from the second position to the first position, the limiting structure limits the first check member (124).

4. The fixed scroll structure of the compressor according to claim 3, characterized in that: An avoidance structure is formed at the end of the first check member (124) located close to the second position, and the avoidance structure enables the high-pressure communication port (123) to communicate with the first main channel (121) when the first check member (124) is located at the second position.

5. The fixed scroll structure of the compressor according to any one of claims 1 to 4, characterized in that: The second air supply channel comprises a second main channel (131) and a high-pressure communication channel (132) that are in communication with each other, the second main channel (131) being in communication with the enthalpy-increasing air supply chamber (11), and the high-pressure communication channel (132) being in communication with the high-pressure region (105) and the second main channel (131); The second check member (133) is arranged at the intersection of the second main channel (131) and the high-pressure communication channel (132), and the second check member (133) includes a sliding plate slidably arranged in the second main channel (131). When the second check member (133) slides to the first position, the high-pressure communication channel (132) is disconnected from the second main channel (131); when the second check member (133) slides to the second position, the high-pressure communication channel (132) is connected to the second main channel (131); The second check member (133) further comprises a second elastic member (1332), and the second elastic member (1332) applies an elastic force to the slide, so that the slide slides from the second position to the first position.

6. The fixed scroll structure of the compressor according to claim 5, characterized in that: A third check piece (134) is also provided in the second main channel (131), and the third check piece (134) is arranged at a position close to the enthalpy-increasing air-supplementing cavity (11).

7. The fixed scroll structure of the compressor according to claim 6, characterized in that: The third check member (134) comprises a plurality of blocking components provided on the inner wall of the second main channel (131), wherein the blocking components comprise a blocking block (1341) and a third elastic member. A plurality of mounting grooves are provided on the inner wall of the second main channel (131) along its circumference, a third elastic member is embedded in the mounting groove, a portion of the blocking block (1341) extends into the mounting groove, and under the action of the third elastic member, a plurality of the blocking blocks (1341) extend into the second main channel (131), and the portion of the blocking block (1341) extending into the second main channel (131) forms a mating surface, and a sealing contact is formed between the mating surfaces of the plurality of the blocking blocks (1341) to separate the second main channel (131).

8. A scroll compressor, characterized in that: The invention comprises the compressor fixed scroll structure according to any one of claims 1 to 7.

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