CN111750572A

CN111750572A - Condenser and air conditioning equipment

Info

Publication number: CN111750572A
Application number: CN202010768193.0A
Authority: CN
Inventors: 张治平; 张亚俊; 胡东兵; 胡海利
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2020-10-09

Abstract

The present disclosure relates to a condenser and air conditioning equipment, wherein, the condenser includes: a housing provided with a gaseous refrigerant inlet, a cooling medium outlet, a cooling medium inlet, and a liquid refrigerant outlet; the first heat exchange tube is arranged in the shell, and an inlet and an outlet of the first heat exchange tube are respectively communicated with the cooling medium inlet and the cooling medium outlet; the sleeve is arranged in the shell and sleeved outside the first heat exchange pipe; wherein, a spiral heat exchange channel is formed between the inner wall of the sleeve and the outer wall of the first heat exchange tube, and the inlet and the outlet of the heat exchange channel are respectively communicated with the gaseous refrigerant inlet and the liquid refrigerant outlet. The refrigerant carries out abundant heat transfer with the coolant in the first heat exchange tube in spiral helicine heat transfer passageway, and spiral helicine heat transfer passageway increases the disturbance degree of refrigerant, and the heat transfer effect reinforcing has improved heat exchange efficiency, has effectively avoided the emergence of series flow phenomenon moreover.

Description

Condenser and air conditioning equipment

Technical Field

The disclosure relates to the technical field of air conditioning equipment, in particular to a condenser and air conditioning equipment.

Background

The evaporator and the condenser are important components in a commercial air conditioning unit, and for improving the energy efficiency of the unit, the heat exchange capacity of a heat exchanger is improved by a common method.

One of the common methods for increasing the heat exchange capacity of the condenser is to increase the supercooling degree appropriately. In a conventional condenser, a gaseous refrigerant is condensed in a condensing region at an upper portion of the condenser through an inlet port, and the condensed refrigerant reaches a supercooling region located in a bottom space of a casing. The purpose of supercooling is thus realized through baffling to the regional scheme of common subcooling, and such structure is because the existence of baffling board, and the baffling board interval sets up probably unreasonablely, leads to the root of every baffling board to form the dead area that flows easily, reduces the utilization efficiency of heat exchange tube, reduces heat transfer ability. Meanwhile, under the structural form, if the supercooling degree is further improved, the number of the heat exchange tubes and the number of the baffle plates are increased, so that the risk of forming a flow dead zone is increased, and materials and the inner space of the shell are wasted. In addition, due to the factors such as machining and assembling errors of the baffle plate and the shell, gaps exist between the heat exchange tube and the baffle plate and between the baffle plate and the shell, and the refrigerant is caused to flow in series.

Disclosure of Invention

The inventor researches and finds that the heat exchange efficiency in the related technology is not high.

In view of this, the embodiment of the present disclosure provides a condenser and an air conditioning apparatus, which can improve heat exchange efficiency.

Some embodiments of the present disclosure provide a condenser, comprising:

a housing provided with a gaseous refrigerant inlet, a cooling medium outlet, a cooling medium inlet, and a liquid refrigerant outlet;

the first heat exchange tube is arranged in the shell, and an inlet and an outlet of the first heat exchange tube are respectively communicated with the cooling medium inlet and the cooling medium outlet; and

the sleeve is arranged in the shell and sleeved outside the first heat exchange pipe;

wherein, a spiral heat exchange channel is formed between the inner wall of the sleeve and the outer wall of the first heat exchange tube, and the inlet and the outlet of the heat exchange channel are respectively communicated with the gaseous refrigerant inlet and the liquid refrigerant outlet.

In some embodiments, the first heat exchange tube and the sleeve are both located at the bottom of the shell.

In some embodiments, the inner wall of the sleeve is provided with helical grooves or protrusions for forming heat exchange channels.

In some embodiments, the helical groove has a triangular, rectangular, or circular cross-section.

In some embodiments, the pitch of the helical groove is 1mm to 10 mm.

In some embodiments, the difference between the inner diameter of the sleeve and the outer diameter of the first heat exchange tube is 0.5mm to 2.5 mm.

In some embodiments, the sleeve has a wall thickness equal to a wall thickness of the first heat exchange tube.

In some embodiments, the heat exchanger further comprises two tube plates and a plurality of second heat exchange tubes arranged in the shell, wherein the first heat exchange tubes and the second heat exchange tubes are both arranged on the tube plates, and the second heat exchange tubes are positioned above the first heat exchange tubes.

In some embodiments, the first heat exchange tube is multiple and arranged in a plurality of rows in a staggered manner.

In some embodiments, the heat exchange channels are distributed on two sides of the liquid refrigerant outlet.

In some embodiments, a support tube and a support plate disposed within the housing are also included, the support plate being disposed within the support tube for supporting the sleeve.

Some embodiments of the present disclosure provide an air conditioning apparatus including the aforementioned condenser.

Therefore, according to the embodiment of the present disclosure, the casing pipe outside the first heat exchange pipe is sleeved with the first heat exchange pipe in the casing, the spiral heat exchange channel is formed between the inner wall of the casing pipe and the outer wall of the first heat exchange pipe, the refrigerant performs sufficient heat exchange with the cooling medium in the first heat exchange pipe in the spiral heat exchange channel, the disturbance degree of the refrigerant is increased by the spiral heat exchange channel, the heat exchange effect is enhanced, the heat exchange efficiency is improved, and the occurrence of the streaming phenomenon is effectively avoided.

Drawings

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

The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:

FIG. 1 is a front view schematic diagram of some embodiments of condensers of the present disclosure;

FIG. 2 is a side view schematic of some embodiments of condensers of the present disclosure;

FIG. 3 is a schematic diagram of the construction of a first heat exchange tube and a sleeve in some embodiments of the condenser of the present disclosure;

FIG. 4 is a partial schematic view of a condenser according to some embodiments of the present disclosure at a liquid refrigerant outlet;

FIG. 5 is a side view schematic of a support plate in some embodiments of condensers of the present disclosure.

Description of the reference numerals

1. A housing; 2. a tube sheet; 3. a gaseous refrigerant inlet; 4. a cooling medium outlet; 5. a cooling medium inlet; 6. a liquid refrigerant outlet; 7. a first heat exchange tube; 8. a sleeve; 9. supporting a tube; 10. a support plate; 11. a second heat exchange tube; 12. a heat exchange channel.

Detailed Description

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 disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, the particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, devices, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

As shown in fig. 1 to 5, some embodiments of the present disclosure provide a condenser, including: the heat exchanger comprises a shell 1, a first heat exchange tube 7 and a sleeve 8, wherein as shown in fig. 1, the shell 1 is provided with a gaseous refrigerant inlet 3, a cooling medium outlet 4, a cooling medium inlet 5 and a liquid refrigerant outlet 6; the first heat exchange tube 7 is arranged in the shell 1, and the inlet and the outlet of the first heat exchange tube are respectively communicated with the cooling medium inlet 5 and the cooling medium outlet 4; the sleeve 8 is arranged in the shell 1 and sleeved outside the first heat exchange tube 7, a spiral heat exchange channel 12 is formed between the inner wall of the sleeve 8 and the outer wall of the first heat exchange tube 7, and the inlet and the outlet of the heat exchange channel 12 are respectively communicated with the gaseous refrigerant inlet 3 and the liquid refrigerant outlet 6.

In this illustrative embodiment, through set up first heat exchange tube 7 and the sleeve pipe 8 of cover outside first heat exchange tube 7 in casing 1, be formed with spiral helicine heat transfer passageway 12 between the inner wall of sleeve pipe 8 and the outer wall of first heat exchange tube 7, the coolant fully exchanges heat in spiral helicine heat transfer passageway 12 and the coolant in first heat exchange tube 7, spiral helicine heat transfer passageway 12 increases the disturbance degree of coolant, the heat transfer effect reinforcing, the heat exchange efficiency is improved, need not to set up the baffling board, thereby the flow dead zone and heat exchange tube and the baffling board of baffling board root, the gap between baffling board and the casing has been eliminated, the emergence of series flow phenomenon has effectively been avoided.

In some embodiments, as shown in FIG. 1, the first heat exchange tube 7 and the sleeve 8 are both located at the bottom of the housing 1. The cooling medium outlet 4 is positioned above the same side of the cooling medium inlet 5, and the first heat exchange tube 7 and the sleeve 8 are positioned in a supercooling zone at the bottom of the condenser, so that the heat exchange efficiency is effectively improved. In some embodiments, the condenser further includes two tube plates 2 and a plurality of second heat exchange tubes 11 disposed in the housing 1, the first heat exchange tube 7 and the second heat exchange tube 11 are both disposed on the tube plates 2, the second heat exchange tube 11 is disposed above the first heat exchange tube 7, the second heat exchange tube 11 is disposed in a condensation area on the condenser, a gaseous refrigerant entering from the gaseous refrigerant inlet 3 is condensed by the upper half portion of the condenser and then becomes a liquid refrigerant, and the liquid refrigerant enters the heat exchange channel 12 to perform sufficient heat exchange, so as to achieve the purpose of supercooling, and the liquid refrigerant after supercooling flows out from the heat exchange channel 12 to the liquid refrigerant outlet 6, so as to form a reasonable and effective heat exchange gradient, effectively improve the utilization rate of the cooling medium, and have high applicability.

As for how to form the spiral heat exchange channel, in some embodiments, as shown in fig. 3, the inner wall of the sleeve 8 is provided with a spiral groove or a protrusion for forming the heat exchange channel 12, so that heat exchange is improved on the premise of not changing the structure of the first heat exchange tube 7, and the sleeve 8 has higher compatibility with the structural form of the inner tube and higher feasibility. In some embodiments, the spiral grooves have a triangular, rectangular or circular cross-section to facilitate heat exchange. The pitch of the spiral groove is properly adjusted according to the length and number of the first heat exchange tubes 7, and in some embodiments, the pitch of the spiral groove is 1mm to 10 mm.

In some embodiments, as shown in FIG. 3, the difference between the inner diameter D1 of the sleeve 8 and the outer diameter of the first heat exchange tube 7 is 0.5mm to 2.5 mm. Practice proves that the heat exchange efficiency is high, and similarly, in some embodiments, the wall thickness of the sleeve 8 is equal to that of the first heat exchange tube 7, so that the heat exchange efficiency can be improved.

In order to improve the heat exchange efficiency and the utilization rate of the cooling medium, in some embodiments, the heat exchange channels 12 are distributed on two sides of the liquid refrigerant outlet 6. In some embodiments, as shown in fig. 2 and 5, the first heat exchange tubes 7 are multiple and arranged in multiple rows in a staggered manner, and the layout is reasonable. Similarly, as shown in fig. 2, the second heat exchange tubes 11 are multiple and arranged in a staggered manner in multiple rows.

In order to prevent the refrigerant from directly entering the liquid refrigerant outlet 6 without passing through the heat exchange channel, in some embodiments, as shown in fig. 1 and 4, the condenser further includes a support tube 9 and a support plate 10 disposed in the housing 1, the support plate 10 is disposed in the support tube 9 for supporting the sleeve 8, and the support plate 10 effectively prevents the refrigerant from directly entering the liquid refrigerant outlet 6 without passing through the heat exchange channel while supporting the sleeve 8, thereby improving the heat exchange stability.

The distance between the sleeves 8 should be set according to the outer diameter D2 of the sleeves 8. In some embodiments, the aperture diameter D3 ═ D2+1mm for the support plate 10; in some embodiments, the hole-bridge spacing d is 2mm to 4mm, which determines the hole pitch L, while ensuring structural stability.

Some embodiments of the present disclosure provide an air conditioning apparatus including the aforementioned condenser. The air conditioning equipment of the present disclosure has the above-mentioned beneficial technical effects accordingly.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof 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, comprising:

a housing (1) provided with a gaseous refrigerant inlet (3), a cooling medium outlet (4), a cooling medium inlet (5), and a liquid refrigerant outlet (6);

the first heat exchange tube (7) is arranged in the shell (1), and the inlet and the outlet of the first heat exchange tube are respectively communicated with the cooling medium inlet (5) and the cooling medium outlet (4); and

the sleeve (8) is arranged in the shell (1) and sleeved outside the first heat exchange tube (7);

a spiral heat exchange channel (12) is formed between the inner wall of the sleeve (8) and the outer wall of the first heat exchange tube (7), and an inlet and an outlet of the heat exchange channel (12) are respectively communicated with the gaseous refrigerant inlet (3) and the liquid refrigerant outlet (6).

2. The condenser according to claim 1, wherein the first heat exchange tube (7) and the sleeve (8) are both located at the bottom of the shell (1).

3. Condenser according to claim 1, characterised in that the inner wall of the sleeve (8) is provided with helical grooves or protrusions for forming the heat exchange channels (12).

4. A condenser according to claim 3, wherein the spiral groove has a triangular, rectangular or circular cross-section.

5. The condenser of claim 3, wherein the pitch of the spiral groove is 1mm to 10 mm.

6. The condenser according to claim 1, wherein the difference between the inner diameter of the sleeve (8) and the outer diameter of the first heat exchange tube (7) is 0.5mm to 2.5 mm.

7. A condenser according to claim 1, characterised in that the wall thickness of the sleeve (8) is equal to the wall thickness of the first heat exchange tube (7).

8. The condenser according to claim 2, further comprising two tube sheets (2) and a plurality of second heat exchange tubes (11) disposed within the shell (1), the first heat exchange tubes (7) and the second heat exchange tubes (11) being disposed on the tube sheets (2), the second heat exchange tubes (11) being located above the first heat exchange tubes (7).

9. The condenser according to claim 1, wherein the first heat exchange tubes (7) are plural and arranged in a staggered manner in a plurality of rows.

10. Condenser according to claim 1, characterised in that the heat exchange channels (12) are distributed on both sides of the liquid refrigerant outlet (6).

11. The condenser according to claim 1, further comprising a support tube (9) and a support plate (10) disposed within the housing (1), the support plate (10) being disposed within the support tube (9) for supporting the bushing (8).

12. An air conditioning apparatus comprising the condenser according to any one of claims 1 to 11.