Flange for positive displacement rotary pump, positive displacement rotary pump and fluorine pump compressor system

Abstract

The invention discloses a flange for a positive displacement rotary pump, the positive displacement rotary pump and a fluorine pump compressor system.The flange for the positive displacement rotary pump comprises a flange body, the flange body is provided with a shaft sleeve, and an arc-shaped liquid outlet is formed in the position, close to the shaft sleeve, of the flange body; the liquid outlet extends along the periphery of the shaft sleeve, and the width of the liquid outlet is increased from one end of the liquid outlet to the other end of the liquid outlet. According to the positive displacement rotary pump, the newly-designed liquid outlet structure is adopted, the size of the liquid outlet is relatively large, liquid discharging resistance is small, breakage of the valve plate and the valve plate baffle can be effectively avoided, and normal use and stable operation of the positive displacement rotary pump are guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of air conditioning systems, in particular to a flange for a positive displacement rotary pump, a positive displacement rotary pump and a fluorine pump compressor system. BACKGROUND

[0002] In a data center or a communication room, an air conditioning system needs to run in all seasons throughout the year. When the ambient temperature is lower than the indoor temperature, the outdoor cold source can be fully utilized to achieve energy saving and emission reduction. Therefore, various types of fluorine pumps are needed to stabilize the temperature in the data center or the communication room.

[0003] At present, the pump for pumping liquid refrigerant of the fluorine pump compressor system (air conditioning system) is mainly a gear pump or a centrifugal pump. However, the manufacturing cost of the two pumps is high, and the overall efficiency is low, which has restricted the use and application of the fluorine pump compressor system. In order to solve this problem, some fluorine pump compressor systems use a positive displacement rotary pump to replace the gear pump and the centrifugal pump. In this way, the cost can be reduced and the overall efficiency can be improved. However, since the flange body 10 of the positive displacement rotary pump is designed with an exhaust port structure, as shown in the flange body 10 of the positive displacement rotary pump shown in Figure 1 and Figure 2 The exhaust port of the flange body 10 is designed as a circular hole. The exhaust port of the flange body 10 is used as a liquid discharge port 12. When the pump is running with liquid, the size of the liquid discharge port 12 is limited, the liquid discharge resistance is large, the valve piece and the valve piece baffle arranged at the liquid discharge port 12 are easy to break, which affects the use of the positive displacement rotary pump, and reduces the energy efficiency and reliability of the fluorine pump compressor system. Therefore, the application prospect of the positive displacement rotary pump in the fluorine pump compressor system is limited. SUMMARY

[0004] The application aims to provide a flange for a positive displacement rotary pump, a positive displacement rotary pump and a fluorine pump compressor system. The flange for the positive displacement rotary pump adopts a newly designed liquid discharge port structure. The size of the liquid discharge port structure is relatively large, the liquid discharge resistance is small, the breaking of the valve piece and the valve piece baffle can be effectively avoided, and the normal use and stable operation of the positive displacement rotary pump can be ensured.

[0005] In order to achieve the above-mentioned purpose, in a first aspect, the application provides a flange for a positive displacement rotary pump, which comprises a flange body. The flange body has a shaft sleeve. An arc-shaped liquid discharge port is arranged on the flange body near the shaft sleeve. The liquid discharge port extends along the outer periphery of the shaft sleeve, and the width of the liquid discharge port increases from one end of the liquid discharge port to the other end of the liquid discharge port.

[0006] In the implementation process of the above technical solution, the flange for the positive displacement rotary pump adopts a newly designed drain port structure, an arc-shaped drain port is formed at a position close to the shaft sleeve of the flange body, and the width of the drain port increases from one end of the drain port to the other end of the drain port. In this way, not only the size of the drain port is increased, but also the drain angle is increased, so that the newly designed drain port has a relatively large size compared with the size of the previous drain port, thereby greatly reducing the drain resistance. In this way, the rupture of the valve plate and the valve plate baffle on the flange of the positive displacement rotary pump during use can be effectively avoided, and the normal use and stable operation of the positive displacement rotary pump can be ensured.

[0007] In the preferred embodiment of the present application, the width of the drain port gradually increases from one end of the drain port to the other end of the drain port, and the drain port is in the shape of a crescent.

[0008] In the implementation process of the above technical solution, the drain port adopts a structure design in which the width gradually increases from one end of the drain port to the other end of the drain port. Not only can the size of the drain port be increased, but the gradually increasing design can also improve the smoothness of drainage, so that the drain port has better drainage effect, and the drain resistance becomes smaller.

[0009] In the preferred embodiment of the present application, the drain port includes a plurality of sub-drain holes,

[0010] The plurality of sub-drain holes are arranged along the outer periphery of the shaft sleeve, the widths of the plurality of sub-drain holes gradually increase, and adjacent sub-drain holes are connected through grooves.

[0011] In the implementation process of the above technical solution, the drain port adopts a structure design in which a plurality of sub-drain holes are arranged along the outer periphery of the shaft sleeve, the widths of the plurality of sub-drain holes gradually increase, and adjacent sub-drain holes are connected through grooves. Not only can the size of the drain port be increased, but the structure design can also facilitate the opening and processing of the drain port, reduce the processing difficulty of the drain port, and improve the processing efficiency and quality of the drain port.

[0012] In the preferred embodiment of the present application, the drain port includes a plurality of sub-drain holes,

[0013] The plurality of sub-drain holes are arranged along the outer periphery of the shaft sleeve, the widths of the plurality of sub-drain holes gradually increase, and adjacent sub-drain holes are connected through grooves.

[0014] In the implementation process of the above technical solution, the drain port adopts a structure design in which a plurality of sub-drain holes are arranged along the outer periphery of the shaft sleeve, the widths of the plurality of sub-drain holes gradually increase, and adjacent sub-drain holes are connected through grooves. Not only can the size of the drain port be increased, but the structure design can also facilitate the opening and processing of the drain port, reduce the processing difficulty of the drain port, and improve the processing efficiency and quality of the drain port.

[0015] In the preferred embodiment of the present application, the included angle a between the line connecting one end of the drain port and the center of the flange body and the line connecting the other end of the drain port and the center of the flange body is less than 80°.

[0016] In the implementation process of the above technical solution, the drain angle a of the drain port is less than 80°, which avoids too large drain angle of the drain port and also ensures that the drain port has a better drain angle, ensuring the smoothness and effect of the drain port.

[0017] In the preferred embodiment of the present application, the cross-sectional area of the drain port is S, and the ratio S / a of the cross-sectional area S of the drain port to the included angle a is [0.8, 1.5];

[0018] The unit of the cross-sectional area S of the drain port is mm 2 .

[0019] In the implementation process of the above technical solution, the ratio S / a of the cross-sectional area S of the drain port to the drain angle a of the drain port is between [0.8, 1.5], which can make the drain port have better drain effect and drain efficiency, and thus the fluorine pump compressor system can have higher energy efficiency.

[0020] In the preferred embodiment of the present application, the cross-sectional area of the drain port is S, and the displacement of the drain port is V, and the ratio S / a*sqrt(V) is [2, 4.3];

[0021] The unit of the cross-sectional area S of the drain port is mm 2 , and the unit of the displacement V of the drain port is cm 3 .

[0022] In the implementation process of the above technical solution, the relationship between the cross-sectional area S of the drain port, the drain angle a of the drain port and the displacement V of the drain port is limited to the ratio S / a*sqrt(V) between [2, 4.3], which can make the drain port have better drain effect and drain efficiency, and thus the fluorine pump compressor system can have higher energy efficiency.

[0023] In the preferred embodiment of the present application, the width of the drain port increases from one end of the drain port to the other end of the drain port and increases along the clockwise direction of the outer periphery of the shaft sleeve.

[0024] In the implementation process of the above technical solution, the width of the drain port increases along the clockwise direction of the outer periphery of the shaft sleeve, which is more consistent with the flow mode and flow direction of the liquid discharged by the positive displacement rotary pump during use, and can make the drain port have better drain effect and drain efficiency.

[0025] In a second aspect, the application provides a flange for a rotary positive displacement pump.

[0026] In a third aspect, the application provides a fluorine pump compressor system, comprising the rotary positive displacement pump.

[0027] The flange for a rotary positive displacement pump, the rotary positive displacement pump and the fluorine pump compressor system of the application have at least the following beneficial effects compared with the prior art:

[0028] The flange for a rotary positive displacement pump of the application comprises a flange body, the flange body has a shaft sleeve, the flange body is provided with an arc-shaped liquid discharge port at a position close to the shaft sleeve, the liquid discharge port extends along the outer periphery of the shaft sleeve, and the width of the liquid discharge port increases from one end of the liquid discharge port to the other end of the liquid discharge port. In this way, not only the size of the liquid discharge port is increased, but also the liquid discharge angle is increased. The newly designed liquid discharge port has a relatively large size compared with the liquid discharge port of the prior art, which can greatly reduce the liquid discharge resistance. In this way, the rupture of the valve plate and the valve plate baffle on the flange of the rotary positive displacement pump during use can be effectively avoided, and the normal use and stable operation of the rotary positive displacement pump can be ensured.

[0029] The rotary positive displacement pump of the application adopts the flange for a rotary positive displacement pump described above, so that the liquid discharge port has a large size and a large liquid discharge angle. In this way, the liquid discharge resistance can be greatly reduced, the rupture of the valve plate and the valve plate baffle on the flange of the rotary positive displacement pump during use can be effectively avoided, the normal use and stable operation of the rotary positive displacement pump can be ensured, and the rotary positive displacement pump has a better application prospect and application effect in the fluorine pump compressor system.

[0030] The fluorine pump compressor system of the application adopts the rotary positive displacement pump described above. The liquid discharge port of the flange of the rotary positive displacement pump has a large size and a large liquid discharge angle. In this way, the liquid discharge resistance can be greatly reduced, the rupture of the valve plate and the valve plate baffle on the flange of the rotary positive displacement pump during use can be effectively avoided, the normal use and stable operation of the rotary positive displacement pump can be ensured, and the power during operation of the fluorine pump compressor system can be reduced, thereby effectively improving the energy efficiency and reliability of the fluorine pump compressor system. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments of the application. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0032] Figure 1is a perspective structural schematic diagram of a flange body of a volumetric rotary pump in the prior art;

[0033] Figure 2 is a front structural schematic diagram of a flange body of a volumetric rotary pump in the prior art;

[0034] Figure 3 is a perspective structural schematic diagram of a flange for a volumetric rotary pump provided by an embodiment of the present application;

[0035] Figure 4 is one of front structural schematic diagrams of a flange for a volumetric rotary pump provided by an embodiment of the present application;

[0036] Figure 5 is one of front structural schematic diagrams of a flange for a volumetric rotary pump provided by an embodiment of the present application, which is marked with a drainage angle;

[0037] Figure 6 is another of front structural schematic diagrams of a flange for a volumetric rotary pump provided by an embodiment of the present application;

[0038] Figure 7 is another of front structural schematic diagrams of a flange for a volumetric rotary pump provided by an embodiment of the present application, which is marked with a drainage angle;

[0039] Figure 8 is a third of front structural schematic diagrams of a flange for a volumetric rotary pump provided by an embodiment of the present application;

[0040] Figure 9 is a third of front structural schematic diagrams of a flange for a volumetric rotary pump provided by an embodiment of the present application, which is marked with a drainage angle.

[0041] The reference signs: 10, flange body; 11, shaft sleeve; 12, drainage port; 121, sub-drainage hole; 122, groove. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0043] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0044] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0045] In addition, the terms "mount", "set", "provided with", "connected", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or point connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific type and structure can be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0047] At present, the pump for pumping liquid refrigerant in fluorine pump compressor system (air conditioning system) is mainly gear pump and centrifugal pump, but the manufacturing cost of these two pumps is high and the overall efficiency is low, which has restricted the use and application of fluorine pump compressor system. In order to solve this problem, part of the fluorine pump compressor system replaces the gear pump and centrifugal pump with volumetric rotary pump for use, so as to realize the reduction of cost and the improvement of overall efficiency. However, since the flange body 10 of the volumetric rotary pump is designed with the structure of exhaust port, please refer to Figure 1 and Figure 2The flange body 10 of the volumetric rotary pump shown, the exhaust port of the flange body 10 adopts a circular hole type design, and the exhaust port of the flange body 10 is used as a liquid discharge port 12. When operating with liquid, due to the limited size of the liquid discharge port 12, the liquid discharge resistance is large, the valve plate and valve plate baffle arranged at the liquid discharge port 12 are prone to breakage, which affects the use of the volumetric rotary pump, and reduces the energy efficiency and reliability of the fluorine pump compressor system, thereby limiting the application prospect of the volumetric rotary pump in the fluorine pump compressor system.

[0048] In view of the problems in the prior art, the volumetric rotary pump flange, the volumetric rotary pump and the fluorine pump compressor system provided by the embodiments of the present application adopt a newly designed liquid discharge port structure. The size of the liquid discharge port is relatively large, the liquid discharge resistance is small, the breakage of the valve plate and the valve plate baffle can be effectively avoided, and the normal use and stable operation of the volumetric rotary pump can be ensured.

[0049] Embodiment one

[0050] Referring to Figures 3 to 5 The volumetric rotary pump flange of the embodiments of the present application comprises a flange body 10, the flange body 10 has a shaft sleeve 11, the flange body 10 is provided with an arc-shaped liquid discharge port 12 at a position close to the shaft sleeve 11, the liquid discharge port 12 extends along the outer periphery of the shaft sleeve 11, and the width of the liquid discharge port 12 increases from one end of the liquid discharge port 12 to the other end of the liquid discharge port 12.

[0051] In this embodiment, the volumetric rotary pump flange can be used for liquid discharge in the volumetric rotary pump.

[0052] In this embodiment, the flange body 10 is provided with an arc-shaped liquid discharge port 12 at a position close to the shaft sleeve 11, and the liquid discharge port 12 extends along the outer periphery of the shaft sleeve 11. Understandably, the flange body 10 is provided with a liquid discharge port 12 with a certain arc on the outer periphery of the shaft sleeve 11, and the arc makes the liquid discharge port 12 have a certain liquid discharge angle compared with the existing liquid discharge port 12. In this embodiment, the liquid discharge port 12 penetrates the position where the liquid discharge port 12 is arranged on the flange body 10.

[0053] In this embodiment, the width of the liquid discharge port 12 increases from one end of the liquid discharge port 12 to the other end of the liquid discharge port 12. Understandably, this only indicates that the width of the other end of the liquid discharge port 12 is larger than the width of one end of the liquid discharge port 12. As for the width between one end of the liquid discharge port 12 and the other end of the liquid discharge port 12, i.e. the middle part, it can have various changes and various different structures or designs.

[0054] The flange for the positive displacement rotary pump of the embodiment of the present application adopts a newly designed drain port 12 structure, an arc-shaped drain port 12 is formed at the position of the flange body 10 close to the shaft sleeve 11, and the width of the drain port 12 increases from one end of the drain port 12 to the other end of the drain port 12. In this way, not only the size of the drain port 12 is increased, but also the drain angle is increased, so that the newly designed drain port 12 is relatively larger in size than the previous drain port 12, thereby greatly reducing the drain resistance. In this way, the rupture of the valve plate and the valve plate baffle on the flange of the positive displacement rotary pump during use can be effectively avoided, and the normal use and stable operation of the positive displacement rotary pump are ensured.

[0055] In the embodiment, the width of the drain port 12 gradually increases from one end of the drain port 12 to the other end of the drain port 12, and the drain port 12 is in a crescent shape.

[0056] Understandably, the width of the drain port 12 gradually increases from one end of the drain port 12 to the other end of the drain port 12, that is, the width of the drain port 12 increases from one end of the drain port 12 to the other end of the drain port 12.

[0057] In the above structure, the drain port 12 adopts a structure design in which the width gradually increases from one end of the drain port 12 to the other end of the drain port 12. Not only can the size of the drain port 12 be increased, but also the gradually increasing design can improve the smoothness of the drainage, so that the drain port 12 has better drainage effect, and the drainage resistance becomes smaller.

[0058] Further, in the embodiment, the width of the drain port 12 increases from one end of the drain port 12 to the other end of the drain port 12, and increases in the clockwise direction along the outer periphery of the shaft sleeve 11.

[0059] In the above structure, the width of the drain port 12 increases in the clockwise direction along the outer periphery of the shaft sleeve 11, which matches the flow mode and direction of the discharged liquid when the positive displacement rotary pump is in use, and can be more in line with the flow mode and direction of the discharged liquid when the positive displacement rotary pump is in use. Increasing the width of the drain port 12 along the flow direction of the discharged liquid is beneficial to the outflow of the discharged liquid, and can make the drain port 12 have better drainage effect and efficiency.

[0060] As a preference, in the embodiment, the included angle a between the line connecting one end of the drain port 12 and the center of the flange body 10 and the line connecting the other end of the drain port 12 and the center of the flange body 10 is less than 80°.

[0061] Understandably, the included angle a between the line connecting one end of the drain port 12 and the center of the flange body 10 and the line connecting the other end of the drain port 12 and the center of the flange body 10 is the drain angle a of the drain port 12.

[0062] Exemplarily, the included angle a between the line connecting one end of the drain port 12 with the center of the flange body 10 and the line connecting the other end of the drain port 12 with the center of the flange body 10 can be 45°, 55°, 60°, 70° or 75°.

[0063] In the above structure, the drain angle a of the drain port 12 is less than 80°, which avoids that the drain angle of the drain port 12 is too large and also ensures that the drain port 12 has a better drain angle and ensures the smoothness and effect of the drain port 12.

[0064] Embodiment Two

[0065] Referring to Figure 6 and Figure 7 On the basis of the above-mentioned embodiment one, the difference between the present embodiment and the embodiment one is that the drain port 12 of the volumetric rotary pump flange in the present embodiment comprises a plurality of sub-drain holes 121,

[0066] The plurality of sub-drain holes 121 are arranged along the outer periphery of the shaft sleeve 11 and the widths of the plurality of sub-drain holes 121 are sequentially increased, and adjacent sub-drain holes 121 are communicated through the grooves 122.

[0067] In the present embodiment, the plurality of sub-drain holes 121 are circular holes, and it can be understood that the widths of the plurality of sub-drain holes 121 are sequentially increased, i.e. the radii of the plurality of sub-drain holes 121 are sequentially increased; in the present embodiment, the number of the sub-drain holes 121 is three, and it can be understood that in other embodiments, the number of the sub-drain holes 121 can also be two or four.

[0068] It should be noted that in other embodiments, the plurality of sub-drain holes 121 can also have other shapes, and preferably, the plurality of sub-drain holes 121 are designed in the same shape; exemplarily, in other embodiments, the plurality of sub-drain holes 121 can all be triangular, square or polygonal hole structures, and when the plurality of sub-drain holes 121 have other shapes, adjacent sub-drain holes 121 are still communicated through the grooves 122.

[0069] As a preference, in the present embodiment, when determining the drain angle a of the drain port 12, the included angle formed by the line connecting the center of the sub-drain hole 121 at one end of the drain port 12 with the center of the flange body 10 and the line connecting the center of the sub-drain hole 121 at the other end of the drain port 12 with the center of the flange body 10 can be determined, and in the present embodiment, the center of the sub-drain hole 121 is the center of the circular hole, and specifically, reference can be made to Figure 7 .

[0070] In the above structure, the liquid discharge port 12 is provided with a plurality of sub-liquid discharge holes 121 along the outer periphery of the shaft sleeve 11, the width of the plurality of sub-liquid discharge holes 121 is gradually increased, and the adjacent sub-liquid discharge holes 121 are communicated through the groove 122. The structure design not only can increase the size of the liquid discharge port 12, but also can facilitate the opening and processing of the liquid discharge port 12 compared with the structure of the liquid discharge port 12 of the first embodiment, reduce the processing difficulty of the liquid discharge port 12, and improve the processing efficiency and processing quality of the liquid discharge port 12.

[0071] Embodiment three

[0072] Referring to Figure 8 and Figure 9 , on the basis of the above-mentioned first embodiment or second embodiment, the difference between the present embodiment and the first embodiment or second embodiment is that the liquid discharge port 12 of the flange for the volumetric rotary pump of the present embodiment comprises a plurality of sub-liquid discharge holes 121,

[0073] The plurality of sub-liquid discharge holes 121 are arranged along the outer periphery of the shaft sleeve 11, the width of the plurality of sub-liquid discharge holes 121 is gradually increased, and the adjacent sub-liquid discharge holes 121 are sequentially connected and communicated.

[0074] In the present embodiment, the plurality of sub-liquid discharge holes 121 are circular holes, and it can be understood that the width of the plurality of sub-liquid discharge holes 121 is gradually increased, i.e. the radius of the plurality of sub-liquid discharge holes 121 is gradually increased; in the present embodiment, there is an intersection between the adjacent sub-liquid discharge holes 121 which are sequentially connected and communicated;

[0075] In the present embodiment, the number of sub-liquid discharge holes 121 is five, and it can be understood that in other embodiments, the number of sub-liquid discharge holes 121 can also be four or six.

[0076] It should be noted that in other embodiments, the plurality of sub-liquid discharge holes 121 can also have other shapes, and preferably, the plurality of sub-liquid discharge holes 121 have the same shape design; for example, in other embodiments, the plurality of sub-liquid discharge holes 121 can all be triangular, square or polygonal hole structures, when the plurality of sub-liquid discharge holes 121 have other shapes, the adjacent sub-liquid discharge holes 121 are still sequentially connected and communicated, and there can be an intersection between the adjacent sub-liquid discharge holes 121.

[0077] As a preferred, in the present embodiment, when determining the liquid discharge angle a of the liquid discharge port 12, the included angle formed by the center line of the sub-liquid discharge hole 121 at one end of the liquid discharge port 12 and the center line of the sub-liquid discharge hole 121 at the other end of the liquid discharge port 12 and the center line of the flange body 10 can be used to determine the liquid discharge angle a of the liquid discharge port 12, in the present embodiment, the center of the sub-liquid discharge hole 121 is the center of the circular hole, and specifically, please refer to Figure 9 .

[0078] In the above structure, the liquid discharge port 12 is provided with a plurality of sub-liquid discharge holes 121 extending along the outer periphery of the shaft sleeve 11, the width of which gradually increases, and the adjacent sub-liquid discharge holes 121 are sequentially connected and communicated. This structure not only increases the size of the liquid discharge port 12, but also improves the smoothness of liquid discharge and facilitates the opening and processing of the liquid discharge port 12, which well balances the smoothness of liquid discharge and the opening and processing of the liquid discharge port 12.

[0079] Embodiment Four

[0080] Referring to Figures 3 to 9 On the basis of any one of the above-mentioned embodiments one to three, the difference between the present embodiment and any one of embodiments one to three is that the flange for the positive displacement rotary pump of the present embodiment further limits the relationship between the cross-sectional area S of the liquid discharge port 12 and the liquid discharge angle a of the liquid discharge port 12, and / or the relationship between the cross-sectional area S of the liquid discharge port 12, the liquid discharge angle a of the liquid discharge port 12 and the displacement V of the liquid discharge port 12.

[0081] In the present embodiment, the cross-sectional area of the liquid discharge port 12 is S, and the ratio S / a of the cross-sectional area S of the liquid discharge port 12 to the included angle a formed by the line connecting one end of the liquid discharge port 12 with the center of the flange body 10 and the line connecting the other end of the liquid discharge port 12 with the center of the flange body 10 is [0.8, 1.5]; wherein the unit of the cross-sectional area S of the liquid discharge port 12 is mm 2 .

[0082] It can be understood that when calculating the ratio S / a, only the corresponding numerical value is calculated, and no unit is added.

[0083] The following data table is obtained by experiment on the ratio S / a of the cross-sectional area S of the liquid discharge port 12 to the liquid discharge angle a of the liquid discharge port 12 for different values, and the corresponding energy efficiency of the fluorine pump compressor system when applied to the fluorine pump compressor system.

[0084]

[0085] In the above design, according to the above data table, the ratio S / a of the cross-sectional area S of the liquid discharge port 12 to the liquid discharge angle a of the liquid discharge port 12 is between [0.8, 1.5], which can make the liquid discharge port 12 have better liquid discharge effect and efficiency, and thus the fluorine pump compressor system has higher energy efficiency.

[0086] Further, in the present embodiment, the cross-sectional area of the liquid discharge port 12 is S, the displacement of the liquid discharge port 12 is V, and the ratio S / a*sqrt(V) is [2, 4.3];

[0087] Wherein, the area S of the cross section of the liquid discharge port 12 is in mm 2 , the displacement V of the liquid discharge port 12 is in cm 3 .

[0088] In this embodiment, it can be understood that sqrt(V) means taking the square root of the displacement V of the liquid discharge port 12, and sqrt is the abbreviation of square root in English in mathematical calculation.

[0089] It can be understood that when calculating the ratio of S / a*sqrt(V), only the corresponding numerical value is calculated, and no corresponding unit is calculated.

[0090] The following data table is the ratio of S / a*sqrt(V) for different values of S / a*sqrt(V) obtained through experiments, and the corresponding energy efficiency of the fluorine pump compressor system when applied to the fluorine pump compressor system.

[0091]

[0092] In the above design, it can be known from the above data table that when the ratio of S / a*sqrt(V) is between 2 and 4.3, the area S of the cross section of the liquid discharge port 12, the discharge angle a of the liquid discharge port 12, and the displacement V of the liquid discharge port 12 can be limited to the ratio of S / a*sqrt(V) between 2 and 4.3, so that the liquid discharge port 12 has better liquid discharge effect and liquid discharge efficiency, and thus the fluorine pump compressor system has higher energy efficiency. When the ratio of S / a*sqrt(V) is about 4.00, the energy efficiency of the fluorine pump compressor system is the highest.

[0093] Example five

[0094] Referring to Figures 3 to 9 , the present application provides a positive displacement rotary pump, which comprises the flange for the positive displacement rotary pump of any one of the above-mentioned embodiments one to four.

[0095] In this embodiment, the positive displacement rotary pump is applied to a fluorine pump compressor system, which can be applied to data centers or communication machine rooms and the like.

[0096] The positive displacement rotary pump of the present application adopts the flange for the positive displacement rotary pump of any one of the above-mentioned embodiments one to four, so that the liquid discharge port 12 has a larger size and a larger discharge angle, which can greatly reduce the liquid discharge resistance, effectively avoid the fracture of the valve piece and the valve piece baffle on the flange of the positive displacement rotary pump during use, ensure the normal use and stable operation of the positive displacement rotary pump, and make the positive displacement rotary pump have better application prospects and application effects in the fluorine pump compressor system.

[0097] Example six

[0098] Referring to Figures 3 to 9 The embodiment of the present application provides a fluorine pump compressor system, comprising the positive displacement rotary pump in the above-mentioned embodiment five.

[0099] In the embodiment, the fluorine pump compressor system can be applied to a data center or a communication machine room.

[0100] The fluorine pump compressor system in the embodiment of the present application adopts the positive displacement rotary pump in the above-mentioned embodiment five. The drain port 12 of the flange of the positive displacement rotary pump has a large size and a large drain angle. Thus, the drain resistance can be greatly reduced, the fracture of the valve piece and the valve piece baffle on the flange of the positive displacement rotary pump during use can be effectively avoided, the normal use and stable operation of the positive displacement rotary pump are ensured, and the power during operation of the fluorine pump compressor system can be reduced, thereby effectively improving the energy efficiency and reliability of the fluorine pump compressor system.

[0101] In all the above-mentioned embodiments, "large", "small", "more", "less", "upper", and "lower" are relative, and the description of such relative terms will not be repeated in the embodiment of the present application.

[0102] It should be understood that the expressions "in one embodiment", "in the embodiment", "in the embodiment of the present application", or "as an optional implementation" mentioned throughout the specification mean that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment", "in the embodiment", "in the embodiment of the present application", or "as an optional implementation" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also know that the embodiments described in the specification are optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0103] In various embodiments of the present application, it should be understood that the size of the serial number of the above-mentioned processes does not mean the inevitable sequence of execution, and the execution sequence of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0104] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A flange for a positive displacement rotary pump, characterized in that, The flange includes a flange body with a bushing. The flange body has an arc-shaped drain port near the bushing. The drain port extends along the outer periphery of the bushing, and the width of the drain port increases from one end to the other end.

2. The flange for a positive displacement rotary pump according to claim 1, characterized in that, The width of the drain opening gradually increases from one end to the other end, and the drain opening is crescent-shaped.

3. The flange for a positive displacement rotary pump according to claim 1, characterized in that, The drain outlet includes multiple sub-drain holes. Multiple sub-drainage holes are spaced apart along the outer circumference of the bushing, and the width of the multiple sub-drainage holes increases sequentially. Adjacent sub-drainage holes are connected by grooves.

4. The flange for a positive displacement rotary pump according to claim 1, characterized in that, The drain outlet includes multiple sub-drain holes. Multiple sub-drainage holes extend along the outer periphery of the bushing, the width of the multiple sub-drainage holes increases sequentially, and adjacent sub-drainage holes are connected in sequence.

5. The flange for a positive displacement rotary pump according to claim 1, characterized in that, The angle α formed by the line connecting one end of the drain port to the center of the flange body and the line connecting the other end of the drain port to the center of the flange body is less than 80°.

6. The flange for a positive displacement rotary pump according to claim 5, characterized in that, The cross-sectional area of ​​the drain outlet is S, and the ratio of the cross-sectional area S of the drain outlet to the included angle α, S / α, is [0.8, 1.5]. The area S of the cross-section of the drain outlet is in mm². 2 .

7. The flange for a positive displacement rotary pump according to claim 5 or 6, characterized in that, The cross-sectional area of ​​the drain outlet is S, the discharge capacity of the drain outlet is V, and the ratio of S / a*sqrt(V) is [2, 4.3]. The area S of the cross-section of the drain outlet is in mm². 2 The discharge capacity V of the drain outlet is in cm. 3 .

8. The flange for a positive displacement rotary pump according to any one of claims 1-4, characterized in that, The width of the drain port increases from one end to the other end, and increases clockwise along the outer circumference of the bushing.

9. A positive displacement rotary pump, characterized in that, Including the flange for a positive displacement rotary pump as described in any one of claims 1-8.

10. A fluorine pump compressor system, characterized in that, Including the positive displacement rotary pump as described in claim 9.

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