Mixer and heat exchanger devices

Abstract

The present application relates to a flow mixer and a heat exchanger device, wherein the flow mixer includes a liquid inlet pipe, a shell, a flow mixing portion, and a liquid outlet portion. The liquid inlet pipe is provided with a liquid inlet and a liquid outlet. The shell is connected to the liquid inlet pipe and is located at one end of the liquid outlet of the liquid inlet pipe. The flow mixing portion is arranged in the shell, the flow mixing portion and the liquid outlet are spaced apart to form a first cavity, and the flow mixing portion is also provided with a flow channel. The liquid outlet portion is located in the shell, the liquid outlet portion and the flow mixing portion are spaced apart to form a second cavity, the second cavity is connected to the first cavity through the flow channel, and the liquid outlet portion is also provided with a liquid outlet hole. A gas-liquid two-phase fluid flows into the shell through the liquid inlet pipe, collides with the flow mixing portion and mixes in the first cavity, then flows into the flow channel, flows through the flow channel to the liquid outlet portion, collides again in the liquid outlet portion and mixes in the second cavity, and finally flows into the heat exchanger, thereby avoiding the "evaporation dryness" phenomenon of the heat exchanger, avoiding the channel blockage problem, and reducing the possibility of heat transfer deterioration.

Description

Technical Field

[0001] The present application relates to the field of heat exchange technology, and in particular to a flow mixer and a heat exchanger device. Background Art

[0002] After the gas-liquid two-phase fluid enters the inlet header of the plate heat exchanger, it enters different parallel flow channels through the various distribution holes on the header for heat exchange. Since the two-phase fluid undergoes gas-liquid separation during the flow process, and the flow channels of the plate heat exchanger are parallel flow channels with a front-to-back relationship, the gas-liquid separation will cause most of the liquid to flow into the flow channel close to the inlet, while the flow channels far from the inlet have less liquid. This makes the gas-liquid two-phase fluid distributed to each flow channel seriously uneven. The flow channels with less liquid experience the phenomenon of refrigerant "evaporation dryness", and the heat transfer deteriorates sharply. The flow channels with too much liquid will clog the channels after the liquid evaporates, which also causes the heat transfer to deteriorate. The above problems significantly reduce the overall performance of the heat exchanger. Summary of the Invention

[0003] The purpose of the present application is to provide a flow mixer and a heat exchanger device, which can improve the uniformity of mixing of gas-liquid two-phase fluids, thereby avoiding the phenomenon of gas-liquid unevenness in the gas-liquid two-phase fluids in the plate heat exchanger.

[0004] To this end, in a first aspect, an embodiment of the present application provides a flow mixer, comprising: a liquid inlet pipe, provided with a liquid inlet and a liquid outlet; a shell, connected to the liquid inlet pipe and located at one end of the liquid outlet of the liquid inlet pipe; a mixing portion, arranged in the shell, the mixing portion and the liquid outlet are spaced apart to form a first cavity, and the mixing portion is also provided with a flow channel; and a liquid outlet portion, located in the shell, the liquid outlet portion and the mixing portion are spaced apart to form a second cavity, the second cavity is connected to the first cavity through the flow channel, and the liquid outlet portion is also provided with a liquid outlet hole.

[0005] In one possible implementation, the side of the mixing portion facing the liquid inlet pipe includes a collision area and a flow channel area, the collision area corresponds to the liquid outlet of the liquid inlet pipe, the flow channel area is located on the periphery of the collision area, and the flow channel area is provided with a liquid inlet hole connected to the flow channel.

[0006] In a possible implementation, a plurality of the liquid inlet holes are provided, and the plurality of liquid inlet holes are distributed in the flow channel area in a ring-shaped manner with the center of the impact area as the center.

[0007] In one possible implementation, a plurality of flow channels are provided, and the plurality of flow channels are arranged in a plurality of ring shapes with the center of the impact zone as the center of the circle; a plurality of liquid inlet holes that are at equal distances from the center of the impact zone are grouped together, a group of the liquid inlet holes is connected to one flow channel, and the sum of the areas of the liquid inlet holes in each group corresponding to each flow channel is equal.

[0008] In a possible implementation, the flow channel is arranged to be gradually tapered along a direction from the flow mixing portion to the liquid outlet portion.

[0009] In a possible implementation, a cross-sectional area of ​​the flow channel gradually decreases along a direction from the flow mixing portion to the liquid outlet portion.

[0010] In a possible implementation manner, a cross-sectional area of ​​the first cavity is greater than a cross-sectional area of ​​the second cavity.

[0011] In a possible implementation, the height of the first cavity is 10 mm-20 mm; and / or the height of the second cavity is 5 mm-15 mm.

[0012] In a possible implementation, a plurality of the liquid outlet holes are provided, and the plurality of liquid outlet holes are distributed in a ring shape with the center of the liquid outlet portion as the center.

[0013] In a second aspect, an embodiment of the present application provides a heat exchanger device, comprising a heat exchanger and any one of the flow mixers described above, wherein the liquid outlet of the flow mixer is connected to the inlet of the heat exchanger.

[0014] According to the flow mixer and heat exchanger device provided in the embodiments of the present application, the flow mixer includes a liquid inlet pipe, a shell, a mixing part and a liquid outlet part, the liquid inlet pipe is provided with a liquid inlet and a liquid outlet; the shell is connected to the liquid inlet pipe and is located at one end of the liquid outlet of the liquid inlet pipe; the mixing part is arranged in the shell, the mixing part and the liquid outlet are spaced apart to form a first cavity, and the mixing part is also provided with a flow channel; the liquid outlet part is located in the shell, the liquid outlet part and the mixing part are spaced apart to form a second cavity, the second cavity is connected to the first cavity through the flow channel, and the liquid outlet part is also provided with a liquid outlet hole. The heat exchanger is connected to the liquid outlet, and the gas-liquid two-phase fluid flows into the shell through the liquid inlet pipe. The gas-liquid two-phase fluid collides at the mixing part and is preliminarily mixed in the first cavity. The gas-liquid two-phase fluid after preliminarily mixing flows into the flow channel, and then flows to the liquid outlet through the flow channel. The gas-liquid two-phase fluid collides for the second time in the liquid outlet and is mixed in the second cavity, and then flows into the heat exchanger inlet from the liquid outlet hole. The mixed gas-liquid two-phase fluid flows in the channel of the heat exchanger, thereby avoiding the "evaporation" phenomenon of the heat exchanger, avoiding the channel blockage problem, and reducing the possibility of heat transfer deterioration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In addition, in the drawings, the same reference numerals are used for the same components, and the drawings are not drawn according to the actual scale.

[0016] Figure 1 A schematic structural diagram of a flow mixer provided in an embodiment of the present application is shown;

[0017] Figure 2 Show Figure 1 A cross-sectional view of the mixer shown along direction AA;

[0018] Figure 3 Show Figure 1 A cross-sectional view of the mixer shown along direction BB;

[0019] Figure 4 Show Figure 1 A cross-sectional view of the mixer shown along direction CC;

[0020] Figure 5 A bottom view of a flow mixer provided in an embodiment of the present application is shown;

[0021] Figure 6 A top view of a flow mixer provided in an embodiment of the present application is shown.

[0022] Description of reference numerals:

[0023] 1. Liquid inlet pipe; 11. Liquid inlet; 12. Liquid outlet; 2. Shell; 3. Mixing section; 31. Flow channel; 311. Liquid inlet hole; 321. Impact zone; 322. Flow channel zone; 4. Liquid outlet; 41. Liquid outlet hole; 5. First cavity; 6. Second cavity. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] Figure 1 A schematic structural diagram of a flow mixer provided in an embodiment of the present application is shown. Figure 2 Show Figure 1The cross-section of the mixer is shown along direction AA.

[0026] like Figures 1 to 2 As shown, an embodiment of the present application provides a flow mixer, comprising a liquid inlet pipe 1, a shell 2, a flow mixing portion 3 and a liquid outlet portion 4, the liquid inlet pipe 1 is provided with a liquid inlet 11 and a liquid outlet 12; the shell 2 is connected to the liquid inlet pipe 1 and is located at one end of the liquid outlet 12 of the liquid inlet pipe 1; the flow mixing portion 3 is arranged in the shell 2, the flow mixing portion 3 and the liquid outlet 12 are spaced apart to form a first cavity 5, and the flow mixing portion 3 is also provided with a flow channel 31; the liquid outlet portion 4 is located in the shell 2, the liquid outlet portion 4 and the flow mixing portion 3 are spaced apart to form a second cavity 6, the second cavity 6 is connected to the first cavity 5 through the flow channel 31, and the liquid outlet portion 4 is also provided with a liquid outlet hole 41.

[0027] It should be understood that the flow mixer includes a liquid inlet pipe 1, which is provided with an inner cavity. The liquid inlet pipe 1 can be a square tube, a round tube or any other shape. The present application does not limit the shape of the liquid inlet pipe 1. The liquid inlet pipe 1 has a liquid inlet 11 and a liquid outlet 12. The liquid inlet 11 and the liquid outlet 12 are respectively located at the two ends of the liquid inlet pipe 1. The liquid inlet pipe 1 can be a straight pipe or a curved pipe, and is configured according to specific needs. The liquid inlet 11 is used to connect with other equipment to facilitate the inflow of gas-liquid two-phase fluid. The liquid outlet 12 is connected to the inner cavity of the shell 2 to facilitate the flow of gas-liquid two-phase fluid from the liquid inlet pipe 1 into the inner cavity of the shell 2.

[0028] The flow mixer includes a housing 2, which is connected to the liquid inlet pipe 1 and located at the end of the liquid inlet pipe 1 where the liquid outlet 12 is located. The housing 2 and the liquid inlet pipe 1 can be connected by welding or integral molding. The housing 2 has an inner cavity that communicates with the inner cavity of the liquid inlet pipe 1, allowing the gas-liquid two-phase fluid to flow from the inner cavity of the liquid inlet pipe 1 into the inner cavity of the housing 2.

[0029] The mixer includes a mixing section 3, which is located in the inner cavity of the shell 2 and is connected to the shell 2. The connection can be achieved by welding or integral molding. The mixing section 3 is located on one side of the liquid outlet 12 of the liquid inlet pipe 1, and the gas-liquid two-phase fluid flowing in from the liquid inlet pipe 1 flows toward the mixing section 3. The mixing section 3 and the liquid outlet 12 are spaced apart along the height direction of the mixing section 3. The mixing section 3 is located below the liquid outlet 12. The interval between the mixing section 3 and the liquid inlet pipe 1 is a first cavity 5. When the gas-liquid two-phase fluid flows in from the liquid inlet pipe 1, the liquid flows toward the mixing section 3 and collides with the mixing section 3, causing the liquid to flow radially to the surroundings, that is, the liquid is dispersed in the first cavity 5, and preliminary mixing of the gas-liquid two-phase fluid is performed. The gas-liquid two-phase fluid has a speed when entering the liquid inlet pipe 1, thereby improving the collision effect between the liquid and the mixing section 3, and further improving the preliminary mixing effect of the gas-liquid two-phase fluid.

[0030] Furthermore, the mixing portion 3 is further provided with a flow channel 31 , which runs through the mixing portion 3 , that is, the flow channel 31 is connected to the first cavity 5 , and the gas-liquid two-phase fluid after preliminary mixing can flow from the first cavity 5 toward the flow channel 31 .

[0031] The shell 2 is also connected to a liquid outlet 4, which is arranged in a plate shape and is located inside the shell 2. The connection between the liquid outlet 4 and the shell 2 can be welding or one-piece molding. The liquid outlet 4 is located at the end of the mixing section 3 away from the liquid inlet pipe 1. The liquid outlet 4 and the mixing section 3 are spaced apart along the height direction of the mixing section 3. The liquid outlet 4 is located below the mixing section 3. The interval between the liquid outlet 4 and the mixing section 3 forms a second cavity 6, and the second cavity 6 is connected to the flow channel 31, so that the first cavity 5 and the second cavity 6 are connected through the flow channel 31, that is, the gas-liquid two-phase fluid that is preliminarily mixed in the first cavity 5 flows into the second cavity 6 through the flow channel 31, and the preliminarily mixed gas-liquid two-phase fluid can collide with the liquid outlet 4 again, thereby performing secondary mixing, further improving the mixing effect between the gas-liquid two-phase fluid. The liquid outlet portion 4 is further provided with a liquid outlet hole 41 , which is used to communicate with the inlet of the plate heat exchanger, so that the gas-liquid two-phase fluid mixed in the second cavity 6 flows into the inlet of the plate heat exchanger.

[0032] The gas-liquid two-phase fluid flows into the inner cavity of the shell 2 through the liquid inlet pipe 1. The gas-liquid two-phase fluid entering the shell 2 collides at the mixing section 3 for preliminary mixing. The preliminarily mixed gas-liquid two-phase fluid moves radially in the first cavity 5. The preliminarily mixed gas-liquid two-phase fluid flows into the flow channel 31, and then flows to the liquid outlet 4 through the flow channel 31. The preliminarily mixed gas-liquid two-phase fluid collides a second time in the liquid outlet 4 and mixes in the second cavity 6, and finally flows out of the plate heat exchanger inlet from the liquid outlet hole 41. The mixed gas-liquid two-phase fluid flows in the channels of the plate heat exchanger, and there is no uneven amount of gas-liquid two-phase fluid in each channel of the plate heat exchanger, thereby avoiding the phenomenon of "evaporation" of the refrigerant, avoiding the problem of channel blockage, and reducing the possibility of deterioration of heat transfer.

[0033] Reference Figure 2-Figure 5 , Figure 3 Show Figure 1 The cross-sectional view of the mixer along direction BB is shown. Figure 4 Show Figure 1 The cross-sectional view of the mixer along the direction CC is shown, Figure 5 A bottom view of a flow mixer provided in an embodiment of the present application is shown. In some optional embodiments, the side of the flow mixing portion 3 facing the liquid inlet pipe 1 includes an impact zone 321 and a flow channel zone 322. The impact zone 321 corresponds to the liquid outlet 12 of the liquid inlet pipe 1, and the flow channel zone 322 is located around the impact zone 321. The flow channel zone 322 is provided with a liquid inlet hole 311 that communicates with the flow channel 31.

[0034] The side of the mixing portion 3 facing the liquid inlet pipe 1 includes a collision area 321 and a flow channel area 322, wherein the collision area 321 is conformally arranged to the liquid outlet 12 of the liquid inlet pipe 1. For example, when the liquid outlet 12 is circular, the collision area 321 is circular; the liquid outlet 12 is square, and the collision area 321 is square. In one example, the liquid outlet 12 is circular, the collision area 321 is circular, and the collision area 321 is corresponding to the liquid inlet pipe 1. The collision area 321 is located directly below the liquid inlet pipe 1, and the area of ​​the collision area 321 is not less than the area of ​​the liquid outlet 12, so that the liquid flowing out of the liquid outlet 12 can accurately collide with the collision area 321, thereby improving the mixing effect of the gas-liquid two-phase fluid.

[0035] The flow channel area 322 is located on the peripheral side of the impact area 321, and the flow channel area 322 is provided with a liquid inlet hole 311 connected to the flow channel 31, wherein the shape of the liquid inlet hole 311 can be circular, diamond-shaped or other shapes. This application does not limit the shape of the liquid inlet hole 311.

[0036] In some optional embodiments, a plurality of liquid inlet holes 311 are provided, and the plurality of liquid inlet holes 311 are distributed in a plurality of annular intervals in the flow channel area 322 with the center of the impact area 321 as the center. After impacting the impact area 321, the liquid moves radially toward the surrounding liquid inlet holes 311. The plurality of liquid inlet holes 311 are arranged in an annular shape and distributed in the flow channel area 322, so that the gas-liquid two-phase fluid mixed in the first cavity 5 immediately flows into the flow channel 31 through the liquid inlet holes 311, reducing the probability of gas-liquid two-phase fluid separation.

[0037] In some optional embodiments, multiple flow channels 31 are provided, and the multiple flow channels 31 are arranged in multiple rings with the center of the impact area 321 as the center of the circle; multiple liquid inlet holes 311 that are at equal distances from the center of the impact area 321 are grouped together, and a group of liquid inlet holes 311 is connected to one flow channel 31, and the sum of the areas of each group of liquid inlet holes 311 corresponding to each flow channel 31 is equal.

[0038] Multiple flow channels 31 are provided. These flow channels 31 are arranged within the flow channel region 322 and circumferentially around the impact region 321. The impact region 321 is arranged in a circular shape. The multiple flow channels 31 are spaced radially apart from the impact region 321, resulting in different distances between each flow channel 31 and the impact region 321. In other words, the flow cross-section of the flow channel 31 near the center is smaller, while the flow cross-section of the flow channel 31 near the outer edge is larger. Each flow channel 31 corresponds to a group of liquid inlet holes 311. Multiple liquid inlet holes 311 at equal distances from the center of the impact region 321 form a group. This ensures that the gas-liquid two-phase fluid entering the same flow channel 31 is spaced at equal distances from the impact region 321 and has the same velocity. The sum of the areas of the groups of liquid inlet holes 311 corresponding to each flow channel 31 is equal, resulting in an equal flow rate in each flow channel 31. Because each flow channel 31 is located at a different distance from the collision zone 321, i.e., the gas-liquid flow velocities in different flow channels 31 differ, the flow velocity of the gas-liquid fluid in the flow channel 31 gradually decreases as the distance from the collision zone 321 increases. Gas-liquid two-phase fluids of different flow rates collide with the liquid outlet 4 in the second cavity 6, and the gas-liquid two-phase fluids in different flow channels 31 also collide with each other, further enhancing the mixing effect of the gas-liquid two-phase fluids.

[0039] In some optional embodiments, the flow channels 31 are arranged to taper from the mixing section 3 to the liquid outlet 4. That is, the multiple flow channels 31 are arranged at an angle, the cross-sectional area of ​​the mixing section 3 is circular, and the lower ends of the multiple flow channels 31 are inclined toward the central axis of the mixing section 3. That is, the multiple flow channels 31 are gathered at the bottom end of the mixing section 3, thereby improving the effect of the gas-liquid two-phase fluids in the multiple flow channels 31 colliding in the second cavity 6 and improving the mixing effect of the gas-liquid two-phase fluids. As the flow channels 31 are arranged at an angle, the cross-sectional area of ​​the mixing section 3 gradually decreases in the direction away from the liquid inlet pipe 1, and accordingly, the cross-sectional area of ​​the mixing section 3 gradually decreases in the direction away from the liquid inlet pipe 1.

[0040] In some optional embodiments, the cross-sectional area of ​​the flow channel 31 gradually decreases in the direction from the mixing section 3 to the liquid outlet section 4. As a result, the flow velocity of the gas-liquid two-phase fluid in the flow channel 31 gradually increases, so that the flow of the gas-liquid two-phase fluid flowing out of the flow channel 31 is in the form of a mist flow, which improves the mixing effect of the gas-liquid two-phase fluid. The increase in the velocity of the gas-liquid two-phase fluid improves the collision effect between the gas-liquid two-phase fluid in multiple flow channels 31 and the liquid outlet section 4, and also improves the effect of the collision between the gas-liquid two-phase fluid in multiple flow channels 31, further improving the mixing effect of the gas-liquid two-phase fluid. The flow channel 31 is inclined, which not only increases the length of the flow channel 31 compared to the vertical setting of the flow channel 31, but also further improves the flow velocity of the gas-liquid two-phase fluid in the flow channel 31. Among them, the inclination angle of the flow channel 31 is set as required, and the height of the mixing section 3 is also set as required.

[0041] Reference Figures 1-6 , Figure 6A top view of a flow mixer provided in an embodiment of the present application is shown. In some optional embodiments, the cross-sectional area of ​​the first cavity 5 is greater than the cross-sectional area of ​​the second cavity 6. That is, the space in the second cavity 6 is smaller than the space in the first cavity 5. The gas-liquid two-phase fluids in the multiple flow channels 31 converge in the second cavity 6, so that the number of mutual collisions between the gas-liquid two-phase fluids in the second cavity 6 is greater than the number of collisions in the first cavity 5. That is, the mixing effect of the gas-liquid two-phase fluids in the multiple flow channels 31 in the second cavity 6 is greater than the mixing effect in the first cavity 5, resulting in a better mixing effect of the gas-liquid two-phase fluids.

[0042] In some optional embodiments, the ratio of the area of ​​the cross section of the first cavity 5 to the area of ​​the cross section of the second cavity 6 is 1.5:1-3:1. When the ratio of the area of ​​the cross section of the first cavity 5 to the area of ​​the cross section of the second cavity 6 is less than 1.5:1, the mixing effect of the gas-liquid two-phase fluid in the second cavity 6 is increased, but the increase effect is not significant, resulting in poor mixing effect of the gas-liquid two-phase fluid in the second cavity 6; when the ratio of the area of ​​the cross section of the first cavity 5 to the area of ​​the cross section of the second cavity 6 is greater than 3:1, the pressure drop of the gas-liquid two-phase fluid in the second cavity 6 increases, but the mixing effect is not further enhanced. When the ratio of the area of ​​the cross section of the first cavity 5 to the area of ​​the cross section of the second cavity 6 is 1.5:1-3:1, the mixing effect of the gas-liquid two-phase fluid in the second cavity 6 is significantly increased, and the pressure drop is small.

[0043] In some optional embodiments, the height of the first cavity 5 is 10 mm to 20 mm. When the height of the first cavity 5 is less than 10 mm, backflow may occur after the gas-liquid two-phase fluid collides with the mixing portion 3. When the height of the first cavity 5 is greater than 20 mm, the mixing effect of the gas-liquid two-phase fluid is poor.

[0044] In some optional embodiments, the height of the second cavity 6 is 5 mm to 15 mm. When the height of the second cavity 6 is less than 5 mm, backflow may occur after the gas-liquid two-phase fluid hits the liquid outlet 4. When the height of the second cavity 6 is greater than 15 mm, the mixing effect of the gas-liquid two-phase fluid is poor.

[0045] In some optional embodiments, a plurality of liquid outlet holes 41 are provided, and the plurality of liquid outlet holes 41 are distributed in a plurality of annular intervals around the center of the liquid outlet portion 4. The liquid outlet portion 4 is provided in a circular plate shape, and a plurality of liquid outlet holes 41 are provided and distributed in a plurality of annular intervals in the liquid outlet portion 4 to facilitate the outflow of the two-phase fluid after secondary mixing. The shape of the liquid outlet holes 41 can be circular, diamond-shaped, or any other shape, and this application does not limit the shape of the liquid outlet holes 41.

[0046] In some optional embodiments, a heat exchanger device includes a heat exchanger and any one of the flow mixers described above, wherein the liquid outlet 4 of the flow mixer is in communication with the inlet of the heat exchanger, wherein the heat exchanger is a plate heat exchanger.

[0047] The gas-liquid two-phase fluid flows into the inner cavity of the shell 2 through the liquid inlet pipe 1 of the mixer, and the gas-liquid two-phase fluid entering the shell 2 collides at the mixing part 3 for preliminary mixing. The gas-liquid two-phase fluid after preliminary mixing moves radially around in the first cavity 5, and then flows into the flow channel 31, and then flows to the liquid outlet part 4 through the flow channel 31. The gas-liquid two-phase fluid that has undergone preliminary mixing collides for the second time in the liquid outlet part 4 and is mixed in the second cavity 6, and finally flows out of the inlet of the plate heat exchanger from the liquid outlet hole 41. The mixed gas-liquid two-phase fluid flows in the channel of the plate heat exchanger, and there will be no uneven amount of gas-liquid two-phase fluid in each channel of the plate heat exchanger, thereby avoiding the "evaporation" phenomenon of the refrigerant, avoiding the channel blockage problem, and reducing the possibility of deterioration of heat transfer.

[0048] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0049] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0050] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A flow mixer, characterized in that: include: A liquid inlet pipe, provided with a liquid inlet and a liquid outlet; a housing connected to the liquid inlet pipe and located at one end of the liquid outlet of the liquid inlet pipe; a mixing portion disposed in the housing, the mixing portion and the liquid outlet being spaced apart to form a first cavity, the mixing portion further being provided with a flow channel; and a liquid outlet portion located in the housing, the liquid outlet portion and the flow mixing portion being spaced apart to form a second cavity, the second cavity being connected to the first cavity through the flow channel, and the liquid outlet portion being further provided with a liquid outlet hole; The side of the mixing portion facing the liquid inlet pipe includes a collision area and a flow channel area, the collision area corresponds to the liquid outlet of the liquid inlet pipe, the flow channel area is located around the collision area, and the flow channel area is provided with a liquid inlet hole connected to the flow channel; The liquid inlet holes are provided in plurality, and the plurality of liquid inlet holes are distributed in the flow channel area in a plurality of annular shapes with the center of the impact area as the center of the circle; The flow channel is arranged to gradually contract along a direction from the flow mixing portion to the liquid outlet portion.

2. The flow mixer according to claim 1, characterized in that There are multiple flow channels, and the multiple flow channels are arranged in multiple rings with the center of the impact area as the center of the circle; multiple liquid inlet holes that are at equal distances from the center of the impact area are grouped together, and a group of liquid inlet holes is connected to one flow channel, and the sum of the areas of the liquid inlet holes in each group corresponding to each flow channel is equal.

3. The flow mixer according to claim 1, wherein The cross-sectional area of ​​the flow channel gradually decreases along a direction from the flow mixing portion to the liquid outlet portion.

4. The flow mixer according to claim 1, wherein A cross-sectional area of ​​the first cavity is greater than a cross-sectional area of ​​the second cavity.

5. The flow mixer according to claim 1, characterized in that The height of the first cavity is 10 mm to 20 mm; and / or the height of the second cavity is 5 mm to 15 mm.

6. The flow mixer according to claim 1, characterized in that There are a plurality of liquid outlet holes, and the plurality of liquid outlet holes are distributed in a ring shape with the center of the liquid outlet portion as the center.

7. A heat exchanger device, characterized in that: It comprises a heat exchanger and the flow mixer according to any one of claims 1 to 6, wherein the liquid outlet of the flow mixer is connected to the inlet of the heat exchanger.

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