CN221098807U - Jet pipe, oil return ejector and air conditioner - Google Patents

Abstract

The utility model discloses a jet pipe, an oil return ejector and an air conditioner. The jet pipe comprises: a jet outer tube, one end of which is open, and the other end face of which is provided with a plurality of first nozzles; the jet inner pipe is sleeved in the jet outer pipe, the outer wall of the jet inner pipe is provided with a bulge, the inner wall of the jet outer pipe is provided with a chute corresponding to the bulge, one end of the jet inner pipe is a jet inlet, and the other end of the jet inner pipe is provided with a plurality of second nozzles; the elastic piece is arranged in the chute, when the flow is large, the outer end face of the other end of the jet inner pipe is bonded with the inner end face of the other end of the jet outer pipe, the elastic piece is compressed, and part of the first nozzle is overlapped with part of the second nozzle. When the pressure difference of the oil return ejector provided by the utility model is reduced, the force applied to the jet inner pipe is smaller than the elastic force of the spring, the inner pipe is restored to the initial state under the action of the spring force, and the flow is increased. The function of automatically adjusting the injection quantity under the condition of pressure difference change is realized by the reciprocation.

Description

Jet pipe, oil return ejector and air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a jet pipe, an oil return ejector and an air conditioner.

Background

In order to ensure long-term efficient operation of the compressor in the operation process of the refrigerating unit, enough lubricating oil is needed inside the compressor to ensure smooth operation of the compressor, but because of the structural form of the compressor, the lubricating oil inside the compressor can run away to other containers of the unit along with exhaust, so that the efficiency of the compressor is reduced, the abrasion of a rotor inside the compressor is increased, and the service life is reduced. Therefore, compressor oil return becomes important. In the current method for realizing oil return of the compressor, a relatively large number of ejector structures are used, high-pressure oil is ejected through a jet pipe, negative pressure is formed between the high-pressure oil and low-pressure oil of an inlet pipe, the oil in the inlet pipe is sucked into an outlet pipe cavity, and the oil returns to the compressor along with the high-pressure oil, so that the ejection oil return is completed. According to the injection principle, when the flow quantity becomes large, the introduced quantity becomes large. In practice, however, the amount of introduction is inversely proportional to the amount of jet flow, i.e., the greater the flow in the jet pipe, the less flow needs to be introduced. The flow rate of the jet pipe is related to the liquid pressure of the jet pipe, and the larger the pressure is, the more the flow rate in unit area is. Therefore, in order to achieve balance, when the pressure difference is large, the jet pipe orifice diameter needs to be reduced to achieve the purpose of reducing the introduction amount. The jet diameter of each jet pipe of the current ejector is fixed, and ejectors with different specifications are required to be replaced when the pressure difference changes.

Disclosure of utility model

The utility model provides a jet pipe, an oil return ejector and an air conditioner, which aim to solve the technical problem that the nozzle of the jet pipe in the prior art cannot be fixed according to pressure difference.

The technical scheme adopted by the utility model is as follows:

The utility model proposes a jet pipe comprising:

A jet outer tube, one end of which is open, and the other end face of which is provided with a plurality of first nozzles;

The jet inner pipe is sleeved in the jet outer pipe, the outer wall of the jet inner pipe is provided with a bulge, the inner wall of the jet outer pipe is provided with a chute corresponding to the bulge, one end of the jet inner pipe is a jet inlet, and the other end of the jet inner pipe is provided with a plurality of second nozzles;

the elastic piece is arranged in the sliding groove, when the flow rate of the jet inlet is high, the outer end face of the other end of the jet inner pipe is bonded with the inner end face of the other end of the jet outer pipe, the elastic piece is compressed, and part of the first nozzle is overlapped with part of the second nozzle.

Further, the bulge is an annular bulge, and the chute is an annular chute.

Preferably, a plurality of first nozzles are positioned in the middle of the jet outer tube and are transversely communicated, and a plurality of second nozzles are positioned in the middle of the jet inner tube and are vertically communicated.

Further, when the outer end face of the other end of the jet inner pipe is attached to the inner end face of the other end of the jet outer pipe, one first nozzle located in the middle overlaps with one second nozzle located in the middle.

The elastic piece is a spring, and the spring is sleeved outside the jet inner pipe and is positioned in the chute.

The utility model also provides an oil return ejector comprising the jet pipe.

The oil return ejector comprises: and the injection pipe is arranged on the end face of the other end of the jet flow outer pipe.

Furthermore, the side surface of the injection pipe is provided with an introduction port close to the injection pipe, and one end of the injection pipe, which is opposite to the injection pipe, is an introduction port.

Further, the injection pipe is internally and sequentially divided into an inlet section, an excess section and an outlet section, the inlet section is positioned near one end of the injection pipe and is communicated with the inlet interface, the inner diameter of the excess section in the direction of the outlet section is gradually reduced, and the outlet section in the direction of the outlet port is gradually enlarged to be in a flaring shape.

The utility model also provides an air conditioner comprising the oil return ejector.

Compared with the prior art, the jet inner pipe capable of moving in the jet outer pipe is arranged, when the flow rate is high, liquid flowing in from the jet inlet at one end of the jet inner pipe impacts the inner end surface at the other end of the jet inner pipe, so that the jet inner pipe moves towards the other end, the elastic piece is compressed, the outer end surface at the other end of the jet inner pipe is attached to the inner end surface at the other end of the jet outer pipe, at the moment, the first nozzle and the second nozzle which are opposite in position can be overlapped in position and can pass through liquid, the first nozzle and the second nozzle which are not corresponding in position can not pass through liquid, namely, the diameter of the jet pipe nozzle is reduced, and the aim of reducing the introducing amount is achieved. When the liquid flow is reduced, the impact force of the liquid flowing in from the jet inlet at one end of the jet inner pipe is reduced from large, the elastic piece is reset, the jet inner pipe moves to one end, a gap is formed between the outer end face of the other end of the jet inner pipe and the inner end face of the other end of the jet outer pipe, and at the moment, all the first nozzles and the second nozzles can be increased through the liquid, namely the diameter of the jet pipe nozzle is increased, so that the purposes of reducing the flow and increasing the introducing amount are achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a structure in an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a jet outer tube in an embodiment of the utility model;

FIG. 3 is a schematic view of the structure of an inner tube of a jet flow in an embodiment of the utility model;

FIG. 4 is a schematic view of a prior art ejector;

1. a jet outer tube;

11. a first spout;

2. a jet inner tube;

21. a second spout;

22. an annular protrusion;

3. An ejector tube;

31. An injection interface;

32. an outlet port;

33. An introduction section;

34. A transition section;

35. and an extraction section.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The principles and structures of the present utility model are described in detail below with reference to the drawings and the examples.

In order to ensure long-term efficient operation of the compressor in the operation process of the refrigerating unit, enough lubricating oil is needed inside the compressor to ensure smooth operation of the compressor, but because of the structural form of the compressor, the lubricating oil inside the compressor can run away to other containers of the unit along with exhaust, so that the efficiency of the compressor is reduced, the abrasion of a rotor inside the compressor is increased, and the service life is reduced. Therefore, compressor oil return becomes important. In the current method for realizing oil return of the compressor, a relatively large number of ejector structures are used, high-pressure oil is ejected through a jet pipe, negative pressure is formed between the high-pressure oil and low-pressure oil of an inlet pipe, the oil in the inlet pipe is sucked into an outlet pipe cavity, and the oil returns to the compressor along with the high-pressure oil, so that the ejection oil return is completed. According to the injection principle, when the flow quantity becomes large, the introduced quantity becomes large. In practice, however, the amount of introduction is inversely proportional to the amount of jet flow, i.e., the greater the flow in the jet pipe, the less flow needs to be introduced. The flow rate of the jet pipe is related to the liquid pressure of the jet pipe, and the larger the pressure is, the more the flow rate in unit area is. Therefore, in order to achieve balance, when the pressure difference is large, the jet pipe orifice diameter needs to be reduced to achieve the purpose of reducing the introduction amount. As shown in fig. 4, the jet diameter of each jet pipe of the currently used ejector is fixed, and the ejectors with different specifications need to be replaced when the pressure difference changes. In contrast, the jet pipe arranged on the oil return ejector can reduce the diameter of a jet pipe nozzle when the pressure difference is large, and reduce the introduction quantity.

As shown in fig. 1, the present utility model proposes a jet pipe, which specifically includes: the jet flow outer tube 1, the jet flow inner tube 2 and the elastic piece, wherein one end of the jet flow outer tube 1 is opened, the end face of the other end is a closed plane, a plurality of first nozzles 11 are arranged on the closed end face, and a chute is arranged on the inner wall of the jet flow outer tube 1; the jet inner pipe 2 is sleeved in the jet outer pipe 1, the outer side wall of the jet inner pipe 2 is attached to the inner wall of the jet outer pipe 1 and covers the sliding groove, the outer wall surface of the jet inner pipe 2 is provided with a bulge which stretches into the sliding groove, one end of the jet inner pipe 2 is a jet inlet, the other end of the jet inner pipe is a closed plane, the end surface of the closed end is provided with a plurality of second nozzles 21, and part of the first nozzles 11 are opposite to the positions of the second nozzles 21; the elastic component sets up in the spout, elastic component one end supports the arch at jet inner tube 2, the other end supports on the cell wall of spout, when the flow is big, the inner terminal surface of the other end of jet inner tube 2 is impacted to the liquid that flows in from the jet inlet of jet inner tube 2 one end, make jet inner tube 2 remove to the other end, the elastic component compresses, the outer terminal surface of the other end of jet inner tube 2 and the laminating of the inner terminal surface of jet outer tube 1 other end, the first spout 11 that the position is just right and second spout 21 position overlap can pass through liquid this moment, the first spout 11 that the position is not corresponding can't pass through liquid with second spout 21, jet tube spout diameter reduces promptly, reach the purpose that reduces the introduction. When the liquid flow rate becomes smaller, when the impact force of the liquid flowing in from the jet inlet at one end of the jet inner pipe 2 becomes smaller from large, the elastic piece resets, so that the jet inner pipe 2 moves to one end, a gap is formed between the outer end surface at the other end of the jet inner pipe 2 and the inner end surface at the other end of the jet outer pipe 1, and at the moment, all the first nozzles 11 and the second nozzles 21 can be increased through the liquid, namely the diameter of the jet pipe nozzle is increased, so that the purpose of increasing the introduction amount by reducing the flow rate is achieved.

In the specific embodiment, as shown in fig. 2 and 3, the protrusion is an annular protrusion 22 arranged on the outer wall surface of the jet inner tube 2, and the chute is a corresponding annular chute, and the elastic member is compressed or released when the annular protrusion 22 moves along the annular chute. The internal structure of the jet pipe is stabilized by the annular protrusion 22, and liquid flows into the gap between the jet inner pipe 2 and the jet outer pipe 1.

Specifically, the elastic piece is a spring, and the spring is sleeved outside the jet inner pipe 2 and is positioned in the annular chute, so that the installation is very simple and convenient. The specific jet outer tube 1 can be in the form of a threaded sleeve, and after the jet inner tube 2 and the spring are installed, the threaded sleeve is installed in one end of the jet outer tube 1 to limit the moving path of the annular protrusion 22 of the jet inner tube 2.

In a specific embodiment, the first nozzles 11 on the jet outer tube 1 are located in the middle of the jet outer tube 1, and are transversely communicated and arranged in a row, the second nozzles 21 on the jet inner tube 2 are located in the middle of the jet inner tube 2, and are vertically arranged in one piece, when the outer end face of the other end of the jet inner tube 2 is attached to the inner end face of the other end of the jet outer tube 1, one first nozzle 11 in the middle overlaps one second nozzle 21 located in the middle, and the rest of the first nozzles 11 and the second nozzles 21 are blocked due to dislocation, which is equivalent to directly reducing the diameter of the jet tube nozzles. When the outer end surface of the other end of the jet inner pipe 2 is spaced from the inner end surface of the other end of the jet outer pipe 1, all the first nozzles 11 and the second nozzles 21 are not shielded, and the inflowing liquid can flow in the gap, so that all the first nozzles 11 and the second nozzles 21 are in a communicating state.

In addition, the jet outer tube 1 and the jet inner tube 2 can be arranged in other forms. It is within the scope of the present utility model as long as the nozzle diameter is reduced when the jet outer tube 1 is attached to the jet inner tube 2 and restored to the original nozzle diameter at intervals.

The utility model also provides an oil return ejector, which comprises a jet pipe, wherein the jet pipe specifically comprises: the jet flow outer tube 1, the jet flow inner tube 2 and the elastic piece, wherein one end of the jet flow outer tube 1 is opened, the end face of the other end is a closed plane, a plurality of first nozzles 11 are arranged on the closed end face, and a chute is arranged on the inner wall of the jet flow outer tube 1; the jet inner pipe 2 is sleeved in the jet outer pipe 1, the outer side wall of the jet inner pipe 2 is attached to the inner wall of the jet outer pipe 1 and covers the sliding groove, the outer wall surface of the jet inner pipe 2 is provided with a bulge which stretches into the sliding groove, one end of the jet inner pipe 2 is a jet inlet, the other end of the jet inner pipe is a closed plane, the end surface of the closed end is provided with a plurality of second nozzles 21, and part of the first nozzles 11 are opposite to the positions of the second nozzles 21; the elastic piece is arranged in the chute, one end of the elastic piece is propped against the bulge of the jet flow inner pipe 2, and the other end is propped against the wall of the chute.

Specifically, the oil return ejector includes: the jet pipe and the jet pipe 3 are arranged on the end face of the other end of the jet outer pipe 1, and the jet pipe 3 can be in sealing and fixing with the jet pipe in a threaded connection mode. The side surface of the injection pipe 3 is provided with an inlet port close to the injection pipe, and one end of the injection pipe opposite to the injection pipe 3 is provided with an outlet port 32.

The injection pipe 3 is internally divided into an inlet section 33, an excessive section 34 and an outlet section 35 in sequence along the length direction, the inlet section 33 is positioned at one end close to the injection pipe 3 and is communicated with an inlet interface, the inside diameter of the excessive section 34 towards the outlet section 35 is gradually reduced, and the inside diameter of the outlet section 35 towards the outlet port 32 is gradually increased to be in a flaring shape, so that the aim of injecting oil return is achieved. The utility model also provides an air conditioner comprising the oil return ejector.

When the pressure difference is small, the jet inner tube is stressed less and the spring is compressed and deformed, the jet inner tube and the jet outer tube are in an initial state, namely, the annular bulge of the jet inner tube is positioned at the left side of the annular chute of the jet outer tube, at the moment, liquid passes through the second nozzle at the end of the jet inner tube and then passes through the first nozzle at the end of the jet outer tube, at the moment, the caliber of the two nozzles is the same, the flow is larger, and the injection quantity is larger. When the pressure difference is increased, the stress of the jet inner pipe is increased, the jet inner pipe extrudes the spring under the action of pressure, so that the jet inner pipe moves rightwards along the annular chute of the jet outer pipe, the end wall of the jet inner pipe is contacted with the end wall of the jet outer pipe, and at the moment, the two nozzles are arranged in a cross shape, and other holes are covered with each other except for the center hole position (the central nozzle) of the two pipes. Therefore, only the nozzle at the center of the pipe end has liquid flow, the flow is smaller, and the injection quantity is smaller. Thereby realizing the injection principle. When the pressure difference is reduced, the force applied to the jet inner tube is smaller than the elastic force of the spring, the inner tube is restored to the initial state under the action of the spring force, and the flow is increased. The function of automatically adjusting the injection quantity under the condition of pressure difference change is realized by the reciprocation.

It is noted that the above-mentioned terms are used merely to describe specific embodiments, and are not intended to limit exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A jet tube, comprising:

A jet outer tube, one end of which is open, and the other end face of which is provided with a plurality of first nozzles;

the jet flow inner pipe is sleeved in the jet flow outer pipe, the outer wall of the jet flow inner pipe is provided with a bulge, the inner wall of the jet flow outer pipe is provided with a chute corresponding to the bulge, one end of the jet flow inner pipe is provided with a jet flow inlet, and the other end of the jet flow inner pipe is provided with a plurality of second nozzles;

the elastic piece is arranged in the sliding groove, when the flow rate of the jet inlet is high, the outer end face of the other end of the jet inner pipe is bonded with the inner end face of the other end of the jet outer pipe, the elastic piece is compressed, and part of the first nozzle is overlapped with part of the second nozzle.

2. The jet pipe of claim 1, wherein the projection is an annular projection and the chute is an annular chute.

3. The jet pipe of claim 1, wherein a plurality of the first nozzles are positioned in the middle of the jet outer pipe and are arranged in transverse communication, and a plurality of the second nozzles are positioned in the middle of the jet inner pipe and are arranged in vertical communication.

4. A jet pipe as claimed in claim 3 wherein one of said first nozzles located in the middle overlaps one of said second nozzles located in the middle when the other end outer end face of said jet inner pipe is in engagement with the inner end face of the other end of said jet outer pipe.

5. The jet pipe of claim 1, wherein the resilient member is a spring that is sleeved outside the jet inner pipe and within the chute.

6. An oil return ejector, comprising: a jet tube as claimed in any one of claims 1 to 5.

7. The return oil ejector of claim 6, comprising: and the injection pipe is arranged on the end face of the other end of the jet flow outer pipe.

8. The oil return ejector according to claim 7, wherein the side surface of the ejector tube is provided with an inlet port near the ejector tube, and the end of the ejector tube opposite to the ejector tube is an outlet port.

9. The oil return ejector according to claim 8, wherein the ejector pipe is internally and sequentially divided into an inlet section, an excess section and an outlet section, the inlet section is positioned near one end of the ejector pipe and is communicated with the inlet port, the inner diameter of the excess section is gradually reduced towards the outlet section, and the inner diameter of the outlet section is gradually increased towards the outlet port to be in a flaring shape.

10. An air conditioner comprising an oil return ejector according to any one of claims 6 to 9.