阅读说明：本技术 用于空调器的换热器及空调器 (Heat exchanger for air conditioner and air conditioner ) 是由 董旭 王飞 于 2019-01-11 设计创作，主要内容包括：本发明涉及用于空调器的换热器及空调器。具体地,换热器包括：多个冷媒热传导部,沿对流换热部的周向方向均布；多个第一翅片组,每个第一翅片组具有多个第一散热翅片,每个第一翅片组的多个第一散热翅片设置于该冷媒热传导部的一侧；多个第二翅片组,每个第二翅片组具有多个第二散热翅片,每个第二翅片组的多个第二散热翅片设置于该冷媒热传导部的另一侧；处于两个相邻冷媒热传导部之间的第一翅片组和第二翅片组中,部分第一散热翅片中每个第一散热翅片沿其宽度方向的延长面穿过两个相邻的第二散热翅片的末端之间的间隙；部分第二散热翅片中每个第二散热翅片沿其宽度方向的延长面穿过两个相邻的第一散热翅片的末端之间的间隙。(The invention relates to a heat exchanger for an air conditioner and the air conditioner. Specifically, the heat exchanger includes: a plurality of refrigerant heat transfer parts uniformly distributed along the circumferential direction of the convection heat transfer part; a plurality of first fin groups, each of which has a plurality of first heat dissipation fins, the plurality of first heat dissipation fins of each of the first fin groups being disposed on one side of the refrigerant heat conduction portion; a plurality of second fin groups, each of which has a plurality of second heat dissipation fins, the plurality of second heat dissipation fins of each of the second fin groups being disposed on the other side of the refrigerant heat conduction portion; in the first fin group and the second fin group between two adjacent refrigerant heat conduction parts, the extension surface of each first radiating fin in part of the first radiating fins along the width direction passes through the gap between the tail ends of two adjacent second radiating fins; the extension surface of each second radiating fin in the width direction of the partial second radiating fins penetrates through the gap between the tail ends of two adjacent first radiating fins.)

1. A heat exchanger for an air conditioner, comprising a convection heat exchanging part, the convection heat exchanging part comprising:

a plurality of refrigerant heat transfer portions, each of the refrigerant heat transfer portions having a first edge and a second edge extending in an axial direction of the convection heat transfer portion; the first edge is arranged on the inner side of the second edge, and the refrigerant heat conduction parts are uniformly distributed along the circumferential direction of the convection heat exchange part; one or more refrigerant channels are arranged in each refrigerant heat conduction part;

a plurality of first fin groups, each of the first fin groups having a plurality of first heat dissipation fins extending in an axial direction of the convective heat transfer portion, and the plurality of first heat dissipation fins of each of the first fin groups being disposed on one side of the refrigerant heat transfer portion in a direction in which the first edge of the refrigerant heat transfer portion points to the second edge; and

a plurality of second fin groups, each of the second fin groups having a plurality of second heat dissipation fins extending along an axial direction of the convective heat transfer portion, and the plurality of second heat dissipation fins of each of the second fin groups being disposed on the other side of the refrigerant heat transfer portion from the first edge of the refrigerant heat transfer portion to the second edge; and is

In the first fin group and the second fin group between two adjacent refrigerant heat conduction parts,

at least part of the extension surface of each first radiating fin in the width direction of the first radiating fin penetrates through the gap between the tail ends of two adjacent second radiating fins, so that the first radiating fin faces the gap between the tail ends of the two adjacent second radiating fins; and

at least part of the extension surface of each second radiating fin in the width direction of the second radiating fin penetrates through the gap between the tail ends of two adjacent first radiating fins, so that the second radiating fin faces the gap between the tail ends of two adjacent first radiating fins.

2. The heat exchanger of claim 1,

the direction from the first edge to the second edge of each refrigerant heat conduction part is a radial direction of the convection heat exchange part.

3. The heat exchanger according to claim 1 or 2,

each of the first heat dissipation fins and each of the second heat dissipation fins extend from the corresponding refrigerant heat conduction portion to the corresponding side of the refrigerant heat conduction portion and to a radially outer side of the convective heat transfer portion.

4. The heat exchanger of claim 3,

the plurality of first radiating fins on one side of each refrigerant heat conduction part and the plurality of second radiating fins on the other side of the refrigerant heat conduction part are symmetrically arranged relative to the refrigerant heat conduction part.

5. The heat exchanger of claim 1,

and a space is reserved between the first fin group and the second fin group between two adjacent refrigerant heat conduction parts.

6. The heat exchanger of claim 1,

each refrigerant channel extends along the axial direction of the convection heat exchange part; and the cross-sectional profile of each refrigerant channel comprises:

a first rectangular frame extending in a direction pointing from the respective first edge to the second edge;

and the second rectangular frames are arranged on two sides of the first rectangular frame and are communicated with the inner space of the first rectangular frame.

7. The heat exchanger of claim 1, further comprising:

the air current gathers together the portion, is both ends opening and follows the tube-shape that the axial direction of convection heat transfer portion extended, convection heat transfer portion set up in the inboard of air current gathers together the portion.

8. The heat exchanger of claim 7,

the airflow gathering part is made of heat conducting materials so as to absorb heat or cold from the inner wall surface of the airflow gathering part and radiate the heat or cold outwards from the outer wall surface of the airflow gathering part.

9. The heat exchanger of claim 8,

the convection heat exchange part is an integrated workpiece and is formed by adopting an extrusion process; or the like, or, alternatively,

the convection heat exchange part and the corresponding air flow gathering part form an integral workpiece, and the integral workpiece is formed by adopting an extrusion process.

10. An air conditioner comprises an evaporator and a condenser, and is characterized in that,

the evaporator and/or the condenser using the heat exchanger as claimed in claims 1 to 9.

Technical Field

The invention relates to the field of refrigeration and heating, in particular to a heat exchanger for an air conditioner and the air conditioner with the heat exchanger.

Background

In recent years, with the improvement of the quality of life of people, more and more attention is paid to the thermal comfort of the indoor environment, and the building energy consumption, especially the cooling and heating energy consumption is also more and more large, so that the cooling and heating device with high efficiency, energy conservation and good thermal comfort is one of the research hotspots in the heating and ventilation industry. The heat exchanger of the existing air conditioner mainly heats or cools air in a forced convection heat exchange mode, and then transfers heat or cold to a room or a human body, however, the inventor finds that the existing finned tube evaporator has large volume and high cost, the convection heat exchange coefficient of the air flowing drawn out by a fan is small, and the production flow is tedious.

Disclosure of Invention

The object of the first aspect of the present invention is to overcome at least one of the drawbacks of the existing heat exchangers for air conditioners, and to provide a heat exchanger that can increase the disturbance of the overflowed air, does not block the passage of the overflowed air, and can enhance the convective heat transfer coefficient.

The second aspect of the invention aims to provide an air conditioner with the heat exchanger.

According to a first aspect of the present invention, there is provided a heat exchanger including a convective heat exchange portion including:

a plurality of refrigerant heat transfer portions, each of the refrigerant heat transfer portions having a first edge and a second edge extending in an axial direction of the convection heat transfer portion; the first edge is arranged on the inner side of the second edge, and the refrigerant heat conduction parts are uniformly distributed along the circumferential direction of the convection heat exchange part; one or more refrigerant channels are arranged in each refrigerant heat conduction part;

a plurality of first fin groups, each of the first fin groups having a plurality of first heat dissipation fins extending in an axial direction of the convective heat transfer portion, and the plurality of first heat dissipation fins of each of the first fin groups being disposed on one side of the refrigerant heat transfer portion in a direction in which the first edge of the refrigerant heat transfer portion points to the second edge; and

a plurality of second fin groups, each of the second fin groups having a plurality of second heat dissipation fins extending along an axial direction of the convective heat transfer portion, and the plurality of second heat dissipation fins of each of the second fin groups being disposed on the other side of the refrigerant heat transfer portion from the first edge of the refrigerant heat transfer portion to the second edge; and is

In the first fin group and the second fin group between two adjacent refrigerant heat conduction parts,

at least part of the extension surface of each first radiating fin in the width direction of the first radiating fin penetrates through the gap between the tail ends of two adjacent second radiating fins, so that the first radiating fin faces the gap between the tail ends of the two adjacent second radiating fins; and

at least part of the extension surface of each second radiating fin in the width direction of the second radiating fin penetrates through the gap between the tail ends of two adjacent first radiating fins, so that the second radiating fin faces the gap between the tail ends of two adjacent first radiating fins.

Optionally, a direction from the first edge to the second edge of each refrigerant heat conduction portion is a radial direction of the convection heat exchange portion.

Optionally, each of the first heat dissipation fins and each of the second heat dissipation fins extend from the corresponding refrigerant heat conduction portion to the corresponding side of the refrigerant heat conduction portion and to a radially outer side of the convective heat transfer portion.

Optionally, the plurality of first heat dissipation fins on one side of each refrigerant heat conduction portion and the plurality of second heat dissipation fins on the other side of the refrigerant heat conduction portion are symmetrically arranged with respect to the refrigerant heat conduction portion.

Alternatively, a space is formed between the first fin group and the second fin group between two adjacent refrigerant heat conduction portions, that is, the first fin group and the second fin group are located on two sides of an angle bisection plane between two adjacent refrigerant heat conduction portions, and may also be symmetrically arranged about the angle bisection plane.

Optionally, each refrigerant channel extends along an axial direction of the convection heat exchanging part; and the cross-sectional profile of each refrigerant channel comprises:

a first rectangular frame extending in a direction pointing from the respective first edge to the second edge;

and the second rectangular frames are arranged on two sides of the first rectangular frame and are communicated with the inner space of the first rectangular frame.

Optionally, the heat exchanger further comprises an airflow gathering part which is in a cylindrical shape with openings at two ends and extends along the axial direction of the convection heat exchange part, and the convection heat exchange part is arranged on the inner side of the airflow gathering part.

Optionally, the airflow gathering part is made of a heat conductive material to absorb heat or cold from an inner wall surface thereof and radiate the heat or cold outward from an outer wall surface thereof.

Optionally, the convection heat transfer part is an integrated workpiece and is formed by adopting an extrusion process; or the like, or, alternatively,

the convection heat exchange part and the corresponding air flow gathering part form an integral workpiece, and the integral workpiece is formed by adopting an extrusion process.

According to a second aspect of the present invention, the present invention further provides an air conditioner, comprising an evaporator and a condenser, wherein the evaporator and/or the condenser adopts any one of the heat exchangers.

In the heat exchanger and the air conditioner, the first fin group and the second fin group are arranged, the relative positions of the radiating fins and the gaps of the radiating fins are staggered, and the radiating fin on one adjacent side is aligned with the gap of the radiating fin on the other adjacent side, so that the effect of increasing the disturbance of the overflowed air and enhancing the convective heat transfer coefficient without blocking an overflowed air passage is achieved. The overflowed air of the heat exchanger can be obtained by the head-on direct blowing of the fan, and compared with the existing finned tube evaporator, the heat convection effect is greatly enhanced, the aims of reducing the production cost, reducing the production flow, reducing the occupied space and improving the heat exchange coefficient are fulfilled, and the improvement of the energy efficiency of the air conditioner is promoted. Furthermore, the interval can be set between the first fin group and the second fin group, so that the circumferential interval of the radiating fins can be ensured to be larger than the width of the radial fins, and the effect of increasing the disturbance of the overflowed air and not blocking the convection heat transfer coefficient of the overflowed air passage is further achieved.

Furthermore, in the heat exchanger and the air conditioner, because the air flow gathering part and the convection heat exchange part are arranged, the cylindrical radiation plate bears part of heating or refrigerating load, the blowing feeling of a human body can be reduced and the thermal comfort of the human body can be improved on the premise of ensuring the heating or refrigerating capacity; especially, when heating in winter, the heat radiation and heat exchange can obviously increase the thermal comfort of the human body.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic cross-sectional view of a heat exchanger according to one embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a partial structure of a heat exchanger according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a heat exchanger according to one embodiment of the invention.

Detailed Description

FIG. 1 is a schematic cross-sectional view of a heat exchanger according to one embodiment of the present invention. As shown in fig. 1 and with reference to fig. 2 and fig. a heat exchanger is provided in an embodiment of the present invention, which includes a convection heat exchanging part 30. The convection heat exchanger 30 includes a plurality of refrigerant heat transfer portions 31, a plurality of first fin groups, and a plurality of second fin groups. Each refrigerant heat transfer part 31 has a first edge and a second edge extending in the axial direction of the convection heat transfer part 30; the first edge is disposed inside the second edge. For example, each of the refrigerant heat conduction portions 31 may have a plate shape. And the plurality of refrigerant heat transfer parts 31 are uniformly distributed along the circumferential direction of the convection heat exchange part 30. One or more refrigerant passages 32 are provided in each refrigerant heat conduction portion 31.

Each of the first fin groups has a plurality of first heat dissipation fins extending along the axial direction of the convective heat transfer portion 30, and the plurality of first heat dissipation fins 33 of each of the first fin groups are disposed on one side of one of the refrigerant heat transfer portions 31 in a direction from the first edge of the refrigerant heat transfer portion 31 to the second edge thereof. Each of the second fin groups has a plurality of second heat dissipation fins 34 extending along the axial direction of the convective heat transfer part 30, and the plurality of second heat dissipation fins 34 of each of the second fin groups are disposed on the other side of one refrigerant heat transfer part 31 from the first edge of the refrigerant heat transfer part 31 to the direction of the second edge.

Specifically, in the first fin group and the second fin group between two adjacent refrigerant heat transfer portions 31: at least part of the extension surface of each first heat radiation fin 33 in the width direction of the first heat radiation fin 33 passes through the gap between the ends of two adjacent second heat radiation fins 34, so that the first heat radiation fin 33 is opposite to the gap between the ends of two adjacent second heat radiation fins 34; and at least a part of the extension surface of each second heat radiation fin 34 in the width direction of the second heat radiation fin 34 passes through the gap between the ends of two adjacent first heat radiation fins 33, so that the second heat radiation fin 34 is opposite to the gap between the ends of two adjacent first heat radiation fins 33. The arrangement can lead the relative positions of the radiating fins and the gaps of the radiating fins to be staggered, and the radiating fin on one adjacent side is aligned with the gap of the radiating fin on the other adjacent side, thereby achieving the effects of increasing the disturbance of the overflowed air and not blocking the convection heat transfer coefficient of the overflowed air passage.

In some embodiments of the present invention, a direction from the first edge to the second edge of each refrigerant heat conducting portion 31 is a radial direction of the convection heat exchanging portion 30. That is, each of the refrigerant heat transfer portions 31 extends in the axial direction of the convection heat exchanger 30 and also in the radial direction of the convection heat exchanger 30.

Alternatively, each of the first heat dissipation fins 33 and each of the second heat dissipation fins 34 extend from the corresponding refrigerant heat transfer portion 31 toward the corresponding side of the refrigerant heat transfer portion 31 and toward the radially outer side of the convective heat transfer portion 30. Preferably, the plurality of first heat dissipation fins 33 on one side of each refrigerant heat conduction portion 31 and the plurality of second heat dissipation fins 34 on the other side of the refrigerant heat conduction portion 31 are symmetrically disposed with respect to the refrigerant heat conduction portion 31. Further, a space is provided between the first fin group and the second fin group between two adjacent refrigerant heat conduction portions 31, that is, the first fin group and the second fin group are located on two sides of an angle bisection plane between two adjacent refrigerant heat conduction portions 31, and may also be symmetrically disposed about the angle bisection plane.

In some embodiments of the present invention, each of the cooling medium channels 32 extends along an axial direction of the convection heat exchanging part 30; and the cross-sectional profile of each refrigerant channel 32 may include a first rectangular frame and a plurality of second rectangular frames. The first rectangular frame extends in a direction pointing from the respective first edge to the second edge. And the second rectangular frames are arranged on two sides of the first rectangular frame and are communicated with the inner space of the first rectangular frame. The cross-sectional profile of each refrigerant channel 32 can be similar to the shapes of earth, ten, scholar, dry, king and the like, or the combination of the shapes.

In some embodiments of the present invention, as shown in fig. 3, the heat exchanger further includes an airflow converging portion 20 in a cylindrical shape with both ends open and extending in an axial direction of the convective heat transfer portion 30. For example, the outer contour of the cross section of the airflow gathering portion 20 is circular, semicircular, square, or fan-shaped. The convection heat exchanging part 30 is disposed inside the airflow converging part 20, and configured to generate heat or cold and transfer the heat or cold to air flowing through the inside of the airflow converging part 20. The airflow gathering part 20 is positioned on the outer shell surface of the heat exchanger and can be directly used as an outer shell. Each air flow gathering part 20 can gather air flow, and the disturbance convection heat exchange of the heat exchanger is enhanced.

In some embodiments of the present invention, the airflow gathering part 20 is made of a heat conductive material, and is configured to absorb heat or cold from an inner wall surface thereof and transmit the heat or cold to the outside from an outer wall surface thereof. The convection heat exchanging portion 30 is also configured to transfer heat or cold to the inner wall surface of the airflow converging portion 20, so that the heat exchanger is a radiation convection type heat exchanger. The heat exchanging part 30 generates heat or cold, and exchanges heat with the air inside the airflow gathering part 20 and exchanges heat with the inner wall surface of the airflow gathering part 20, the air after heat exchange can flow out of the airflow gathering part 20 for indoor or human body warm keeping or cooling, and the outer wall surface of the airflow gathering part 20 can radiate the heat or cold outwards for indoor or human body warm keeping or cooling. The cylindrical radiation plate bears a part of heating or refrigerating load, so that the blowing feeling of a human body can be reduced and the thermal comfort of the human body can be improved on the premise of ensuring the heating or refrigerating capacity; especially, when heating in winter, the heat radiation and heat exchange can obviously increase the thermal comfort of the human body.

In some embodiments of the present invention, the convection heat exchanging part 30 defines a central channel 38 extending in an axial direction of the convection heat exchanging part 30, at the center of the convection heat exchanging part 30. The central passage 38 may be configured to circulate air or coolant. In other embodiments, both ends of the central channel 38 are provided with a closed structure, and the central channel 38 may also be configured to provide fittings such as shunt tubes. Each coolant channel 32 is preferably a microchannel tube. The refrigerant heat conduction portion 31 and the airflow converging portion 20 can be made of copper or aluminum.

In some embodiments of the present invention, the convective heat transfer part 30 is formed by an extrusion process for manufacturing convenience, that is, the convective heat transfer part 30 is preferably a one-piece member. Alternatively, the entire heat transfer portion 30 and the airflow converging portion 20 may be formed by an extrusion process. That is, the entire structure of the convection heat exchanger 30 and the air flow converging portion 20 is an integrated member. An integrated workpiece is extruded, the first radiating fins 33 and the second radiating fins 34 are directly communicated with the wall surface of the refrigerant channel 32, the integrated workpiece belongs to the same component, the problem of thermal contact resistance does not exist between the first radiating fins and the second radiating fins, the thermal transfer resistance between the refrigerant and air can be obviously reduced, and the heat exchange performance is improved.

In some embodiments of the present invention, the refrigerant pipeline further has a main inlet pipe and a main outlet pipe; one end of each refrigerant channel 32 is communicated with the inlet manifold, and the other end is communicated with the outlet manifold, so that the plurality of refrigerant channels 32 are connected in parallel. In other embodiments of the invention, the heat exchanger may have at least one parallel unit, each parallel unit having a plurality of channel groups. Each channel group is provided with at least one refrigerant channel 32; the head and the tail of the plurality of channel groups of each parallel unit are sequentially connected in series. When the number of the parallel units is multiple, the multiple parallel units are connected in parallel. Each channel group may have one of the refrigerant heat transfer parts 31. For example, the number of the refrigerant heat conduction portions 31 is 16, wherein each 4 refrigerant heat conduction portions 31 form 4 channel groups, and the 4 channel groups are sequentially connected in series from head to tail, that is, each 4 refrigerant heat conduction portions 31 form one parallel unit, that is, 4 parallel units in total, and the 4 parallel units are connected in parallel with each other. Furthermore, the two ends of each refrigerant heat conduction portion 31 are provided with a collecting inlet pipe or a collecting outlet pipe, and the collecting inlet pipe or the collecting outlet pipe is arranged right opposite to the refrigerant heat conduction portion 31, so that the flowing of air flow in the convection heat exchange portion 30 is not obstructed, and the pipelines are conveniently and reasonably arranged.

The embodiment of the invention also provides an air conditioner which can comprise a compressor, a condenser, a throttling device and an evaporator. The evaporator and/or the condenser adopt the heat exchanger in any one of the above embodiments. Preferably, only the evaporator employs the heat exchanger of any of the above embodiments. Further, one end of the convection heat exchanging part 30 may be provided with a fan to force air to enter between the first and second heat dissipating fins 33 and 34 to exchange heat with the convection heat exchanging part 30.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.