Condensers and air conditioning equipment

Abstract

The present disclosure provides a condenser and air-conditioning equipment. The condenser includes: a shell, the top and bottom of which are respectively provided with an air inlet and a liquid outlet; an air-distributing cavity and a condensing cavity are formed in layers from top to bottom in the shell; the air-distributing cavity is in communication with the air inlet and is used to guide the gaseous refrigerant so that it enters the condensing cavity evenly; a heat exchange tube is provided in the condensing cavity for condensing and exchanging heat with the gaseous refrigerant. The condenser of the present disclosure forms an air-distributing cavity and a condensing cavity in layers from top to bottom in the shell; the air-distributing cavity can guide the gaseous refrigerant so that it enters the condensing cavity evenly, and the heat exchange area of ​​the heat exchange tube is fully utilized, thereby eliminating heat exchange dead zones and improving heat exchange efficiency.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air-conditioning equipment, and in particular to a condenser and an air-conditioning equipment. Background Art

[0002] In the field of commercial air conditioning heat exchange technology, conventional fixed tube plate condensers are widely used due to their simple and compact structure and good heat exchange effect. For condensers with this structure, high-temperature gaseous refrigerant enters the shell cavity from the air inlet at the top. A bumper plate is provided at the air inlet, and a certain number of heat exchange tubes are arranged in the shell cavity. The gaseous refrigerant flows outside the heat exchange tube and exchanges heat with the cooling water in the heat exchange tube through the heat exchange tube. The gaseous refrigerant releases heat and changes from a high-temperature gas to a low-temperature saturated liquid. The low-temperature saturated liquid refrigerant flows out from the bottom liquid outlet of the condenser. However, this conventional fixed tube plate condenser has the following technical problems:

[0003] 1. Because the shell has a certain length, it is difficult for the gaseous refrigerant entering the shell cavity from the air inlet to be evenly and quickly distributed to the outside of the heat exchange tubes in all directions of its length. There are even dead zones in some areas. The heat exchange area of ​​the heat exchange tubes is not fully utilized, resulting in poor heat exchange effect.

[0004] 2. After heat exchange, the high-temperature gaseous refrigerant changes to a low-temperature, saturated liquid refrigerant. Under the impact of airflow and gravity, it quickly falls to the bottom of the shell and flows out through the liquid outlet. The liquid refrigerant stays on the surface of the heat exchange tube for a short time. The saturated liquid refrigerant has difficulty continuing to exchange heat with the cooling water, and becomes a lower temperature, subcooled liquid refrigerant. The refrigerant subcooling degree is low, and the unit energy efficiency is not significantly improved. Summary of the Invention

[0005] The inventors have discovered through research that the related technology has the problem of low heat exchange efficiency.

[0006] In view of this, embodiments of the present disclosure provide a condenser and an air-conditioning device that can improve heat exchange efficiency.

[0007] Some embodiments of the present disclosure provide a condenser, comprising: a shell, wherein an air inlet and a liquid outlet are respectively provided at the top and bottom thereof, and an air uniformity cavity and a condensation cavity are layered from top to bottom in the shell, wherein the air uniformity cavity is communicated with the air inlet and is used to guide the gaseous refrigerant so that it enters the condensation cavity evenly; a heat exchange tube is provided in the condensation cavity for condensing and exchanging heat with the gaseous refrigerant.

[0008] In some embodiments, an air equalizing plate is further included in the shell, which is used to form an air equalizing cavity with the shell. The air equalizing plate is provided with a plurality of air equalizing holes for connecting the air equalizing cavity and the condensation cavity.

[0009] In some embodiments, the air distribution plate includes a straight edge segment and an arc segment. The two straight edge segments are respectively located on both sides of the arc segment and connected to the shell. The arc segment and the shell form an arc-shaped air distribution cavity.

[0010] In some embodiments, the air equalizing plate further includes a non-porous section, the non-porous section is located directly below the air inlet, the arc-shaped sections are located on both sides of the non-porous section, and the air equalizing holes are provided in the straight edge section and the arc-shaped section.

[0011] In some embodiments, it also includes a tube box partition plate arranged in the shell, the tube box partition plate is located in the middle of the non-porous section, and the heat exchange tubes are located on both sides of the tube box partition plate.

[0012] In some embodiments, a buffer chamber is layered and formed in the shell, which is located below the condensing chamber and is used to buffer the buffered refrigerant. A return air pipeline is provided between the buffer chamber and the air equalizing chamber. A one-way valve is provided on the return air pipeline. The air inlet and air outlet of the one-way valve are respectively connected to the buffer chamber and the air equalizing chamber.

[0013] In some embodiments, it also includes a baffle plate and a liquid equalizing plate arranged in the shell. The baffle plate is used to form a condensation chamber. The liquid equalizing plate is located below the baffle plate. The baffle plate, the liquid equalizing plate and the shell together form a buffer chamber. The baffle plate is provided with a first liquid equalizing hole for connecting the condensation chamber and the buffer chamber. The liquid equalizing plate is provided with a second liquid equalizing hole for liquid refrigerant to flow out.

[0014] In some embodiments, the pore size of the second liquid balancing hole is smaller than the pore size of the first liquid balancing hole.

[0015] In some embodiments, the second liquid balancing hole and the first liquid balancing hole are staggered in the flow direction of the liquid refrigerant.

[0016] In some embodiments, a subcooling cavity is layered and formed in the shell below the buffer cavity. A heat exchange tube is provided in the subcooling cavity for subcooling the liquid refrigerant. The liquid equalizing plate and the shell form a subcooling cavity, and the subcooling cavity is connected to the liquid outlet.

[0017] In some embodiments, the second liquid equalizing hole is arranged to face the heat exchange tube below.

[0018] Some embodiments of the present disclosure provide an air conditioning device including the aforementioned condenser.

[0019] Therefore, based on the above technical solution, the condenser disclosed in the present invention forms an even air cavity and a condensation cavity by layering from top to bottom in the shell. The even air cavity can guide the gaseous refrigerant so that the gaseous refrigerant enters the condensation cavity evenly, and the heat exchange area of ​​the heat exchange tube is fully utilized, eliminating the heat exchange dead zone and improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0022] Figure 1 is a schematic structural diagram of some embodiments of the condenser according to the present disclosure;

[0023] Figure 2 yes Figure 1 Cross-sectional view at the EE position;

[0024] Figure 3 is a schematic structural diagram of an air-distributing plate according to some embodiments of the condenser disclosed herein;

[0025] Figure 4 is a schematic structural diagram of an anti-collision plate in some embodiments of the condenser according to the present disclosure;

[0026] Figure 5 1 is a schematic diagram of the structure of the liquid balancing plate in some embodiments of the condenser according to the present disclosure.

[0027] Description of Reference Numerals

[0028] 1. Air inlet; 2. Air equalizing plate; 3. Heat exchange tube; 4. Shell; 5. Anti-collision plate; 6. Liquid equalizing plate; 7. Liquid outlet; 8. Return air line; 9. One-way valve; 10. Pipe box partition plate; 11. Pipe box; 12. Tube sheet; 21. Straight-edge section; 22. Arc section; 23. Non-hole section; 24. Air equalizing hole; 51. First liquid equalizing hole; 61. Second liquid equalizing hole. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure, its application, or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0030] The terms "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The terms "include" or "comprises" and similar terms mean that the elements before the term include the elements listed after the term, and do not exclude the possibility of also including other elements. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] In the present disclosure, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be not directly connected to the other device but with an intervening device.

[0032] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0033] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0034] like Figure 1 and Figure 2 As shown, some embodiments of the present disclosure provide a condenser, which includes: a shell 4, a tube box 11 and a tube sheet 12. The condenser structure is a fixed tube sheet type. The shell 4 is fixed between the two tube sheets 12. The top and bottom of the shell 4 are respectively provided with an air inlet 1 and a liquid outlet 7. An air uniformity cavity A and a condensation cavity B are formed in layers from top to bottom in the shell 4. The air uniformity cavity A is communicated with the air inlet 1 and is used to guide the gaseous refrigerant so that it enters the condensation cavity B evenly. A heat exchange tube 3 is provided in the condensation cavity B for condensing and exchanging heat with the gaseous refrigerant.

[0035] In this schematic embodiment, the uniform air cavity A and the condensation cavity B are formed by layering from top to bottom in the shell 4. The uniform air cavity A can guide the gaseous refrigerant so that the gaseous refrigerant entering from the air inlet 1 can enter the condensation cavity B evenly, and the heat exchange area of ​​the heat exchange tube 3 is fully utilized, thereby effectively improving the heat exchange efficiency of the condenser.

[0036] How to form the uniform air cavity A, such as Figure 1 and Figure 2As shown, in some embodiments, the condenser further includes an air distribution plate 2 disposed within the housing 4, configured to form an air distribution cavity A with the housing 4. The air distribution plate 2 is provided with a plurality of air distribution holes 24 for connecting the air distribution cavity A with the condensing cavity B. The air distribution plate 2 functions to distribute the air evenly along the length of the housing 4 to the surface of the heat exchange tubes 3 in the condensing cavity B. This fully utilizes the heat exchange area of ​​the heat exchange tubes 3, eliminates dead zones to the greatest extent, and achieves a good heat exchange effect.

[0037] like Figure 3 As shown, in some embodiments, the air distribution plate 2 includes a straight edge section 21 and an arc section 22. The two straight edge sections 21 are located on both sides of the arc section 22 and connected to the shell 4. The arc section 22 and the shell 4 form an arc-shaped air distribution cavity A. Figure 1 and Figure 3 As shown, the length of the gas distribution plate 2 is equal to the distance between the two tube sheets 12. The gas distribution holes 24 are provided in the straight section 21 and the arc section 22. This arrangement can maximize the area of ​​the gas distribution plate 2, allowing the gaseous refrigerant to enter the condensing chamber B as evenly and dispersed as possible, thereby further improving the heat exchange efficiency.

[0038] In order to effectively improve the heat exchange effect, combined Figure 2 and Figure 3 As shown, in some embodiments, the air equalizing plate 2 also includes a non-porous section 23, the non-porous section 23 is located directly below the air inlet 1, the arc section 22 is located on both sides of the non-porous section 23, and the air equalizing holes 24 are provided on the straight edge section 21 and the arc section 22. The purpose of not processing the air equalizing holes 24 on the non-porous section 23 is to allow the gaseous refrigerant to flow to the arc section 22 and the straight edge section 21 on both sides of the non-porous section 23, so that the gaseous refrigerant is more evenly dispersed, and then enters the condensation chamber B from each air equalizing hole 24.

[0039] When the pipe pass is multi-pass, it is necessary to arrange a pipe box partition plate in the pipe box 11. In some embodiments, such as Figure 2 As shown, the condenser also includes a tube-box partition 10 disposed within the shell 4. However, the tube-box partition 10 occupies the tube layout area of ​​the tube sheet 12, leaving a certain area without heat exchange tubes in the condensing chamber B. The tube-box partition 10 is disposed in the middle of the non-perforated section 23, with the heat exchange tubes 3 located on both sides of the tube-box partition 10. This ensures that the gaseous refrigerant is evenly distributed outside the heat exchange tubes 3 in the condensing chamber B. The high-temperature gaseous refrigerant entering the uniform gas chamber A is rapidly distributed in the uniform gas chamber A along the length of the shell and flows into the condensing chamber B through the uniform gas holes 24 on the uniform gas plate 2.

[0040] like Figure 2As shown, in some embodiments, a buffer chamber C is layered and formed in the shell 4 below the condensing chamber B to buffer the gaseous refrigerant. A return air line 8 is provided between the buffer chamber C and the gas equalizing chamber A. A one-way valve 9 is provided on the return air line 8. The air inlet and the air outlet of the one-way valve 9 are respectively connected to the buffer chamber C and the gas equalizing chamber A. The one-way valve 9 on the return air line 8 only allows the gaseous refrigerant to flow out of the buffer chamber C. The high-temperature gaseous refrigerant exchanges heat with the cooling water in the heat exchange tube 3 in the condensing chamber B and becomes a saturated liquid refrigerant. The saturated liquid refrigerant and a small amount of uncondensed gaseous refrigerant flow into the buffer chamber C. The buffer chamber C can achieve gas-liquid separation, so that the uncondensed gaseous refrigerant returns to the gas equalizing chamber A through the return air line 8 and the one-way valve 9, and then returns to the condensing chamber B for heat exchange after equalization until it becomes a saturated liquid refrigerant.

[0041] In some embodiments, a baffle plate 5 and a liquid equalizing plate 6 are further included in the shell 4. The baffle plate 5 is used to form a condensation chamber B. The liquid equalizing plate 6 is located below the baffle plate 5. The baffle plate 5, the liquid equalizing plate 6 and the shell 4 together form a buffer chamber C. The baffle plate 5 is provided with a first liquid equalizing hole 51 for connecting the condensation chamber B and the buffer chamber C. The liquid equalizing plate 6 is provided with a second liquid equalizing hole 61 for the liquid refrigerant to flow out. Saturated liquid refrigerant and a small amount of uncondensed gaseous refrigerant flow from the first liquid equalizing hole 51 on the baffle plate 5 into the buffer chamber C. The saturated liquid refrigerant gathers on the liquid equalizing plate 6 to form a liquid level of a certain height. Due to the liquid sealing effect of the liquid level, the uncondensed gaseous refrigerant flowing down from the baffle plate 5 flows back into the gas equalizing chamber A from the return air pipe 8.

[0042] In order to improve the buffering performance of the buffer cavity C, in some embodiments, as Figure 4 and Figure 5 As shown, the second liquid balancing hole 61 has a smaller aperture than the first liquid balancing hole 51. In some alternative embodiments, the second liquid balancing hole 61 and the first liquid balancing hole 51 are staggered in the flow direction of the liquid refrigerant.

[0043] like Figure 1 and Figure 2 As shown, in some embodiments, a subcooling cavity D located below the buffer cavity C is further formed in layers within the shell 4. A heat exchange tube 3 is provided within the subcooling cavity D for subcooling the liquid refrigerant for heat exchange. The liquid equalizing plate 6 and the shell 4 form a subcooling cavity D, and the subcooling cavity D is connected to the liquid outlet 7. The liquid refrigerant having a certain liquid level formed on the liquid equalizing plate 6 drips evenly from the second liquid equalizing hole 61 on the liquid equalizing plate 6 onto the surface of the heat exchange tube 3. The saturated liquid refrigerant continues to exchange heat with the cooling water in the heat exchange tube 3 in the subcooling cavity D and becomes a subcooled liquid refrigerant. By controlling the number of heat exchange tubes in the subcooling cavity D, the subcooling degree of the liquid refrigerant flowing out of the liquid outlet 7 is achieved, and the energy efficiency of the unit is significantly improved.

[0044] The setting of the buffer chamber C can form an isolation between the condensation chamber B and the supercooling chamber D, keeping the functions of each chamber unaffected, reducing the influence of the liquid refrigerant on the condensation chamber B, and maximizing the condensation effect of the gaseous refrigerant. The supercooling chamber D is not affected by the gaseous refrigerant, and independently realizes the liquid refrigerant to continue heat exchange and achieve supercooling; in addition, the buffer chamber C can achieve the effect of liquid equalization, and re-equalize the liquid to adapt to the difference in the condensation amount on the condensation chamber B in the length direction of the shell, so that the liquid refrigerant flowing into the supercooling chamber D drips evenly onto the heat exchange tube 3.

[0045] To improve heat exchange efficiency, in some embodiments, the liquid balancing plate 6 is a rectangular structure with a predetermined number of second liquid balancing holes 61 arranged in an array. These second liquid balancing holes 61 are positioned directly opposite the heat exchange tubes 3 below. These second liquid balancing holes 61 are positioned directly opposite the heat exchange tubes 3 in the subcooling cavity D, allowing liquid refrigerant flowing into the subcooling cavity D to drip directly onto the heat exchange tubes 3, thereby improving heat exchange efficiency.

[0046] Some embodiments of the present disclosure provide an air conditioning device including the aforementioned condenser. The air conditioning device accordingly also has the aforementioned beneficial technical effects.

[0047] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0048] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A condenser, characterized in that: include: A shell (4) is provided with an air inlet (1) and a liquid outlet (7) at its top and bottom, respectively, wherein an air-distributing cavity (A) and a condensing cavity (B) are formed in layers from top to bottom in the shell (4), the air-distributing cavity (A) is in communication with the air inlet (1) and is used to guide the gaseous refrigerant so that it enters the condensing cavity (B) uniformly; a heat exchange tube (3) is provided in the condensing cavity (B) and is used to condense and exchange heat with the gaseous refrigerant; a buffer cavity (C) is also formed in layers below the condensing cavity (B) in the shell (4) and is used to buffer the gaseous refrigerant and achieve gas-liquid separation; a return air pipeline (8) is provided between the buffer cavity (C) and the air-distributing cavity (A), a one-way valve (9) is provided on the return air pipeline (8), and the air inlet and the air outlet of the one-way valve (9) are respectively in communication with the buffer cavity (C) and the air-distributing cavity (A); the condenser further comprises a bumper plate (5) provided in the shell (4) and a liquid balancing plate (6), the anti-collision plate (5) is used to form the condensation chamber (B), the liquid balancing plate (6) is located below the anti-collision plate (5), the anti-collision plate (5), the liquid balancing plate (6) and the shell (4) together form the buffer chamber (C), the anti-collision plate (5) is provided with a first liquid balancing hole (51) for connecting the condensation chamber (B) and the buffer chamber (C), the liquid balancing plate (6) is provided with a second liquid balancing hole (61) for liquid refrigerant to flow out, the second liquid balancing hole (61) and the first liquid balancing hole (51) are staggered in the flow direction of the liquid refrigerant; a subcooling chamber (D) located below the buffer chamber (C) is also formed in layers in the shell (4), a heat exchange tube (3) is provided in the subcooling chamber (D) for subcooling heat exchange of the liquid refrigerant, the liquid balancing plate (6) and the shell (4) form the subcooling chamber (D), and the subcooling chamber (D) is communicated with the liquid outlet (7).

2. The condenser according to claim 1, characterized in that It also includes an air distribution plate (2) arranged in the shell (4) and used to form the air distribution cavity (A) with the shell (4), and the air distribution plate (2) is provided with a plurality of air distribution holes (24) for connecting the air distribution cavity (A) and the condensation cavity (B).

3. The condenser according to claim 2, characterized in that The air distribution plate (2) comprises a straight edge section (21) and an arc section (22), the two straight edge sections (21) being respectively located on both sides of the arc section (22) and connected to the shell (4), and the arc section (22) and the shell (4) forming the arc-shaped air distribution cavity (A).

4. The condenser according to claim 3, characterized in that The air equalizing plate (2) further comprises a non-porous section (23), the non-porous section (23) being located directly below the air inlet (1), the arc-shaped section (22) being located on both sides of the non-porous section (23), and the air equalizing holes (24) being provided in the straight edge section (21) and the arc-shaped section (22).

5. The condenser according to claim 4, characterized in that It also includes a pipe box partition plate (10) arranged in the shell (4), the pipe box partition plate (10) is located in the middle of the non-porous section (23), and the heat exchange tubes (3) are located on both sides of the pipe box partition plate (10).

6. The condenser according to claim 1, characterized in that The pore size of the second liquid balancing hole (61) is smaller than the pore size of the first liquid balancing hole (51).

7. The condenser according to claim 1, characterized in that The second liquid balancing hole (61) is arranged facing the heat exchange tube (3) below.

8. An air conditioning device, characterized in that: Comprising the condenser according to any one of claims 1 to 7.

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