CN213578241U

CN213578241U - Multifunctional oil return device for injection thermosiphon

Info

Publication number: CN213578241U
Application number: CN202022445169.1U
Authority: CN
Inventors: 王志锋; 陈建红
Original assignee: Yileng Haoshen New Energy Shanghai Co ltd
Current assignee: Yileng Haoshen New Energy Shanghai Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-06-29
Anticipated expiration: 2030-10-28

Abstract

The utility model relates to an injection thermosiphon multifunctional oil return device, which comprises an evaporator, an injector, a compressor and a cooling heat exchanger; the lower end of the evaporator is provided with an oil return interface; the oil return interface is connected with the cooling heat exchanger through a refrigerant liquid inlet pipeline; a branch pipe arranged on the refrigerant liquid inlet pipeline is connected with a bypass electromagnetic valve, and the bypass electromagnetic valve is connected with the ejector through a pipeline; a cooling pipeline electromagnetic valve is arranged between the cooling heat exchanger and the ejector and is sequentially connected with the cooling heat exchanger and the ejector through pipelines; a condensed gas electromagnetic valve and a condenser gas pipeline are sequentially arranged on one side of the ejector and are sequentially connected through pipelines; the cooling heat exchanger is connected with the oil component through an oil inlet pipeline; the compressor is connected with the cooling heat exchanger through an oil outlet pipeline; the compressor is connected with the upper end of the evaporator through the air suction pipe; the ejector is connected to the air suction pipe through an ejector medium-pressure outlet pipeline.

Description

Multifunctional oil return device for injection thermosiphon

Technical Field

The utility model belongs to the technical field of the heat exchanger technique and specifically relates to a multi-functional oil return device of thermosiphon is drawn to low pressure.

Background

In heat pump set or similar heat pump set, need to pour into lubricating oil into to the compressor, reach the effect of lubrication, cooling and sealing, thereby guarantee compressor efficiency and unit reliability, the lubricating oil that gets into the compressor is majorly sprayed and gets into the exhaust duct along with the refrigerant under the pressure effect, then get into the system, because heat pump set's pressure ratio is big, exhaust temperature is high, the oil temperature also can rise thereupon, the viscosity reduces, at this moment the oil temperature needs to obtain fine control, the lubricating oil that gets into the system also need get back to the compressor through some mode simultaneously, otherwise long-time operation also can lead to the compressor fuel feeding not enough.

At present, oil temperature control and an oil return system are respectively realized through independent devices, the oil temperature control independently uses a heat exchanger to cool liquid coming out from a condenser, and another independent oil cooler is used in the oil return device: during independent thermosiphon oil return, the cooling flow of the refrigerant cannot meet the requirement of oil cooling under the working condition of the heat pump; the oil return effect of the directly sucked oil return is poor when the compressor is under low load; the oil return of the air pump only can play an oil return effect and cannot meet the oil cooling function.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides an draw and penetrate and multi-functional oil returning device of thermosyphon, reduce cost improves cold efficiency of oil and system performance.

The utility model provides a technical scheme that its technical problem adopted is: an injection thermosiphon multifunctional oil return device comprises an evaporator, an injector, a compressor and a cooling heat exchanger; the lower end of the evaporator is provided with an oil return interface; the oil return interface is connected with the cooling heat exchanger through a refrigerant liquid inlet pipeline; the compressor is connected with the cooling heat exchanger through an oil outlet pipeline; the compression is connected with the upper end of the evaporator through an air suction pipe; a branch pipe is arranged on the refrigerant liquid inlet pipeline and is connected with a bypass electromagnetic valve; the bypass electromagnetic valve is connected with the ejector through a pipeline; the ejector is connected to the air suction pipe through an ejector medium-pressure outlet pipeline; a cooling pipeline electromagnetic valve is arranged between the cooling heat exchanger and the ejector and is sequentially connected with the cooling heat exchanger and the ejector through pipelines; a condensed gas electromagnetic valve and a condenser gas pipeline are sequentially arranged on one side of the ejector and are sequentially connected through pipelines; the cooling heat exchanger is connected with the oil tank through an oil inlet pipeline.

Preferably, the ejector is provided with three connecting ports, namely a low-pressure inlet, a high-pressure inlet and a medium-pressure outlet.

Preferably, the cooling pipeline electromagnetic valve and the bypass electromagnetic valve are both connected with the ejector through a pipeline through a low-pressure inlet of the ejector.

Preferably, the condensed gas electromagnetic valve is connected with the ejector through a pipeline through an ejector high-pressure interface.

Preferably, the ejector medium-pressure outlet pipeline is connected with the ejector through the ejector medium-pressure outlet.

Preferably, the cooling heat exchanger is one of a plate heat exchanger, a double pipe heat exchanger, a plate and shell heat exchanger, and a shell and tube heat exchanger.

Preferably, the oil outlet pipeline and the oil tank are both provided with an oil temperature sensor

The utility model discloses the beneficial effect who produces is: the injection and the thermosiphon are combined into one device, the functions of the injection and the thermosiphon are integrated, the number of parts is reduced, the structure of the device is more compact, the cost is effectively reduced, and the reliability of the device is improved. Compare in traditional cooling oil return device, the utility model provides a draw and penetrate multi-functional oil return device of thermosyphon's temperature control and oil return effect all more outstanding, can both guarantee the stable oil return of cold effect of oil and system in heat pump set's long-time work.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of an improved structure of the present invention;

in the figure: 1-an evaporator; 2-an oil return interface; 3-condenser gas line; 4-refrigerant liquid inlet line; 5-cooling the heat exchanger; 6-ejector medium pressure outlet pipeline; 7-oil inlet line; 8-an oil outlet line; 9-bypass electromagnetic valve; 10-a compressor; 11-cooling line solenoid valves; 12-an oil tank; 13-suction pipe; 14-condensed gas solenoid valve; 15-ejector.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example 1

As shown in fig. 1, the multifunctional oil return device with ejection thermosiphon comprises an evaporator 1, an ejector 15, a compressor 10 and a cooling heat exchanger 5; the lower end of the evaporator 1 is provided with an oil return interface 2; the oil return interface 2 is connected with a cooling heat exchanger 5 through a refrigerant liquid inlet pipeline 4; the compressor 10 is connected with the cooling heat exchanger 5 through an oil outlet pipeline 8; the compressor 10 is connected with the upper end of the evaporator 1 through the air suction pipe 6; a branch pipe is arranged on the refrigerant liquid inlet pipeline 4 and is connected with a bypass electromagnetic valve 9; the bypass electromagnetic valve 9 is connected with the ejector 15 through a pipeline; the ejector 15 is connected into the air suction pipe 6 through an ejector medium-pressure outlet pipeline 13; a cooling pipeline electromagnetic valve 11 is arranged between the cooling heat exchanger 5 and the ejector 15 and is sequentially connected through a pipeline; a condensed gas electromagnetic valve 14 and a condenser gas pipeline 3 are sequentially arranged on one side of the ejector 15 and are sequentially connected through pipelines; the cooling heat exchanger 5 is connected to an oil tank 12 via an oil inlet line 7.

Specifically, the ejector 15 has three connectors, namely a low-pressure inlet, a high-pressure inlet and a medium-pressure outlet. And the cooling pipeline electromagnetic valve 11 and the bypass electromagnetic valve 9 are both connected with the ejector 15 through pipelines through an ejector low-pressure inlet. The condensed gas electromagnetic valve 14 is connected with the ejector 15 through a pipeline through an ejector high-pressure connector. And the ejector medium-pressure outlet pipeline 13 is connected with the ejector 15 through an ejector medium-pressure outlet. Oil temperature sensors are arranged in the oil outlet pipeline 8 and the oil tank 12, so that the oil temperature and the cooling effect of the cooler can be detected in real time, and real-time regulation and control are conveniently performed.

The utility model provides a draw and penetrate multi-functional oil return device of thermosyphon can realize following three kinds of functions with the help of self structure:

function 1: the mixture of refrigerant liquid and oil enters a refrigerant liquid inlet pipeline 4 from an evaporator 1 through an oil return connector 2 arranged at the bottom of the evaporator, the mixture of refrigerant liquid and oil enters a cooling heat exchanger 5 through the refrigerant liquid inlet pipeline 4 and exchanges heat with high-temperature oil to be evaporated into gas, and then the gas enters a compressor 10 or an air suction pipe 13 through a low-pressure inlet pipeline of an ejector 15. High-temperature oil enters the cooling heat exchanger 5 from the oil tank 12 through the oil inlet pipeline 7 to be cooled by refrigerant liquid, and then enters the compressor 10 through the oil outlet pipeline 8, so that the functions of thermosiphon oil cooling and evaporation oil return are realized.

Function 2: the refrigerant liquid and oil mixture enters a refrigerant liquid inlet pipeline 4 from the evaporator 1 through an oil return interface 2 arranged at the bottom of the evaporator, the refrigerant liquid and oil mixture enters a bypass electromagnetic valve 9 through the refrigerant liquid inlet pipeline 4, then enters a compressor 10 or an air suction pipe 13 through a low-pressure inlet pipeline of an ejector 15, a condensed gas electromagnetic valve 14 is opened, high-pressure gas refrigerant in a condensed gas pipeline 3 enters the ejector 15, and the ejector works. The high temperature oil enters the cooling heat exchanger 5 from the oil tank 12 through the oil inlet line 7, where it is not cooled by the refrigerant liquid, and then enters the compressor 10 through the oil outlet line 8, performing a separate evaporation oil return function.

Function 3: combining function 1 and function 2, refrigerant liquid and oil mixture get into refrigerant liquid inlet pipeline 4 from evaporimeter 1 through setting up oil return interface 2 in the evaporimeter bottom, refrigerant liquid and oil mixture get into cooling heat exchanger 5 through refrigerant liquid inlet pipeline 4, open cooling pipeline solenoid valve 11, close bypass solenoid valve 9, then get into compressor 10 or breathing pipe 13 through ejector 15 low pressure inlet pipeline, open condensation gas solenoid valve 14, high pressure gas refrigerant gets into ejector 15 in the condensation gas pipeline 3, improve evaporimeter bottom oil and refrigerant mixture flow. The high temperature oil enters the cooling heat exchanger 5 from the oil tank 12 through the oil inlet line 7, at which time the oil is cooled by a large amount of refrigerant liquid, and then enters the compressor 10 through the oil outlet line 8, achieving a maximum flow cooling effect and an oil return function.

Example 2

As shown in fig. 2, the improved structure of the present invention can realize the same function as the structure of fig. 1, and the difference from the structure of fig. 1 lies in that the installation position of the cooling pipeline electromagnetic valve 11 is located on the inlet pipeline 4 of the cooling heat exchanger, and the electromagnetic valve used here is a liquid fluid electromagnetic valve, so that the sealing effect is better, and the overall cost is lower.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims

1. The utility model provides a draw multi-functional oil return device of thermal siphon that penetrates which characterized in that: comprises an evaporator (1), an ejector (15), a compressor (10) and a cooling heat exchanger (5); the lower end of the evaporator (1) is provided with an oil return interface (2); the oil return interface (2) is connected with the cooling heat exchanger (5) through a refrigerant liquid inlet pipeline (4); the compressor (10) is connected with the cooling heat exchanger (5) through an oil outlet pipeline (8); the compressor (10) is connected with the upper end of the evaporator (1) through the air suction pipe (6); a branch pipe (9) connected with a bypass electromagnetic valve is arranged on the refrigerant liquid inlet pipeline (4); the bypass electromagnetic valve (9) is connected with the ejector (15) through a pipeline; the ejector (15) is connected into the air suction pipe (6) through an ejector medium-pressure outlet pipeline (13); a cooling pipeline electromagnetic valve (11) is arranged between the cooling heat exchanger (5) and the ejector (15), and the cooling heat exchanger, the ejector and the ejector are sequentially connected through a pipeline; a condensed gas electromagnetic valve (14) and a condenser gas pipeline (3) are sequentially arranged on one side of the ejector (15) and are sequentially connected through a pipeline; the cooling heat exchanger (5) is connected with the oil tank (12) through an oil inlet pipeline (7).

2. The multifunctional oil return device for injection thermosiphon as claimed in claim 1, wherein: the ejector (15) is provided with a low-pressure inlet, a high-pressure inlet and a medium-pressure outlet.

3. The multifunctional oil return device for injection thermosiphon as claimed in claim 2, wherein: and the cooling pipeline electromagnetic valve (11) and the bypass electromagnetic valve (9) are both connected with the ejector (15) through pipelines through an ejector low-pressure inlet.

4. The multifunctional oil return device for injection thermosiphon as claimed in claim 2, wherein: the condensed gas electromagnetic valve (14) is connected with the ejector (15) through a pipeline through an ejector high-pressure interface.

5. The multifunctional oil return device for injection thermosiphon as claimed in claim 2, wherein: and the ejector medium-pressure outlet pipeline (13) is connected with the ejector (15) through an ejector medium-pressure outlet.

6. The multifunctional oil return device for injection thermosiphon as claimed in claim 1, wherein: the cooling heat exchanger (5) is one of a plate heat exchanger, a sleeve type heat exchanger, a plate shell type heat exchanger and a shell and tube type heat exchanger.

7. The multifunctional oil return device for injection thermosiphon as claimed in claim 1, wherein: oil temperature sensors are respectively arranged in the oil outlet pipeline (8) and the oil tank (12).