Double-compressor circulating system of refrigerating unit

Abstract

The double-compressor circulating system comprises a socket pipe set, a spigot pipe, a first sealing piece, a second sealing piece and a third sealing piece, one end of the spigot pipe is inserted into the socket pipe set, and three seals are formed through the first sealing piece, the second sealing piece and the third sealing piece; the first sealing piece, the second sealing piece and the third sealing piece are arranged in the axial direction of the spigot pipe, the first sealing piece is located between the second sealing piece and the third sealing piece, the spigot pipe penetrates through the inner circumference of the first sealing piece, and a spherical concave face is formed in the inner circumference of the first sealing piece; a spherical convex face is formed on the periphery of the spigot pipe and embedded into the spherical concave face, and the spherical convex face and the spherical concave face are matched with each other in a sealing mode and can deflect from each other in a bulb mode. Sealing is achieved through the three sealing structures together, and the sealing effect of the refrigerant pipeline can be greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a refrigeration equipment, more particularly, to a compressor damping joint structure, and to a double compressor circulation system of a refrigeration unit. BACKGROUND

[0002] During the operation of the compressor, a large vibration is generated. Since the current refrigerant delivery pipeline is mostly rigidly connected, the vibration of the compressor is directly transmitted to other components of the refrigeration system through the refrigerant delivery pipeline. Long-term continuous vibration may affect the service life of each component in the refrigeration system, especially the sealing effect of the joint of the refrigerant delivery pipeline. During the pipeline vibration, the radial relative deflection between the socket and the spigot of the joint connection is generated, which causes the joint connection to be prone to leakage. In addition, some refrigeration systems also use a double compressor scheme. When the two compressors are running at the same time, the vibrations of the two compressors affect each other, causing the joint of the refrigerant output pipe of the compressor to be particularly prone to the adverse effects of vibration.

[0003] In order to reduce the adverse effects of the vibration of the compressor, some compressors use a damping hose to connect with the refrigerant pipeline, which can greatly eliminate the vibration effects. The scheme of using a damping hose can solve the adverse effects of vibration to a certain extent. The present application proposes a new scheme to solve this problem. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a compressor damping joint structure with good damping and sealing stability.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a compressor damping joint structure, comprising a socket pipe group, a spigot pipe, a first sealing member, a second sealing member and a third sealing member, one end of the spigot pipe is inserted into the socket pipe group, and three seals are formed by the first sealing member, the second sealing member and the third sealing member, the first sealing member, the second sealing member and the third sealing member are arranged along the axial direction of the spigot pipe, the first sealing member is located between the second sealing member and the third sealing member, the spigot pipe penetrates the inner periphery of the first sealing member, and the inner periphery of the first sealing member forms a spherical concave surface; the outer periphery of the spigot pipe forms a spherical convex surface, the spherical convex surface is embedded in the spherical concave surface, and the spherical convex surface and the spherical concave surface are mutually sealed and adapted and can mutually deflect the spherical head.

[0006] The present application is further provided that the second sealing member is located on the side of the first sealing member facing the spigot pipe; along the axial direction of the spigot pipe, the distance between the first sealing member and the third sealing member is L1, and the distance between the first sealing member and the second sealing member is L2, L1>L2.

[0007] The application is further configured that L1>1.5*L2.

[0008] The application is further configured that the socket pipe set comprises a socket pipe, a connecting sleeve one and a connecting sleeve two, the connecting sleeve one is threadedly connected to the outer periphery of the end of the socket pipe, and the first sealing element is installed between the connecting sleeve one and the socket pipe;

[0009] The application is further configured that the connecting sleeve two is threadedly connected to one end of the connecting sleeve one away from the socket pipe, and the second sealing element is installed between the connecting sleeve two and the connecting sleeve one;

[0010] The application is further configured that the spigot pipe penetrates through the connecting sleeve one, the connecting sleeve two, the first sealing element and the second sealing element, and is inserted into the socket pipe, and the end of the spigot pipe inserted into the socket pipe is sealed by the third sealing element between the inner periphery of the socket pipe and the outer periphery of the spigot pipe.

[0011] The application is further configured that the inner periphery of the socket pipe is formed with a sealing cone surface one towards the spigot pipe, the outer periphery of the spigot pipe is formed with a stepped surface one towards the socket pipe, and the two ends of the third sealing element are respectively pressed to seal by the sealing cone surface one and the stepped surface one.

[0012] The application is further configured that the inner periphery of the third sealing element is sleeved on the outer periphery of the spigot pipe, and the outer periphery of the third sealing element is sleeved on the inner periphery of the socket pipe.

[0013] The application is further configured that the socket pipe comprises a socket end face, the connecting sleeve one is threadedly connected to the outer periphery of the socket pipe, the inner periphery of the connecting sleeve one is integrally connected with a limiting convex ring one, and the first sealing element is nested in the inner periphery of the connecting sleeve one and is pressed to seal by the socket end face and the limiting convex ring one.

[0014] The application is further configured that the first sealing element comprises two annular halves, the inner peripheries of the two halves are respectively formed with spherical convex surfaces, and the two halves are respectively sleeved on the two sides of the spherical convex surfaces.

[0015] The application is further configured that one end of the connecting sleeve one away from the socket pipe is integrally connected with a connecting convex ring.

[0016] The application is further configured that the connecting sleeve two is threadedly connected to the connecting convex ring, the inner periphery of the connecting sleeve two is integrally connected with a limiting convex ring two, and the second sealing element is nested in the inner periphery of the connecting sleeve two and is pressed to seal by the connecting convex ring and the limiting convex ring two.

[0017] The application is further configured to further comprise a medium pipe, the socket pipe and the medium pipe are welded and fixed to each other and communicate with each other.

[0018] The medium pipe is connected with an extension sleeve on the side away from the socket pipe, the extension sleeve is coaxially arranged with the socket pipe, one end of the socket pipe extending into the socket pipe is integrally connected with an extension pipe section, the extension pipe section passes through the medium pipe and extends into the extension sleeve; a fourth sealing element is sleeved between the extension sleeve and the extension pipe section, the inner and outer periphery of the fourth sealing element abut against the extension pipe section and the extension sleeve respectively;

[0019] The application further provides that the extension pipe section is provided with a communication hole corresponding to the position of the medium pipe.

[0020] The application further provides that the refrigerant output pipe of the compressor is integrally connected with the socket pipe.

[0021] The application further provides a double-compressor circulation system of a refrigeration unit, comprising two sets of compressors and two sets of the compressor damping joint structures as described above, and the refrigerant output pipes of the two sets of compressors are respectively connected with medium pipes for condensation circulation.

[0022] In summary, the application has the following beneficial effects:

[0023] By arranging the spherical sealing connection joint between the socket pipe and the socket pipe group, the spherical swing adjustment structure can be realized between the socket pipe and the first sealing element, the vibration deflection of the socket pipe can be concentrated at the position of the first sealing element, the socket pipe can produce a deflection action around the spherical structure, the vibration conduction between the socket pipe and the socket pipe can be reduced through the mutual deflection action of the two, and a certain sealing effect is maintained during the deflection process; moreover, two additional sealing structures, the second sealing element and the third sealing element, are arranged on both sides of the first sealing element, respectively, the deflection amplitude can be additionally limited on both sides of the first sealing element, respectively, to avoid excessive deflection amplitude, the three sealing structures realize sealing together, and the sealing effect of the connection position can be greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a perspective view of a double-compressor circulation system of a refrigeration unit in Example Three;

[0025] Figure 2 It is a front view of a double-compressor circulation system of a refrigeration unit in Example Three;

[0026] Figure 3 It is a connection structure schematic view of the refrigerant output pipes of the two compressors in Example Three;

[0027] Figure 4 It is a sectional view of a compressor damping joint structure in Example One;

[0028] Figure 5It is an exploded view of the compressor damping joint structure in Example One;

[0029] Figure 6 It is an exploded view of the socket pipe group in Example One.

[0030] Figure 7 It is a sectional view of the compressor damping joint structure in Example Two;

[0031] Figure 8 It is an exploded view of the compressor damping joint structure in Example Two;

[0032] Figure 9 It is an exploded view of the socket pipe group in Example Two.

[0033] Reference signs: compressor 100; refrigerant output pipe 1001; medium pipe 1; socket pipe group 200; socket pipe 2; socket end face 21; sealing cone face one 22; spigot pipe 3; spherical convex face 31; stepped face one 32; sealing ring groove 33; extension pipe section 34; communication hole 35; connecting sleeve one 4; limiting convex ring one 41; connecting convex ring 42; sealing cone face two 43; connecting sleeve two 5; limiting convex ring two 51; first sealing member 6; half body 61; spherical concave face 61; third sealing member 7; sealing conical part two 71; extension sleeve 8; second sealing member 9; ring convex part 91; sealing conical part one 92; fourth sealing member 10; threaded sleeve 101; sealing conical part three 102; ring groove 103; sealing cone face three 104; end cover 11; fifth sealing member 111. DETAILED DESCRIPTION

[0034] 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 a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0035] Example One

[0036] The present embodiment discloses a compressor damping joint structure, referring to Figures 3-6 as shown, comprising a socket pipe group 200, a spigot pipe 3, a first sealing member 6, a second sealing member 9 and a third sealing member 7. One end of the spigot pipe 3 is inserted into the socket pipe group 200, and three seals are formed by the first sealing member 6, the second sealing member 9 and the third sealing member 7.

[0037] In the three-seal structure, the first sealing member 6, the second sealing member 9 and the third sealing member 7 are arranged along the axial direction of the spigot pipe 3, and the first sealing member 6 is located between the second sealing member 9 and the third sealing member 7.

[0038] The spigot pipe 3 penetrates the inner periphery of the first sealing member 6, and the inner periphery of the first sealing member 6 forms a spherical concave surface 61; the outer periphery of the spigot pipe 3 is integrally connected with an annular protrusion, and the outer periphery of the annular protrusion forms a spherical convex surface 31. The spherical convex surface 31 is embedded in the spherical concave surface 6, and the spherical convex surface 31 and the spherical concave surface 61 are in sealing fit with each other; moreover, due to the mutual fit of the spherical convex surface 31 and the spherical concave surface 61, the mutual spherical head deflection between the two can be realized on the basis of mutual sealing, and further, the spigot pipe 3 can be swingably moved relative to the spout pipe group 200.

[0039] In the embodiment, a refrigerant output pipe 1001 of the compressor 100 is further included, and the refrigerant output pipe 1001 is integrally connected with the spigot pipe 3. The spigot pipe 3 and the spout pipe group 200 are connected through the joint structure, and the spout pipe group 200 is connected in the refrigerant medium circulation pipeline, so that the circulation flow between the compressor and the refrigerant pipeline can be realized. During the operation of the compressor, the refrigerant output pipe 1001 of the compressor 100 will generate vibration, and during the vibration process, the refrigerant output pipe 1001 (i.e. the spigot pipe 3) will generate vibration deflection with a certain amplitude, taking the spherical convex surface 31 and the spherical concave surface 61 as the center of the spherical head deflection, and further, the joint structure can generate small swing movement, and the spherical convex surface 31 and the spherical concave surface 61 can always maintain a sealed state during the swing movement. The spigot pipe 3 can reduce the vibration influence on the spout pipe group 200 during the vibration process of the compressor 100.

[0040] The first sealing member 6 is located between the second sealing member 9 and the third sealing member 7, and the second sealing member 9 is located on the side of the first sealing member 6 facing the spigot pipe 3. The second sealing member 9 and the third sealing member 7 can form two sealing structures on the two sides of the first sealing member 6, respectively, wherein the third sealing member 7 is located in the spout pipe group 200, and the second sealing member 9 is located close to the outer end of the spout pipe group 200.

[0041] In the axial direction of the spigot pipe 3, the distance between the first sealing member 6 and the third sealing member 7 is greater than the distance between the first sealing member 6 and the second sealing member 9; specifically, the distance between the first sealing member 6 and the third sealing member 7 is L1, and the distance between the first sealing member 6 and the second sealing member 9 is L2, and L1>L2.

[0042] Since the distance of L1 is larger and the distance of L2 is smaller. During the deflection of the spigot pipe 3 around the first sealing member 6, the spigot pipe 3 will produce lateral deflection, and the center position of the deflection is located at the middle position of the first sealing member 6; and at the middle position of the first sealing member 6, the radial deflection amplitude of the spigot pipe 3 is the smallest, and the farther the distance from the first sealing member 6, the larger the radial deflection amplitude of the spigot pipe 3 will be. During the deflection of the spigot pipe 3, due to the second sealing member 9 and the third sealing member 7, there is a certain difference in the distance from the first sealing member 6, and the radial deflection amplitude generated at the third sealing member 7 is slightly larger, and the radial deflection amplitude generated at the second sealing member 9 is smaller. Through the radial deflection amount generated at the third sealing member 7, the amount of deflection generated at the second sealing member 9 can be further limited, and the effective sealing state of the second sealing member 9 can be ensured while ensuring that the third sealing member 7 is in a sealed state. Through the three sealing structures, the sealing stability of the spigot pipe 3 can be stably and effectively limited.

[0043] Specifically, in the present embodiment, L1>1.5·L2. The annular sealing member is sleeved on the outer periphery of the spigot pipe 3, and when a small radial deflection is generated, the sealing member can be in a normal sealing state, for example, at the annular sealing member, when the radial deflection is within the range of A, the sealing member can be in a normal and effective sealing state; when the radial deflection amount generated at the third sealing member 7 is 0.9A, the third sealing member 7 can maintain a proper sealing state, at this time, the first sealing member 6 can maintain the sealing of the deflection state through the spherical pressing sealing, and at the second sealing member 9, the radial deflection amount generated is about 0.67A, the deflection amount can be limited within the allowable deflection range, and the deflection amount can be smaller, and the spigot pipe 3 can maintain a normal and effective sealing state.

[0044] In addition, even if the radial deflection amount at the third sealing member 7 is slightly larger than the allowable deflection range A, since the deflection amplitude generated at the second sealing member 9 is smaller, the effective sealing effect can be maintained at all times.

[0045] Specifically, in the present embodiment, the spigot pipe group 200 includes the spigot pipe 2, the connecting sleeve one 4 and the connecting sleeve two 5, wherein one end of the spigot pipe 2 is welded and fixed with the medium pipe 1.

[0046] The first sealing member 6 is installed between the connecting sleeve one 4 and the socket pipe 2, and the second sealing member 9 is installed between the connecting sleeve two 5 and the connecting sleeve one 4. The spigot pipe 3 penetrates through the connecting sleeve one 4, the connecting sleeve two 5, the first sealing member 6 and the second sealing member 9, and is inserted into the socket pipe 2. The end of the spigot pipe 3 inserted into the socket pipe 2 is sealed by the third sealing member 7 between the inner periphery of the socket pipe 2 and the outer periphery of the spigot pipe 3. The socket pipe set 200 is connected by threadedly sleeving the components, and the three sealing members are assembled between the spigot pipe 3 and the socket pipe set 200 to form a three-seal structure.

[0047] Referring to Figure 5 , Figure 6 The sealing taper surface one 22 is formed on the inner periphery of the socket pipe 2 towards the spigot pipe 3, and the stepped surface one 32 is formed on the outer periphery of the spigot pipe 3 towards the socket pipe 2. After the spigot pipe 3 is inserted into the socket pipe 2, the two ends of the third sealing member 7 are pressed against the sealing taper surface one 22 and the stepped surface one 32, respectively. The sealing taper surface two 71 is formed on the end of the third sealing member 7, and the sealing taper surface two 71 and the sealing taper surface one 22 are adapted to each other by pressing. After pressing, the third sealing member 7 is centered and positioned. The third sealing member 7 is sleeved on the outer periphery of the spigot pipe 3 and the inner periphery of the socket pipe 2. The spigot pipe 3, the third sealing member 7 and the socket pipe 2 are radially limited in position, and the deflection of the spigot pipe 3 is limited.

[0048] The socket pipe 2 includes a socket end surface 21, which is the end of the socket pipe 2 away from the medium pipe 1. The connecting sleeve one 4 is sleeved on the outer periphery of the socket pipe 2 and is threadedly connected to the outer periphery of the socket pipe 2. The limiting convex ring one 41 is integrally connected to the inner periphery of the connecting sleeve one 4. The limiting convex ring one 41 has a stepped surface towards the socket end surface 21. The first sealing member 6 is nested in the inner periphery of the connecting sleeve one 4 during installation. The outer periphery of the first sealing member 6 is adapted to the inner periphery of the connecting sleeve one 4. The outer periphery of the first sealing member 6 and the inner periphery of the connecting sleeve one 4 are pressed against each other to achieve radial limitation.

[0049] During the threaded connection of the connecting sleeve one 4, the limiting convex ring one 41 of the connecting sleeve one 4 and the socket end surface 21 are close to each other. The two side surfaces of the first sealing member 6 are pressed against the socket end surface 21 and the limiting convex ring one 41, respectively, and are limited in position by pressing.

[0050] In order to facilitate the installation of the first seal 6, the first seal 6 is divided into two halves, specifically including two annular halves 61, the inner periphery of the two halves 61 is formed with a spherical convex surface 31, and is distributed along the axial direction. The two halves 61 are respectively sleeved on both sides of the spherical convex surface 31, and the spherical convex surface 31 on the inner periphery of the half 6 is pressed against the spherical convex surface 31, so that a pressing seal can be formed, and a spherical surface type yawing action can be realized. In the case of spherical head type yawing, the sealing state can be maintained at all times.

[0051] The connecting sleeve one 4 is integrally connected with a connecting convex ring 42 at the end away from the socket pipe 2. The connecting sleeve two 5 is partially sleeved on the outer periphery of the connecting convex ring 42 and is threadedly connected to the connecting convex ring 42. The connecting sleeve two 5 is integrally connected with a limiting convex ring two 51 on the inner periphery, and the limiting convex ring two 51 is formed with a stepped surface facing the connecting convex ring 42.

[0052] The second seal 9 is nested on the inner periphery of the connecting sleeve two 5, and the outer periphery of the second seal 9 can be sealed against the inner periphery of the connecting sleeve two 5 to form a radial limiting; the inner periphery of the second seal 9 is sealingly sleeved on the outer periphery of the spigot pipe 3, and a radial pressing limiting is formed between the outer periphery of the spigot pipe 3, the second seal 9 and the inner periphery of the connecting sleeve two 5, thereby limiting the radial yawing of the spigot pipe 3 at the second seal 9.

[0053] During installation, the two ends of the second seal 9 can be pressed and sealed by the connecting convex ring 42 and the limiting convex ring two 51 respectively, and during the screwing of the connecting sleeve two 5, the connecting convex ring 42 and the limiting convex ring two 51 will move closer to each other, thereby forming a pressing seal on the two ends of the second seal 9 to maintain the connection sealing at the second seal 9.

[0054] Specifically, a sealing conical surface two 43 is formed on the inner periphery of the side of the connecting convex ring 42 facing the second seal 9; and a sealing conical portion one 92 is formed on the outer periphery of the end of the second seal 9 facing the sealing conical surface two 43, part of the sealing conical portion one 92 can be embedded into the inner periphery of the sealing conical surface two 4, and through the conical structure, axial and radial positioning limiting can be realized to realize the axial pressing sealing at the second seal 9.

[0055] In addition, a ring convex portion 91 is integrally connected to the inner periphery of the second seal 9, and a corresponding sealing ring groove 33 is formed on the outer periphery of the spigot pipe 3, and the size of the sealing ring groove 33 and the ring convex portion 91 are matched with each other. During installation, the ring convex portion 91 can be embedded into the sealing ring groove 33 to form a sleeving seal between the inner periphery of the second seal 9 and the outer periphery of the spigot pipe 3. Through the second seal 9, the sealing between the connecting convex ring 42, the connecting sleeve two 5 and the spigot pipe 3 can be realized.

[0056] Embodiment two

[0057] This embodiment discloses a compressor damping joint structure. Based on the first embodiment, Figures 7-9 Provide detailed explanation.

[0058] This embodiment further includes a medium pipe 1, a socket pipe 2 and the medium pipe 1, which are welded and fixed to each other and communicate with each other, and an extension sleeve 8 is integrally welded to the side of the medium pipe 1 facing away from the socket pipe 2. The medium pipe 1, the socket pipe 2, and the extension sleeve 8 can be welded to each other to form a four-way joint structure.

[0059] In this embodiment, the extension sleeve 8 is coaxially arranged with the socket pipe 2. In addition, an extension pipe section 34 is integrally connected to one end of the spigot pipe 3 extending into the socket pipe 2, and the extension pipe section 34 can form an extension of the pipe end at the end of the spigot pipe.

[0060] The extension pipe section 34 passes through the medium pipe 1 and extends into the extension sleeve 8. A fourth seal 10 is mounted between the extension sleeve 8 and the extension pipe section 34. The inner and outer peripheries of the fourth seal 10 respectively abut the extension pipe section 34 and the extension sleeve 8. The outer periphery of the extension pipe section 34 and the inner periphery of the fourth seal 10 are mutually fitted and pressed, and the outer periphery of the fourth seal 10 and the inner periphery of the extension sleeve 8 are mutually fitted and pressed, forming a radial pressure limit between the extension pipe section 34, the fourth seal 10, and the extension sleeve 8.

[0061] The fourth seal 10 can again form a deflection limit for the socket tube 3 at the extension sleeve 8; moreover, since the axial distance between the fourth seal 10 and the first seal 6 is L3, which is greater than L2, the distance from the first seal 6 is farther.

[0062] By setting a spherical sealing connection joint between the medium pipe 1 and the socket pipe group 200, a ball-shaped swing adjustment structure can be realized between the socket pipe 3 and the first seal 6, which can concentrate the vibration deflection at the socket pipe 3 at the position of the first seal 6.

[0063] The fourth seal 10 can be used to limit the position at a position farther away from the center pad of the deflection, and the fourth seal 10 can form a radial deflection limit at the extension pipe section 34 of the spigot pipe 3, thereby further reducing the radial deflection amplitude at the second seal 9 and the third seal 7, further improving the stability of the spigot pipe 3 during vibration deflection, and maintaining the sealing effect between the spigot pipe 3 and the socket pipe 2.

[0064] In addition, a communication hole 35 is opened at a position corresponding to the medium pipe 1 on the outer circumference of the extended pipe section 34, and the medium can be circulated between the socket pipe 3 and the medium pipe 1 through the communication hole 35, thereby ensuring normal medium circulation.

[0065] Reference Figure 8 、Figure 9 As shown, an annular groove 103 is formed at the end of the extension sleeve 8 facing away from the medium pipe 1. A sealing tapered surface 3 104 is formed on the side of the annular groove 103 that is closer to the medium pipe 1. A sealing tapered portion 3 102 is also formed on the outer end surface of the fourth sealing member 10. During installation, the fourth sealing member 10 is embedded in the inner circumference of the annular groove 103. The sealing tapered portion 3 102 and the sealing tapered surface 3 104 can press against each other to limit position, achieving axial and radial positioning through the tapered structure.

[0066] A threaded sleeve 101 is also threadedly connected to the outer periphery of the extension pipe section 34. During the threaded tightening process, the threaded sleeve 101 can form axial pressure at the end face of the fourth seal 10, and then the two ends of the fourth seal 10 can be limited by the sealing cone surface three 104 and the threaded sleeve 101 respectively, so as to maintain the clamping stability of the fourth seal 10.

[0067] In addition, a port is formed at one end of the extension sleeve 8 away from the medium pipe 1, and an end cover 11 is installed at the port of the extension sleeve 8. The end cover 11 can cover the port of the extension sleeve 8, and a fifth sealing member 111 is used to seal between the port of the extension sleeve 8 and the end cover 11 to maintain the sealing effect at the port of the extension sleeve 8.

[0068] Example 3

[0069] This embodiment also discloses a dual compressor circulation system of a refrigeration unit. Figures 1-3 Provide detailed explanation.

[0070] In this embodiment, the dual-compressor circulation system of the refrigeration unit includes two sets of compressors 100 and a medium pipe 1 for refrigerant circulation. Both sets of compressors 100 are provided with a refrigerant output pipe 1001, and the refrigerant output pipe 1001 is connected to the medium pipe 1 through the above-mentioned compressor shock-absorbing joint structure.

[0071] Through the above-mentioned compressor shock-absorbing joint structure, a shock-absorbing connection can be achieved between the refrigerant output pipe 1001 of the compressor 100 and the medium pipe 1, which can maintain the stability of the connection. On the one hand, it can reduce the impact of the vibration generated by the compressor 100 on the vibration of the pipeline of the medium pipe 1. On the other hand, it can also maintain the sealing of the connection when subjected to vibration, reducing the impact of leakage caused by vibration.

[0072] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-described embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A compressor damping joint structure, characterized in that: The invention comprises a socket pipe group (200), a spigot pipe (3), a first seal (6), a second seal (9) and a third seal (7), one end of the spigot pipe (3) is inserted into the socket pipe group (200), and three seals are formed by the first seal (6), the second seal (9) and the third seal (7), the first seal (6), the second seal (9) and the third seal (7) are arranged along the axial direction of the spigot pipe (3), the first seal (6) is located between the second seal (9) and the third seal (7), the spigot pipe (3) passes through the inner circumference of the first seal (6), and the inner circumference of the first seal (6) forms a spherical concave surface (61); the outer circumference of the spigot pipe (3) is formed with a spherical convex surface (31), the spherical convex surface (31) is embedded in the spherical concave surface (6), the spherical convex surface (31) and the spherical concave surface (61) are sealed and adapted to each other and can deflect the spherical heads of each other.

2. A compressor damping joint structure according to claim 1, characterized in that: The second sealing member (9) is located on the side of the first sealing member (6) facing the spigot (3); along the axial direction of the spigot (3), the distance between the first sealing member (6) and the third sealing member 7 is L1, and the distance between the first sealing member (6) and the second sealing member 9 is L2, and L1>L2.

3. A compressor damping joint structure according to claim 3, characterized in that: L1>1.5·L2.

4. The compressor damping joint structure according to claim 1, characterized in that: The bell pipe assembly (200) comprises a bell pipe (2), a connecting sleeve 1 (4) and a connecting sleeve 2 (5); the connecting sleeve 1 (4) is threadedly connected to the outer periphery of the end of the bell pipe (2); a first sealing member (6) is installed between the connecting sleeve 1 (4) and the bell pipe (2); The second connecting sleeve (5) is threadedly connected to one end of the first connecting sleeve (4) facing away from the socket pipe (2), and a second sealing member (9) is installed between the second connecting sleeve (5) and the first connecting sleeve (4); The spigot pipe (3) passes through the first connecting sleeve (4), the second connecting sleeve (5), the first sealing member (6) and the second sealing member (9), and is inserted into the socket pipe (2). One end of the spigot pipe (3) inserted into the socket pipe (2) is sealed with the inner circumference of the socket pipe (2) by the third sealing member (7).

5. A compressor damping joint structure according to claim 4, characterized in that: The inner periphery of the socket pipe (2) is formed with a sealing cone surface (22) facing the spigot pipe (3), and the outer periphery of the spigot pipe (3) is formed with a stepped surface (32) facing the socket pipe (2). Both ends of the third sealing member (7) are pressed and sealed by the sealing cone surface (22) and the stepped surface (32) respectively. The inner periphery of the third sealing member (7) is sealingly sleeved on the outer periphery of the spigot pipe (3), and the outer periphery of the third sealing member (7) is sealingly sleeved on the inner periphery of the socket pipe (2).

6. The compressor damping joint structure according to claim 4, characterized in that: The bell pipe (2) includes a bell end face (21), the connecting sleeve (4) is threadedly connected to the outer periphery of the bell pipe (2), the inner periphery of the connecting sleeve (4) is integrally connected to a limiting convex ring (41), the first sealing member (6) is nested in the inner periphery of the connecting sleeve (4), and is pressed and sealed by the bell end face (21) and the limiting convex ring (41); The first sealing member (6) comprises two annular half bodies (61), the inner peripheries of the two half bodies (61) are both formed with spherical convex surfaces (31), and the two half bodies (61) are respectively fitted on both sides of the spherical convex surfaces (31).

7. The compressor damping joint structure according to claim 4, characterized in that: One end of the connecting sleeve (4) facing away from the socket pipe (2) is integrally connected with a connecting convex ring (42); The second connecting sleeve (5) is threadedly connected to the connecting convex ring (42), and the inner circumference of the second connecting sleeve (5) is integrally connected to the second limiting convex ring (51). The second sealing member (9) is nested in the inner circumference of the second connecting sleeve (5) and is pressed and sealed by the connecting convex ring (42) and the second limiting convex ring (51).

8. The compressor damping joint structure according to claim 4, characterized in that: It also includes a medium pipe (1), wherein the socket pipe (2) and the medium pipe (1) are welded and fixed to each other and are in communication with each other; An extension sleeve (8) is connected to the side of the medium pipe (1) facing away from the socket pipe (2), and the extension sleeve (8) is coaxially arranged with the socket pipe (2). One end of the socket pipe (3) extending into the socket pipe (2) is integrally connected to an extension pipe section (34), and the extension pipe section (34) passes through the medium pipe (1) and extends into the extension sleeve (8); a fourth sealing member (10) is sleeved between the extension sleeve (8) and the extension pipe section (34), and the inner and outer peripheries of the fourth sealing member (10) are in contact with the extension pipe section (34) and the extension sleeve (8), respectively. A communication hole (35) is provided on the outer circumference of the extended pipe section (34) at a position corresponding to the medium pipe (1).

9. A compressor damping joint structure according to any one of claims 1 to 8, characterized in that: It also includes a refrigerant output pipe (1001) of the compressor (100), and the refrigerant output pipe (1001) is integrally connected to the socket pipe (3).

10. A dual compressor circulation system of a refrigeration unit, characterized in that: The invention comprises two sets of compressors (100) and two sets of compressor damping joint structures as claimed in claim 9, wherein the refrigerant output pipes (1001) of the two sets of compressors (100) are respectively connected to the medium pipe (1) for condensation circulation.

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