Ejector for chiller

Abstract

The present invention relates to the field of chillers, and specifically to an ejector for chillers, comprising an ejector chamber, a detachable reducer installed at the open end of the ejector chamber, a circular opening provided at the middle of the closed end of the ejector chamber, a connecting pipe for connecting to the exhaust end of a compressor installed in the circular opening, a sleeve provided on the connecting pipe, a conical head for adjusting the gap between the connecting pipe and the inner wall of the reducer installed at the end of the sleeve close to the reducer, an adjusting rod installed at the end of the sleeve away from the conical head, a guide hole matched with the adjusting rod provided at the closed end of the ejector chamber, a positioning member for limiting the relative position of the adjusting rod and the ejector chamber provided on the outer side of the guide hole, and the present invention has the following beneficial effects: achieving a change in the pressure difference formed in the ejector chamber, and ensuring the effect of sucking a mixed liquid of refrigeration oil and liquid refrigerant into the ejector chamber.

Description

Technical Field

[0001] The invention discloses an ejector for a water chiller and belongs to the field of water chillers. Background Art

[0002] The ejector used in chillers, when installed, the ejector inlet is connected to the exhaust side of the compressor, the ejector outlet is connected to the medium inlet of the compressor, and the ejector secondary fluid inlet pipe is connected to the oil return port of the evaporator. The ejector is used to return oil during system operation. Its power source is the suction effect caused by the pressure difference induced by the ejector. The high-pressure refrigerant is drawn from the exhaust side of the compressor into the ejector. Due to the internal hole structure of the ejector, the mixed liquid rich in refrigeration oil and liquid refrigerant can be sucked out from the appropriate position of the evaporator, and then mixed into the compressor or the suction pipe. The reducer is one of the components in the ejector. When other air on the exhaust side of the compressor flows into the reducer in the ejector, a pressure difference will be formed in the ejector chamber of the ejector, so that the mixed liquid of the refrigerant oil and liquid refrigerant in the evaporator is sucked into the ejector chamber. Since the size of the reducer in the ejector is fixed, the pressure difference formed in the ejector chamber is constant, and the pressure difference formed in the ejector chamber cannot be adjusted according to needs. It is easy for the mixed liquid of the refrigerant oil and liquid refrigerant to be sucked into the ejector chamber due to insufficient pressure difference in the ejector chamber, resulting in poor effect. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide an ejector for a chiller to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: an ejector of a chiller, including an ejector chamber, one end of the ejector chamber is open, a detachable reducer is installed at the open end of the ejector chamber, the reducer is a structure with thick ends and thin middle, a circular opening is opened in the middle of the closed end of the ejector chamber, a connecting pipe for connecting to the exhaust end of the compressor is installed in the circular opening, one end of the connecting pipe extends into the reducer, a pipe joint for connecting to a condenser is installed at the lower part of the outer surface of the ejector chamber, a pipe sleeve is provided on the connecting pipe, and the pipe sleeve is provided In the space formed by the ejection chamber and the reducer, a conical head for adjusting the gap between the connecting pipe and the inner wall of the reducer is installed at one end of the sleeve close to the reducer, the conical head is set on the connecting pipe and is slidably connected with the connecting pipe, the diameter of the conical head gradually decreases towards the sleeve, an adjusting rod is installed at one end of the sleeve away from the conical head, a guide hole matching the adjusting rod is provided at the closed end of the ejection chamber, the end of the adjusting rod away from the sleeve passes through the guide hole and extends to the outside of the ejection chamber, and a positioning piece for limiting the relative position of the adjusting rod and the ejection chamber is provided on the outside of the guide hole.

[0005] Specifically, the positioning member includes a positioning sleeve, a positioning sleeve is provided on the outside of the guide hole, the positioning sleeve is arranged concentrically with the guide hole, one end of the positioning sleeve is connected and fixed to the ejection chamber by a plurality of connecting screws, a threaded hole is provided at the upper position of the outer surface of the end of the positioning sleeve away from the ejection chamber, a positioning screw for limiting the relative position of the positioning sleeve and the adjusting rod is threadedly connected to the threaded hole, and a clamping member is provided on the positioning sleeve which is slidably connected to the positioning sleeve to prevent the positioning screw from loosening.

[0006] Specifically, the clamping member includes a pressing ring, a pressing ring is sleeved on the positioning sleeve and is slidably connected to the positioning sleeve, the pressing ring is arranged between the connecting screw and the positioning screw, a U-shaped plate is connected and fixed at the upper position of the outer surface of the pressing ring, the head of the positioning screw is arranged in the U-shaped plate, and a soft rubber pad in contact with the head of the positioning screw is adhered to the side of the U-shaped plate away from the pressing ring, a support arm plate is connected and fixed at the lower position of the outer surface of the pressing ring, a connecting rod is installed at the end of the support arm plate away from the pressing ring, a through hole matching the connecting rod is opened at the closed end of the ejection chamber, an end of the connecting rod away from the support arm plate passes through the through hole and is connected and fixed to a partition plate, the partition plate is slidably installed in the ejection chamber, the adjusting rod and the connecting pipe both pass through the partition plate, and a driving member for moving the pressing ring in a direction away from the ejection chamber is installed at the end of the positioning sleeve away from the ejection chamber.

[0007] Specifically, the driving member includes an L-shaped plate, and an L-shaped plate is installed at the lower position of the outer surface of the end of the positioning sleeve away from the ejection chamber, the L-shaped plate is arranged in parallel with the support arm plate, and a through hole is opened at the end of the L-shaped plate away from the positioning sleeve, a column rod is inserted in the through hole, the column rod and the connecting rod are arranged concentrically, one end of the column rod is connected and fixed to the support arm plate, and the end of the column rod away from the support arm plate is connected and fixed to a limiting head, a spring for moving the pressure ring in a direction away from the ejection chamber is provided between the limiting head and the L-shaped plate, and the spring sleeve is arranged on the column rod.

[0008] Specifically, a first sealing sleeve adhered to the partition disc is provided on the partition disc, and the first sealing sleeve is in sliding contact with the inner wall of the ejection chamber. A first circular hole is opened in the middle of one side of the partition disc, and a second sealing sleeve is pasted in the first circular hole. The connecting tube passes through the second sealing sleeve and the connecting tube is in sliding contact with the second sealing sleeve. A second circular hole is opened at the upper position of one side of the partition disc, and a third sealing sleeve is pasted in the second circular hole. The adjusting rod passes through the third sealing sleeve and the adjusting rod is in sliding contact with the third sealing sleeve.

[0009] Specifically, a connecting ring is connected and fixed to one end of the positioning sleeve close to the ejection chamber, a convex ring is provided between the connecting ring and the ejection chamber, the convex ring is connected and fixed to the ejection chamber, the convex ring is concentrically arranged with the guide hole, the adjusting rod passes through the convex ring, a plurality of small holes are equidistantly arranged in a circular shape on one side of the connecting ring facing the convex ring, a plurality of screw holes matching the small holes are equidistantly arranged in a circular shape on one side of the convex ring facing the connecting ring, and one end of the connecting screw passes through the small hole and is threadedly connected in the screw hole.

[0010] Specifically, the end of the sleeve away from the conical head is connected and fixed with a connecting ear, the end of the adjusting rod in the ejection chamber is connected and fixed to the connecting ear, the connecting ear is recessed on one side facing the adjusting rod to form a blind hole, and one end of the adjusting rod extends into the blind hole.

[0011] Specifically, a sealing gasket is provided between the ejection chamber and the reducer, a first flange is connected and fixed to one end of the ejection chamber close to the sealing gasket, a second flange is connected and fixed to one end of the reducer close to the sealing gasket, the sealing gasket is arranged between the first flange and the second flange, and the first flange is connected and fixed to the second flange by multiple sets of bolts.

[0012] Beneficial effects of the present invention:

[0013] 1. Align the connecting ring with the convex ring, then pass the connecting screw through the small hole on the connecting ring and screw it into the screw hole on the convex ring to complete the assembly of the positioning sleeve and the ejection chamber, thereby partially increasing the thickness of the ejection chamber where the connecting screw is installed.

[0014] 2. Adjust the position of the adjusting rod along the guide hole. At this time, the adjusting rod drives the pipe sleeve to move along the connecting pipe, and the pipe sleeve drives the conical head to move along the connecting pipe, so that the position of the conical head in the reducer changes. At this time, the gap between the conical head and the inner wall of the reducer increases or decreases, that is, when the conical head moves toward the middle of the reducer, the gap between the conical head and the inner wall of the reducer decreases, and vice versa. The airflow discharged from the connecting pipe cooperates with the change in the thickness of the internal space of the reducer to change the flow rate of the fluid flowing through the conical head and the inner wall of the reducer, that is, when the gap between the conical head and the inner wall of the reducer becomes smaller, the flow rate of the fluid flowing through the conical head and the inner wall of the reducer increases, and vice versa, the flow rate of the fluid flowing through the conical head and the inner wall of the reducer decreases, so as to change the size of the pressure difference formed in the injection chamber, so as to adjust the pressure difference formed in the injection chamber as needed, and ensure that the mixed liquid of the refrigeration oil and the liquid refrigerant is sucked into the injection chamber.

[0015] 3. After the position of the adjusting rod is adjusted, the positioning screw can be used to limit the relative position of the adjusting rod and the positioning sleeve to complete the restriction of the relative position of the tapered head and the reducer, and the tapered head and the adjusting rod are connected with the pipe sleeve. At this time, the end face of the pipe sleeve away from the tapered head is on the side of the pipe joint away from the opening end of the injection chamber, thereby preventing the mixed liquid of the refrigerant oil and the liquid refrigerant that enters the injection chamber from the condenser from flowing smoothly through the injection chamber, and avoiding the mixed liquid of the refrigerant oil and the liquid refrigerant from being blocked by the plane and reducing the flow rate.

[0016] 4. Make the connecting pipe and the adjusting rod pass through the partition plate, and install the first sealing sleeve between the partition plate and the ejection chamber, the second sealing sleeve between the connecting pipe and the partition plate, and the third sealing sleeve between the adjusting rod and the partition plate, so as to achieve non-interference in the movement of the partition plate, the connecting pipe and the adjusting rod, and improve the sealing between the partition plate, the connecting pipe and the adjusting rod.

[0017] 5. When a pressure difference is formed in the ejection chamber, the partition moves toward the reducer in the ejection chamber under the action of the pressure difference. At this time, the partition drives the pressure ring to move along the positioning sleeve through the connecting rod and the support arm plate until the pressure ring is pressed on the connecting screw. At this time, the soft rubber pad in the U-shaped plate contacts the head of the positioning screw, and the soft rubber pad is deformed after being blocked by the positioning screw. Then, under the pressure of the pressure ring, the connecting screw is prevented from loosening due to the vibration generated by the high-speed flow of the fluid. After the soft rubber pad presses the head of the positioning screw, it prevents the positioning screw from loosening due to the vibration, thereby improving the stability of the structure.

[0018] 6. When the support arm plate drives the pressure ring to move, the support arm plate drives the column rod to move along the perforation on the L-shaped plate, thereby shortening the distance between the limit head and the L-shaped plate. At this time, the spring is in a compressed state. When there is no pressure difference in the ejection chamber, the partition plate returns to its original position under the action of the spring rebound force. At this time, the pressure ring does not press the connecting screws, and the soft rubber pad is separated from the positioning screws, so that it is easy to turn the connecting screws and the positioning screws when the chiller is not working, so as to facilitate the adjustment of the position of the adjusting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0020] Figure 1 This is a schematic diagram of the structure of an ejector for a chiller according to the present invention;

[0021] Figure 2 A three-dimensional diagram of an ejector of a chiller according to the present invention from another perspective;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4A cross-sectional view of an ejector of a chiller according to the present invention;

[0024] Figure 5 It is a schematic diagram of the assembly of a conical head, a pipe sleeve, a spacer, a positioning sleeve, an adjusting rod and a connecting pipe in an ejector of a chiller according to the present invention;

[0025] Figure 6 It is a schematic diagram of the assembly of a pipe joint, a convex ring and an ejection chamber in an ejector of a chiller according to the present invention;

[0026] Figure 7 It is a schematic diagram of the assembly of an L-shaped plate and a positioning sleeve in an ejector of a chiller according to the present invention;

[0027] Figure 8 It is a schematic diagram of the assembly of a first sealing sleeve, a second sealing sleeve, a third sealing sleeve and a partition plate in an ejector of a chiller according to the present invention;

[0028] In the figure: 1, ejection chamber, 2, U-shaped plate, 3, adjusting rod, 4, connecting pipe, 5, pipe joint, 6, first flange, 7, sealing gasket, 8, second flange, 9, reducer, 10, positioning screw, 11, convex ring, 12, connecting ring, 13, connecting screw, 14, pressure ring, 15, connecting rod, 16, support arm plate, 17, column rod, 18, spring, 19, limit head, 20, L-shaped plate, 21, positioning sleeve, 22, soft rubber pad, 23, spacer, 24, pipe sleeve, 25, tapered head, 26, connecting ear, 27, threaded hole, 28, perforation, 29, round mouth, 30, first sealing sleeve, 31, second sealing sleeve, 32, third sealing sleeve. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] See also Figure 1 , Figure 2 , Figure 4 and Figure 6 The present invention provides a technical solution: an ejector for a chiller, comprising an ejector chamber 1, one end of the ejector chamber 1 is open, a detachable reducer 9 is installed at the open end of the ejector chamber 1, the reducer 9 is a structure with thick ends and thin middle, a sealing gasket 7 is arranged between the ejector chamber 1 and the reducer 9, a first flange 6 is connected and fixed to one end of the ejector chamber 1 close to the sealing gasket 7, a second flange 8 is connected and fixed to one end of the reducer 9 close to the sealing gasket 7, the sealing gasket 7 is arranged between the first flange 6 and the second flange 8, the first flange 6 is connected and fixed to the second flange 8 by multiple sets of bolts, and the assembly of the reducer 9 and the ejector chamber 1 is completed.

[0031] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 A circular opening 29 is provided at the middle of the closed end of the ejection chamber 1, and a connecting pipe 4 for connecting to the exhaust end of the compressor is installed in the circular opening 29. One end of the connecting pipe 4 extends into the reducer 9. A pipe joint 5 for connecting to the condenser is installed at the lower position of the outer surface of the ejection chamber 1, so that the pipe joint 5 is connected to the condenser, and the connecting pipe 4 is connected to the exhaust end of the compressor in the chiller, and then the high-speed airflow discharged from the exhaust end of the compressor flows into the reducer 9 through the connecting pipe 4. Affected by the shape of the internal space of the reducer 9, a negative pressure is formed in the ejection chamber 1. Under the action of the negative pressure, the mixed liquid of the refrigeration oil and the liquid refrigerant in the condenser flows back to the air intake side of the compressor in the chiller through the reducer 9.

[0032] See also Figure 1-Figure 7 , a sleeve 24 is sleeved on the connecting pipe 4, and the sleeve 24 is arranged in the space formed by the ejection chamber 1 and the reducer 9. A conical head 25 for adjusting the gap between the connecting pipe 4 and the inner wall of the reducer 9 is installed at one end of the sleeve 24 close to the reducer 9. The conical head 25 is sleeved on the connecting pipe 4 and is slidably connected to the connecting pipe 4. The diameter of the conical head 25 gradually decreases in the direction close to the sleeve 24. The end of the sleeve 24 away from the conical head 25 is connected and fixed with a connecting ear 26. The side of the connecting ear 26 facing the adjusting rod 3 is recessed to form a blind hole, so that one end of the adjusting rod 3 extends into the blind hole and is connected and fixed to the connecting ear 26, completing the connection and fixation of the adjusting rod 3 and the sleeve 24. A guide hole matching the adjusting rod 3 is opened at the closed end of the ejection chamber 1. The end of the adjusting rod 3 away from the sleeve 24 passes through the guide hole and extends to the outside of the ejection chamber 1. The position of the adjusting rod 3 is adjusted along the guide hole. At this time, the adjusting rod 3 drives the sleeve 24 to move along the connecting pipe 4, and the sleeve 24 drives the conical head 25 to move along the connecting pipe 4, so that the position of the conical head 25 in the reducer 9 changes. At this time, the gap between the conical head 25 and the inner wall of the reducer 9 becomes larger or smaller, that is, when the conical head 25 moves to the middle of the reducer 9, the gap between the conical head 25 and the inner wall of the reducer 9 becomes smaller, and vice versa. The airflow discharged from the connecting pipe 4 cooperates with the change in the thickness of the internal space of the reducer 9 to change the flow rate of the fluid flowing through the conical head 25 and the inner wall of the reducer 9. That is, when the gap between the conical head 25 and the inner wall of the reducer 9 becomes smaller, the flow rate of the fluid flowing through the conical head 25 and the inner wall of the reducer 9 increases, and vice versa, the flow rate of the fluid flowing through the conical head 25 and the inner wall of the reducer 9 decreases, so as to change the size of the pressure difference formed in the injection chamber 1, so as to adjust the pressure difference formed in the injection chamber 1 as needed, and ensure that the mixed liquid of the refrigeration oil and the liquid refrigerant is sucked into the injection chamber 1.

[0033] See also Figure 1-Figure 7A positioning sleeve 21 is provided on the outside of the guide hole, and the positioning sleeve 21 is arranged concentrically with the guide hole. One end of the positioning sleeve 21 is connected and fixed to the ejection chamber 1 through a plurality of connecting screws 13, wherein the end of the positioning sleeve 21 close to the ejection chamber 1 is connected and fixed with a connecting ring 12, and a convex ring 11 is provided between the connecting ring 12 and the ejection chamber 1, and the convex ring 11 is connected and fixed to the ejection chamber 1, and the convex ring 11 is arranged concentrically with the guide hole, and the adjusting rod 3 passes through the convex ring 11, and a plurality of small holes are opened in an annular manner and equidistantly on the side of the connecting ring 12 facing the convex ring 11, and a plurality of screw holes matching the small holes are opened in an annular manner and equidistantly on the side of the convex ring 11 facing the connecting ring 12, and one end of the connecting screw 13 passes through the small hole and is threadedly connected in the screw hole, so that the connecting ring 12 is aligned with the convex ring 11, and then the connecting screw 13 is passed through the small hole on the connecting ring 12 and then screwed into the screw hole on the convex ring 11, and the assembly of the positioning sleeve 21 and the ejection chamber 1 is completed, so as to locally increase the thickness of the ejection chamber 1 where the connecting screw 13 is installed.

[0034] See also Figure 1-Figure 7 A threaded hole 27 is provided at the upper position of the outer surface of one end of the positioning sleeve 21 away from the injection chamber 1, and a positioning screw 10 for limiting the relative position of the positioning sleeve 21 and the adjusting rod 3 is connected to the inner thread of the threaded hole 27. After the position of the adjusting rod 3 is adjusted, the positioning screw 10 is used to limit the relative position of the adjusting rod 3 and the positioning sleeve 21, thereby completing the restriction of the relative position of the conical head 25 and the reducer 9. The conical head 25 and the adjusting rod 3 are connected by the pipe sleeve 24. At this time, the end face of the pipe sleeve 24 away from the conical head 25 is located on the side of the pipe joint 5 away from the opening end of the injection chamber 1, thereby preventing the mixed liquid of the refrigerant oil and the liquid refrigerant entering the injection chamber 1 from the condenser from being able to flow smoothly through the injection chamber 1, and avoiding the mixed liquid of the refrigerant oil and the liquid refrigerant from being blocked by the plane and reducing the flow rate.

[0035] See also Figure 1-Figure 8The positioning sleeve 21 is sleeved with a pressure ring 14 that is slidably connected to the positioning sleeve 21. The pressure ring 14 is set at the time of the connecting screw 13 and the positioning screw 10. A U-shaped plate 2 is connected and fixed to the upper position of the outer surface of the pressure ring 14. The head of the positioning screw 10 is set in the U-shaped plate 2. A soft rubber pad 22 that contacts the head of the positioning screw 10 is adhered to the side of the U-shaped plate 2 away from the pressure ring 14. A support arm plate 16 is connected and fixed to the lower position of the outer surface of the pressure ring 14. A connecting rod 15 is installed at one end of the support arm plate 16 away from the pressure ring 14. A through hole 28 that matches the connecting rod 15 is opened at the closed end of the injection chamber 1. The end of the connecting rod 15 away from the support arm plate 16 passes through the through hole 28 and is connected and fixed to the partition plate 23. The partition plate 23 is slidably installed in the injection chamber 1. The adjusting rod 3 and the connecting pipe 4 both pass through the partition plate 23. When a pressure difference is formed in the ejection chamber 1, the partition plate 23 moves in the ejection chamber 1 toward the reducer 9 under the action of the pressure difference. At this time, the partition plate 23 drives the pressure ring 14 to move along the positioning sleeve 21 through the connecting rod 15 and the support arm plate 16 until the pressure ring 14 is pressed on the connecting screw 13. At this time, the soft rubber pad 22 in the U-shaped plate 2 contacts the head of the positioning screw 10, and the soft rubber pad 22 is deformed after being blocked by the positioning screw 10. Then, under the pressure of the pressure ring 14, the connecting screw 13 is prevented from loosening due to the vibration generated by the high-speed flow of the fluid. After the soft rubber pad 22 presses the head of the positioning screw 10, it prevents the positioning screw 10 from loosening due to the vibration, thereby improving the stability of the structure.

[0036] See also Figure 1-Figure 7 An L-shaped plate 20 is installed at the lower position of the outer surface of the end of the positioning sleeve 21 away from the ejection chamber 1. The L-shaped plate 20 is arranged in parallel with the support arm plate 16. A through hole is opened at the end of the L-shaped plate 20 away from the positioning sleeve 21. A column 17 is inserted in the through hole. The column 17 is arranged concentrically with the connecting rod 15. One end of the column 17 is connected and fixed to the support arm plate 16. The end of the column 17 away from the support arm plate 16 is connected and fixed to a limit head 19. A spring 18 for moving the pressure ring 14 away from the ejection chamber 1 is provided between the limit head 19 and the L-shaped plate 20. The spring 18 is sleeved on the column 17. When the support arm plate 16 drives the pressure ring 14 to move, the support arm plate 16 drives the column rod 17 to move along the through hole 28 on the L-shaped plate 20, so that the distance between the limit head 19 and the L-shaped plate 20 is shortened. At this time, the spring 18 is in a compressed state. When there is no pressure difference in the injection chamber 1, the partition plate 23 is restored to its original position under the action of the rebound force of the spring 18. At this time, the pressure ring 14 does not press the connecting screw 13, and the soft rubber pad 22 is separated from the positioning screw 10, so that it is convenient to turn the connecting screw 13 and the positioning screw 10 when the chiller is not working, so as to facilitate the adjustment of the position of the adjusting rod 3.

[0037] See also Figure 4 , Figure 5 and Figure 8A first sealing sleeve 30 adhered to the partition disc 23 is sleeved on the partition disc 23, and the first sealing sleeve 30 is in sliding contact with the inner wall of the injection chamber 1. A first circular hole is opened in the middle of one side of the partition disc 23, and a second sealing sleeve 31 is pasted in the first circular hole. The connecting pipe 4 passes through the second sealing sleeve 31 and the connecting pipe 4 and the second sealing sleeve 31 are in sliding contact. A second circular hole is opened at the upper position of one side of the partition disc 23, and a third sealing sleeve 33 is pasted in the second circular hole. The adjusting rod 3 passes through the third sealing sleeve 33 and the adjusting rod 3 and the third sealing sleeve 33 are in sliding contact, so that the connecting pipe 4 and the adjusting rod 3 both pass through the partition disc 23, and the first sealing sleeve 30 is installed between the partition disc 23 and the injection chamber 1, the second sealing sleeve 31 is installed between the connecting pipe 4 and the partition disc 23, and the third sealing sleeve 33 is installed between the adjusting rod 3 and the partition disc 23, so that the movement of the partition disc 23, the connecting pipe 4 and the adjusting rod 3 does not interfere with each other, and the sealing between the partition disc 23, the connecting pipe 4 and the adjusting rod 3 is improved.

[0038] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An ejector for a chiller, comprising an ejector chamber (1), characterized in that: One end of the ejection chamber (1) is open, and a detachable reducer (9) is installed at the open end of the ejection chamber (1). The reducer (9) is a structure with thick ends and thin middle. A circular opening (29) is opened in the middle of the closed end of the ejection chamber (1). A connecting pipe (4) for connecting to the exhaust end of the compressor is installed in the circular opening (29). One end of the connecting pipe (4) extends into the reducer (9). A pipe joint (5) for connecting to a condenser is installed at the lower part of the outer surface of the ejection chamber (1). A pipe sleeve (24) is sleeved on the connecting pipe (4). The pipe sleeve (24) is arranged in a space formed by the ejection chamber (1) and the reducer (9). The pipe sleeve (24) is close to the reducer. A conical head (25) for adjusting the gap between the connecting pipe (4) and the inner wall of the reducing pipe (9) is installed at one end of the connecting pipe (4), the conical head (25) is sleeved on the connecting pipe (4) and is slidably connected to the connecting pipe (4), the diameter of the conical head (25) gradually decreases in the direction approaching the pipe sleeve (24), an adjusting rod (3) is installed at one end of the pipe sleeve (24) away from the conical head (25), a guide hole matching the adjusting rod (3) is opened at the closed end of the ejection chamber (1), the end of the adjusting rod (3) away from the pipe sleeve (24) passes through the guide hole and extends to the outside of the ejection chamber (1), and a positioning member for limiting the relative position of the adjusting rod (3) and the ejection chamber (1) is provided on the outside of the guide hole; The positioning member comprises a positioning sleeve (21), a positioning sleeve (21) is arranged outside the guide hole, the positioning sleeve (21) and the guide hole are arranged concentrically, one end of the positioning sleeve (21) is connected and fixed to the ejection chamber (1) by a plurality of connecting screws (13), a threaded hole (27) is provided at an upper position of an outer surface of an end of the positioning sleeve (21) away from the ejection chamber (1), a positioning screw (10) for limiting the relative position of the positioning sleeve (21) and the adjusting rod (3) is connected to the inner thread of the threaded hole (27), and a pressing member for preventing the positioning screw (10) from loosening and being slidably connected to the positioning sleeve (21) is sleeved on the positioning sleeve (21); The clamping member comprises a pressing ring (14), the positioning sleeve (21) is provided with a pressing ring (14) which is slidably connected to the positioning sleeve (21), the pressing ring (14) is arranged between the connecting screw (13) and the positioning screw (10), the upper part of the outer surface of the pressing ring (14) is connected and fixed with a U-shaped plate (2), the head of the positioning screw (10) is arranged in the U-shaped plate (2), a soft rubber pad (22) which contacts with the head of the positioning screw (10) is adhered to the side of the U-shaped plate (2) away from the pressing ring (14), and the lower part of the outer surface of the pressing ring (14) is connected and fixed with a support arm plate (13). 6), a connecting rod (15) is installed at one end of the support arm plate (16) away from the pressure ring (14), and a through hole (28) matching with the connecting rod (15) is opened at the closed end of the ejection chamber (1), and the end of the connecting rod (15) away from the support arm plate (16) passes through the through hole (28) and is connected and fixed to the partition plate (23), and the partition plate (23) is slidably installed in the ejection chamber (1), and the adjusting rod (3) and the connecting pipe (4) both pass through the partition plate (23), and a driving member for moving the pressure ring (14) away from the ejection chamber (1) is installed at one end of the positioning sleeve (21) away from the ejection chamber (1).

2. The ejector of a chiller according to claim 1, characterized in that: The driving member comprises an L-shaped plate (20), and the L-shaped plate (20) is installed at the lower part of the outer surface of one end of the positioning sleeve (21) away from the ejection chamber (1), and the L-shaped plate (20) is arranged in parallel with the support arm plate (16). The end of the L-shaped plate (20) away from the positioning sleeve (21) is provided with a through hole, and a column rod (17) is inserted in the through hole. The column rod (17) is arranged concentrically with the connecting rod (15), and one end of the column rod (17) is connected and fixed to the support arm plate (16), and the end of the column rod (17) away from the support arm plate (16) is connected and fixed to a limiting head (19), and a spring (18) for moving the pressure ring (14) in a direction away from the ejection chamber (1) is provided between the limiting head (19) and the L-shaped plate (20), and the spring (18) is sleeved on the column rod (17).

3. The ejector of a chiller according to claim 1, characterized in that: The partition plate (23) is sleeved with a first sealing sleeve (30) adhered to the partition plate (23), and the first sealing sleeve (30) is in sliding contact with the inner wall of the ejection chamber (1). A first circular hole is opened at the middle position of one side of the partition plate (23), and a second sealing sleeve (31) is pasted in the first circular hole. The connecting tube (4) passes through the second sealing sleeve (31) and the connecting tube (4) and the second sealing sleeve (31) are in sliding contact. A second circular hole is opened at the upper position of one side of the partition plate (23), and a third sealing sleeve (33) is pasted in the second circular hole. The adjusting rod (3) passes through the third sealing sleeve (33), and the adjusting rod (3) and the third sealing sleeve (33) are in sliding contact.

4. The ejector of a chiller according to claim 1, characterized in that: A connecting ring (12) is connected and fixedly arranged at one end of the positioning sleeve (21) close to the ejection chamber (1); a convex ring (11) is arranged between the connecting ring (12) and the ejection chamber (1); the convex ring (11) is connected and fixedly arranged with the ejection chamber (1); the convex ring (11) and the guide hole are arranged concentrically; the adjusting rod (3) passes through the convex ring (11); a plurality of small holes are formed in an annular shape and are equidistantly arranged on one side of the connecting ring (12) facing the convex ring (11); a plurality of screw holes matching the small holes are formed in an annular shape and are equidistantly arranged on one side of the convex ring (11) facing the connecting ring (12); one end of the connecting screw (13) passes through the small hole and is threadedly connected in the screw hole.

5. The ejector of a chiller according to claim 1, characterized in that: The end of the sleeve (24) away from the conical head (25) is connected and fixed with a connecting ear (26), and the end of the adjusting rod (3) in the ejection chamber (1) is connected and fixed to the connecting ear (26), and the side of the connecting ear (26) facing the adjusting rod (3) is recessed to form a blind hole, and one end of the adjusting rod (3) extends into the blind hole.

6. The ejector of a chiller according to claim 1, characterized in that: A sealing gasket (7) is provided between the ejection chamber (1) and the reducer (9); a first flange (6) is connected and fixed to one end of the ejection chamber (1) close to the sealing gasket (7); a second flange (8) is connected and fixed to one end of the reducer (9) close to the sealing gasket (7); the sealing gasket (7) is provided between the first flange (6) and the second flange (8); and the first flange (6) is connected and fixed to the second flange (8) by a plurality of sets of bolts.

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