CN216347958U - Heat exchanger and electrical equipment - Google Patents

Abstract

The utility model relates to the technical field of electrical equipment, in particular to a heat exchanger and electrical equipment. The heat exchanger provided by the utility model comprises a first collecting pipe, a second collecting pipe and a heat exchange assembly, wherein the heat exchange assembly is arranged between the first collecting pipe and the second collecting pipe, the heat exchange assembly comprises at least one first heat exchange pipe, the first heat exchange pipe comprises a heat exchange section and a flow guide section, the heat exchange section comprises an inlet end and an outlet end, the inlet end of the heat exchange section is communicated with the first collecting pipe, the flow guide section is connected to the outlet end of the heat exchange section, the flow guide section is communicated with the second collecting pipe, and the flow guide section has a deflection angle relative to the heat exchange section, so that a refrigerant is prevented from directly impacting the inner wall of the second collecting pipe, and the heat exchange performance of the heat exchanger is improved.

Description

Heat exchanger and electrical equipment

Technical Field

The utility model relates to the technical field of electrical equipment, in particular to a heat exchanger and electrical equipment.

Background

In order to achieve a heat exchange function, a heat exchanger is generally disposed in an electrical device such as an air conditioner or a heat pump water heater, and the heat exchanger is generally connected to a refrigerant circulation circuit of the air conditioner, and a compressor, a heat exchanger, and the like are connected to the refrigerant circulation circuit, so as to achieve a cooling or heating function by heat exchange between a refrigerant and air.

In the related art, a heat exchanger generally includes two headers and a plurality of heat exchange pipes, the plurality of heat exchange pipes are spaced between the two headers for circulating a refrigerant, two ends of each heat exchange pipe are respectively plugged into the two headers, the refrigerant can enter one end of each heat exchange pipe from one header and enter the other header from the other end of each heat exchange pipe, and the refrigerant completes a heat exchange process while flowing through the heat exchange pipes.

However, when entering the header from the heat exchange tubes, the refrigerant may impact the inner wall of the header, resulting in a pressure loss of the heat exchanger, which affects the heat exchange performance of the heat exchanger.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heat exchanger and electrical equipment, which can improve the heat exchange performance of the heat exchanger.

In a first aspect, the present application provides a heat exchanger, which includes a first header, a second header, and a heat exchange assembly, the heat exchange assembly being disposed between the first header and the second header, refrigerant being circulated between the first header and the second header through the heat exchange assembly, and performing a heat exchange process while flowing through the heat exchange assembly.

The heat exchange assembly comprises at least one first heat exchange tube, the first heat exchange tube comprises a heat exchange section and a flow guide section, the heat exchange section comprises an inlet end and an outlet end, the inlet end of the heat exchange section is communicated with one of the first collecting tube and the second collecting tube, the flow guide section is connected to the outlet end of the heat exchange section, the flow guide section is communicated with the other one of the first collecting tube and the second collecting tube, and the flow guide section has a deflection angle relative to the heat exchange section, namely, an included angle is formed between the outlet direction of the flow guide section and the heat exchange section.

In the heat exchanger that this application provided, when refrigerant flowed out from first heat exchange tube, the water conservancy diversion section can play the drainage effect to the refrigerant, changes the flow direction of refrigerant to avoid the refrigerant direct impact to the inner wall of first header or second header, reduced or eliminated the loss of pressure of heat exchanger, improved the heat exchange performance of heat exchanger.

As an alternative embodiment, the first header and the second header may be arranged in parallel, the first heat exchange tube may be plural, and the plural first heat exchange tubes may be arranged at intervals along the length direction of the first header, so that both ends of the first heat exchange tube may be connected to the sidewalls of the first header and the second header, respectively, and channels through which the refrigerant circulates may be formed between the sidewalls of the first header and the second header.

As an optional implementation manner, the flow guiding section is arc-shaped, and the flow guiding section and the heat exchange section are in smooth transition, so that the smoothness of refrigerant circulation is improved.

As an alternative embodiment, the deflection angle of the flow guide section relative to the heat exchange section can be 10-90 degrees, and the arrangement is such that the flow direction of the refrigerant can be changed by a corresponding angle, and the impact of the refrigerant and the inner wall of the second header is reduced.

As an alternative embodiment, when the flow guide section is communicated with the first header, the flow guide section can be positioned inside the first header, and when the flow guide section is communicated with the second header, the flow guide section can be positioned inside the second header, so that the assembly of the first heat exchange tube is facilitated, and meanwhile, the flow guide effect of the first heat exchange tube in the outflow of refrigerant is improved.

As an alternative embodiment, the first header may include an inflow section and an outflow section, the inlet end being connected to the inflow section, and in the refrigerant circuit, refrigerant may enter the first header from the inflow section, return to the first header after passing through the heat exchange assembly and the second header, and exit from the outflow section.

The heat exchange assembly can also comprise at least one second heat exchange tube, the first end of the second heat exchange tube is communicated with the outflow section, the second end of the second heat exchange tube is communicated with the second header, and after the refrigerant enters the second header from the first heat exchange tube, the refrigerant can enter the second heat exchange tube from the second header and flow into the outflow section of the first header from the second heat exchange tube, so that the heat exchange efficiency of the heat exchange assembly is improved.

As an alternative embodiment, the first heat exchange tube and the second heat exchange tube are located at different positions between the first header and the second header along the length direction of the first heat exchange tube, and the flow guide section can be deflected towards the second heat exchange tube, so that when the refrigerant flows out of the first heat exchange tube, the flow guide section can guide the refrigerant to flow towards the second end of the second heat exchange tube, so that the refrigerant can smoothly flow into the second heat exchange tube.

As an alternative embodiment, the first heat exchange tube may be a microchannel tube including a plurality of microchannels arranged in a width direction thereof, so that heat exchange efficiency may be improved while a volume occupied by the heat exchange assembly is reduced, and pressure resistance of the first heat exchange tube may be improved.

As an alternative embodiment, the heat exchange assembly may further include a plurality of fins, the plurality of fins may be arranged between the first header and the second header at intervals along the length direction of the first heat exchange tube, and an outer wall of the first heat exchange tube may contact the fins, so that heat conduction may be performed between the first heat exchange tube and the fins, and heat exchange efficiency may be improved by the fins.

In a second aspect, the present application provides an electrical apparatus comprising the heat exchanger of the first aspect described above.

The utility model provides a heat exchanger and electrical equipment, wherein the heat exchanger comprises a first collecting pipe, a second collecting pipe and a heat exchange assembly, the heat exchange assembly is arranged between the first collecting pipe and the second collecting pipe, the heat exchange assembly comprises at least one first heat exchange pipe, the first heat exchange pipe comprises a heat exchange section and a flow guide section, the heat exchange section comprises an inlet end and an outlet end, the inlet end of the heat exchange section is communicated with the first collecting pipe, the flow guide section is connected to the outlet end of the heat exchange section, the flow guide section is communicated with the second collecting pipe, the flow guide section has a deflection angle relative to the heat exchange section, the flow guide section can guide a refrigerant and change the flow direction of the refrigerant, so that the refrigerant is prevented from directly impacting the inner wall of the second collecting pipe, the pressure loss of the heat exchanger is reduced or eliminated, and the heat exchange performance of the heat exchanger is improved.

In addition to the technical problems solved by the embodiments of the present application, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the heat exchanger and the electrical equipment provided by the present application, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail in the detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a heat exchanger provided in an embodiment of the present application;

FIG. 2 is a partial view of position A of FIG. 1;

FIG. 3 is a top view of a first heat exchange tube in a heat exchanger according to an embodiment of the present application;

fig. 4 is a side view of a first heat exchange tube in a heat exchanger provided by an embodiment of the present application.

Description of reference numerals:

100-a heat exchanger;

110 — a first header;

111-inflow section;

112-an outflow section;

113-a separator;

120-a second header;

130-a heat exchange assembly;

131-a first heat exchange tube;

1311-heat exchange section;

1312-a flow guide section;

1313-an inlet end;

1314-outlet end;

132-a second heat exchange tube;

133-a fin;

140-an inlet duct;

150-outlet duct.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.

Next, it should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the direction or positional relationship shown in the drawings, which are merely for convenience of description, and do not indicate or imply that a device or a member must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In order to realize the temperature regulation function of electrical equipment such as an air conditioner, a heat pump water heater and the like, a refrigerant circulation circuit is formed inside the electrical equipment, a compressor, a heat exchanger and other components are connected in the refrigerant circulation circuit, and the state of refrigerant can be changed when the refrigerant flows through different components so as to realize the heat exchange between the refrigerant and air. The heat exchanger generally includes two headers and a plurality of heat exchange pipes, the plurality of heat exchange pipes are arranged between the two headers at intervals and are used for circulating a refrigerant, two ends of each heat exchange pipe are respectively plugged on the two headers, the refrigerant can enter one end of each heat exchange pipe from one side of the header and enter the other header from the other end of each heat exchange pipe, when flowing through the heat exchange pipes, the refrigerant completes a heat exchange process, when entering the headers from the heat exchange pipes, the refrigerant impacts the inner walls of the headers to cause kinetic energy loss of the refrigerant flowing, which causes pressure loss of the heat exchanger, and in order to keep the refrigerant to further circulate at a certain flow rate, a compressor is required to increase pressure difference for driving, thereby affecting the heat exchange performance of the heat exchanger.

In view of the above problems, embodiments of the present application provide a heat exchanger and an electrical apparatus, which reduce or eliminate the impact of the refrigerant on the inner wall of the header when the refrigerant flows out of the heat exchange pipeline by changing the structure of the heat exchange pipeline and adjusting the flow path of the refrigerant in the heat exchanger, thereby reducing the kinetic energy loss of the refrigerant, avoiding the pressure loss of the heat exchanger, and improving the heat exchange performance of the heat exchanger.

Example one

The present embodiment provides a heat exchanger, which is applied to an electrical apparatus circuit such as an air conditioner, a heat pump water heater, and the like, and can be connected in a circulation loop of a refrigerant through a refrigerant pipeline, and when the electrical apparatus realizes a temperature adjustment function, the refrigerant can flow through the heat exchanger to complete a heat exchange process with outside air. In addition, the heat exchanger may be a condenser or an evaporator, which is not limited in this embodiment, and the technical solution of the heat exchanger in the embodiment of the present application is described below.

Fig. 1 is a schematic structural diagram of a heat exchanger provided in an embodiment of the present application, fig. 2 is a partial view of a position a in fig. 1, fig. 3 is a top view of a first heat exchange tube in the heat exchanger provided in the embodiment of the present application, and fig. 4 is a side view of the first heat exchange tube in the heat exchanger provided in the embodiment of the present application.

As shown in fig. 1 to 4, the heat exchanger 100 provided by the present embodiment includes a first header 110, a second header 120, and a heat exchange assembly 130, a heat exchange space is formed between the first header 110 and the second header 120, the heat exchange assembly 130 is disposed between the first header 110 and the second header 120, a refrigerant can circulate between the first header 110 and the second header 120 through the heat exchange assembly 130, and a heat exchange process is completed when the refrigerant flows through the heat exchange assembly.

The heat exchange assembly 130 includes at least one first heat exchange tube 131, the first heat exchange tube 131 extending from one side of the first header 110 to one side of the second header 120, wherein the first heat exchange tube 131 includes a heat exchange section 1311 and a flow guide section 1312, the heat exchange section 1311 includes an inlet end 1313 and an outlet end 1314, the inlet end 1313 of the heat exchange section 1311 may communicate with one of the first header 110 and the second header 120, the flow guide section 1312 is connected to the outlet end 1314 of the heat exchange section 1311, refrigerant may flow from the heat exchange section 1311 to the flow guide section 1312 and flow out of the flow guide section 1312, and the flow guide section 1312 may communicate with the other of the first header 110 and the second header 120, the flow guide section 1312 has a deflection angle with respect to the heat exchange section 1311, and the flow guide section 1312 may guide the outflow of the refrigerant.

It can be understood that the direction in which the refrigerant flows out of the heat exchange section 1311 is approximately the direction in which the refrigerant flows into the flow guide section 1312, and the direction in which the refrigerant flows out of the flow guide section 1312 is different from the direction in which the refrigerant flows into the flow guide section 1312, and therefore, when the refrigerant flows out of the first heat exchange pipe 131, the flow guide section 1312 may change the flow direction of the refrigerant, thereby preventing the refrigerant from directly striking the inner wall of the first header 110 or the second header 120, reducing or eliminating the pressure loss of the heat exchanger 100, and improving the heat exchange performance of the heat exchanger 100.

Furthermore, it should be noted that flow guiding section 1312 is in communication with first header 110 or second header 120, and mainly depends on the refrigerant flowing direction, when the refrigerant flows from first header 110 to second header 120, flow guiding section 1312 is used for guiding the refrigerant to flow out, flow guiding section 1312 is in communication with second header 120, and when the refrigerant flows from second header 120 to first header 110, flow guiding section 1312 is in communication with first header 110.

In some embodiments, the first header 110 and the second header 120 may be disposed in parallel, the first heat exchange tube 131 may be plural, and the plural first heat exchange tubes 131 may be disposed at intervals in a length direction of the first header 110, so that both ends of the first heat exchange tube 131 may be connected to sidewalls of the first header 110 and the second header 120, respectively, and channels through which a refrigerant circulates may be formed between the sidewalls of the first header 110 and the second header 120.

It is to be understood that the first header 110 and the second header 120 may be used for refrigerant collecting or dividing, for example, when the refrigerant flows from the first header 110 to the second header 120, the first header 110 may divide the refrigerant into a plurality of sub-streams as a result of communication with the plurality of first heat exchange tubes 131 at the first header 110 to enter the different first heat exchange tubes 131, respectively, and after the refrigerant flows out of the first heat exchange tubes 131, the sub-streams of the refrigerant in the plurality of first heat exchange tubes 131 may be collected at the second header 120, so that heat exchange efficiency may be improved.

When the refrigerant flows through the first heat exchange tubes 131 once, the refrigerant undergoes one heat exchange process, i.e. flows from the first header 110 to the second header 120, or flows from the second header 120 to the first header 110, which is one heat exchange process, in a practical application scenario, the heat exchange process of the refrigerant may be one time, two times or more, i.e. the refrigerant may perform one or more reciprocating flows between the first header 110 and the second header 120, so as to improve the overall heat exchange efficiency of the heat exchanger 100.

It should be noted that the reciprocating flow referred to herein does not refer to the refrigerant flowing back and forth in the same first heat exchange tube 131, but refers to the refrigerant flowing back and forth between the first header 110 and the second header 120 in the flowing direction, and each reciprocating flow can flow through a different first heat exchange tube 131, i.e. the flow of the refrigerant between the first header 110 and the second header 120 is a continuous process, and flows through different first heat exchange tubes 131 in sequence for multiple heat exchanges.

In addition, since the extending directions of the first header 110 and the second header 120 may be perpendicular to the extending direction of the first heat exchange tube 131, when the refrigerant flows out from the first heat exchange tube 131, and when the refrigerant collects and flows in the first header 110 or the second header 120, the refrigerant may flow along the extending direction of the first header 110 or the second header 120, and the flow direction of the refrigerant needs to have a turn of approximately 90 °, therefore, during the reciprocating flow of the refrigerant, the end of the first heat exchange tube 131 where the refrigerant flows out is provided with a flow guide section 1312, which can guide the refrigerant, deflect the flow direction of the refrigerant from the flowing direction of the first heat exchange tube 131 to the flow direction of the refrigerant in the first header 110 or the second header 120, avoid the refrigerant directly impacting the inner wall of the first header 110 or the second header 120, and reduce the kinetic energy loss of the refrigerant.

The specific structure of the first heat exchange tube 131 and the manner of flow guiding thereof will be described in detail below.

With continued reference to fig. 3 and 4, as a possible implementation manner, the flow guiding section 1312 may have an arc shape, and the flow guiding section 1312 may smoothly transition with the heat exchanging section 1311, so as to improve the smoothness of the refrigerant flowing.

It is understood that the cross-sectional profile of the flow guiding section 1312 may be a circular arc or other arc shape, and the cross-sectional size of the flow guiding section 1312 may be equal along the extending direction of the flow guiding section 1312, so as to ensure the stability of the refrigerant flow and reduce the impact. The flow guide section 1312 guides the refrigerant to change the flow direction by a degree corresponding to the radian of the cross-sectional profile of the flow guide section 1312, when the cross-sectional profile of the flow guide section 1312 is a circular arc, if the sizes of the spaces in the first header 110 and the second header 120 are determined, the degree of the flow direction deflection angle of the refrigerant is determined by the curvature of the cross-sectional profile of the flow guide section 1312, and when the curvature of the cross-sectional profile of the flow guide section 1312 is larger, the flow direction deflection angle of the refrigerant is larger.

For example, the deflection angle a of the flow guiding section 1312 with respect to the heat exchange section 1311 may range from 10 ° to 90 °, and by selecting different curvature of the cross-sectional profile of the flow guiding section 1312, the flow direction of the refrigerant may be changed by a corresponding angle, and the impact of the refrigerant with the inner wall of the second header 120 may be reduced. For example, a may be 10 °, 11 °, 20 °, 30 °, 40 °, 50 °, 60 °, 70 °, 80 °, 89 °, 90 °, and the like, and since the faster the flow velocity of the refrigerant is, the greater the impact of the refrigerant with the inner wall of the first header 110 or the second header 120 is, the greater the kinetic energy loss is, the specific value of a may be set according to the size of the actual first header 110, the actual second header 120, and the actual size of the first heat exchange tube 131, and the size of the flow velocity of the refrigerant, which is not limited in this embodiment.

To achieve better drainage, flow directing section 1312 may be located inside first header 110 or second header 120 such that the process of draining refrigerant by flow directing section 1312 occurs within first header 110 or second header 120.

It will be appreciated that both ends of the heat exchange section 1311 may be at least partially inserted into the first header 110 and the second header 120, respectively, and thus the arrangement is also convenient for assembling the first heat exchange tubes 131 with the second header 120, and the position where the heat exchange section 1311 is connected with the side wall of the first header 110 or the second header 120 may be hermetically connected to prevent leakage of the refrigerant.

Illustratively, both ends of the heat exchange segment 1311 may be welded to the sidewalls of the first and second headers 110 and 120, respectively, and the inlet and outlet ends 1314 of the heat exchange segment 1311 are inserted inside the first or second header 110 or 120, respectively, to ensure sealing performance.

It should be noted that the heat exchange section 1311 and the flow guiding section 1312 may be an integral piece, and are integrally formed through one or more processes during manufacturing, for example, the flow guiding section 1312 may be formed through a bending process, or both may be a split design, when the split design is adopted, the flow guiding section 1312 may be welded to the heat exchange section 1311, and the specific connection and forming manner of the heat exchange section 1311 and the flow guiding section 1312 is not limited in this embodiment.

Since the refrigerant can flow back and forth between the first header 110 and the second header 120 through different heat exchange tubes, and the deflection manner of the flow guide sections 1312 of the first heat exchange tubes 131 depends on the flow tendency of the refrigerant between the first header 110 or the second header 120, the following description will be made in detail by taking a single back and forth heat exchange of the refrigerant as an example.

With continued reference to fig. 1 and 2, in one possible implementation, the area between the first header 110 and the second header 120 may be divided into a first heat exchange zone and a second heat exchange zone, wherein the refrigerant in the heat exchange tubes in the first heat exchange zone flows from the first header 110 to the second header 120, and the refrigerant in the heat exchange tubes in the second heat exchange zone flows from the second header 120 to the first header 110, the first header 110 may include an inflow section 111 and an outflow section 112, the inflow section 111 is connected with a refrigerant inlet tube 140, the outflow section 112 is connected with a refrigerant outlet tube 150, and the heat exchanger 100 is connected in the refrigerant circuit through the inlet tube 140 and the outlet tube 150.

Wherein a partition 113 may be provided in the first header 110, and the space inside the first header is divided into an inflow section 111 and an outflow section 112 by the partition 113, and the inflow section 111 and the outflow section 112 are isolated from each other.

It will be appreciated that the refrigerant may enter the inflow section 111 from the inlet conduit 140 and enter the heat exchange tubes located in the first heat exchange zone from the inflow section 111 and thereafter flow into the second header 120, with the refrigerant flowing within the heat exchange tubes to the second heat exchange zone via the second header 120 and entering the outflow section 112 from the heat exchange tubes of the second heat exchange zone and finally exiting the heat exchanger 100 via the outlet conduit 150.

The heat exchange assembly 130 may further include at least one second heat exchange tube 132, the first heat exchange tube 131 may be located at the first heat exchange region, the second heat exchange tube 132 may be located at the second heat exchange region, the inlet end 1313 of the first heat exchange tube 131 may communicate with the inflow section 111 of the first header 110, the outlet end 1314 may communicate with the second header 120, and the first end of the second heat exchange tube 132 may communicate with the outflow section 112, the second end of the second heat exchange tube 132 communicates with the second header 120, and after the refrigerant enters the second header 120 from the first heat exchange tube 131, the refrigerant may enter the second heat exchange tube 132 from the second header 120 and flow into the outflow section 112 of the first header 110 from the second heat exchange tube.

The first heat exchange tube 131 and the second heat exchange tube may be located at different positions between the first header 110 and the second header 120, and the flow guide section 1312 may be deflected in the direction of the second heat exchange tube 132, so that when the refrigerant flows out of the first heat exchange tube 131, the flow guide section 1312 may guide the refrigerant to flow toward the second end of the second heat exchange tube 132, so that the refrigerant may smoothly flow into the second heat exchange tube 132.

It should be noted that the second heat exchange tube 132 may have a structure and an arrangement similar to the heat exchange section 1311 of the first heat exchange tube 131, that is, two ends of the second heat exchange tube 132 may be respectively inserted into the first header 110 and the second header 120, and will not be described herein again.

In addition, the second heat exchanging pipe 132 and the first heat exchanging pipe 131 may be plural and arranged in sequence at intervals along the length direction of the first header 110, and are parallel to each other, so as to form a parallel flow heat exchanging structure, thereby improving heat exchanging efficiency.

In some embodiments, the first heat exchange tube 131 may be a microchannel tube, and the microchannel tube may include a plurality of microchannels arranged in a width direction thereof, so that heat exchange efficiency may be improved while a volume occupied by the heat exchange assembly 130 may be reduced, and pressure resistance of the first heat exchange tube 131 may be improved.

It can be understood by those skilled in the art that the microchannel tube formed by arranging a plurality of microchannels may have a flat structure, the cross-sectional shape of the microchannels may be circular, square or other regular shapes, the shape and size of the microchannel are not specifically limited in this embodiment, and the microchannel tube may be made of metal such as iron, aluminum, copper, nickel, or an alloy thereof, or may be made of ceramic, silicon, or the like.

It should be noted that the second heat exchanging pipe 132 may have a similar structure and material to the first heat exchanging pipe 131, and is not described herein again.

As an alternative embodiment, the heat exchange assembly 130 may further include a plurality of fins 133, the plurality of fins 133 may be arranged between the first header 110 and the second header 120 at intervals along the length direction of the first heat exchange tube 131, the fins 133 have a certain area for heat exchange, and the outer wall of the first heat exchange tube 131 may contact the fins 133, so that heat conduction may be performed between the first heat exchange tube 131 and the fins 133, and the heat exchange efficiency may be improved by the fins 133.

It is understood that the fin 133 may be provided with through holes, the shape of which may match the cross-sectional shape of the first heat exchange tube 131 or the second heat exchange tube 132, the first heat exchange tube 131 and the second heat exchange tube 132 may pass through the corresponding through holes, and the outer walls of the first heat exchange tube 131 and the second heat exchange tube 132 may respectively contact the inner edges of the corresponding through holes, thereby achieving heat conduction between the first heat exchange tube 131 and the fin 133, and between the second heat exchange tube 132 and the fin 133.

Illustratively, the first heat exchange tube 131 and the fin 133, and the second heat exchange tube 132 and the fin 133 may be connected by welding, so as to ensure the reliability of the connection.

The utility model provides a heat exchanger, which comprises a first collecting pipe, a second collecting pipe and a heat exchange assembly, wherein the heat exchange assembly is arranged between the first collecting pipe and the second collecting pipe, the heat exchange assembly comprises at least one first heat exchange pipe, the first heat exchange pipe comprises a heat exchange section and a flow guide section, the heat exchange section comprises an inlet end and an outlet end, the inlet end of the heat exchange section is communicated with the first collecting pipe, the flow guide section is connected to the outlet end of the heat exchange section, the flow guide section is communicated with the second collecting pipe, the flow guide section has a deflection angle relative to the heat exchange section, and the flow guide section can play a role in guiding a refrigerant and change the flow direction of the refrigerant, so that the refrigerant is prevented from directly impacting the inner wall of the second collecting pipe, the pressure loss of the heat exchanger is reduced or eliminated, and the heat exchange performance of the heat exchanger is improved.

Example two

The embodiment provides an electrical apparatus, which includes the heat exchanger in the first embodiment, the electrical apparatus may be an air conditioner, a heat pump water heater, and the like, and the heat exchanger is used to implement a heat exchange function in different types of electrical apparatuses.

The electrical equipment can comprise a compressor, a refrigerant pipeline and a heat exchanger, wherein the compressor is communicated with the heat exchanger through the refrigerant pipeline, and a refrigerant circulation loop is formed. The following description will be made by taking an air conditioner as an example.

It can be understood that a plurality of heat exchangers in the air conditioner may be provided, and the air conditioner may include an evaporator and a condenser, the condenser is connected to an outlet side of the compressor, the evaporator is connected to an inlet side of the compressor, all technical solutions of the heat exchanger in the first embodiment may be adopted for both the evaporator and the condenser, and the air conditioner provided in this embodiment at least has all technical effects of the technical solutions of the heat exchanger in the first embodiment, which is not described herein again.

It should be noted that the electrical equipment in this embodiment may be a household air conditioner, for example, a floor air conditioner or a suspension air conditioner, a central air conditioner or a commercial air conditioner, or a vehicle-mounted air conditioner, and the electrical equipment in this embodiment may also be a heat pump water heater or other household or commercial electrical equipment equipped with a heat exchanger, which is not limited in this respect.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A heat exchanger comprising a first header, a second header, and a heat exchange assembly disposed between the first header and the second header;

the heat exchange assembly comprises at least one first heat exchange tube, the first heat exchange tube comprises a heat exchange section and a flow guide section, the heat exchange section comprises an inlet end and an outlet end, one of the first header and the second header is communicated with the inlet end, the flow guide section is connected to the outlet end, the other of the first header and the second header is communicated with the flow guide section, and the outlet direction of the flow guide section forms an included angle relative to the heat exchange section.

2. The heat exchanger as claimed in claim 1, wherein the first header is parallel to the second header, the first heat exchange tubes are plural, and the plural first heat exchange tubes are arranged at intervals along a length direction of the first header.

3. The heat exchanger of claim 1, wherein the flow guide section is arcuate and has a smooth transition with the heat exchange section.

4. The heat exchanger according to claim 3, wherein the outlet direction of the flow guiding section is at an angle in the range of 10 ° to 90 ° with respect to the heat exchange section.

5. A heat exchanger according to claim 3, wherein the flow guide section is located inside the first or second header.

6. The heat exchanger according to any one of claims 1 to 5, wherein the first header comprises an inflow section and an outflow section, the inlet end being connected to the inflow section;

the heat exchange assembly further comprises at least one second heat exchange tube, a first end of the second heat exchange tube is communicated with the outflow section, and a second end of the second heat exchange tube is communicated with the second header.

7. The heat exchanger of claim 6, wherein the first heat exchange tube and the second heat exchange tube are located at different positions along the length of the first header, and the flow guide section is deflected in the direction of the second heat exchange tube.

8. The heat exchanger according to any one of claims 1 to 5, wherein the first heat exchange tube is a microchannel tube comprising a plurality of microchannels arranged in a width direction of the first heat exchange tube.

9. The heat exchanger of any one of claims 1 to 5, wherein the heat exchange assembly further comprises a plurality of fins arranged at intervals along the length of the first heat exchange tube between the first header and the second header, the outer wall of the first heat exchange tube being in contact with the fins.

10. An electrical apparatus, characterized in that it comprises a heat exchanger according to any one of claims 1 to 9.

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