Heat exchanger and heating and refrigerating combined system

Abstract

The invention discloses a heat exchanger and a heating and refrigerating combined system.The heat exchanger comprises a frame body, the frame body comprises a containing cavity, the containing cavity comprises a first cavity and a second cavity, and a first working medium and a second working medium are arranged in the first cavity and the second cavity respectively; the wire pipes communicate with the first cavity and the second cavity correspondingly, the wire pipes can draw out the first working medium and the second working medium from the first cavity and the second cavity and enable the first working medium and the second working medium to exchange heat, the multiple wire pipes are arranged side by side, an air channel is formed between the multiple wire pipes, and one-way air can flow through the air channel. And the first working medium and the second working medium in the doubling pipe exchange heat. The heat exchanger breaks through the limitation of a traditional double-working-medium heat exchanger, further meets the requirement of a multi-energy complementary scene, can be arranged at the outlet position of a heating and refrigerating combined system during use, and can conduct heat exchange on the outside, so that heating or refrigerating is achieved according to the requirement.

Description

Technical Field

[0001] The present invention belongs to the field of combined heating and cooling systems, and particularly relates to a heat exchanger and a combined heating and cooling system. Background Art

[0002] In the field of heating and cooling equipment, heat exchangers are usually the core components for realizing heat exchange. In fact, a heat exchanger is an energy-saving device that realizes heat transfer between materials among two or more fluids at different temperatures, which enables heat to be transferred from a fluid at a higher temperature to a fluid at a lower temperature, so that the fluid temperature reaches the specified index of the process, to meet the needs of process conditions, and is also one of the main devices for improving energy utilization efficiency.

[0003] Existing heat exchangers usually act as dual-fluid heat exchangers, that is, heat is transferred between two working fluids. However, with the evolution of the multi-energy complementary energy structure, in a large number of energy utilization scenarios, such as in high-power air conditioners, the heat exchanger is usually arranged at the air outlet of the air conditioner, and a blower is configured inside to output and inhale air. The heat exchanger inputs refrigerant and heat medium to heat or cool the air. However, over time, the temperature of a single refrigerant or heat medium will gradually tend to the intermediate value, resulting in a gradual decrease in the temperature adjustment efficiency of the air. Therefore, the heat exchange method of two working fluids usually cannot meet the requirements of frequent temperature changes of the equipment, and the use of existing dual-fluid heat exchangers often reduces the equipment operation efficiency due to the inability to accurately adjust the temperature.

[0004] Therefore, there is an urgent need to design a heat exchanger and a combined heating and cooling system to solve the above-mentioned problems. Summary of the Invention

[0005] To solve the technical problem that existing dual-fluid heat exchangers often reduce the equipment operation efficiency due to the inability to accurately adjust the temperature mentioned in the background art, a heat exchanger and a combined heating and cooling system are provided.

[0006] To achieve the above object, the specific technical solutions of a heat exchanger and a combined heating and cooling system of the present invention are as follows: A heat exchanger includes a frame body, the frame body includes a receiving cavity, the receiving cavity includes a first chamber and a second chamber, a first working fluid and a second working fluid are respectively arranged in the first chamber and the second chamber, the heat exchanger further includes wire tubes, the wire tubes are respectively communicated with the first chamber and the second chamber, the wire tubes can extract the first working fluid and the second working fluid from the first chamber and the second chamber and enable the first working fluid and the second working fluid to exchange heat, there are a plurality of wire tubes, and the plurality of wire tubes are arranged side by side, an air duct is formed between the plurality of wire tubes, one-way air can flow through the air duct, and the first working fluid and the second working fluid in the wire tubes exchange heat.

[0007] Furthermore, the frame further includes an upper end plate and a lower end plate which are parallel and spaced apart. There are two accommodating cavities, respectively located on the left and right sides of the upper end plate and the lower end plate. The wire tube extends horizontally and communicates with the accommodating cavities on the left and right sides.

[0008] Furthermore, the frame further includes a number of fixing plates which are arranged horizontally in parallel at intervals and are located at the middle position of the frame. Both ends of the fixing plates are respectively connected to the upper end plate and the lower end plate, and the wire tube is successively passed through and installed on the number of fixing plates.

[0009] Furthermore, multiple installation positions are provided on the fixing plates, and the installation positions on different fixing plates are horizontally aligned, so that the wire tube can successively pass through the installation positions with the same height on different fixing plates, thereby communicating the accommodating cavities on the left and right sides of the frame.

[0010] Furthermore, the installation position includes a number of through holes which are longitudinally spaced apart. The through holes of adjacent installation positions are arranged in a staggered manner, so that the wire tubes passing through the fixing plates are arranged in a staggered and crossed manner.

[0011] Furthermore, the installation position includes a number of through holes which are longitudinally spaced apart. The longitudinal through holes of different installation positions are arranged in one-to-one correspondence horizontally, so that the wire tubes passing through the fixing plates are arranged horizontally and longitudinally.

[0012] Furthermore, the wire tube includes a first channel and a second channel which are connected and stacked with each other. One of the first channel and the second channel communicates with the first chamber, and the other communicates with the second chamber.

[0013] Furthermore, the length of the first channel is greater than the length of the second channel. The first channel communicates with the first chambers on both sides of the frame, and the second channel communicates with the second chambers on both sides of the frame. The distance between the two first chambers is greater than the distance between the two second chambers.

[0014] Furthermore, the length of the first channel is equal to the length of the second channel. The first channel communicates with the first chambers on both sides of the frame, and the second channel communicates with the second chambers on both sides of the frame. The distance between the two first chambers is equal to the distance between the two second chambers.

[0015] A combined heating and cooling system uses the above heat exchanger.

[0016] The heat exchanger of the present invention has the following advantages: The heat exchanger uses wire tubes to exchange heat between the first working fluid and the second working fluid in the first chamber and the second chamber. At the same time, by utilizing the air ducts formed between multiple wire tubes, there is no need to design the structure of the air ducts additionally, saving space. The air ducts cooperate with the unidirectional wind to exchange heat with the first working fluid and the second working fluid in the wire tubes, and also realize any combination of heat exchange among the three working fluids (the first working fluid and the second working fluid, the first working fluid and the unidirectional wind, the second working fluid and the unidirectional wind, and the first working fluid, the second working fluid and the unidirectional wind), breaking through the limitations of traditional double-working-fluid heat exchangers, achieving precise temperature regulation, and improving the operating efficiency of the equipment, thereby meeting the requirements of multi-energy complementary scenarios.

[0017] The combined heating and cooling system of the present invention has the following advantages: The combined heating and cooling system utilizes the heat exchange capabilities of three working fluids to improve the temperature regulation accuracy and response speed of the combined heating and cooling system, and enhance the system efficiency. Among them, the combined heating and cooling system uses unidirectional wind, i.e., wind energy, for auxiliary heat exchange, reducing additional energy consumption on the basis of achieving energy conservation and environmental protection, and further improving the operating efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the heat exchanger of the present invention; Figure 2 is an exploded view of the heat exchanger of the present invention; Figure 3 is an exploded view of the heat exchanger of the present invention from another perspective; Figure 4 is a schematic structural diagram of the fixing plate of the present invention; Figure 5 is a schematic structural diagram of another fixing plate of the present invention; Figure 6 is a schematic structural diagram of the through hole of the present invention; Figure 7 is a schematic structural diagram of another heat exchanger of the present invention; Figure 8 is a schematic structural diagram of the wire tubes and the fixing plate after installation of the present invention; Figure 9 is Figure 8 a partial enlarged view of part A in Figure 10 is a schematic structural diagram of another wire tubes and the fixing plate after installation of the present invention; Figure 11 is Figure 10 a partial enlarged view of part B in

[0019] Explanation of the reference numerals in the drawings: 1. Frame body; 11. Upper end plate; 12. Lower end plate; 13. Fixing plate; 131. Through hole; 2. Accommodating cavity; 21. First chamber; 22. Second chamber; 3. Silk tube; 31. First channel; 32. Second channel. Detailed implementation manners

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0022] Next, refer to the attached Figure 1 to the attached Figure 11 Describe a heat exchanger and a combined heating and cooling system of the present invention.

[0023] This embodiment provides a heat exchanger. Figure 1 is a schematic structural diagram of the heat exchanger of this embodiment; Figure 2 is an exploded view of the heat exchanger of this embodiment; Figure 3 is an exploded view of the heat exchanger of this embodiment from another perspective; as Figures 1 - 3 shown, the heat exchanger includes a frame body 1. The frame body 1 includes an accommodating cavity 2. The accommodating cavity 2 includes a first chamber 21 and a second chamber 22. A first working medium and a second working medium are respectively arranged in the first chamber 21 and the second chamber 22. The heat exchanger further includes a silk tube 3. The silk tube 3 is respectively communicated with the first chamber 21 and the second chamber 22. The silk tube 3 can extract the first working medium and the second working medium from the first chamber 21 and the second chamber 22 and enable the first working medium and the second working medium to exchange heat. A plurality of silk tubes 3 are provided, and the plurality of silk tubes 3 are arranged side by side. An air duct 4 is formed between the plurality of silk tubes 3. One-way air can flow through the air duct 4 and exchange heat with the first working medium and the second working medium in the silk tube 3.

[0024] The heat exchanger uses the wire tubes 3 to exchange heat between the first working fluid in the first chamber 21 and the second working fluid in the second chamber 22. At the same time, by using the air ducts 4 formed between multiple wire tubes 3, there is no need to design the structure of the air ducts 4 additionally, saving space. The air ducts 4 cooperate with the unidirectional air to exchange heat with the first working fluid and the second working fluid located in the wire tubes 3, and also realize the arbitrary combination of heat exchange among the three working fluids (the first working fluid and the second working fluid, the first working fluid and the unidirectional air, the second working fluid and the unidirectional air, and the first working fluid, the second working fluid and the unidirectional air), breaking through the limitations of traditional double-working-fluid heat exchangers, achieving the purpose of accurately adjusting the temperature, improving the operation efficiency of the equipment, and further meeting the requirements of multi-energy complementary scenarios.

[0025] Further, the frame 1 further includes an upper end plate 11 and a lower end plate 12 that are parallel and spaced apart. There are two accommodating chambers 2, which are respectively located on the left and right sides of the upper end plate 11 and the lower end plate 12. The wire tubes 3 extend horizontally and communicate with the accommodating chambers 2 on the left and right sides. The left-right symmetric chamber design makes the flow path of the working fluid balanced, avoiding uneven local heat exchange; the horizontal arrangement of the wire tubes 3 directly penetrates the two side chambers, reducing elbows or complex pipelines and lowering the flow resistance.

[0026] Further, the frame 1 further includes a number of fixing plates 13. The number of fixing plates 13 are arranged horizontally in parallel at intervals and are located in the middle of the frame 1. Both ends of the fixing plates 13 are respectively connected to the upper end plate 11 and the lower end plate 12. The wire tubes 3 are sequentially passed through and installed on the number of fixing plates 13. The fixing plates 13 support the wire tubes 3 and reinforce the overall structure of the frame 1, preventing vibration and deformation and improving the structural stability of the heat exchanger; the above structure enables the fixing plates 13 to be detachable, facilitating the maintenance or replacement of the wire tubes 3 and realizing modular design.

[0027] Further, multiple groups of installation positions are provided on the fixing plates 13. The installation positions on different fixing plates 13 are horizontally aligned, so that the wire tubes 3 can sequentially pass through the installation positions with the same height on different fixing plates 13, thereby communicating the accommodating chambers 2 on the left and right sides of the frame 1. The aligned installation positions ensure that the wire tubes 3 are linearly arranged, avoiding disordered flow of the working fluid and realizing accurate alignment installation; multiple groups of installation positions support flexible increase and decrease of the number of wire tubes 3, adapting to different heat exchange capacity requirements and improving the expandability and flexibility of the heat exchanger.

[0028] As a preferred embodiment, Figure 4 is a schematic structural diagram of the fixing plate of this embodiment, Figure 6 is a schematic structural diagram of the through hole of the present invention, as Figure 4 and Figure 6As shown, the installation positions include a plurality of through holes 131 that are longitudinally spaced apart, and the through holes 131 of adjacent installation positions are arranged in a staggered manner, so that the wire tubes 3 penetrating through the fixing plate 13 are arranged in a staggered fork pattern. The fork arrangement design increases the air flow disturbance in the air duct 4, improves the heat exchange efficiency, and enhances the turbulence. At the same time, the staggered layout reduces the risk of dust or impurities accumulating between the wire tubes 3, realizing the function of anti-blockage.

[0029] As a preferred embodiment, Figure 5 This is a schematic structural diagram of another fixing plate of this embodiment. As shown in Figure 5 and Figure 6 As shown, the installation positions include a plurality of through holes 131 that are longitudinally spaced apart, and the longitudinal through holes 131 of different installation positions are arranged in one-to-one correspondence along the transverse direction, so that the wire tubes 3 penetrating through the fixing plate 13 are arranged along the transverse and longitudinal directions. The regular arrangement makes the air flow distribution in the air duct 4 uniform, avoiding local overheating or overcooling; aligning the through holes 131 can simplify the processing technology and reduce the production cost.

[0030] Furthermore, the wire tube 3 includes a first channel 31 and a second channel 32 that are connected to each other and stacked. One of the first channel 31 and the second channel 32 communicates with the first chamber 21, and the other communicates with the second chamber 22. The double-channel stacking shortens the heat transfer distance between the working fluids and improves the heat transfer rate; the channel integrated design reduces the occupied volume of the wire tube 3 and further optimizes the space of the heat exchanger.

[0031] Specifically, Figure 7 This is a schematic structural diagram after the wire tube and the fixing plate of this embodiment are installed; Figure 8 is Figure 8 The partial enlarged view at A in Figure 7 and Figure 8 As shown, the length of the first channel 31 is equal to the length of the second channel 32. The first channel 31 communicates with the first chambers 21 located on both sides of the frame body 1, and the second channel 32 communicates with the second chambers 22 located on both sides of the frame body 1. The distance between the two first chambers 21 is equal to the distance between the two second chambers 22. The equal-length channels ensure that the flow resistance of the working fluid is consistent and avoid uneven flow.

[0032] As a preferred embodiment, Figure 9 This is a schematic structural diagram of another heat exchanger of this embodiment; Figure 10 This is a schematic structural diagram after another wire tube and fixing plate of this embodiment are installed; Figure 11 is Figure 10 The partial enlarged view at B in Figures 9 - 11As shown, the length of the first channel 31 is greater than that of the second channel 32. The first channel 31 communicates with the first chambers 21 located on both sides of the frame 1, and the second channel 32 communicates with the second chambers 22 located on both sides of the frame 1. The distance between the two first chambers 21 is greater than the distance between the two second chambers 22. The long and short channels are adapted to different working fluid flow requirements to achieve asymmetric temperature control.

[0033] It can be understood that during the actual operation process, the heat transfer coefficient between the heat exchange tubes can be adjusted by the thickness of the solder or thermal conductive adhesive between the first channel 31 and the second channel 32, and the heat transfer ratio between the three working fluids can be regulated. Also, the external wind resistance of the tubes can be controlled by adjusting the shapes of the first channel 31 and the second channel 32, the way of pipeline layout, and the distance between the pipelines. This embodiment does not make specific limitations.

[0034] It should be noted that the first channel 31 and the second channel 32 can be fixed to the working fluid distribution chamber by brazing or thermal conductive adhesive, as long as the internal working fluid pressure is satisfied; the wire tube 3 and the accommodation chamber 2 can be fixed by brazing or thermal conductive adhesive, as long as the internal working fluid pressure is satisfied; the material of the wire tube 3 can be selected according to the type of working fluid; air or flue gas can also replace the unidirectional wind as the third working fluid, which can realize heat exchange between any two of the first working fluid, the second working fluid, and the third working fluid, or can also realize heat exchange of all three at the same time.

[0035] This embodiment provides a combined heating and cooling system that uses the above heat exchanger. This combined heating and cooling system utilizes the heat exchange capabilities of three working fluids to improve the temperature regulation accuracy and response speed of the combined heating and cooling system, and enhance the system efficiency. Among them, this combined heating and cooling system utilizes unidirectional wind, that is, wind energy, for auxiliary heat exchange, which, on the basis of achieving energy conservation and environmental protection, reduces additional energy consumption and further improves the operation efficiency of the equipment.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A heat exchanger, comprising a frame body, the frame body including a receiving cavity, the receiving cavity including a first chamber and a second chamber, characterized in that, A first working fluid and a second working fluid are respectively arranged in a first chamber and a second chamber. The heat exchanger further includes wire tubes which are respectively communicated with the first chamber and the second chamber. The wire tubes can extract the first working fluid and the second working fluid from the first chamber and the second chamber and enable the first working fluid and the second working fluid to exchange heat. A plurality of wire tubes are provided and arranged side by side. An air duct is formed between the plurality of wire tubes. Unidirectional air can flow through the air duct and exchange heat with the first working fluid and the second working fluid in the wire tubes.

2. The heat exchanger according to claim 1, characterized in that, The frame further includes an upper end plate and a lower end plate which are parallel and spaced apart. There are two accommodating cavities, which are respectively located on the left and right sides of the upper end plate and the lower end plate. The wire tubes extend horizontally and communicate with the accommodating cavities on the left and right sides.

3. The heat exchanger according to claim 2, wherein, The frame further includes a plurality of fixing plates which are arranged horizontally in parallel at intervals and are located at the middle position of the frame. Both ends of the fixing plates are respectively connected to the upper end plate and the lower end plate. The wire tubes are sequentially passed through and installed on the plurality of fixing plates.

4. The heat exchanger according to claim 3, characterized in that, A plurality of groups of installation positions are provided on the fixing plates. The installation positions on different fixing plates are horizontally aligned so that the wire tubes can sequentially pass through the installation positions with the same height on different fixing plates, thereby communicating the accommodating cavities on the left and right sides of the frame.

5. The heat exchanger according to claim 4, characterized in that, The installation position includes a plurality of through holes which are longitudinally spaced apart. The through holes of adjacent installation positions are arranged in a staggered manner so that the wire tubes passing through the fixing plates are arranged in a staggered and crosswise manner.

6. The heat exchanger according to claim 4, wherein The installation position includes a plurality of through holes which are longitudinally spaced apart. The longitudinal through holes of different installation positions are arranged in one-to-one correspondence horizontally so that the wire tubes passing through the fixing plates are arranged horizontally and longitudinally.

7. The heat exchanger according to any one of claims 1-6, characterized in that, The wire tube includes a first channel and a second channel which are connected and stacked with each other. One of the first channel and the second channel is communicated with the first chamber, and the other is communicated with the second chamber.

8. The heat exchanger according to claim 7, wherein, The length of the first channel is greater than the length of the second channel. The first channel is communicated with the first chambers on both sides of the frame, and the second channel is communicated with the second chambers on both sides of the frame. The distance between the two first chambers is greater than the distance between the two second chambers.

9. The heat exchanger according to claim 7, characterized in that, The length of the first channel is equal to the length of the second channel. The first channel is communicated with the first chambers on both sides of the frame, and the second channel is communicated with the second chambers on both sides of the frame. The distance between the two first chambers is equal to the distance between the two second chambers.

10. A combined heating and cooling system, characterized in that, The heat exchanger as described in any one of claims 1-9 is used. The heat exchanger is arranged at the outlet of the combined system and is used for external refrigeration and heating.

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