Integrated micro-channel structure and water heater

Abstract

The invention relates to an integrated micro-channel structure and a water heater, and belongs to the technical field of air energy water heaters. The micro-channel heat exchanger comprises a micro-channel pipeline, a flow collecting pipeline, a refrigerant pipeline and a refrigerant support. The multiple micro-channel pipelines are sequentially arranged on the water tank in a surrounding mode at intervals and attached to the water tank, the micro-channel pipelines communicate with the flow collecting pipeline, the refrigerant support is arranged on the flow collecting pipeline, and the refrigerant pipeline is arranged on the refrigerant support and communicates with the flow collecting pipeline. The refrigerant pipeline is fixed to the flow collecting pipeline through the refrigerant support, the integrated design of the micro-channel pipeline, the flow collecting pipeline, the refrigerant pipeline and the refrigerant support is achieved, the problems of insufficient welding, partial welding and the like of welding spots between the flow collecting pipeline and the micro-channel pipeline can be avoided, the refrigerant pipeline is fixed to the middle of the micro-channel pipeline, and the welding quality of the micro-channel pipeline is improved. Installation and assembly during product production are facilitated, and the production efficiency is improved.

Description

Technical Field

[0001] This application belongs to the technical field of air - energy water heaters, and particularly relates to an integrated micro - channel structure and a water heater. Background Art

[0002] An air - energy water heater, also known as an "air - source heat pump water heater", has a working principle very similar to that of an air conditioner. By using a small amount of electrical energy to drive a compressor to operate, a high - pressure liquid refrigerant medium evaporates into a gas in an evaporator after passing through an expansion valve and absorbs a large amount of heat energy from the air; the gaseous refrigerant medium is compressed by the compressor into a high - temperature and high - pressure liquid, and then enters a condenser to release heat and heat the water. Through continuous cyclic heating in this way, the water can be heated to 50°C - 65°C.

[0003] Existing air - energy water heaters include a heat pump system and a micro - channel heat exchanger. The heat pump system transports a high - temperature refrigerant medium to the micro - channel heat exchanger through the reverse Carnot cycle principle. Among them, the heat pump system is usually installed outdoors and consists of a compressor, an evaporator, and a throttling device. The micro - channel heat exchanger consists of a manifold pipe and micro - channel pipes. The heat pump system is welded and connected to the manifold pipe in the micro - channel heat exchanger through a refrigerant pipe. The manifold pipe sends the high - temperature refrigerant medium into the micro - channel pipes, and the micro - channel pipes are wrapped outside the water tank, thereby exchanging heat with the water in the water tank to achieve the purpose of heating the water.

[0004] Since the manifold pipe and the refrigerant pipe are separately arranged and need to be welded outside the micro - channel heat exchanger, problems such as missed welding and offset welding may occur during the welding process. Summary of the Invention

[0005] This application provides an integrated micro - channel structure and a water heater. By fixing the refrigerant pipe on the manifold pipe through a refrigerant bracket, an integrated design of the micro - channel pipes, the manifold pipe, the refrigerant pipe, and the refrigerant bracket is realized, so as to solve the problems in the prior art that the manifold pipe and the refrigerant pipe are separately arranged and need to be welded outside the micro - channel heat exchanger, and problems such as missed welding and offset welding may occur during the welding process.

[0006] In a first aspect, this application provides an integrated micro - channel structure, which is applied to a water tank and includes micro - channel pipes, a manifold pipe, a refrigerant pipe, and a refrigerant bracket.

[0007] A plurality of the micro - channel pipes are provided, and each of the micro - channel pipes is used to be sequentially and spacedly arranged around the water tank and fit with the water tank. The micro - channel pipes are communicated with the manifold pipe. The refrigerant bracket is arranged on the manifold pipe, and the refrigerant pipe is arranged on the refrigerant bracket and communicated with the manifold pipe.

[0008] The refrigerant pipeline is used to convey a refrigerant medium to the manifold pipeline, and the manifold pipeline conveys the refrigerant medium into the microchannel pipeline, so that the refrigerant medium in the microchannel pipeline exchanges heat with the water in the water tank through the outer wall of the water tank.

[0009] In an embodiment of the present invention, the manifold pipeline includes a first manifold pipe and a second manifold pipe.

[0010] The first manifold pipe and the second manifold pipe are parallel to each other and are both arranged on the outer side wall of the water tank. Both ends of the microchannel pipeline are respectively communicated with the first manifold pipe and the second manifold pipe. The refrigerant bracket is arranged on at least one of the first manifold pipe and the second manifold pipe, and the refrigerant pipeline is communicated with the first manifold pipe.

[0011] In an embodiment of the present invention, the refrigerant bracket includes a mounting plate and fixing members, and the refrigerant pipeline includes an intake pipe and an outlet pipe.

[0012] One end of the intake pipe is communicated with the first manifold pipe, and an intake valve is arranged at the other end of the intake pipe. One end of the outlet pipe is communicated with the first manifold pipe, and an outlet valve is arranged at the other end of the outlet pipe.

[0013] The mounting plate is arranged on at least one of the first manifold pipe and the second manifold pipe. Limiting grooves are arranged on both opposite sides of the mounting plate, and the two fixing members respectively fix the intake valve and the outlet valve in the corresponding limiting grooves on both sides.

[0014] In an embodiment of the present invention, the fixing member includes two relatively arranged fixing blocks, and both of the two fixing blocks are detachably connected to the mounting plate.

[0015] An arc-shaped groove is arranged on the side wall of each fixing block facing the intake valve or the outlet valve, and at least a part of the intake valve or the outlet valve is located in the arc-shaped groove. The intake valve or the outlet valve is fixed by the arc-shaped grooves on the two fixing blocks.

[0016] In an embodiment of the present invention, a connecting buckle is further included, and a connecting portion is arranged on the mounting plate.

[0017] A clamping groove is arranged at one end of the connecting buckle, and the clamping groove is clamped to the first manifold pipe or the second manifold pipe. The other end of the buckle is detachably connected to the connecting portion.

[0018] In an embodiment of the present invention, at least three partitions are provided in both the first manifold and the second manifold. The first manifold is partitioned into a first diversion pipe, a third diversion pipe, and a fifth diversion pipe by two of the partitions; the second manifold is partitioned into a second diversion pipe and a fourth diversion pipe by one of the partitions.

[0019] The intake pipe is communicated with the first diversion pipe, and the exhaust pipe is communicated with the fifth diversion pipe.

[0020] The first diversion pipe, the second diversion pipe, the third diversion pipe, the fourth diversion pipe, and the fifth diversion pipe are communicated through the microchannel pipes arranged in sequence, and are divided into a first pipe group, a second pipe group, a third pipe group, and a fourth pipe group according to the passage directions of the microchannel pipes;

[0021] One end of the first pipe group is communicated with the first diversion pipe, and the other end of the first pipe group is communicated with the second diversion pipe.

[0022] One end of the second pipe group is communicated with the second diversion pipe, and the other end of the second pipe group is communicated with the third diversion pipe.

[0023] One end of the third pipe group is communicated with the third diversion pipe, and the other end of the third pipe group is communicated with the fourth diversion pipe.

[0024] One end of the fourth pipe group is communicated with the fourth diversion pipe, and the other end of the fourth pipe group is communicated with the fifth diversion pipe.

[0025] In an embodiment of the present invention, there are at least four microchannel pipes in each of the first pipe group, the second pipe group, the third pipe group, and the fourth pipe group. The number of microchannel pipes in the first pipe group, the second pipe group, the third pipe group, and the fourth pipe group decreases in sequence, and the microchannel pipes are flat pipes.

[0026] In an embodiment of the present invention, the intake pipe includes an intake aluminum alloy pipe and an intake copper pipe that are communicated with each other. The intake aluminum alloy pipe is communicated with the first manifold, and the intake copper pipe is communicated with the intake valve.

[0027] The exhaust pipe includes an exhaust aluminum alloy pipe and an exhaust copper pipe that are communicated with each other. The exhaust aluminum alloy pipe is communicated with the first manifold, and the exhaust copper pipe is communicated with the exhaust valve.

[0028] In an embodiment of the present invention, a plurality of connectors are arranged at intervals on both the first manifold and the second manifold, and two adjacent connectors are connected by a spring.

[0029] Second aspect, the present invention provides a water heater, comprising a heat pump unit and a water tank. An integrated microchannel structure as described in the first aspect is provided in the heat pump unit, and the integrated microchannel structure is disposed on the water tank.

[0030] The present application provides an integrated microchannel structure and a water heater, which are applied to a water tank and include a microchannel pipeline, a manifold pipeline, a refrigerant pipeline, and a refrigerant bracket. A plurality of microchannel pipelines are provided, and each microchannel pipeline is used to sequentially and spacedly surround the water tank and fit with the water tank. The microchannel pipeline is communicated with the manifold pipeline. The refrigerant bracket is disposed on the manifold pipeline, and the refrigerant pipeline is disposed on the refrigerant bracket and communicated with the manifold pipeline. The refrigerant pipeline is used to convey a refrigerant medium to the manifold pipeline, the manifold pipeline conveys the refrigerant medium into the microchannel pipeline, and the refrigerant medium in the microchannel pipeline exchanges heat with the water in the water tank through the outer wall of the water tank. By fixing the refrigerant pipeline on the manifold pipeline through the refrigerant bracket, an integrated design of the microchannel pipeline, the manifold pipeline, the refrigerant pipeline, and the refrigerant bracket is realized, which can not only avoid problems such as virtual soldering and offset soldering of the weld points between the manifold pipeline and the microchannel pipeline, but also fix the refrigerant pipeline in the middle of the microchannel pipeline, facilitating installation and assembly during product production and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0032] Figure 1 FIG. is a schematic structural diagram of an integrated microchannel structure proposed by the present invention installed on a water tank;

[0033] Figure 2 FIG. is a schematic structural diagram of an integrated microchannel structure proposed by the present invention;

[0034] Figure 3 FIG. is a schematic structural diagram of a refrigerant bracket in an integrated microchannel structure proposed by the present invention;

[0035] Figure 4 is Figure 3 a schematic structural diagram of the mounting plate in;

[0036] Figure 5 is Figure 3 a schematic structural diagram of the fixing member in;

[0037] Figure 6 FIG. is a refrigerant medium flow diagram of an integrated microchannel structure proposed by the present invention.

[0038] Reference numerals:

[0039] 100 - water tank;

[0040] 200 - microchannel pipeline; 210 - first pipeline group; 220 - second pipeline group; 230 - third pipeline group; 240 - fourth pipeline group;

[0041] 300 - manifold pipeline; 310 - first manifold pipe; 311 - first diversion pipe; 312 - third diversion pipe; 313 - fifth diversion pipe; 320 - second manifold pipe; 321 - second diversion pipe; 322 - fourth diversion pipe; 330 - spacer;

[0042] 400 - refrigerant pipeline; 410 - intake pipe; 411 - intake valve; 420 - outlet pipe; 421 - outlet valve;

[0043] 500 - refrigerant bracket; 510 - mounting plate; 511 - limiting groove; 512 - connecting part; 513 - limiting block; 520 - fixing part; 521 - fixing block; 5211 - arc groove;

[0044] 600 - connecting buckle; 610 - clamping groove;

[0045] 700 - spring;

[0046] 800 - connecting piece.

[0047] Through the above - mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0048] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0049] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above - mentioned drawings are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0050] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0051] In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "inside", "outside", "above", "bottom", "front", "rear", etc. (if any) is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0052] Existing air - source heat pumps include a heat pump system and a micro - channel heat exchanger. The heat pump system delivers high - temperature refrigerant medium to the micro - channel heat exchanger through the reverse Carnot cycle principle. Among them, the heat pump system is usually installed outdoors and consists of a compressor, an evaporator, and a throttling device. The micro - channel heat exchanger consists of a manifold pipe and micro - channel pipes. The heat pump system is welded to the manifold pipe in the micro - channel heat exchanger through a refrigerant pipe. The manifold pipe delivers the high - temperature refrigerant medium to the micro - channel pipes. The micro - channel pipes are wrapped outside the water tank, thereby exchanging heat with the water in the water tank to achieve the purpose of heating the water.

[0053] Since the manifold pipe is directly welded to the refrigerant pipe without a support structure, the solder joint between the manifold pipe and the micro - channel pipes is likely to break, resulting in the leakage of the refrigerant medium. To address the above - mentioned problem, the present invention provides an integrated micro - channel structure. The refrigerant pipe is fixed to the manifold pipe through a refrigerant bracket, realizing the integrated design of the micro - channel pipes, the manifold pipe, the refrigerant pipe, and the refrigerant bracket, so as to solve the problem that the solder joint between the manifold pipe and the refrigerant pipe in the prior art is likely to break. The present invention will be described in detail below with reference to the drawings.

[0054] Among them, Figure 1 is a schematic structural diagram of an integrated micro - channel structure proposed by the present invention installed on a water tank; Figure 2 is a schematic structural diagram of an integrated micro - channel structure proposed by the present invention; Figure 3 is a schematic structural diagram of a refrigerant bracket in an integrated micro - channel structure proposed by the present invention; Figure 4 is Figure 3 a schematic structural diagram of the mounting plate in Figure 5 is Figure 3 a schematic structural diagram of the fixing member in Figure 6 is a refrigerant medium flow diagram of an integrated micro - channel structure proposed by the present invention.

[0055] Combined Figure 1 As shown, the present application provides an integrated microchannel structure, which is applied to the water tank 100 and includes a microchannel pipeline 200, a manifold pipeline 300, a refrigerant pipeline 400, and a refrigerant bracket 500.

[0056] A plurality of microchannel pipelines 200 are provided. Each microchannel pipeline 200 is used to be sequentially and spacedly arranged around the water tank 100 and fit with the water tank 100. The microchannel pipeline 200 is communicated with the manifold pipeline 300. The refrigerant bracket 500 is arranged on the manifold pipeline 300, and the refrigerant pipeline 400 is arranged on the refrigerant bracket 500 and communicated with the manifold pipeline 300.

[0057] The refrigerant pipeline 400 is used to transport a refrigerant medium to the manifold pipeline 300. The manifold pipeline 300 transports the refrigerant medium into the microchannel pipeline 200. The refrigerant medium in the microchannel pipeline 200 exchanges heat with the water in the water tank 100 through the outer wall of the water tank 100.

[0058] The refrigerant pipeline 400 is fixed on the manifold pipeline 300 through the refrigerant bracket 500, realizing the integrated design of the microchannel pipeline 200, the manifold pipeline 300, the refrigerant pipeline 400, and the refrigerant bracket 500. This can not only avoid the problem of the solder joint between the manifold pipeline 300 and the microchannel pipeline 200 being disconnected, but also fix the refrigerant pipeline 400 in the middle of the microchannel pipeline 200, facilitating the installation and assembly during product production and improving the production efficiency.

[0059] Among them, the present invention is applied to a water heater. The water heater includes a heat pump unit and a water tank 100. The above integrated microchannel structure is arranged in the heat pump unit, and the integrated microchannel structure is arranged on the water tank 100. The heat pump unit is arranged outside the room like an air conditioner outdoor unit. The heat pump unit includes a compressor, an evaporator, and a throttling device. The evaporator and the throttling device are connected to the manifold pipeline 300 through the refrigerant pipeline 400. The compressor transfers the compressed high-temperature and high-pressure refrigerant medium to the manifold pipeline 300, and distributes it to the microchannel pipeline 200 through the manifold pipeline 300, thereby heating the water in the water tank 100. After the heating is completed, the refrigerant medium enters the throttling device and the evaporator through the manifold pipeline 300, and returns to the compressor after throttling, pressure reduction, and cooling.

[0060] As Figure 2 shown, in the embodiment of the present invention, the manifold pipeline 300 includes a first manifold pipe 310 and a second manifold pipe 320.

[0061] The first manifold 310 and the second manifold 320 are parallel to each other and are both arranged on the outer side wall of the water tank 100. Both ends of the microchannel pipeline 200 are respectively communicated with the first manifold 310 and the second manifold 320. The refrigerant bracket 500 is arranged on at least one of the first manifold 310 and the second manifold 320, and the refrigerant pipeline 400 is communicated with the first manifold 310.

[0062] Among them, both the first manifold 310 and the second manifold 320 are used to uniformly distribute the refrigerant medium into different microchannel pipelines 200. The refrigerant bracket 500 is arranged on the first manifold 310. According to the actual situation, the refrigerant bracket 500 can also be arranged on the second manifold 320. The refrigerant bracket 500 is mainly used to fix the refrigerant pipeline 400.

[0063] In the present invention, the water tank 100 is vertically placed on the ground. Therefore, the first manifold 310 and the second manifold 320 are vertically arranged on the outer side wall of the water tank 100, and the distance between the two is less than 20 cm. The microchannel pipeline 200 is arranged around the outer side of the water tank 100 to maximize the contact area between the microchannel pipeline 200 and the water tank 100.

[0064] Combined Figures 2 to 4 As shown, in the embodiment of the present invention, the refrigerant bracket 500 includes a mounting plate 510 and a fixing member 520, and the refrigerant pipeline 400 includes an intake pipe 410 and an exhaust pipe 420.

[0065] One end of the intake pipe 410 is communicated with the first manifold 310, and an intake valve 411 is arranged at the other end of the intake pipe 410. One end of the exhaust pipe 420 is communicated with the first manifold 310, and an exhaust valve 421 is arranged at the other end of the exhaust pipe 420.

[0066] The mounting plate 510 is arranged on at least one of the first manifold 310 and the second manifold 320. Limiting grooves 511 are arranged on both opposite sides of the mounting plate 510, and the two fixing members 520 respectively fix the intake valve 411 and the exhaust valve 421 in the corresponding limiting grooves 511 on both sides.

[0067] Among them, in this embodiment, the mounting plate 510 is fixed on the first manifold 310. The mounting plate 510 and the fixing member 520 are made of conventional materials such as 304 stainless steel, aluminum alloy, copper, etc., and are manufactured by conventional processes such as die stamping, welding, and bolt fixing.

[0068] The intake valve 411 of the intake pipe 410 and the exhaust valve 421 of the exhaust pipe 420 are respectively connected to the compressor and the throttling device through pipelines. Both the intake valve 411 and the exhaust valve 421 are installed on the mounting plate 510, and the intake pipe 410 and the exhaust pipe 420 are fixed by fixing the intake valve 411 and the exhaust valve 421.

[0069] To prevent the intake pipe 410 and the outlet pipe 420 from rotating or moving, after the intake pipe 410 and the outlet pipe 420 are placed in the limit groove 511, the intake pipe 410 and the outlet pipe 420 are fixed by the fixing member 520, so as to ensure that the intake pipe 410 and the outlet pipe 420 do not move or rotate.

[0070] Among them, the intake pipe 410 and the outlet pipe 420 can be fixed to the corresponding fixing member 520 by welding, or an integrally formed part can be used.

[0071] Such as Figure 5 As shown, in the embodiment of the present invention, the fixing member 520 is welded to the intake valve 411 or the outlet valve 421. The fixing member 520 includes two relatively arranged fixing blocks 521, and both fixing blocks 521 are detachably connected to the mounting plate 510.

[0072] An arc-shaped groove 5211 is provided on the side wall of each fixing block 521 facing the intake valve 411 or the outlet valve 421. At least a part of the intake valve 411 or the outlet valve 421 is located in the arc-shaped groove 5211, and the intake valve 411 or the outlet valve 421 is fixed by the arc-shaped grooves 5211 on the two fixing blocks 521.

[0073] Among them, threaded holes are provided on both the fixing block 521 and the mounting plate 510, and bolts pass through the threaded holes on the fixing block 521 and are connected to the threaded holes on the mounting plate 510, so as to realize the detachable connection between the fixing block 521 and the mounting plate 510.

[0074] Adopting the arc-shaped groove 5211 is beneficial to increasing the contact area between the fixing block 521 and the intake valve 411 or the outlet valve 421, thereby improving the connection strength between them.

[0075] Combined with Figures 2 to 4 As shown, in the embodiment of the present invention, a connection buckle 600 is further included, and a connection portion 512 is provided on the mounting plate 510.

[0076] A clamping groove 610 is provided at one end of the connection buckle 600. The clamping groove 610 is clamped to the first manifold 310 or the second manifold 320, and the other end of the buckle is detachably connected to the connection portion 512.

[0077] The connection buckle 600 is mainly used for the connection between the mounting plate 510 and the manifold pipeline 300. Among them, in the present invention, the mounting plate 510 and the first manifold 310 are connected by two connection buckles 600. One end of the connection buckle 600 is semi-circular and can be clamped to the outer wall of the first manifold 310, and the connection between the two is strengthened by welding.

[0078] The other end of the connecting buckle 600 is provided with a threaded hole. The mounting plate 510 is a C-shaped structural member. Two connecting portions 512 extend from the bottom of the mounting plate 510 towards the direction of the first manifold 310. Each connecting portion 512 is also provided with a threaded hole. The connection between the two connecting portions 512 and the two connecting buckles 600 is achieved through bolts, thereby fixing the mounting plate 510 on the first manifold 310.

[0079] In the above solution of the connecting buckle 600, a limiting block 513 is provided on one of the connecting portions 512. The limiting block 513 is semi-circular. After the connecting portion 512 is installed on the connecting buckle 600, a part of the connecting buckle 600 is located within the limiting block 513, thereby preventing the connecting portion 512 from moving and further strengthening the connection.

[0080] As Figure 6 shown, in the embodiment of the present invention, at least three partitions 330 are provided in both the first manifold 310 and the second manifold 320. The first manifold 310 is partitioned into a first flow guide pipe 311, a third flow guide pipe 312, and a fifth flow guide pipe 313 by two partitions 330; the second manifold 320 is partitioned into a second flow guide pipe 321 and a fourth flow guide pipe 322 by one partition 330.

[0081] The intake pipe 410 is communicated with the first flow guide pipe 311, and the outlet pipe 420 is communicated with the fifth flow guide pipe 313.

[0082] The first flow guide pipe, the second flow guide pipe, the third flow guide pipe, the fourth flow guide pipe, and the fifth flow guide pipe are communicated through the micro-channel pipelines 200 arranged in sequence, and are divided into a first pipeline group 210, a second pipeline group 220, a third pipeline group 230, and a fourth pipeline group 240 according to the passage directions of the respective micro-channel pipelines 200.

[0083] One end of the first pipeline group 210 is communicated with the first flow guide pipe 311, and the other end of the first pipeline group 210 is communicated with the second flow guide pipe 321.

[0084] One end of the second pipeline group 220 is communicated with the second flow guide pipe 321, and the other end of the second pipeline group 220 is communicated with the third flow guide pipe 312.

[0085] One end of the third pipeline group 230 is communicated with the third flow guide pipe 312, and the other end of the third pipeline group 230 is communicated with the fourth flow guide pipe 322.

[0086] One end of the fourth pipeline group 240 is communicated with the fourth flow guide pipe 322, and the other end of the fourth pipeline group 240 is communicated with the fifth flow guide pipe 313.

[0087] The first header pipe 310 and the second header pipe 320 are divided into five flow guide pipes by the spacer 330, and the refrigerant medium is evenly distributed to each position of the water tank 100 through four pipe groups, increasing the heat exchange area between the flat pipes and the water tank 100, thereby increasing the heat exchange efficiency.

[0088] Among them, after the heat pump unit conveys the refrigerant medium to the integrated microchannel structure, the refrigerant medium enters the intake pipe 410 from the intake valve 411, enters the first header pipe 310 after passing through the intake pipe 410, and the first header pipe 310 then distributes the refrigerant medium to the first pipe group 210. After flowing through the water tank 100, the refrigerant medium flows into the second header pipe 320, then enters the second pipe group 220 from the second header pipe 320, then enters the third header pipe from the second pipe group 220, and enters the third pipe group 230 from the third header pipe. The third pipe group 230 then enters the fourth header pipe. After flowing through the fourth header pipe, it enters the fourth pipe group 240. The refrigerant medium in the fourth pipe group 240 finally enters the fifth header pipe, enters the outlet pipe 420 from the fifth header pipe, and returns to the heat pump unit after flowing through the outlet valve 421 to complete the cycle.

[0089] In the embodiment of the present invention, there are at least four microchannel pipes 200 in each of the first pipe group 210, the second pipe group 220, the third pipe group 230, and the fourth pipe group 240, and the number of microchannel pipes 200 in the first pipe group 210, the second pipe group 220, the third pipe group 230, and the fourth pipe group 240 decreases in turn; the microchannel pipes 200 are flat pipes.

[0090] In this embodiment, the first pipe group 210 is provided with nine flat pipes, the second pipe group 220 is provided with seven flat pipes, the third pipe group 230 is provided with six flat pipes, and the fourth pipe group 240 is provided with four flat pipes.

[0091] By setting the several pipe groups with flat pipes in the order of 9-7-6-4, the liquid separation and flow splitting of the refrigerant medium are made more smooth, avoiding liquid accumulation in the flat pipes at the top and bottom, improving the heat exchange efficiency. Due to its better liquid separation and flow splitting effect, it can work under conditions of lower temperature, with a wider application range.

[0092] As shown in the following table, where COP is the heating energy efficiency ratio, the width of the flat pipes in each pipe group is 25.4 mm, and the gap between the flat pipes is 5 mm. By using flat pipes with a width of 25.4 mm, compared with the existing flat pipes with a width of 16 mm, the contact area between the flat pipes and the water tank 100 is increased, and the COP value is increased to 4.56. Therefore, the heating efficiency is improved, the stability of the product is improved, it is convenient for users to better control the temperature of the water heater, and the user experience is enhanced. Flat tube width Heating capacity Heating power COP 25.4 mm 3663 kJ 822W 4.56 16 mm 3522 kJ 815W 4.2

[0093] In an embodiment of the present invention, the intake pipe 410 includes an intake aluminum alloy pipe and an intake copper pipe that are interconnected. The intake aluminum alloy pipe is connected to the first manifold 310, and the intake copper pipe is connected to the intake valve 411.

[0094] The outlet pipe 420 includes an outlet aluminum alloy pipe and an outlet copper pipe that are interconnected. The outlet aluminum alloy pipe is connected to the first manifold 310, and the outlet copper pipe is connected to the outlet valve 421.

[0095] By setting the part close to the intake valve 411 as the intake copper pipe and the part close to the outlet valve 421 as the outlet copper pipe, the use of aluminum alloy pipes can effectively save material costs. Both the manifold pipeline 300 and the pipeline group can be made of aluminum alloy material, thereby reducing production costs.

[0096] In an embodiment of the present invention, a plurality of connectors 800 are spaced apart on both the first manifold 310 and the second manifold 320, and two adjacent connectors 800 are connected by a spring 700.

[0097] Among them, the connector can be a connection buckle. As Figure 2 shown, mainly four springs 700 are provided. Hooks are provided at both ends of each spring, and the hooks at both ends are hooked with connection buckles 600, and the connection buckles 600 are connected to the manifold pipelines 300 on both sides.

[0098] Among them, the uppermost spring 700 is a conventional spring, and the three lower springs 700 are special-shaped springs 700. Since the three lower special-shaped springs 700 need to avoid the intake pipe 410 or the outlet pipe 420, the two ends of the special-shaped spring 700 need to be bent to form an avoidance portion, and the intake pipe 410 or the outlet pipe 420 is located within the avoidance portion, so that the installation of the special-shaped spring 700 is not affected.

[0099] In the present invention, by integrally fixing the microchannel pipeline 200, the manifold pipeline 300, and the refrigerant pipeline 400 on the refrigerant bracket 500, the components can be assembled by large equipment, providing a favorable way for the unmanned and digital factory. Through the snap connection, a locking structure is formed, greatly improving the assembly efficiency with the water tank 100 and avoiding the problem of the solder joint between the manifold pipeline 300 and the microchannel pipeline 200 being disconnected.

[0100] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application.

Claims

1. An integrated microchannel structure is applied to a water tank. It is characterized in that it includes a microchannel pipeline, a manifold pipeline, a refrigerant pipeline and a refrigerant bracket; A plurality of the microchannel pipelines are provided, and each of the microchannel pipelines is used to be sequentially and spacedly arranged around the water tank and fit with the water tank. The microchannel pipeline is communicated with the manifold pipeline. The refrigerant bracket is arranged on the manifold pipeline, and the refrigerant pipeline is arranged on the refrigerant bracket and communicated with the manifold pipeline; The refrigerant pipeline is used to convey a refrigerant medium to the manifold pipeline, and the manifold pipeline conveys the refrigerant medium into the microchannel pipeline, so that the refrigerant medium in the microchannel pipeline exchanges heat with the water in the water tank through the outer wall of the water tank.

2. The integrated microchannel structure according to claim 1, It is characterized in that the manifold pipeline includes a first manifold pipe and a second manifold pipe; The first manifold pipe and the second manifold pipe are parallel to each other and are both arranged on the outer side wall of the water tank. The two ends of the microchannel pipeline are respectively communicated with the first manifold pipe and the second manifold pipe. The refrigerant bracket is arranged on at least one of the first manifold pipe and the second manifold pipe, and the refrigerant pipeline is communicated with the first manifold pipe.

3. The integrated microchannel structure according to claim 2, It is characterized in that the refrigerant bracket includes a mounting plate and fixing parts, and the refrigerant pipeline includes an inlet pipe and an outlet pipe; One end of the inlet pipe is communicated with the first manifold pipe, and an inlet valve is arranged at the other end of the inlet pipe. One end of the outlet pipe is communicated with the first manifold pipe, and an outlet valve is arranged at the other end of the outlet pipe; The mounting plate is arranged on at least one of the first manifold pipe and the second manifold pipe. Limiting grooves are arranged on both opposite sides of the mounting plate, and the two fixing parts respectively fix the inlet valve and the outlet valve in the corresponding limiting grooves on both sides.

4. The integrated microchannel structure according to claim 3, It is characterized in that the fixing part includes two relatively arranged fixing blocks, and both of the two fixing blocks are detachably connected to the mounting plate; An arc-shaped groove is arranged on the side wall of each fixing block facing the inlet valve or the outlet valve, and at least part of the inlet valve or the outlet valve is located in the arc-shaped groove, and the inlet valve or the outlet valve is fixed by the arc-shaped grooves on the two fixing blocks.

5. The integrated microchannel structure according to claim 4, It is characterized in that it further includes a connecting buckle, and a connecting part is arranged on the mounting plate; One end of the connecting buckle is provided with a clamping groove, and the clamping groove is clamped to the first manifold pipe or the second manifold pipe, and the other end of the buckle is detachably connected to the connecting part.

6. The integrated microchannel structure according to claim 5, It is characterized in that At least three partitions are provided in both the first manifold and the second manifold. The first manifold is partitioned into a first diversion pipe, a third diversion pipe, and a fifth diversion pipe by two of the partitions; the second manifold is partitioned into a second diversion pipe and a fourth diversion pipe by one of the partitions; The intake pipe is communicated with the first diversion pipe, and the exhaust pipe is communicated with the fifth diversion pipe; The first diversion pipe, the second diversion pipe, the third diversion pipe, the fourth diversion pipe, and the fifth diversion pipe are communicated through the microchannel pipes arranged in sequence, and are divided into a first pipe group, a second pipe group, a third pipe group, and a fourth pipe group according to the passage directions of the microchannel pipes; one end of the first pipe group is communicated with the first diversion pipe, and the other end of the first pipe group is communicated with the second diversion pipe; One end of the second pipe group is communicated with the second diversion pipe, and the other end of the second pipe group is communicated with the third diversion pipe; One end of the third pipe group is communicated with the third diversion pipe, and the other end of the third pipe group is communicated with the fourth diversion pipe; One end of the fourth pipe group is communicated with the fourth diversion pipe, and the other end of the fourth pipe group is communicated with the fifth diversion pipe.

7. The integrated microchannel structure according to claim 6, wherein, There are at least four of the microchannel pipes in each of the first pipe group, the second pipe group, the third pipe group, and the fourth pipe group, and the number of the microchannel pipes in the first pipe group, the second pipe group, the third pipe group, and the fourth pipe group decreases in sequence; The microchannel pipe is a flat pipe.

8. The integrated microchannel structure according to claim 7, wherein, The intake pipe includes an intake aluminum alloy pipe and an intake copper pipe that are communicated with each other. The intake aluminum alloy pipe is communicated with the first manifold, and the intake copper pipe is communicated with the intake valve; The exhaust pipe includes an exhaust aluminum alloy pipe and an exhaust copper pipe that are communicated with each other. The exhaust aluminum alloy pipe is communicated with the first manifold, and the exhaust copper pipe is communicated with the exhaust valve.

9. The integrated microchannel structure according to any one of claims 2-7, wherein, A plurality of connectors are arranged at intervals on both the first manifold and the second manifold, and two adjacent connectors are connected by a spring.

10. A water heater, wherein, It includes a heat pump unit and a water tank. The integrated microchannel structure as described in any one of claims 1-9 is provided in the heat pump unit, and the integrated microchannel structure is arranged on the water tank.

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