Refrigeration oil circulation structure and system based on worm wheel compressor

Abstract

The invention provides a refrigeration oil circulation structure and system based on a worm wheel compressor, and the refrigeration oil circulation structure based on the worm wheel compressor comprises an oil supply pool, an oil inlet channel, an oil pumping mechanism, an oil storage pool, an oil storage cup and an oil guide pipe; the invention further discloses a refrigerant oil circulation system based on the worm wheel compressor. The refrigerant oil circulation system comprises the worm wheel compressor and the refrigerant oil circulation structure based on the worm wheel compressor. The problems of oil shortage, poor lubrication, abnormal abrasion and the like of the worm gear compressor caused by the fact that excessive refrigerant oil is discharged from the exhaust pipe of the worm gear compressor and enters the cooling and heating system can be avoided, and the reliability of the worm gear compressor and the heat exchange efficiency of the cooling and heating system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of worm gear compressors, and in particular to a refrigeration oil circulation structure and system based on a worm gear compressor. Background Art

[0002] In the prior art, when the worm gear compressor is running, the refrigerant oil will be discharged from the exhaust pipe of the worm gear compressor together with the refrigerant. When excessive refrigerant oil is discharged from the exhaust pipe of the worm gear compressor and enters the cooling and heating system, it will cause problems such as oil shortage, poor lubrication and abnormal wear of the worm gear compressor, thereby reducing the reliability of the worm gear compressor and affecting the heat exchange efficiency of the cooling and heating system.

[0003] Therefore, it is necessary to study and design an oil circuit structure for reducing the oil discharge amount of the scroll compressor. Summary of the invention

[0004] In response to the technical problems raised above, a refrigeration oil circulation structure and system based on a worm compressor is provided.

[0005] The technical means adopted by the present invention are as follows:

[0006] In the first aspect, a refrigeration oil circulation structure based on a worm gear compressor comprises an oil supply tank, an oil inlet passage, an oil pumping mechanism, an oil storage tank, an oil storage cup and an oil guide pipe; the opening of the oil supply tank faces upward, and the gap between the crankshaft of the worm gear compressor and the auxiliary support is set as a first gap, and the opening of the oil supply tank is located directly below the first gap and is connected to the lower end of the first gap; the oil inlet passage is coaxially opened in the crankshaft of the worm gear compressor, and the lower end of the oil inlet passage is connected to the opening of the oil supply tank, and the gap between the crankshaft of the worm gear compressor and the moving worm gear is set as a second gap, and the upper end of the oil inlet passage is connected to the upper end of the second gap; the oil pumping mechanism is installed at the lower end of the oil inlet passage and can pump the oil inlet passage The refrigerant oil at the lower end of the channel is transported to the upper end of the oil inlet channel; the oil storage tank is opened between the main support and the movable worm wheel of the worm gear compressor, the oil storage tank is connected with the lower end of the second gap, the gap between the crankshaft and the main support of the worm gear compressor is set as the third gap, and the oil storage tank is connected with the upper end of the third gap; the oil storage cup is coaxially installed on the crankshaft of the worm gear compressor and is located between the main support and the motor of the worm gear compressor, the opening of the oil storage cup faces upward, the opening of the oil storage cup is located directly below the third gap and is connected with the lower end of the third gap; the upper end of the oil guide pipe is connected with the oil storage cup, and the lower end of the oil guide pipe is connected with the upper end of the oil guide hole of the rotor iron core of the worm gear compressor.

[0007] Furthermore, the oil pumping mechanism is a gear pump, an eccentric pump or an oil stirring plate.

[0008] Furthermore, an oil cup cover is installed on the opening of the oil storage cup; a through hole is opened on the oil cup cover; the third gap is located in the through hole, and the through hole is located between the upper end and the lower end of the third gap.

[0009] Furthermore, it also includes a first transverse hole, a second transverse hole and a third transverse hole, and the first transverse hole, the second transverse hole and the third transverse hole are all opened in the crankshaft of the worm compressor; the two ends of the first transverse hole are respectively connected to the oil inlet channel and the first gap; the two ends of the second transverse hole are respectively connected to the oil inlet channel and the second gap; the two ends of the third transverse hole are respectively connected to the oil inlet channel and the third gap.

[0010] In the second aspect, a refrigeration oil circulation system based on a worm gear compressor includes a worm gear compressor, which includes a shell, a main support, a secondary support, a crankshaft, a movable worm gear, a fixed worm gear, an intake pipe, a motor and an exhaust pipe; the shell is a cylindrical structure with an axis perpendicular to a horizontal plane and openings at both ends; the main support and the secondary support are coaxially mounted in the openings at the upper and lower ends of the shell respectively; the crankshaft is coaxially mounted in the shell, the upper end of the crankshaft is coaxially mounted in the mounting hole of the main support, a third gap is formed between the crankshaft and the main support, the lower end of the crankshaft is coaxially mounted in the mounting hole of the secondary support, and a first gap is formed between the crankshaft and the secondary support; The movable worm gear is coaxially mounted on the crank at the upper end of the crankshaft and is located between the crankshaft and the main support, a second gap is formed between the crankshaft and the movable worm gear, the fixed worm gear is located directly above the movable worm gear and is assembled together with the movable worm gear, a compression chamber is formed between the fixed worm gear and the movable worm gear, the intake pipe is mounted on the fixed worm gear and is connected with the compression chamber; the motor is mounted in the housing and is located between the main support and the auxiliary support, the rotor of the motor is coaxially mounted on the crankshaft, the stator of the motor is coaxially mounted on the inner side wall of the housing, a rotor core oil guide hole is opened in the rotor of the motor, an oil storage chamber is formed between the rotor of the motor and the auxiliary support, the rotor core oil guide hole The lower end and the upper end of the first gap are both connected to the oil storage chamber; an exhaust chamber is formed between the motor and the main support, and the exhaust pipe is installed on the shell and connected to the exhaust chamber; it also includes a refrigeration oil circulation structure based on a worm compressor as described in any one of the first aspects; the opening of the oil supply tank in the refrigeration oil circulation structure based on the worm compressor is located directly below the first gap and is connected to the lower end of the first gap; the oil inlet channel in the refrigeration oil circulation structure based on the worm compressor is coaxially opened in the crankshaft, and the upper and lower ends of the oil inlet channel are respectively connected to the upper end of the second gap and the opening of the oil supply tank; the pump in the refrigeration oil circulation structure based on the worm compressor The oil mechanism is installed at the lower end of the oil inlet channel and can transport the refrigerant oil at the lower end of the oil inlet channel to the upper end of the oil inlet channel; the oil storage tank in the refrigerant oil circulation structure based on the worm compressor is opened between the main support and the moving worm gear, and the lower end of the second gap and the upper end of the third gap are both connected to the oil storage tank; the oil storage cup in the refrigerant oil circulation structure based on the worm compressor is coaxially installed on the crankshaft and located between the main support and the motor, and the opening of the oil storage cup is located directly below the third gap and is connected to the lower end of the third gap; the upper end and lower end of the oil guide pipe in the refrigerant oil circulation structure based on the worm compressor are respectively connected to the oil storage cup and the upper end of the oil guide hole of the rotor core.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. In the present invention, the refrigerant oil in the oil supply pool enters the oil inlet channel through the lower end of the oil inlet channel, the refrigerant oil at the lower end of the oil inlet channel is transported to the upper end of the oil inlet channel under the action of the oil pump mechanism, the refrigerant oil at the upper end of the oil inlet channel enters the oil storage pool through the second gap, the refrigerant oil in the oil storage pool enters the oil storage cup through the third gap, the refrigerant oil in the oil storage cup enters the oil storage cavity through the oil guide pipe and the rotor core oil guide hole in turn, the refrigerant oil in the oil storage cavity flows back to the oil supply pool through the first gap, thereby forming a circulation, so that the present invention can avoid the problems of oil shortage, poor lubrication and abnormal wear of the worm gear compressor caused by excessive refrigerant oil being discharged from the exhaust pipe of the worm gear compressor and entering the cold and hot system, thereby improving the reliability of the worm gear compressor and the heat exchange efficiency of the cold and hot system.

[0013] 2. In the present invention, the oil pump mechanism can adopt any one of a gear pump, an eccentric pump and an oil stirring plate, and can transport the refrigeration oil at the lower end of the oil inlet channel to the upper end of the oil inlet channel.

[0014] 3. In the present invention, the oil cup cover can prevent the refrigerant oil in the oil storage cup from being thrown out of the oil storage cup through the opening of the oil storage cup, thereby ensuring the stability of the refrigerant oil circulation structure based on the worm gear compressor provided by the present invention.

[0015] 4. In the present invention, the refrigerant oil in the oil inlet channel can be input into the first gap, the second gap and the third gap through the first transverse hole, the second transverse hole and the third transverse hole respectively, which can not only lubricate the worm compressor but also ensure the circulation of the refrigerant oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is an overall structural diagram of a refrigeration oil circulation structure and system based on a worm compressor in an embodiment of the utility model when the oil cup cover is installed on a balance block by bolts;

[0018] Figure 2 This is an overall structural diagram of a refrigeration oil circulation structure and system based on a worm compressor in an embodiment of the utility model when the oil cup cover is installed on the bottom surface of the main support by bolts;

[0019] Figure 3 for Figure 1 A schematic diagram of the positions of the first gap, the second gap and the third gap;

[0020] Figure 4 for Figure 2 A schematic diagram of the positions of the first gap, the second gap and the third gap;

[0021] Figure 5 This is the overall structure diagram of the rotor in the embodiment of the utility model;

[0022] In the figure: 1-housing; 2-main support; 3-crankshaft; 4-motor; 5-auxiliary support; 6-rotor core oil guide hole; 7-moving worm gear; 8-fixed worm gear; 9-intake pipe; 10-oil supply tank; 11-first transverse hole; 12-oil inlet channel; 13-oil guide pipe; 14-oil storage cup; 15-oil cup cover; 16-bolt; 17-second transverse hole; 18-oil storage tank; 19-third transverse hole; 20-balance block; 21-oil storage chamber; 22-rivet; 23-rotor lower oil cup; 24-rotor lower balance block; 25-exhaust pipe; 26-oil pumping mechanism; 27-auxiliary support upper oil cup; 28-auxiliary support oil guide hole; 401-rotor; 402-statator. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0029] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] like Figures 1 to 5 As shown, a refrigeration oil circulation structure based on a worm gear compressor includes an oil supply tank 10, an oil inlet channel 12, an oil pumping mechanism 26, an oil storage tank 18, an oil storage cup 14 and an oil guide pipe 13; the opening of the oil supply tank 10 faces upward, and the gap between the crankshaft 3 of the worm gear compressor and the auxiliary support 5 is set as the first gap. The opening of the oil supply tank 10 is located directly below the first gap and is connected to the lower end of the first gap; the oil inlet channel 12 is coaxially opened in the crankshaft 3 of the worm gear compressor, and the lower end of the oil inlet channel 12 is connected to the opening of the oil supply tank 10, and the gap between the crankshaft 3 of the worm gear compressor and the movable worm wheel 7 is set as the second gap, and the upper end of the oil inlet channel 12 is connected to the upper end of the second gap; the oil pumping mechanism 26 is installed at the lower end of the oil inlet channel 12 and can pump the oil inlet The refrigerant oil at the lower end of the channel 12 is transported to the upper end of the oil inlet channel 12; the oil storage tank 18 is opened between the main support 2 and the moving worm wheel 7 of the worm gear compressor, and the oil storage tank 18 is connected to the lower end of the second gap. The gap between the crankshaft 3 and the main support 2 of the worm gear compressor is set as the third gap, and the oil storage tank 18 is connected to the upper end of the third gap; the oil storage cup 14 is coaxially installed on the crankshaft 3 of the worm gear compressor and is located between the main support 2 and the motor 4 of the worm gear compressor, and the opening of the oil storage cup 14 faces upward, and the opening of the oil storage cup 14 is located directly below the third gap and is connected to the lower end of the third gap; the upper end of the oil guide pipe 13 is connected to the oil storage cup 14, and the lower end of the oil guide pipe 13 is connected to the upper end of the oil guide hole 6 of the rotor core of the worm gear compressor.

[0032] In this embodiment, the oil pumping mechanism 26 is a gear pump, an eccentric pump or an oil stirring blade.

[0033] In this embodiment, an oil cup cover 15 is installed on the opening of the oil storage cup 14; a through hole is opened on the oil cup cover 15; the third gap is located in the through hole, and the through hole is located between the upper end and the lower end of the third gap.

[0034] In this embodiment, it also includes a first transverse hole 11, a second transverse hole 17 and a third transverse hole 19, and the first transverse hole 11, the second transverse hole 17 and the third transverse hole 19 are all opened in the crankshaft 3 of the worm compressor; the two ends of the first transverse hole 11 are respectively connected to the oil inlet channel 12 and the first gap; the two ends of the second transverse hole 17 are respectively connected to the oil inlet channel 12 and the second gap; the two ends of the third transverse hole 19 are respectively connected to the oil inlet channel 12 and the third gap.

[0035] Embodiment 2:

[0036] like Figures 1 to 5As shown, a refrigeration oil circulation system based on a worm compressor includes a worm compressor, and the worm compressor includes a shell 1, a main support 2, a secondary support 5, a crankshaft 3, a movable worm wheel 7, a fixed worm wheel 8, an intake pipe 9, a motor 4 and an exhaust pipe 25; the shell 1 is a cylindrical structure with an axis perpendicular to a horizontal plane and openings at both ends; the main support 2 and the secondary support 5 are coaxially mounted in the openings at the upper and lower ends of the shell 1 respectively; the crankshaft 3 is coaxially mounted in the shell 1, the upper end of the crankshaft 3 is coaxially mounted in the mounting hole of the main support 2, a third gap is formed between the crankshaft 3 and the main support 2, the lower end of the crankshaft 3 is coaxially mounted in the mounting hole of the secondary support 5, and a first gap is formed between the crankshaft 3 and the secondary support 5; the movable worm wheel 7 It is coaxially mounted on the crank at the upper end of the crankshaft 3 and is located between the crankshaft 3 and the main support 2. A second gap is formed between the crankshaft 3 and the moving worm gear 7. The fixed worm gear 8 is located directly above the moving worm gear 7 and is assembled together with the moving worm gear 7. A compression chamber is formed between the fixed worm gear 8 and the moving worm gear 7. The intake pipe 9 is mounted on the fixed worm gear 8 and is connected to the compression chamber. The motor 4 is mounted in the housing 1 and is located between the main support 2 and the auxiliary support 5. The rotor 401 of the motor 4 is coaxially mounted on the crankshaft 3. The stator 402 of the motor 4 is coaxially mounted on the inner wall of the housing 1. A rotor core oil guide hole 6 is opened in the rotor 401 of the motor 4. An oil storage chamber 21 is formed between the rotor 401 of the motor 4 and the auxiliary support 5. The lower end of the rotor core oil guide hole 6 and the upper end of the first gap are both connected to the oil storage chamber 21; an exhaust chamber is formed between the motor 4 and the main support 2, and the exhaust pipe 25 is installed on the shell 1 and connected to the exhaust chamber; it also includes a refrigeration oil circulation structure based on a worm compressor as described in any one of Example 1; the opening of the oil supply tank 10 in the refrigeration oil circulation structure based on the worm compressor is located directly below the first gap and is connected to the lower end of the first gap; the oil inlet channel 12 in the refrigeration oil circulation structure based on the worm compressor is coaxially opened in the crankshaft 3, and the upper and lower ends of the oil inlet channel 12 are respectively connected to the upper end of the second gap and the opening of the oil supply tank 10; the pump in the refrigeration oil circulation structure based on the worm compressor The oil mechanism 26 is installed at the lower end of the oil inlet channel 12 and can transport the refrigerant oil at the lower end of the oil inlet channel 12 to the upper end of the oil inlet channel 12; the oil storage tank 18 in the refrigerant oil circulation structure based on the worm compressor is opened between the main support 2 and the movable worm gear 7, and the lower end of the second gap and the upper end of the third gap are both connected to the oil storage tank 18; the oil storage cup 14 in the refrigerant oil circulation structure based on the worm compressor is coaxially installed on the crankshaft 3 and located between the main support 2 and the motor 4, and the opening of the oil storage cup 14 is located directly below the third gap and is connected to the lower end of the third gap; the upper and lower ends of the oil guide pipe 13 in the refrigerant oil circulation structure based on the worm compressor are respectively connected to the oil storage cup 14 and the upper end of the rotor core oil guide hole 6.

[0037] Specifically, a balancing block 20 is coaxially mounted on the crankshaft 3 . The balancing block 20 is located in the oil storage cup 14 and is mounted together with the bottom surface of the oil storage cup 14 via bolts 16 .

[0038] In addition, the oil cup cover 15 can be installed on the balancing block 20 or on the bottom surface of the main support 2 by means of bolts 16 .

[0039] In this embodiment, it also includes a rotor lower oil cup 23, a rotor lower balancing block 24 and an auxiliary support upper oil cup 27; the opening of the rotor lower oil cup 23 faces downward, the top surface of the rotor lower oil cup 23 is mounted on the bottom surface of the rotor 401 by a rivet 22, the rotor lower balancing block 24 is mounted in the rotor lower oil cup 23 by a rivet 22, the bottom surface of the rotor 401 and the top surface of the rotor lower balancing block 24 clamp the top surface of the rotor lower oil cup 23, and a rotor lower oil cup oil guide hole connected to the rotor core oil guide hole 6 is opened on the top surface of the rotor lower oil cup 23; the auxiliary support upper oil cup 2 7 is facing upward, the bottom surface of the auxiliary support upper oil cup 27 is installed on the top surface of the auxiliary support 5 by rivets 22, the opening of the rotor lower oil cup 23 is located in the opening of the auxiliary support upper oil cup 27, the oil storage chamber 21 is formed between the rotor lower oil cup 23 and the auxiliary support upper oil cup 27, the auxiliary support 5 is provided with an auxiliary support oil guide hole 28, the bottom surface of the auxiliary support upper oil cup 27 is provided with an auxiliary support upper oil cup oil guide hole, the upper end of the auxiliary support oil guide hole 28 is connected with the auxiliary support upper oil cup oil guide hole, and the lower end of the auxiliary support oil guide hole 28 is connected with the opening of the oil supply pool 10.

[0040] The working principle of this embodiment:

[0041] First, a sufficient amount of refrigerating oil is stored in the oil supply pool 10; the refrigerating oil in the oil supply pool 10 enters the oil inlet channel 12 through the lower end of the oil inlet channel 12; the refrigerating oil at the lower end of the oil inlet channel 12 is transported to the upper end of the oil inlet channel 12 under the action of the oil pump mechanism 26; the refrigerating oil at the upper end of the oil inlet channel 12 enters the oil storage pool 18 through the second gap; the refrigerating oil in the oil storage pool 18 enters the oil storage cup 14 through the third gap; since the oil storage cup 14 rotates synchronously with the rotor 401 of the motor 4, the oil guide pipe 13 and the rotor core oil guide hole 6 remain relatively stationary, and the refrigerating oil in the oil storage cup 14 passes through the oil pump mechanism 26 in sequence. The oil guide pipe 13 and the rotor core oil guide hole 6 enter the oil storage chamber 21, and the oil cup cover 15 installed on the opening of the oil storage cup 14 can prevent the refrigerant oil in the oil storage cup 14 from being thrown out of the oil storage cup 14 from the opening of the oil storage cup 14; the refrigerant oil in the oil storage chamber 21 flows back to the oil supply pool 10 through the first gap, thereby forming a circulation; this embodiment can avoid the problems of oil shortage, poor lubrication and abnormal wear of the worm gear compressor caused by excessive refrigerant oil being discharged from the exhaust pipe 25 of the worm gear compressor and entering the cold and hot system, thereby improving the reliability of the worm gear compressor and the heat exchange efficiency of the cold and hot system.

[0042] In addition, the refrigerant oil in the oil inlet channel 12 can be input into the first gap through the first transverse hole 11 to lubricate the crankshaft 3 and the auxiliary support 5; the refrigerant oil in the oil inlet channel 12 can be input into the second gap through the second transverse hole 17 to lubricate the crankshaft 3 and the movable worm gear 7; the refrigerant oil in the oil inlet channel 12 can be input into the third gap through the third transverse hole 19 to lubricate the crankshaft 3 and the main support 2; at the same time, the first transverse hole 11, the second transverse hole 17 and the third transverse hole 19 can also ensure the circulation of the refrigerant oil in this embodiment.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A refrigeration oil circulation structure based on a worm compressor, characterized in that: It comprises an oil supply pool (10), an oil inlet channel (12), an oil pumping mechanism (26), an oil storage pool (18), an oil storage cup (14) and an oil guide pipe (13); The opening of the oil supply pool (10) faces upward, the gap between the crankshaft (3) of the worm compressor and the auxiliary support (5) is set as the first gap, and the opening of the oil supply pool (10) is located directly below the first gap and is connected to the lower end of the first gap; The oil inlet passage (12) is coaxially opened in the crankshaft (3) of the worm compressor, the lower end of the oil inlet passage (12) is communicated with the opening of the oil supply pool (10), the gap between the crankshaft (3) of the worm compressor and the movable worm wheel (7) is set as the second gap, and the upper end of the oil inlet passage (12) is communicated with the upper end of the second gap; The oil pump mechanism (26) is installed at the lower end of the oil inlet passage (12) and can transport the refrigeration oil at the lower end of the oil inlet passage (12) to the upper end of the oil inlet passage (12); The oil reservoir (18) is disposed between the main support (2) and the movable worm wheel (7) of the worm compressor, the oil reservoir (18) is connected to the lower end of the second gap, the gap between the crankshaft (3) and the main support (2) of the worm compressor is set as the third gap, and the oil reservoir (18) is connected to the upper end of the third gap; The oil storage cup (14) is coaxially mounted on the crankshaft (3) of the worm compressor and is located between the main support (2) and the motor (4) of the worm compressor, the opening of the oil storage cup (14) faces upward, and the opening of the oil storage cup (14) is located directly below the third gap and is in communication with the lower end of the third gap; The upper end of the oil guide pipe (13) is connected to the inside of the oil storage cup (14), and the lower end of the oil guide pipe (13) is connected to the upper end of the oil guide hole (6) of the rotor iron core of the worm compressor.

2. A refrigeration oil circulation structure based on a worm compressor according to claim 1, characterized in that: The oil pumping mechanism (26) is a gear pump, an eccentric pump or an oil stirring blade.

3. A refrigeration oil circulation structure based on a worm compressor according to claim 1, characterized in that: An oil cup cover (15) is installed on the opening of the oil storage cup (14); The oil cup cover (15) is provided with a through hole; The third gap is located in the through hole, and the through hole is located between the upper end and the lower end of the third gap.

4. A refrigeration oil circulation structure based on a worm compressor according to claim 1, characterized in that: It also includes a first transverse hole (11), a second transverse hole (17) and a third transverse hole (19), wherein the first transverse hole (11), the second transverse hole (17) and the third transverse hole (19) are all opened in the crankshaft (3) of the worm compressor; Both ends of the first transverse hole (11) are respectively connected to the oil inlet channel (12) and the first gap; Two ends of the second transverse hole (17) are respectively connected to the oil inlet channel (12) and the second gap; Both ends of the third transverse hole (19) are respectively connected to the oil inlet channel (12) and the third gap.

5. A refrigeration oil circulation system based on a worm gear compressor, comprising a worm gear compressor, wherein the worm gear compressor comprises a housing (1), a main support (2), a secondary support (5), a crankshaft (3), a movable worm gear (7), a fixed worm gear (8), an air intake pipe (9), a motor (4) and an air discharge pipe (25); The shell (1) is a cylindrical structure with an axis perpendicular to a horizontal plane and openings at both ends; The main support (2) and the auxiliary support (5) are coaxially mounted in the openings at the upper and lower ends of the housing (1); The crankshaft (3) is coaxially mounted in the housing (1), the upper end of the crankshaft (3) is coaxially mounted in the mounting hole of the main support (2), a third gap is formed between the crankshaft (3) and the main support (2), the lower end of the crankshaft (3) is coaxially mounted in the mounting hole of the auxiliary support (5), a first gap is formed between the crankshaft (3) and the auxiliary support (5); The movable worm wheel (7) is coaxially mounted on the crank at the upper end of the crankshaft (3) and is located between the crankshaft (3) and the main support (2); a second gap is formed between the crankshaft (3) and the movable worm wheel (7); the fixed worm wheel (8) is located directly above the movable worm wheel (7) and is assembled together with the movable worm wheel (7); a compression cavity is formed between the fixed worm wheel (8) and the movable worm wheel (7); the suction pipe (9) is mounted on the fixed worm wheel (8) and is connected to the compression cavity; The motor (4) is installed in the housing (1) and is located between the main support (2) and the auxiliary support (5); the rotor (401) of the motor (4) is coaxially installed on the crankshaft (3); the stator (402) of the motor (4) is coaxially installed on the inner wall of the housing (1); a rotor iron core oil guide hole (6) is provided in the rotor (401) of the motor (4); an oil storage chamber (21) is formed between the rotor (401) of the motor (4) and the auxiliary support (5); the lower end of the rotor iron core oil guide hole (6) and the upper end of the first gap are both in communication with the oil storage chamber (21); An exhaust cavity is formed between the motor (4) and the main support (2), and the exhaust pipe (25) is mounted on the housing (1) and communicated with the exhaust cavity; It is characterized in that It also includes a refrigeration oil circulation structure based on a worm compressor as described in any one of claims 1 to 4; The opening of the oil supply pool (10) in the refrigeration oil circulation structure based on the worm compressor is located directly below the first gap and is connected to the lower end of the first gap; The oil inlet passage (12) in the refrigeration oil circulation structure based on the worm compressor is coaxially opened in the crankshaft (3), and the upper end and the lower end of the oil inlet passage (12) are respectively connected to the upper end of the second gap and the opening of the oil supply pool (10); The oil pump mechanism (26) in the refrigeration oil circulation structure based on the worm compressor is installed at the lower end of the oil inlet channel (12) and can transport the refrigeration oil at the lower end of the oil inlet channel (12) to the upper end of the oil inlet channel (12); The oil storage tank (18) in the refrigeration oil circulation structure based on the worm compressor is opened between the main support (2) and the movable worm gear (7), and the lower end of the second gap and the upper end of the third gap are both connected to the oil storage tank (18); The oil storage cup (14) in the refrigeration oil circulation structure based on the worm compressor is coaxially mounted on the crankshaft (3) and located between the main support (2) and the motor (4), and the opening of the oil storage cup (14) is located directly below the third gap and is connected to the lower end of the third gap; The upper end and the lower end of the oil guide pipe (13) in the refrigeration oil circulation structure based on the worm compressor are respectively connected to the inside of the oil storage cup (14) and the upper end of the rotor iron core oil guide hole (6).

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