Condensation anti-backflow pipeline and condensation anti-backflow system

Abstract

The invention discloses a condensation anti-backflow pipeline and a condensation anti-backflow system, and belongs to the technical field of energy storage system liquid refrigerant backflow prevention. One end of the condensation anti-backflow pipeline is used for being communicated with an air inlet of a condenser, and the other end of the condensation anti-backflow pipeline is used for being communicated with an air outlet of a compressor. Wherein an inverted-U-shaped bent pipe is formed at the highest point of the condensation anti-backflow pipeline, and the two sides of the highest point extend downwards to be connected to an air inlet of the condenser and an air outlet of the compressor respectively. When the compressor enters a shutdown state, a liquid refrigerant in the condenser can flow back into the condensation anti-backflow pipeline from the air inlet of the condenser, and meanwhile the liquid refrigerant needs to overcome gravity resistance caused by the height between the highest point of the condensation anti-backflow pipeline and the lowest point of the condensation anti-backflow pipeline; in this way, the problems that due to wet compression of the compressor, system operation is unstable, the heat exchange effect is reduced, and potential safety hazards of operation are increased are solved.

Description

Technical Field

[0001] The present application belongs to the technical field of refrigeration equipment, and in particular relates to a condensation backflow prevention pipeline and a condensation backflow prevention system. Background Art

[0002] To ensure the safe and stable operation of the chiller, it is necessary to ensure that each component in each system operates under its own allowable normal working conditions. Among them, the compressor, as the main component, requires that there is no liquid refrigerant in the compression chamber to avoid wet compression, which will cause unstable system operation, reduced heat exchange effect, and increase operational safety hazards.

[0003] In the process of realizing the invention, the inventors found that there are at least the following problems in the prior art: when the compressor enters the shutdown state, the refrigerant in the condenser can easily flow back into the compressor, and wet compression will occur after the compressor is started next time, causing damage. Summary of the invention

[0004] The present application aims to improve the technical problem in the prior art that when the compressor enters a shutdown state, the refrigerant in the condenser can easily flow back into the compressor, causing wet compression after the compressor is started next time, leading to damage.

[0005] In a first aspect, the present application proposes a condensation backflow prevention pipeline, one end of which is used to communicate with an air inlet of a condenser, and the other end of which is used to communicate with an exhaust port of a compressor;

[0006] The condensation backflow prevention pipeline forms an inverted U-shaped bend at the highest point, and both sides of the highest point extend downward to be connected to the air inlet of the condenser and the exhaust port of the compressor respectively.

[0007] According to one embodiment of the present application, the condensation backflow prevention pipeline includes: the lowest point of the condensation backflow prevention pipeline is located on the pipeline between the highest point and the air inlet of the condenser, and the condensation backflow prevention pipeline extends upward from the lowest point to be connected to the air inlet of the condenser.

[0008] According to one embodiment of the present application, a condensation backflow prevention pipeline includes: a backflow prevention portion and a first connecting portion connected to the backflow prevention portion;

[0009] The backflow prevention portion is bent and extended from the highest point toward the lowest point; the first connection portion is bent and extended from the highest point toward the exhaust port of the compressor, and the first connection portion is used to communicate with the exhaust port of the compressor.

[0010] According to an embodiment of the present application, the first connecting portion includes: a first curved pipe section; the anti-backflow portion includes: a second curved pipe section;

[0011] The first curved pipe section is connected to the second curved pipe section, and both the first curved pipe section and the second curved pipe section are against the outer wall surface of the condenser;

[0012] According to an embodiment of the present application, the first connecting portion further includes a first extending section connected to the first curved pipe section; the backflow prevention portion further includes a first connecting pipe section connected to the second curved pipe section;

[0013] Wherein, the first connecting pipe section and the first extension section are both separated from the outer wall surface of the condenser, and the first extension section is used to connect with the exhaust port of the compressor; and / or, the distance between the first curved pipe section and the second curved pipe section is smaller than the distance between the first connecting pipe section and the first extension section.

[0014] According to an embodiment of the present application, it further includes: a second connecting portion communicated with the backflow prevention portion;

[0015] The second connection portion is bent and extended from the lowest point toward the air inlet of the condenser, and the second connection portion is used to communicate with the air inlet of the condenser.

[0016] According to one embodiment of the present application, the second connecting portion includes: a second connecting section and a third connecting section that are interconnected;

[0017] The second connecting section is communicated with the backflow prevention portion, and the second connecting section is extended toward the first direction; the third connecting section is used to communicate with the air inlet of the condenser.

[0018] According to one embodiment of the present application, it further includes: a fixing member;

[0019] The fixing member is sleeved on the second connecting portion and the outer shell of the compressor along the first direction to fix the position of the second connecting portion.

[0020] In a second aspect, the present application provides a condensation backflow prevention system, the condensation backflow prevention system comprising: the condensation backflow prevention pipeline, condenser and compressor described in any one of the above embodiments;

[0021] The condenser comprises a first condensation part and a second condensation part connected to each other, wherein the first condensation part is parallel to the first direction and forms an angle with the second condensation part;

[0022] The first condensation portion has an air inlet connected to the condensation backflow prevention pipeline; or the second condensation portion has an air inlet connected to the condensation backflow prevention pipeline.

[0023] According to an embodiment of the present application, the condensation backflow prevention pipeline is close to the outer wall surface of the condenser from the pipelines on both sides of the highest point.

[0024] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0025] In the above embodiment of the present application, when the compressor enters the shutdown state, the liquid refrigerant in the condenser will flow back from the air inlet of the condenser into the condensation backflow prevention pipeline, and the liquid refrigerant needs to overcome the gravity resistance caused by the height between the highest point of the condensation backflow prevention pipeline and the lowest point of the condensation backflow prevention pipeline to prevent the liquid refrigerant in the condenser from flowing into the exhaust port of the compressor. The present application effectively avoids the problem of wet compression damage to the compressor in a low-cost manner.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 It is a structural schematic diagram of the condensation backflow prevention system provided in an embodiment of the present application.

[0029] Reference numerals:

[0030] 10. Anti-backflow part;

[0031] 11. Second curved pipe section; 12. First connecting pipe section;

[0032] 20. a first connecting portion;

[0033] 21. first curved pipe section; 22. first extension section;

[0034] 30. a second connecting portion;

[0035] 31. second connecting section; 32. third connecting section;

[0036] 1. Condensation backflow prevention pipeline; 2. Condenser; 3. Compressor;

[0037] a. Highest point; b. Lowest point. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0039] Reference below Figure 1 The condensation backflow prevention pipeline 1 and the condensation backflow prevention system according to the embodiments of the present application are described.

[0040] The condensation backflow prevention pipeline 1 is used to prevent the gaseous refrigerant in the condenser 2 from condensing to form liquid refrigerant and flowing back, and entering the compressor 3 cavity from the exhaust port of the compressor 3, thereby avoiding wet compression of the compressor 3 and ensuring the safe and stable operation of the chiller.

[0041] The condensation backflow prevention pipeline 1 forms an inverted U-shaped bend at the highest point a, and both sides of the highest point a extend downward to be connected to the air inlet of the condenser 2 and the exhaust port of the compressor 3 respectively.

[0042] It should be noted that a height difference is formed between the highest point a of the condensation anti-backflow pipeline 1 and the lowest point b of the condensation anti-backflow pipeline 1 to prevent the liquid refrigerant in the condenser 2 from flowing into the exhaust port of the compressor 3.

[0043] In the above embodiment of the present application, when the compressor 3 enters the shutdown state, the liquid refrigerant in the condenser 2 will flow back from the air inlet of the condenser 2 into the condensation anti-backflow pipeline 1. At the same time, the liquid refrigerant needs to overcome the gravity resistance caused by the height between the highest point a and the lowest point b of the condensation anti-backflow pipeline 1 to prevent the liquid refrigerant in the condenser 2 from flowing into the exhaust port of the compressor 3.

[0044] The present application avoids the problem of wet compression of the compressor 3 causing unstable operation of the chiller, decreased heat exchange effect, and increased operational safety hazards in a low-cost manner, and can also avoid damage to the compressor 3.

[0045] In some embodiments, the lowest point b of the condensation backflow prevention pipeline 1 is located on the pipeline between the highest point a and the air inlet of the condenser 2, and the condensation backflow prevention pipeline 1 extends upward from the lowest point b to be connected to the air inlet of the condenser 2.

[0046] The condensation backflow prevention pipeline 1 comprises: a backflow prevention portion 10 and a first connecting portion 20 connected to the backflow prevention portion 10 .

[0047] The backflow prevention portion 10 is bent and extended from the highest point a toward the lowest point b; the first connection portion 20 is bent and extended from the highest point a toward the exhaust port of the compressor 3, and the first connection portion 20 is used to communicate with the exhaust port of the compressor 3.

[0048] In this embodiment, the backflow prevention portion 10 bends and extends from the highest point a toward the lowest point b, and extends upward from the lowest point b to connect to the air inlet of the condenser 2. This can increase the path length of the condensation backflow prevention pipeline 1, thereby accommodating more liquid refrigerant and preventing the liquid refrigerant from flowing into the exhaust port of the compressor 3.

[0049] Exemplarily, the first connecting portion 20 includes: a first curved pipe section 21; the anti-backflow portion 10 includes: a second curved pipe section 11;

[0050] The first curved pipe section 21 is connected to the second curved pipe section 11, and both the first curved pipe section 21 and the second curved pipe section 11 are against the outer wall surface of the condenser 2;

[0051] The first connecting portion 20 further includes a first extending section 22 communicating with the first curved pipe section 21; the anti-backflow portion 10 further includes a first connecting pipe section 12 communicating with the second curved pipe section 11;

[0052] The first connecting pipe section 12 and the first extending section 22 are both separated from the outer wall surface of the condenser 2, and the first extending section 22 is used to communicate with the exhaust port of the compressor 3;

[0053] In this example, the first connecting pipe section 12 and the first extension section 22 are separated from the outer wall surface of the condenser 2, so that the connection between the first connecting pipe section 12 and the first curved pipe section 21, and the connection between the first extension section 22 and the second curved pipe section 11 can form support points, which can better enable the first curved pipe section 21 and the second curved pipe section 11 to be abutted against the outer wall surface of the condenser 2, so as to improve the overall stability and stronger vibration resistance.

[0054] During design and implementation, the distance between the first curved pipe section 21 and the second curved pipe section 11 is smaller than the distance between the first connecting pipe section 12 and the first extending section 22 .

[0055] With such a design, on the one hand, the backflow prevention portion 10 has a larger bending extension from the highest point a to the lowest point b, and the volume of the backflow prevention portion 10 is larger, thereby being able to accommodate more liquid refrigerant; on the other hand, the distance between the first bend pipe section 21 and the second bend pipe section 11 is smaller, so that the formed inverted U-shaped bend pipe is in more firm contact with the outer wall of the condenser 2.

[0056] In some embodiments, the condensation backflow prevention pipeline 1 further includes: a second connection portion 30 connected to the backflow prevention portion 10;

[0057] The second connection portion 30 is bent and extended from the lowest point b toward the air inlet of the condenser 2 , and the second connection portion 30 is used to communicate with the air inlet of the condenser 2 .

[0058] In this embodiment, the bending and extending design of the second connecting portion 30 increases the volume, can accommodate more liquid refrigerant, and prevents the liquid refrigerant from flowing into the exhaust port of the compressor 3 .

[0059] Exemplarily, the second connecting portion 30 includes: a second connecting section 31 and a third connecting section 32 that are interconnected;

[0060] The second connecting section 31 is communicated with the backflow prevention portion 10 , and the second connecting section 31 is extended toward the first direction; the third connecting section 32 is used to communicate with the air inlet of the condenser 2 .

[0061] In this example, the first direction may be a horizontal direction, and such a design allows a support area to be formed at the connection between the second connecting segment 31 and the third connecting segment 32, and the support area is used for mounting a rope or other fixing parts to fix the second connecting portion 30 on the outer casing of the compressor 3.

[0062] For example, the condensation backflow prevention pipeline 1 further includes: a fixing member; the fixing member is sleeved on the second connecting portion 30 and the outer shell of the compressor 3 along the first direction to fix the position of the second connecting portion 30.

[0063] The present application also proposes a condensation backflow prevention system, comprising the condensation backflow prevention pipeline 1, the condenser 2 and the compressor 3 of any of the above embodiments.

[0064] The condenser 2 includes a first condensation portion 201 and a second condensation portion 202 connected to each other. The first condensation portion 201 is parallel to the first direction and forms an angle with the second condensation portion 202 .

[0065] Exemplarily, the first direction can be a horizontal direction, the first condensation section 201 extends in the horizontal direction, the second condensation section 202 is integrally formed with the first condensation section 201, and extends in a direction below the horizontal direction, and the angle between the first condensation section 201 and the second condensation section 202 can be greater than 90°, or can be 90°. This embodiment is not limited to this.

[0066] The first condensation part 201 has an air inlet connected to the condensation backflow prevention pipeline 1; or, the second condensation part 202 has an air inlet connected to the condensation backflow prevention pipeline 1.

[0067] In some embodiments, the condensation backflow prevention pipeline 1 is close to the outer wall surface of the condenser 2 from the pipelines on both sides of the highest point a.

[0068] The condensation backflow prevention system can be in at least one of the following structural forms:

[0069] First, when the air inlet is at the end of the first condensation section 201, the compressor 3 can be arranged closer to the air inlet according to the layout requirements. At the same time, one end of the condensation backflow prevention pipeline 1 is connected to the air inlet of the condenser 2, and the other end of the condensation backflow prevention pipeline 1 is connected to the exhaust port of the compressor 3 (not shown).

[0070] In this embodiment, since the first condensation section 201 is horizontally arranged, the volume of liquid refrigerant flowing out from the air inlet of the first condensation section 201 is large, and the height difference between the highest point a of the condensation anti-backflow pipeline 1 and the lowest point b of the condensation anti-backflow pipeline 1 can be adaptively reduced.

[0071] It should also be pointed out that, in the overall layout of the chiller, the compressor 3 and the condenser 2 in this embodiment will occupy a larger space in the chiller, and the space utilization rate is low.

[0072] Second, when the air inlet is at the end of the second condensation section 202, one end of the condensation backflow prevention pipeline 1 is connected to the air inlet of the condenser 2, and the other end of the condensation backflow prevention pipeline 1 is connected to the exhaust port of the compressor 3 (such as Figure 1 shown).

[0073] In this embodiment, the second condensation section 202 extends in a direction below the horizontal direction, so that the volume of liquid refrigerant flowing out from the air inlet of the second condensation section 202 is small, and the height difference between the highest point a of the condensation anti-backflow pipeline 1 and the lowest point b of the condensation anti-backflow pipeline 1 can be adaptively increased.

[0074] Meanwhile, compared with the first embodiment, the compressor 3 and the condenser 2 in this embodiment occupy less space in the chiller, and the space utilization rate is high.

[0075] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0076] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0077] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0078] In the description of the present application, “plurality” means two or more.

[0079] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0080] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0081] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0082] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A condensation backflow prevention pipeline, characterized in that: One end of the condensation backflow prevention pipeline (1) is used to communicate with the air inlet of the condenser (2), and the other end of the condensation backflow prevention pipeline (1) is used to communicate with the exhaust port of the compressor (3); The condensation backflow prevention pipeline (1) has an inverted U-shaped curved pipe section, and both sides of the highest point (a) of the curved pipe section extend downward respectively so as to be able to be connected to the air inlet of the condenser (2) and the exhaust port of the compressor (3).

2. The condensation backflow prevention pipeline according to claim 1, characterized in that: include: The lowest point (b) of the condensation backflow prevention pipeline (1) is located on the pipeline between the highest point (a) and the air inlet of the condenser (2), and the condensation backflow prevention pipeline (1) extends upward from the lowest point (b) to be connected to the air inlet of the condenser (2).

3. The condensation backflow prevention pipeline according to claim 2 is characterized in that: include: A backflow prevention portion (10) and a first connecting portion (20) connected to the backflow prevention portion (10); The backflow prevention portion (10) is bent and extended from the highest point (a) in the direction of the lowest point (b); the first connection portion (20) is bent and extended from the highest point (a) in the direction of the exhaust port of the compressor (3), and the first connection portion (20) is used to communicate with the exhaust port of the compressor (3).

4. The condensation backflow prevention pipeline according to claim 3 is characterized in that: The first connecting portion (20) comprises: a first curved pipe section (21); the backflow prevention portion (10) comprises: a second curved pipe section (11); The first curved pipe section (21) is connected to the second curved pipe section (11), and both the first curved pipe section (21) and the second curved pipe section (11) are in contact with the outer wall surface of the condenser (2).

5. The condensation backflow prevention pipeline according to claim 3 is characterized in that: The first connecting portion (20) further comprises a first extending section (22) communicating with the first curved pipe section (21); the backflow prevention portion (10) further comprises a first connecting pipe section (12) communicating with the second curved pipe section (11); Wherein, the first connecting pipe section (12) and the first extension section (22) are both separated from the outer wall surface of the condenser (2), and the first extension section (22) is used to communicate with the exhaust port of the compressor (3); and / or the distance between the first curved pipe section (21) and the second curved pipe section (11) is smaller than the distance between the first connecting pipe section (12) and the first extension section (22).

6. The condensation backflow prevention pipeline according to claim 3, characterized in that: Also includes: a second connecting portion (30) connected to the backflow prevention portion (10); The second connection portion (30) is bent and extended from the lowest point (b) toward the air inlet of the condenser (2), and the second connection portion (30) is used to communicate with the air inlet of the condenser (2).

7. The condensation backflow prevention pipeline according to claim 6, characterized in that: The second connecting portion (30) comprises: a second connecting section (31) and a third connecting section (32) which are interconnected; The second connecting section (31) is in communication with the backflow prevention portion (10), and the second connecting section (31) is extended in a first direction; the third connecting section (32) is used to communicate with the air inlet of the condenser (2).

8. The condensation backflow prevention pipeline according to claim 7, characterized in that: Also includes: Fixings; The fixing member is sleeved on the second connecting portion (30) and the outer shell of the compressor (3) along the first direction, so that the position of the second connecting portion (30) is fixed.

9. A condensation backflow prevention system, characterized in that: It comprises the condensation backflow prevention pipeline (1), the condenser (2) and the compressor (3) according to any one of claims 1 to 8; The condenser (2) comprises a first condensation portion (201) and a second condensation portion (202) which are connected to each other, wherein the first condensation portion (201) is parallel to the first direction and forms an angle with the second condensation portion (202); The first condensation section (201) has an air inlet connected to the condensation backflow prevention pipeline (1); or the second condensation section (202) has an air inlet connected to the condensation backflow prevention pipeline (1).

10. The condensation backflow prevention system according to claim 9, characterized in that: The condensation backflow prevention pipeline (1) is close to the outer wall surface of the condenser (2) from the pipelines on both sides of the highest point (a).

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