Collecting pipe, heat exchanger and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, in particular to a collecting pipe, a heat exchanger and an air conditioner, the collecting pipe comprises an outer pipe body, a first inner pipe body and a separation part, the separation part is arranged in the outer pipe body to divide the inner part of the outer pipe body into a first cavity, a second cavity and a third cavity, the first inner pipe body is inserted into the first cavity, and the second inner pipe body is inserted into the third cavity. The first inner pipe body is provided with a first spraying hole, the first spraying hole is communicated with the first cavity, the separation part is provided with a second spraying hole and an opening, the first cavity is communicated with the second cavity through the opening, and the second cavity is communicated with the third cavity through the second spraying hole. Different heat exchange requirements of external heat exchange media at the heat exchange pipes can be met, and the design of the heat exchanger is more scientific and reasonable.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field especially relates to a manifold, heat exchanger and air conditioner. BACKGROUND

[0002] In air conditioning circulating system, heat exchanger distributes gas-liquid two-phase refrigerant to each pipeline of evaporator to carry out heat exchange, in the existing microchannel heat exchanger, cannot carry out relatively independent distribution to the refrigerant that enters different microchannels, makes the refrigerant flow that microchannel is generally identical, difficult to aim at different position and heat exchange demand microchannel to achieve reasonable refrigerant distribution. CONTENT

[0003] The utility model provides a manifold, heat exchanger and air conditioner to solve one of the defects in prior art, because first cavity and second cavity pass through the opening of division part intercommunication, the area of opening is far less than the cross section area of internal refrigerant flow of first cavity and second cavity, and the pressure loss is relatively big, make the refrigerant amount of second cavity is less than the refrigerant amount that exists in first cavity, and then make the refrigerant amount in third cavity and the refrigerant amount in first cavity are different, namely to reach the requirement of different heat exchange capacity of first channel and second channel, can adapt to the different heat exchange demand of external heat exchange medium at heat exchange pipe, and the heat exchanger is more scientific and reasonable in design.

[0004] The utility model provides a manifold, including outer pipe body, first inner pipe body and division part, the division part sets up in the outer pipe body inside, to divide the outer pipe body inside into first cavity, second cavity and third cavity, the first inner pipe body is inserted in first cavity, first inner pipe body is equipped with first spray hole, first spray hole with first cavity intercommunication, the division part is equipped with second spray hole and opening, first cavity passes through the opening second cavity intercommunication, second cavity passes through second spray hole with third cavity intercommunication.

[0005] According to the utility model provides a kind of manifold, the division part includes baffle and second inner pipe body, the baffle is equipped with the opening, the second inner pipe body is equipped with the second spray hole, the import of the second inner pipe body is connected with the baffle, and is closed with the outer pipe body Connection, the inside of the second inner pipe body is surrounded and formed into the second cavity, the outside of the second inner pipe body, the baffle and the outer pipe body are surrounded and formed into the third cavity.

[0006] According to the utility model provides a kind of manifold, the division part further includes first connecting plate, the import of the second inner pipe body is connected with the outer pipe body and the opening by the first connecting plate.

[0007] According to the utility model provide a kind of manifold, the partition plate extends along the axial direction of the outer pipe body, the outer pipe body extends along vertical direction, the lower end of the partition plate and the lower end of the outer pipe body are enclosed to form the opening, the upper end of the partition plate and the upper end of the outer pipe body are closed connection, or, the axial direction of the outer pipe body extends along horizontal direction, one end of the partition plate and one end of the outer pipe body are enclosed to form the opening, and the other end of the partition plate and the other end of the outer pipe body have gap, the partition further includes second connecting plate, the partition plate is connected with the outer pipe body by the second connecting plate, and the second connecting plate is provided with through-hole, and the second inner pipe body is arranged between the first connecting plate and the second connecting plate.

[0008] According to the utility model provide a kind of manifold, the second inner pipe body extends along the axial direction of the outer pipe body, the axial direction of the outer pipe body extends along vertical direction, and the upper end of the second inner pipe body is closed connection with the upper end of the outer pipe body, or, the axial direction of the outer pipe body extends along horizontal direction, and the second inner pipe body has gap between the pipe end of the outer pipe body close to the one end away from the opening.

[0009] According to the utility model provide a kind of manifold, the liquid inlet of the first inner pipe body is located in the middle of the first inner pipe body, and the second inner pipe body has gap between the pipe end of the outer pipe body close to the one end away from the opening.

[0010] According to the utility model provide a kind of manifold, the liquid inlet of the first inner pipe body is located in the middle of the first inner pipe body, or, the axial direction of the outer pipe body extends along horizontal direction, and the first inner pipe body is closed connection with the pipe end of the outer pipe body close to the one end close to the opening, and the first inner pipe body has gap between the pipe end of the outer pipe body close to the one end away from the opening.

[0011] The utility model further provides a kind of heat exchanger, including heat exchange pipe and as described above manifold, the heat exchange pipe is connected with the outer pipe body, and the first channel and second channel are equipped in the heat exchange pipe, the first channel is communicated with the first cavity, and the second channel is communicated with the third cavity.

[0012] According to the utility model provide a kind of heat exchanger, the first channel and the second channel are sequentially arranged along the wind direction of air blown through the heat exchange pipe;The flow direction of the refrigerant of at least one of the first spray hole and the second spray hole is opposite to the flow direction of the refrigerant at the inlet of the heat exchange pipe.

[0013] The utility model further provides a kind of air conditioner, including as described above heat exchanger.

[0014] The utility model provides a manifold, the outer tube body, the partition and first inner tube body jointly constitute the structure of manifold, the outer tube body is set in the outside of first inner tube body, and the upper pipe mouth and lower pipe mouth of outer tube body are all closed, the space between the outer wall of first inner tube body and the inner wall of outer tube body forms the cavity, the partition is arranged in the cavity, and the cavity is separated into first cavity, second cavity and third cavity, first inner tube body is inserted into first cavity from the outside of outer tube body, and the extension direction of first inner tube body in first cavity is same with the axial direction of outer tube body, that is, the outer tube body and the partition cooperate in the outside of first inner tube body and enclose first cavity, and the cavity except first cavity is separated into second cavity and third cavity by the partition.

[0015] The refrigerant flows through the inside of the first inner tube body, the refrigerant in the first inner tube body is sprayed into the first cavity through the first spray hole, and after being uniformly dispersed in the first cavity by the reflection of the inner wall of the corresponding outer tube body and the partition, a part of the refrigerant exchanges heat with the external heat exchange medium, and another part of the refrigerant enters the second cavity through the opening of the partition, flows in the second cavity, and is sprayed into the third cavity through the second spray hole of the partition, and after being uniformly dispersed in the third cavity by the reflection of the inner wall of the corresponding outer tube body and the partition, the refrigerant exchanges heat with the external heat exchange medium again.

[0016] After the refrigerant enters the manifold from the first inner tube body, the refrigerant is separated twice by the first inner tube body and the partition, and the first cavity and the third cavity are independent of each other, that is, the two parts of the heat exchange medium come from two relatively independent cavities, and do not interfere with each other, which is beneficial to form completely different heat exchange effects. Since the first cavity and the second cavity are communicated through the opening of the partition, the area of the opening is much smaller than the cross-sectional area of the refrigerant flow in the first cavity and the second cavity, the pressure loss is relatively large, the amount of refrigerant flowing to the second cavity is smaller than the amount of refrigerant in the first cavity, and the amount of refrigerant in the third cavity is different from the amount of refrigerant in the first cavity, that is, the heat exchange amount of the refrigerant in the two cavities is different, which can adapt to the different heat exchange requirements of the external heat exchange medium, and the heat exchanger is designed more scientifically and reasonably. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0018] Figure 1 is a structural schematic view of a heat exchanger provided by an embodiment of the present application;

[0019] Figure 2 is a structural schematic view of a collecting pipe of a heat exchanger provided by an embodiment of the present application;

[0020] Figure 3 is a structural schematic view of a cross section of a collecting pipe of a heat exchanger provided by an embodiment of the present application;

[0021] Figure 4 is a structural schematic view of a heat exchanger provided by an embodiment of the present application;

[0022] Figure 5 is a structural schematic view of a collecting pipe of a heat exchanger provided by an embodiment of the present application;

[0023] Figure 6 is a structural schematic view of a cross section of a collecting pipe of a heat exchanger provided by an embodiment of the present application;

[0024] Figure 7 is a structural schematic view of a heat exchanger provided by an embodiment of the present application;

[0025] Figure 8 is a structural schematic view of a collecting pipe of a heat exchanger provided by an embodiment of the present application;

[0026] Figure 9 is a structural schematic view of a heat exchanger provided by an embodiment of the present application;

[0027] Figure 10 is a structural schematic view of a heat exchanger pipe of a heat exchanger provided by an embodiment of the present application;

[0028] Figure 11 is a structural schematic view of a cross section of a collecting pipe of a heat exchanger provided by an embodiment of the present application;

[0029] Figure 12 is a structural schematic view of a collecting pipe of a heat exchanger provided by an embodiment of the present application.

[0030] Reference signs:

[0031] 100, outer pipe body; 110, first cavity; 120, second cavity; 130, third cavity;

[0032] 200, first inner pipe body; 210, first spray hole; 220, liquid inlet pipe section;

[0033] 300, partition; 310, partition plate; 311, opening; 320, second inner tube body; 321, second injection hole; 330, first connecting plate; 340, second connecting plate; 341, through hole;

[0034] 400, heat exchange pipe; 410, first channel; 420, second channel. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely below by combining with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0036] In the following examples, Figures 1 to 10 The arrow direction in the figure is the wind direction.

[0037] As Figure 1 , Figure 2 , Figure 3 , Figure 10 , Figure 11 and Figure 12 indicated, the current collecting pipe provided by the utility model embodiment comprises an outer tube body 100, a first inner tube body 200 and a partition 300, the partition 300 is arranged inside the outer tube body 100 to separate the inside of the outer tube body 100 into a first cavity 110, a second cavity 120 and a third cavity 130, the first inner tube body 200 is inserted into the first cavity 110, the first inner tube body 200 is provided with a first injection hole 210, the first injection hole 210 is communicated with the first cavity 110, the partition 300 is provided with a second injection hole 321 and an opening 311, the first cavity 110 is communicated with the second cavity 120 through the opening 311, and the second cavity 120 is communicated with the third cavity 130 through the second injection hole 321.

[0038] The heat exchanger of the embodiment of the utility model, the outer tube body 100, the partition 300 and the first inner tube body 200 jointly constitute the structure of the header, the outer tube body 100 is sleeved on the outside of the first inner tube body 200, and the upper pipe opening and the lower pipe opening of the outer tube body 100 are closed, so that the space between the outer wall of the first inner tube body 200 and the inner wall of the outer tube body 100 forms a cavity, the partition 300 is arranged in the cavity and separates the cavity into a first cavity 110, a second cavity 120 and a third cavity 130, the first inner tube body 200 is inserted into the first cavity 110 from the outside of the outer tube body 100, and the extension direction of the first inner tube body 200 in the first cavity 110 is the same as the axial direction of the outer tube body 100, that is, the outer tube body 100 and the partition 300 are matched on the outside of the first inner tube body 200 to surround the first cavity 110, and the cavity except the first cavity 110 is separated into the second cavity 120 and the third cavity 130 by the partition 300. The pipe wall of the first inner tube body 200 is provided with a first spray hole 210 in the range of the first cavity 110, the inside of the first inner tube body 200 is communicated with the first cavity 110 through the first spray hole 210, the first cavity 110 is communicated with the second cavity 120 through the opening 311 of the partition 300, and the second cavity 120 is communicated with the third cavity 130 through the second spray hole 321 of the partition 300.

[0039] The refrigerant flows in the inside of the first inner tube body 200, the refrigerant in the first inner tube body 200 is sprayed into the first cavity 110 through the first spray hole 210, is uniformly dispersed in the first cavity 110 after being reflected on the inner wall of the corresponding outer tube body 100 and the partition 300 of the first cavity 110, a part of the refrigerant exchanges heat with the external heat exchange medium, another part of the refrigerant enters the second cavity 120 through the opening 311 of the partition 300, flows in the second cavity 120 and is sprayed into the third cavity 130 through the second spray hole 321 of the partition 300, is uniformly dispersed in the third cavity 130 after being reflected on the inner wall of the corresponding outer tube body 100 and the partition 300 of the third cavity 130, and then exchanges heat with the external heat exchange medium.

[0040] The refrigerant enters the header pipe from the first inner pipe body 200, and is separated twice by the first inner pipe body 200 and the partition 300 in sequence, and the first cavity 110 and the third cavity 130 are independent of each other, that is, the refrigerants of the two parts of heat exchange come from two relatively independent cavities, and do not interfere with each other, and do not affect each other, which is beneficial to form completely different heat exchange effects. Since the first cavity 110 and the second cavity 120 are communicated through the opening 311 of the partition 300, the area of the opening 311 is much smaller than the cross-sectional area of the refrigerant flow in the first cavity 110 and the second cavity 120, and the pressure loss is relatively large, so that the amount of refrigerant flowing to the second cavity 120 is smaller than the amount of refrigerant existing in the first cavity 110, and then the amount of refrigerant in the third cavity 130 is different from the amount of refrigerant in the first cavity 110, that is, to meet the requirement of different heat exchange amounts of refrigerants in the two cavities, the heat exchange demand of different external heat exchange media can be adapted, and the heat exchanger is more scientific and reasonable in design.

[0041] In the embodiment, the axial direction of the outer pipe body 100 is the length direction of the outer pipe body 100, the extension direction of the first inner pipe body 200 is the axial direction of the first inner pipe body 200, the liquid inlet pipe section 220 of the first inner pipe body 200 can be coaxially connected with the first inner pipe body 200, the axial direction of the outer pipe body 100 extends along the vertical direction, that is, the outer pipe body 100 is vertically arranged, the first inner pipe body 200 is inserted into the first cavity 110 from the lower end of the outer pipe body 100, and the liquid inlet pipe section 220 is located outside the outer pipe body 100 and connected with the lower end of the outer pipe body 100. As shown in Figure 4 、 Figure 5 、 Figure 6 and Figure 8 In other embodiments, the axial direction of the outer pipe body 100 can also extend along the horizontal direction, that is, the extension direction of the first inner pipe body 200 is also the horizontal direction, the liquid inlet pipe section 220 is communicated with the middle part of the first inner pipe body 200, and the liquid inlet pipe section 220 is perpendicular to the first inner pipe body 200.

[0042] The hole diameter and arrangement mode of the first spray hole 210 and the second spray hole 321 can be designed as follows:

[0043] (1) The distance between two adjacent first spray holes 210 gradually decreases along the flow direction of the refrigerant in the first inner pipe body 200, that is, a > b > c > d > …; the hole diameter of each first spray hole 210 is the same or gradually increases along the flow direction of the refrigerant in the first inner pipe body 200, that is, Ra < Rb < Rc < Rd < …, and the requirements of the second spray hole 321 can be the same as those of the first spray hole 210, so as to solve the problem of uneven separation when the header pipe is arranged along the vertical direction, and the liquid-phase refrigerant accumulates at the lower end of the outer pipe body 100, and the gas-phase refrigerant increases at the upper end.

[0044] (2) The first injection hole 210 has the same aperture as the second injection hole 321 or the aperture of the second injection hole 321 is larger than the aperture of the first injection hole 210, that is, R2>R1, so that the refrigerant amount of the third cavity 130 is controlled to be more than the refrigerant amount of the first cavity 110 through pressure loss.

[0045] According to one embodiment of the present application, the partition part 300 comprises the partition plate 310 and the second inner pipe body 320, the partition plate 310 is provided with the opening 311, the second inner pipe body 320 is provided with the second injection hole 321, the inlet of the second inner pipe body 320 is connected with the partition plate 310 and is closedly connected with the outer pipe body 100, the inner side of the second inner pipe body 320 is surrounded to form the second cavity 120, and the outer side of the second inner pipe body 320 and the partition plate 310 are surrounded with the outer pipe body 100 to form the third cavity 130.

[0046] In the embodiment, the partition part 300 is composed of the partition plate 310 and the second inner pipe body 320, the partition plate 310 divides the cavity in the outer pipe body 100 into two parts, and the two sides of the partition plate 310 are respectively the first cavity and the second cavity, the first cavity is the first cavity 110, the second inner pipe body 320 is arranged in the second cavity, the inlet of the second inner pipe body 320 is connected with the inner wall of the outer pipe body 100 corresponding to the second cavity and is connected with the side of the partition plate 310 facing the second cavity, that is, the inlet of the second inner pipe body 320 is closedly connected, and then the second cavity is divided into the inner side part and the outer side part of the second inner pipe body 320 through the second inner pipe body 320, the inner side part is the second cavity 120, and the outer side part is the third cavity 130, so that the first cavity 110 and the third cavity 130 are completely separated.

[0047] The opening 311 for connecting the first cavity 110 and the second cavity 120 is arranged on the partition plate 310, the pipe wall of the second inner pipe body 320 is provided with the second injection hole 321, and the refrigerant in the first cavity 110 can enter the third cavity 130 only after passing through the opening 311 and the second injection hole 321 in sequence, so that the refrigerant amount in the third cavity 130 is strictly controlled. The combination of the partition plate 310 and the second inner pipe body 320 has a simple structure and is more direct and effective in reconstructing and dividing the inside of the outer pipe body 100.

[0048] According to one embodiment of the present application, the partition part 300 further comprises the first connecting plate 330, and the inlet of the second inner pipe body 320 is connected with the outer pipe body 100 and the opening 311 through the first connecting plate 330. In the embodiment, the partition part 300 is composed of the partition plate 310, the second inner pipe body 320 and the first connecting plate 330, the first connecting plate 330 has a ring structure, the inner side edge of the first connecting plate 330 surrounds the inlet of the second inner pipe body 320 and is closed with the inlet of the second inner pipe body 320, a part of the outer side edge of the first connecting plate 330 is closedly connected with the inner wall of the outer pipe body 100, and another part is closedly connected with the side of the partition plate 310.

[0049] In this embodiment, the outer tube body 100 is cylindrical, the partition plate 310 is rectangular, and the first connecting plate 330 is semicircular, so the opening formed by the inner side edge of the first connecting plate 330 is small, and the pressure loss is relatively large, so that the amount of refrigerant flowing to the second inner tube body 320 is smaller than the amount of refrigerant flowing to the first inner tube body 200.

[0050] According to one embodiment of the present application, the partition plate 310 extends along the axial direction of the outer tube body 100, and the outer tube body 100 extends along the vertical direction, and the lower end of the partition plate 310 and the lower end of the outer tube body 100 enclose an opening 311, and the upper end of the partition plate 310 is closed and connected to the upper end of the outer tube body 100.

[0051] In this embodiment, the extension direction of the partition plate 310 is also the axial direction of the outer tube body 100, and the axial direction of the outer tube body 100 extends along the vertical direction, so the first inner tube body 200 and the second inner tube body 320 also extend along the vertical direction, and the upper end and the lower end of the partition plate 310 are the two ends of the partition plate 310 extending along the axial direction of the outer tube body 100, that is, the partition plate 310 divides the cavity inside the outer tube body 100 into a first chamber and a second chamber in a direction perpendicular to the axial direction of the outer tube body 100, so that the extension direction of the first cavity 110, the second cavity 120 and the third cavity 130 is also the axial direction of the outer tube body 100, forming a design that the first inner tube body 200 and the second inner tube body 320 are parallel to each other.

[0052] The lower end of the partition plate 310 and the lower end of the outer tube body 100 have a gap, and the gap forms the opening 311 of the partition plate 310, that is, the first cavity 110 and the second cavity 120 are communicated through the opening 311 located at the lower part of the cavity. In the heat exchanger, the liquid phase refrigerant is easy to accumulate at the bottom of the outer tube body 100, so the opening 311 leading to the second cavity 120 is opened at the lower part of the first cavity 110, and the refrigerant accumulated at the bottom of the first cavity 110 is guided into the second cavity 120, avoiding the uneven distribution of liquid caused by excessive liquid refrigerant in the lower part of the first cavity 110 along the vertical direction.

[0053] In this embodiment, when the axial direction of the outer tube body 100 extends along the vertical direction, the upper end of the first inner tube body 200 is closed and connected to the upper end of the outer tube body 100, at this time, the first cavity 110 and the inside of the first inner tube body 200 are only communicated through the first spray hole 210, and since the flow direction of the refrigerant in the first inner tube body 200 is from bottom to top, the first inner tube body 200 with the closed upper end can improve the internal pressure of the first inner tube body 200, and in turn improve the spray speed and intensity of the refrigerant sprayed from the first inner tube body 200 into the first cavity 110, which is beneficial to the uniform distribution and mixing of the refrigerant.

[0054] As Figure 7 and Figure 8As shown, according to an embodiment of the present invention, the outer tube 100 extends axially in the horizontal direction, one end of the partition 310 and one end of the outer tube 100 form an opening 311, and there is a gap between the other end of the partition 310 and the other end of the outer tube 100. The partition 300 also includes a second connecting plate 340, the partition 310 is connected to the outer tube 100 through the second connecting plate 340, the second connecting plate 340 is provided with a through hole 341, and the second inner tube 320 is disposed between the first connecting plate 330 and the second connecting plate 340.

[0055] In this embodiment, the outer tube 100 extends horizontally along its axial direction. Therefore, the first inner tube 200 and the second inner tube 320 also extend horizontally. The two ends of the partition 310 are the two ends of the partition 310 extending along the axial direction of the outer tube 100. The two ends of the first inner tube 200 are the two ends of the first inner tube 200 extending along the axial direction of the outer tube 100. The two ends of the second inner tube 320 are the two ends of the first inner tube 200 extending along the axial direction of the outer tube 100.

[0056] like Figure 8 As shown, there is a gap between the right end of the second inner tube 320 and the right end of the outer tube 100, and there is also a gap between the right end of the partition 310 and the right end of the outer tube 100. The right end outlet of the second inner tube 320 is not closed, and the right end outlet of the first inner tube 200 is also not closed. The left end of the partition 310 is connected to the first connecting plate 330, and the right end of the partition 310 is connected to the second connecting plate 340. The second connecting plate 340 is also an annular plate. A through hole 341 is formed on the inner edge of the second connecting plate 340. A part of the outer edge of the second connecting plate 340 is closed and connected to the inner wall of the outer tube 100, and the other part of the outer edge of the second connecting plate 340 is connected to the upper end of the partition 310.

[0057] When placed horizontally, the first chamber and the second chamber are connected at both ends. Both ends of the partition 310 are at a certain distance from the outer tube 100, connecting the lower part of the first chamber 110 to the second chamber 120, and the upper part of the first chamber to the third chamber. This increases the refrigerant circulation within the outer tube 100, prevents the accumulation of gaseous refrigerant in the upper part of the outer tube 100, and improves the uniformity of refrigerant distribution.

[0058] According to one embodiment of the utility model, the second inner tube body 320 extends along the axial direction of the outer tube body 100, the axial direction of the outer tube body 100 extends along the vertical direction, and the upper end of the second inner tube body 320 is closedly connected to the upper end of the outer tube body 100. In this embodiment, when the axial direction of the outer tube body 100 extends along the vertical direction, the upper end of the second inner tube body 320 is closedly connected to the upper end of the outer tube body 100. At this time, the second cavity 120 and the third cavity 130 are only communicated through the second spray hole 321. Since the flow direction of the refrigerant in the second inner tube body 320 is from bottom to top, the second cavity 120 with the closed upper end can improve the internal pressure of the second inner tube body 320, thereby improving the spray speed and force of the refrigerant sprayed from the second cavity 120 into the third cavity 130, and facilitating the uniform distribution and mixing of the refrigerant.

[0059] According to one embodiment of the utility model, the axial direction of the outer tube body 100 extends along the horizontal direction, and the end of the second inner tube body 320 away from the opening 311 has a gap with the tube end of the outer tube body 100 close to it. In this embodiment, when the axial direction of the outer tube body 100 extends along the horizontal direction, the left end of the second inner tube body 320 is open, and the right end of the second inner tube body 320 and the right end of the outer tube body 100 both have gaps. At this time, the first cavity 110 and the second cavity 120 are not only communicated through the opening 311, but also communicated through the gaps. The refrigerant in the first cavity 110 can flow through both ends of the axial direction of the second inner tube body 320. Since the refrigerant in the first inner tube body 200 flows horizontally, in order to avoid the refrigerant accumulation at the end of the outer tube body 100, ensure the flow speed of the refrigerant and the flow of the refrigerant in the second inner tube body 320, the structure form that the refrigerant can flow through is arranged at both ends of the second inner tube body 320.

[0060] According to one embodiment of the utility model, the liquid inlet of the first inner tube body 200 is located in the middle part of the first inner tube body 200, and the end of the second inner tube body 320 away from the opening 311 has a gap with the tube end of the outer tube body 100 close to it. In this embodiment, the liquid inlet pipe section 220 is communicated with the middle part of the first inner tube body 200, and the liquid inlet pipe section 220 is perpendicular to the first inner tube body 200. At this time, the refrigerant flows from the middle part to both ends of the first inner tube body 200 after passing through the liquid inlet pipe section 220, is sprayed into the first cavity 110 through the first spray hole 210, and then enters the second inner tube body 320 through the opening 311. One end of the second inner tube body 320 is communicated with the opening 311, and the other end forms a gap with the outer tube body 100. The third cavity 130 and the second cavity 120 are not only communicated through the second spray hole 321, but also communicated through the gap between the second inner tube body 320 and the outer tube body 100, thereby increasing the mixing effect of the third cavity 130 at the end position.

[0061] According to one embodiment of the utility model, the liquid inlet of the first inner tube body 200 is located in the middle of the first inner tube body 200, or the axial direction of the outer tube body 100 extends horizontally, one end of the first inner tube body 200 close to the opening 311 is closed connected with the tube end of the outer tube body 100 close to it, and there is a gap between the other end of the first inner tube body 200 far from the opening 311 and the tube end of the outer tube body 100 close to it.

[0062] In the embodiment, in the case that the liquid inlet of the first inner tube body 200 is located in the middle of the first inner tube body 200, or in the case that the axial direction of the outer tube body 100 extends horizontally, one end of the first inner tube body 200 at the position of the opening 311 is closed connected with the outer tube body 100, and the other end of the first inner tube body 200 has a gap with the outer tube body 100. Because in the two cases, the refrigerant in the first inner tube body 200 flows horizontally, the first inner tube body 200 not only communicates with the first cavity 110 through the first spray hole 210, but also communicates with the outer tube body 100 through the gap between the first inner tube body 200 and the outer tube body 100, thereby increasing the mixing effect of the end position of the first cavity 110.

[0063] The heat exchanger provided by the embodiment of the utility model, comprising heat exchange pipe 400 and the manifold of the above-mentioned embodiment, heat exchange pipe 400 is connected with outer tube body 100, and first passage 410 and second passage 420 are arranged inside heat exchange pipe 400, first passage 410 communicates with first cavity 110, and second passage 420 communicates with third cavity 130.

[0064] The heat exchanger of the embodiment of the utility model, the outer tube body 100, the partition 300 and the first inner tube body 200 jointly constitute the structure of the manifold, a plurality of heat exchange pipes 400 are connected on the outer tube body 100, the first passage 410 and the second passage 420 are respectively arranged inside the heat exchange pipe 400, the first passage 410 and the second passage 420 are independent of each other, the first passage 410 communicates with the first cavity 110, and the second passage 420 communicates with the third cavity 130, so that the connection and communication of the heat exchange pipe 400 and the manifold are realized.

[0065] The refrigerant flows through the first inner tube body 200, and the refrigerant in the first inner tube body 200 is sprayed into the first cavity 110 through the first spray hole 210, is uniformly dispersed in the first cavity 110 by reflection of the inner wall of the corresponding outer tube body 100 and the partition 300, and then a part of the refrigerant exchanges heat with the external heat exchange medium through the first channel 410 of each heat exchange tube 400, and another part of the refrigerant enters the second cavity 120 through the opening 311 of the partition 300, flows in the second cavity 120, is sprayed into the third cavity 130 through the second spray hole 321 of the partition 300, is uniformly dispersed in the third cavity 130 by reflection of the inner wall of the corresponding outer tube body 100 and the partition 300, and then exchanges heat with the external heat exchange medium through the second channel 420 of each heat exchange tube 400.

[0066] The refrigerant enters the header pipe through the first inner tube body 200, and is then separated twice by the first inner tube body 200 and the partition 300, respectively, and the first cavity 110 connected with the first channel 410 and the third cavity 130 connected with the second channel 420 are independent of each other, that is, the refrigerant entering the first channel 410 and the second channel 420 comes from two relatively independent cavities and does not interfere with each other, which is beneficial to forming completely different heat exchange effects in the first channel 410 and the second channel 420. Since the first cavity 110 and the second cavity 120 are connected through the opening 311 of the partition 300, the area of the opening 311 is much smaller than the cross-sectional area of the refrigerant flow in the first cavity 110 and the second cavity 120, the pressure loss is relatively large, the amount of refrigerant flowing to the second cavity 120 is smaller than the amount of refrigerant in the first cavity 110, and then the amount of refrigerant in the third cavity 130 is different from the amount of refrigerant in the first cavity 110, that is, the different heat exchange amounts of the first channel 410 and the second channel 420 are achieved, which can adapt to the different heat exchange requirements of the external heat exchange medium at the heat exchange tube 400, and the heat exchanger is more scientific and reasonable.

[0067] According to one embodiment of the present application, the first channel 410 and the second channel 420 are sequentially arranged along the wind direction blowing through the heat exchange tube 400. In this embodiment, the external heat exchange medium is air flow formed by air, the air blows through the heat exchange tube 400, heat exchange between the refrigerant in the first channel 410 and the second channel 420 of the heat exchange tube 400 and the air is realized, and the first channel 410 and the second channel 420 are sequentially arranged along the wind direction blowing through the heat exchange tube 400, that is, the first channel 410 and the first cavity 110 are located on the windward side of the heat exchanger, and the second channel 420, the second cavity 120 and the third cavity 130 are located on the leeward side of the heat exchanger.

[0068] In the embodiment, the first cavity 110 and the third cavity 130 are independent of each other, and the first channel 410 and the second channel 420 are arranged independently of each other, so that the heat exchange difference between the windward side and the leeward side can be fully utilized. Taking the evaporator as an example, the heat exchange temperature difference of the windward side is large, and more refrigerant is needed; the heat exchange temperature difference of the leeward side is small, and less refrigerant is needed, so that the amount of refrigerant entering the windward side is more than the amount of refrigerant entering the leeward side. The heat exchange tube 400 can adopt a micro-channel flat tube.

[0069] As shown in Figure 7 and Figure 9 According to one embodiment of the present application, the flow direction of the refrigerant in at least one of the first spray hole 210 and the second spray hole 321 is opposite to the flow direction of the refrigerant at the inlet of the heat exchange tube 400. In the embodiment, at least one of the first spray hole 210 and the second spray hole 321 is opposite to one side of the heat exchange tube 400. A plurality of heat exchange tubes 400 are arranged in sequence along the axial direction of the outer tube body 100 and are concentrated on one side of the outer tube body 100, a plurality of first spray holes 210 are also arranged in sequence along the axial direction of the first inner tube body 200 and are concentrated on one side of the first inner tube body 200, or a plurality of second spray holes 321 are also arranged in sequence along the axial direction of the second inner tube body 320 and are concentrated on one side of the second inner tube body 320, and the side of the second inner tube body 320 where the second spray hole 321 is located is opposite to the side of the second inner tube body 320 where the tube opening of the heat exchange tube 400 faces, that is, the direction of the refrigerant sprayed out of the second spray hole 321 is opposite to the flow direction of the refrigerant flowing into the heat exchange tube 400 from the tube opening of the heat exchange tube 400.

[0070] The refrigerant is sprayed into the space on one side of the cavity, and then the refrigerant in the cavity enters the heat exchange tube 400 from the space on the other side of the cavity, thereby increasing the residence and mixing time of the refrigerant in the cavity, increasing the flow path length of the refrigerant in the cavity, and increasing the reflection times and paths of the refrigerant between the inner walls of the outer tube body 100, thereby further improving the distribution effect.

[0071] The air conditioner provided by the present application will be described below, and the air conditioner described below can be correspondingly referred to the heat exchanger described above.

[0072] The embodiment of the present application further provides an air conditioner comprising the heat exchanger of the above-described embodiment.

[0073] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A header characterized by, The application relates to a pipe body, which comprises an outer pipe body (100), a first inner pipe body (200) and a partition (300), the partition (300) is arranged inside the outer pipe body (100) to divide the inner part of the outer pipe body (100) into a first cavity (110), a second cavity (120) and a third cavity (130), the first inner pipe body (200) is inserted into the first cavity (110), the first inner pipe body (200) is provided with a first spray hole (210), the first spray hole (210) is communicated with the first cavity (110), the partition (300) is provided with a second spray hole (321) and an opening (311), the first cavity (110) is communicated with the second cavity (120) through the opening (311), and the second cavity (120) is communicated with the third cavity (130) through the second spray hole (321).

2. The collector according to claim 1, characterized in that The partition (300) comprises a partition plate (310) and a second inner pipe body (320), the partition plate (310) is provided with the opening (311), the second inner pipe body (320) is provided with the second spray hole (321), the inlet of the second inner pipe body (320) is connected with the partition plate (310) and is closedly connected with the outer pipe body (100), the inner side of the second inner pipe body (320) is surrounded to form the second cavity (120), and the outer side of the second inner pipe body (320) and the partition plate (310) are surrounded with the outer pipe body (100) to form the third cavity (130).

3. The collector according to claim 2, characterized in that The partition (300) further comprises a first connecting plate (330), the inlet of the second inner pipe body (320) is connected with the outer pipe body (100) and the opening (311) through the first connecting plate (330).

4. The collector according to claim 3, characterized in that The partition plate (310) extends along the axial direction of the outer pipe body (100), the outer pipe body (100) extends along the vertical direction, the lower end of the partition plate (310) and the lower end of the outer pipe body (100) surround the opening (311), the upper end of the partition plate (310) is closedly connected with the upper end of the outer pipe body (100), or the axial direction of the outer pipe body (100) extends along the horizontal direction, one end of the partition plate (310) and one end of the outer pipe body (100) surround the opening (311), and the other end of the partition plate (310) has a gap with the other end of the outer pipe body (100), the partition (300) further comprises a second connecting plate (340), the partition plate (310) is connected with the outer pipe body (100) through the second connecting plate (340), the second connecting plate (340) is provided with a through hole (341), and the second inner pipe body (320) is arranged between the first connecting plate (330) and the second connecting plate (340).

5. The collector as claimed in claim 2, wherein The second inner tube body (320) extends along the axial direction of the outer tube body (100), the axial direction of the outer tube body (100) extends in the vertical direction, and the upper end of the second inner tube body (320) is in closed connection with the upper end of the outer tube body (100), or the axial direction of the outer tube body (100) extends in the horizontal direction, and there is a gap between the end of the second inner tube body (320) away from the opening (311) and the tube end of the outer tube body (100) close to the opening (311).

6. The collector as claimed in claim 2, wherein The liquid inlet of the first inner tube body (200) is located in the middle of the first inner tube body (200), and there is a gap between the end of the second inner tube body (320) away from the opening (311) and the tube end of the outer tube body (100) close to the opening (311).

7. The collector according to any one of claims 1 to 6, characterized in that The liquid inlet of the first inner tube body (200) is located in the middle of the first inner tube body (200), or the axial direction of the outer tube body (100) extends in the horizontal direction, the end of the first inner tube body (200) close to the opening (311) is in closed connection with the tube end of the outer tube body (100) close to the opening (311), and there is a gap between the end of the first inner tube body (200) away from the opening (311) and the tube end of the outer tube body (100) close to the opening (311).

8. A heat exchanger, characterized by The heat exchanger comprises the heat exchange pipe (400) and the manifold according to any one of claims 1 to 7, the heat exchange pipe (400) is connected with the outer tube body (100), the heat exchange pipe (400) is internally provided with a first channel (410) and a second channel (420), the first channel (410) is in communication with the first cavity (110), and the second channel (420) is in communication with the third cavity (130).

9. The heat exchanger of claim 8, wherein, The first channel (410) and the second channel (420) are sequentially arranged along the air direction blowing through the heat exchange pipe (400); and the flow direction of at least one of the first jet hole (210) and the second jet hole (321) is opposite to the flow direction of the refrigerant at the inlet of the heat exchange pipe (400).

10. An air conditioner characterized by comprising: The heat exchanger according to claim 8 or 9.

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