CN111750572A - Condenser and Air Conditioning Equipment - Google Patents

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

Background technique

Evaporators and condensers are important components of commercial air-conditioning units. To improve the energy efficiency of the units, a common method is to increase the heat exchange capacity of the heat exchanger.

One of the common ways to improve the heat transfer capacity of the condenser is to appropriately increase the degree of subcooling. In a traditional condenser, the gaseous refrigerant passes through the air inlet and condenses in the upper condensing area of the condenser, and the condensed refrigerant reaches the subcooling area located in the bottom space of the shell. The common subcooling area scheme is that the refrigerant passes through the baffles to achieve the purpose of supercooling. Due to the existence of the baffles and the unreasonable spacing of the baffles, such a structure may easily lead to the formation of flow at the root of each baffle. The dead zone reduces the utilization efficiency of the heat exchange tube and reduces the heat exchange capacity. At the same time, under the above structure, if the degree of subcooling is to be further improved, the number of heat exchange tubes and baffles are often increased. This method not only increases the risk of forming a flow dead zone, but also wastes materials and the interior of the shell. space. In addition, due to factors such as errors in the processing and assembly of the baffle and the casing, there are gaps between the heat exchange tube and the baffle, and between the baffle and the casing, resulting in the flow of refrigerant.

SUMMARY OF THE INVENTION

The inventor's research found that there is a problem of low heat exchange efficiency in the related art.

In view of this, embodiments of the present disclosure provide a condenser and an air conditioner, which can improve heat exchange efficiency.

Some embodiments of the present disclosure provide a condenser comprising:

The shell is provided with a gaseous refrigerant inlet, a cooling medium outlet, a cooling medium inlet and a liquid refrigerant outlet;

a first heat exchange tube, disposed in the casing, the inlet and the outlet of which are communicated with the cooling medium inlet and the cooling medium outlet, respectively; and

a sleeve, which is arranged in the casing and sleeved outside the first heat exchange tube;

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 outlet of the heat exchange channel are respectively communicated with the gaseous refrigerant inlet and the liquid refrigerant outlet.

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

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

In some embodiments, the cross-section of the helical groove is triangular, rectangular or circular.

In some embodiments, the pitch of the helical groove is 1 mm 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 0.5 mm˜2.5 mm.

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

In some embodiments, it further includes two tube sheets and a plurality of second heat exchange tubes arranged in the shell, the first heat exchange tubes and the second heat exchange tubes are both arranged on the tube sheets, and the second heat exchange tubes are located in above the first heat exchange tube.

In some embodiments, the first heat exchange tubes are multiple and arranged in multiple rows in a staggered arrangement.

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

In some embodiments, it also includes a support tube and a support plate arranged in the casing, and the support plate is arranged in 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, by arranging the first heat exchange tube in the casing and the sleeve sleeved outside the first heat exchange tube, a spiral shape is formed between the inner wall of the sleeve and the outer wall of the first heat exchange tube In the heat exchange channel, the refrigerant conducts sufficient heat exchange in the spiral heat exchange channel and the cooling medium in the first heat exchange tube. Thermal efficiency, and effectively avoid the occurrence of cross-flow phenomenon.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of the 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 with reference to the accompanying drawings, wherein:

FIG. 1 is a schematic front view of the structure of some embodiments of the condenser of the present disclosure;

2 is a schematic side view of the structure of some embodiments of the condenser of the present disclosure;

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

4 is a partial structural schematic diagram of some embodiments of the condenser of the present disclosure at the position of the liquid refrigerant outlet;

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

Description of reference numerals

1. Shell; 2. Tube sheet; 3. Gaseous refrigerant inlet; 4. Cooling medium outlet; 5. Cooling medium inlet; 6. Liquid refrigerant outlet; 7. First heat exchange tube; 8. Casing; 9. Support tube; 10, support plate; 11, second heat exchange tube; 12, heat exchange channel.

Detailed ways

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 in no way limits the disclosure, its application or uses in any way. The present disclosure may be implemented 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 unless specifically stated otherwise, the relative arrangements of parts and steps, compositions of materials, numerical expressions and numerical values set forth in these embodiments are to be interpreted as illustrative only and not as limiting.

As used in this disclosure, "first," "second," and similar words do not denote any order, quantity, or importance, but are merely used to distinguish the different parts. "Comprising" or "comprising" and similar words mean that the element preceding the word covers the elements listed after the word, and does not exclude the possibility that other elements are also covered. "Up", "Down", "Left", "Right", etc. are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

In the present disclosure, when a specific device is described as being located between the first device and the second device, there may or may not be an intervening device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to other devices without intervening devices, or may not be directly connected to other devices but have intervening devices.

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, general-purpose dictionaries should be construed to have meanings consistent with their meanings in the context of the related art, and not to be construed in an idealized or highly formalized sense, unless explicitly stated herein. Defined like this.

Techniques, apparatus, and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, techniques, apparatus, and equipment should be considered part of the specification.

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

In this exemplary embodiment, by arranging the first heat exchange tube 7 in the casing 1 and the sleeve 8 sleeved outside the first heat exchange tube 7, the inner wall of the sleeve 8 is connected to the first heat exchange tube 7 A spiral heat exchange channel 12 is formed between the outer walls of the heat exchanger, and the refrigerant conducts sufficient heat exchange between the spiral heat exchange channel 12 and the cooling medium in the first heat exchange tube 7. The degree of disturbance is increased, the heat exchange effect is enhanced, the heat exchange efficiency is improved, and there is no need to set baffles, thereby eliminating the flow dead zone at the root of the baffle and the gap between the heat exchange tube and the baffle, the baffle and the shell Gap, effectively avoid the occurrence of streaming phenomenon.

In some embodiments, as shown in FIG. 1 , both the first heat exchange tube 7 and the sleeve 8 are located at the bottom of the casing 1 . The cooling medium outlet 4 is located above the same side of the cooling medium inlet 5, and the first heat exchange tube 7 and the sleeve 8 are located in the subcooling area at the bottom of the condenser, which effectively improves the heat exchange efficiency. In some embodiments, the condenser further includes two tube sheets 2 and a plurality of second heat exchange tubes 11 arranged in the shell 1 , and the first heat exchange tubes 7 and the second heat exchange tubes 11 are both arranged on the tube plates 2, the second heat exchange pipe 11 is located above the first heat exchange pipe 7, the second heat exchange pipe 11 is located in the condensation area on the condenser, and the gaseous refrigerant entering from the gaseous refrigerant inlet 3 is condensed through the upper half of the condenser. It becomes a liquid refrigerant and enters the heat exchange channel 12, and conducts sufficient heat exchange to achieve the purpose of subcooling. The liquid refrigerant after subcooling flows out from the heat exchange channel 12 to the liquid refrigerant outlet 6, forming a reasonable and effective heat exchange gradient. The utilization rate of the cooling medium is improved, and the practicability is high.

Regarding how to form the helical 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, without changing the first heat exchange tube On the premise of its own structure, the heat exchange is improved, so that the casing 8 has a higher tolerance for the structural form of the inner tube, and has a higher practicability. In some embodiments, the cross section of the spiral groove is triangular, rectangular or circular, which is beneficial for heat exchange. The pitch of the helical groove can be appropriately adjusted according to the length and quantity of the first heat exchange tubes 7 , and in some embodiments, the pitch of the helical groove is 1 mm˜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 0.5 mm˜2.5 mm. It has been proved in practice that the heat exchange efficiency is relatively high. Similarly, in some embodiments, the wall thickness of the casing 8 is equal to the wall thickness of the first heat exchange tube 7, which can also improve the heat exchange efficiency.

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 both sides of the liquid refrigerant outlet 6 . In some embodiments, as shown in FIG. 2 and FIG. 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 , there are multiple second heat exchange tubes 11 and are arranged in multiple rows in a staggered manner.

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 FIG. The support plate 10 is arranged in the support tube 9 to support the sleeve 8. 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 determined according to the outer diameter D2 of the sleeves 8 . In some embodiments, the hole diameter of the support plate 10 is D3=D2+1mm; in some embodiments, the heat exchange is ensured on the premise of ensuring structural stability, and the hole-bridge spacing d=2mm～4mm, so as to determine the hole Spacing L.

Some embodiments of the present disclosure provide an air conditioning apparatus including the aforementioned condenser. Accordingly, the air conditioning apparatus of the present disclosure also has the above-mentioned beneficial technical effects.

So far, the various embodiments of the present disclosure have been described in detail. Some details that are well known in the art are not described in order to avoid obscuring the concept of the present disclosure. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

While some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art will appreciate that the above examples are provided for illustration only, and are not intended to limit the scope of the present disclosure. Those skilled in the art should understand that, without departing from the scope and spirit of the present disclosure, the above embodiments can be modified or some technical features can be equivalently replaced. The scope of the present disclosure is defined by the appended claims.

Claims (12)

1. a condenser, is characterized in that, comprises: a housing (1), which is provided with a gaseous refrigerant inlet (3), a cooling medium outlet (4), a cooling medium inlet (5) and a liquid refrigerant outlet (6); a first heat exchange tube (7), arranged in the casing (1), the inlet and outlet of which are communicated with the cooling medium inlet (5) and the cooling medium outlet (4), respectively; and a sleeve (8), arranged in the casing (1) and sleeved outside the first heat exchange tube (7); Wherein, 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 outlet of the heat exchange channel (12) are respectively connected to The gaseous refrigerant inlet (3) communicates with 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 . 3. The condenser according to claim 1, characterized in that, the inner wall of the sleeve (8) is provided with a spiral groove or a protrusion for forming the heat exchange channel (12). 4. The condenser according to claim 3, wherein the cross section of the spiral groove is triangular, rectangular or circular. 5 . The condenser according to claim 3 , wherein the pitch of the spiral groove is 1 mm˜10 mm. 6 . 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 0.5 mm to 2.5 mm. 7 . 7. The condenser according to claim 1, wherein 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, characterized in that, further comprising two tube sheets (2) and a plurality of second heat exchange tubes (11) arranged in the shell (1), the Both the first heat exchange tube (7) and the second heat exchange tube (11) are arranged on the tube sheet (2), and the second heat exchange tube (11) is located on the first heat exchange tube ( 7) above. 9 . The condenser according to claim 1 , characterized in that, the first heat exchange tubes ( 7 ) are multiple and are arranged in multiple rows in a staggered manner. 10 . 10. The condenser according to claim 1, wherein the heat exchange channels (12) are distributed on both sides of the liquid refrigerant outlet (6). 11. The condenser according to claim 1, characterized in that, further comprising a support pipe (9) and a support plate (10) arranged in the casing (1), the support plate (10) being arranged on the Inside the support tube (9), it is used to support the sleeve (8). 12. An air conditioner, characterized by comprising the condenser according to any one of claims 1 to 11.

Images