Heat exchange system having a flexible heat exchanger

Abstract

To provide a heat exchange system which facilitates packaging, transportation and installation, and which has a flexible heat exchanger with high heat radiation efficiency.SOLUTION: In a heat exchange system having a flexible heat exchanger, the flexible heat exchanger has a flexible substrate 152 and a plurality of pieces of piping 150. The plurality of pieces of piping are installed in parallel on the flexible substrate. An introduction header 151 and a discharge header 153 are connected to both ends of the piping, respectively. The heat exchange system also comprises an outdoor heat exchange unit. The outdoor heat exchange unit is connected to each of the introduction header and the discharge header so as to form a circulating heat exchange system.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE This application relates to heat exchange systems, and more particularly to heat exchange systems having flexible heat exchangers. [Background technology]

[0002] In addition to heating using heat exchange sheets, floor heating is also a common heating method. Commonly used floor heating methods include radiant floor heating, water-based floor heating, and fluorine-based floor heating. All three types of floor heating first exchange heat into the concrete layer, then transfer it to the floor board or floor tile laid above, and finally dissipate it into the room, raising the temperature of the indoor air. The thickness of the concrete layer is relatively large, generally 2-3 cm, which inevitably leads to a decrease in the heat transfer efficiency and a slow heating rate in the room. Fluorine-based floor heating generally uses a heat pump heat exchange method, which has the highest thermal energy conversion efficiency and the lowest usage cost. Fluorine-based floor heating generally uses a heat exchanger made of metal piping, which has a relatively large inner diameter, generally larger than 4 mm, which limits the heat dissipation area, and the heat exchanger has a relatively high rigidity, which is inconvenient in packaging, transportation, and installation.

[0003] Meanwhile, the conventional battery pack heat dissipation device is generally filled in the gap of the battery, and the heat is transferred through the contact part between the heat dissipation device and the battery, thereby exchanging the heat dissipated from the battery. The drawback of this technology is that the hardness of the heat dissipation device is relatively large, and it cannot be tightly attached to the battery, so that the heat exchange efficiency is reduced.

[0004] Therefore, there is a need in the art for a heat exchanger that is easy to package, ship and install, and has high heat dissipation efficiency. Summary of the Invention [Problem to be solved by the invention]

[0005] The present application provides a heat exchange system having a flexible heat exchanger, which has the technical advantages of being easy to package, transport and install, and having high heat dissipation efficiency. [Means for solving the problem]

[0006] The present application relates to a heat exchange system having a flexible heat exchanger, the flexible heat exchanger comprising a flexible substrate and a plurality of pipes, the plurality of pipes being arranged in parallel on the flexible substrate, and an inlet header and an outlet header being connected to both ends of the pipes, respectively, the heat exchange system further comprising an outdoor heat exchange unit, the outdoor heat exchange unit being connected to the inlet header and the outlet header, respectively, to form a circulating heat exchange system.

[0007] The flexible heat exchanger is installed above a floor slab, the inlet header and the outlet header are installed at the bottom position of a wall, a bent portion is formed at the end of the flexible heat exchanger, a protective cover is fitted on the outside of the inlet header and the outlet header, a protective strip is provided at the edge position of the flexible heat exchanger in a direction perpendicular to the inlet header, the protective strip is fixed to the floor slab by a fixing member or attached to the floor slab, an insulating layer is installed between the flexible heat exchanger and the floor slab, a decorative layer is installed above the flexible heat exchanger, the flexible heat exchanger is installed on a wall, an insulating layer is installed between the flexible heat exchanger and the wall, the flexible heat exchanger has multiple sets of pipes installed at intervals, and holes are provided in the flexible substrate between the multiple sets of pipes.

[0008] The present application further relates to a refrigeration system utilizing natural convection, comprising an indoor heat exchange unit, an outdoor heat exchange unit and a pipeline connecting them, wherein the indoor heat exchange unit comprises a flexible heat exchanger, the flexible heat exchanger is installed on a ceiling panel or a wall surface of a building and comprises a plurality of parallel heat exchange tubes and a flexible substrate, an inlet header and an outlet header are provided at both ends of the plurality of parallel heat exchange tubes, respectively, and the heat exchange tubes are installed on the flexible substrate.

[0009] the indoor heat exchange unit further comprises a condensed water receiving device, the condensed water receiving device comprises a holder and a fan, the flexible heat exchanger is installed in the holder, the holder is attached to a building, the fan is attached to the holder, a decorative layer is further provided on a surface of the flexible heat exchanger, the flexible heat exchanger, the decorative layer and the ceiling board or wall surface of the building form a whole, the condensed water receiving device comprises a holder and a fan, the holder is attached to the building, the fan is attached to the holder, a plurality of through holes are provided in the flexible substrate, the through holes are installed to penetrate the flexible substrate, the diameter of the through holes is 1 to 2 mm or less than 1 mm, the outdoor heat exchange unit comprises an outdoor heat exchanger and a throttle valve, the throttle valve is installed between the outdoor heat exchanger and the flexible heat exchanger.

[0010] The present application further relates to a heat exchange system comprising a refrigeration system and a floor heating heat exchanger, the refrigeration system being as described above, characterized in that the floor heating heat exchanger and the indoor heat exchange unit are connected in parallel to the outdoor heat exchange unit.

[0011] The heat exchanger further includes a valve assembly, the heat exchange system of the indoor heat exchange unit is connected to the heat exchange system of the outdoor heat exchange unit by the valve assembly, the floor heating heat exchanger is connected to the heat exchange system of the outdoor heat exchange unit by the valve assembly, the heat exchange system of the indoor heat exchange unit and the floor heating heat exchanger are connected in parallel to the heat exchange system of the outdoor heat exchange unit, and the refrigerant supply and discharge pipes of the valve assembly are respectively connected to the heat exchanger of the indoor heat exchange unit, the floor heating heat exchanger, and the compressor and the outdoor heat exchanger in the outdoor heat exchange unit. When performing a refrigeration cycle, the valve assembly cuts off the connection between the heat exchange system of the outdoor heat exchange unit and the floor heating heat exchanger, and when performing a heating cycle, the valve assembly cuts off the connection between the heat exchange system of the outdoor heat exchange unit and the heat exchange system of the indoor heat exchange unit.

[0012] The flexible heat exchanger according to the present application may also be used in a battery assembly, the battery assembly including at least one battery pack arranged in parallel, the battery pack including at least one battery, and the flexible heat exchanger installed outside the battery pack. A thermally conductive adhesive may be provided between the flexible heat exchanger and the outside of the battery pack, or the flexible heat exchanger may be directly installed outside the battery pack, or may be installed on the inner wall of the battery compartment of the battery assembly. The battery assembly may include two or more battery packs, the flexible heat exchanger may be installed consecutively or at intervals in the battery pack, and each of the battery packs may include one or two rows of batteries. Effect of the Invention

[0013] A heat exchange system having a flexible heat exchanger according to the present application comprises: (1) The flexible heat exchanger according to the present application uses a flexible substrate and an inner diameter of the piping is smaller than 4 mm, which increases the flexibility of the entire heat exchanger, makes it easy to fold, transport and install, has a larger heat exchange area, and makes it easy for the flexible substrate to be attached to the contact surface, which makes it difficult to form cavities and improves the heat exchange efficiency. (2) The flexible heat exchanger of the present application can be directly installed on the floor or wall, and does not need to be embedded in the concrete layer, which avoids the disadvantages of high thermal resistance and low thermal conduction efficiency caused by the relatively thick concrete layer; it can also be laid on the wall in the form of a mesh cloth, and can be connected to an external heat exchange unit to not only realize the indoor circulating heat exchange, but also strengthen the structural strength, thus achieving a dual effect; (3) The flexible heat exchanger of the present application can be tightly attached to the surface of the battery, improving the heat exchange efficiency of the battery and dissipating heat as quickly as possible, thereby improving the service life and safety of the battery. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a partial schematic diagram of a flexible heat exchanger. [Diagram 2] FIG. 1 is a schematic diagram of a flexible heat exchanger. [Diagram 3] FIG. 1 is a schematic diagram of a flexible heat exchanger used in a floor heating heat exchange system. [Figure 4] FIG. 13 is a schematic diagram showing a flexible heat exchanger provided on a wall surface. [Diagram 5] FIG. 1 is a schematic diagram showing multiple sets of piping provided at intervals on a flexible substrate. [Figure 6] FIG. 13 is a structural schematic diagram of another flexible heat exchanger. [Figure 7] FIG. 1 is a schematic diagram of a refrigeration system. [Figure 8] FIG. 1 is a schematic diagram of a first embodiment of a refrigeration system for an indoor heat exchanger. [Figure 9] FIG. 4 is a schematic diagram of a second embodiment of the indoor heat exchanger refrigeration system; [Figure 10] FIG. 2 is a schematic diagram showing the engagement and installation of a refrigeration system and a floor heating heat exchanger. [Figure 11] FIG. 1 is a schematic diagram of a linked control system for floor heating and an air conditioner. [Figure 12] This is a schematic diagram of the system circulation during the refrigeration and cooling process of an air conditioner. [Figure 13] Schematic diagram of the system circulation in the heating process of an air conditioner. [Figure 14] FIG. 1 is a schematic diagram of a pavement plan of a flexible underfloor heating heat exchanger. [Figure 15] FIG. 2 is a schematic side view of a flexible floor heating heat exchanger. [Figure 16]This is a schematic assembly diagram of the header side of the flexible floor heating heat exchanger. [Figure 17] This is a schematic assembly diagram of the side edge portion of the flexible floor heating heat exchanger. [Figure 18] FIG. 1 is a schematic diagram of a battery pack with a flexible heat exchanger according to the present application. [Figure 19] FIG. 1 is a schematic diagram of a battery assembly with a flexible heat exchanger according to the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application are described in detail below with reference to the accompanying drawings, in which: unless conflicting, the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other.

[0016] 1-2 show a flexible heat exchanger, which includes a flexible substrate 12 and a plurality of pipes 11, and the plurality of pipes 11 are arranged in parallel on the flexible substrate 12 to form a set of pipes. The pipes 11 are preferably metal pipes, and may be circular or screw pipes. A protective layer may be further wrapped around the outside of the pipes 11, and the protective layer may be a plastic layer, for example, a PVC plastic having high heat resistance up to 120 degrees Celsius. The equivalent diameter of the pipes may be a small inner diameter of 0.1-2 mm, and preferably, the inner diameter is 0.2-1.0 mm, for example, 0.4 mm. The smaller the inner diameter, the thinner the tube wall of the heat exchanger, which has higher flexibility, is easier to fold, transport and install, and can have a larger heat exchange area. The flexible substrate 12 uses an organic material with good thermal conductivity, such as acrylic or other modified materials. The thickness of the flexible substrate 12 is 10 mm or less, and may be, for example, 3-6 mm, or even 1-2 mm. The smaller the thickness, the more the thermal resistance of the metal tube to conduct heat can be reduced, while the flexibility of the heat exchanger is high and it can be transported as a roll. In addition, the flexible substrate can be easily attached to the leveled contact surface, which is less likely to form cavities and improves tactile comfort. The intervals between the multiple pipes 11 may be the same or different. The embedding depth of the pipes 11 in the flexible substrate 12 may be uniform or may not be uniform, and may even be partially exposed. When only one surface of the heat exchanger is used as the heat exchange surface, the embedding depth may not be uniform, that is, the surface with a relatively thin thickness is used as the heat exchange surface, which contributes to reducing the thermal resistance of the flexible substrate.

[0017] An inlet header 13 and an outlet header 14 are connected to both ends of the parallel pipe 11, and at least one flow-stop sheet 15 may be installed on the inlet header 13 and the outlet header 14 to ensure uniform flow of the heat exchange medium in the multiple pipes connected in parallel. The inlet header 13 and the outlet header 14 of the heat exchanger 1 are connected to a heat exchange unit 2 placed outdoors by a connecting pipe to form a heat exchange circulation system. The heat exchange unit 2 exchanges thermal energy of the outdoor air, and the heat exchange medium is transported to the heat exchanger 1 through the connecting pipe by the heat exchange medium, and the heat exchanger 1 exchanges heat with the internal air, thereby increasing the internal temperature. In the present application, multiple parallel pipes are installed between the inlet header and the outlet header, and the heat exchange medium first flows into the inlet header, then passes through the parallel pipes and flows into the outlet header, and finally gathers and flows out from the outlet header, shortening the flow distance of the heat exchange medium, thereby reducing the energy loss and thermal resistance caused by the relatively long flow distance.

[0018] As shown in FIG. 3, the heat exchanger may be installed indoors and used as a floor heating heat exchanger, and the thickness of the heat exchanger may be 3-4 mm. Specifically, the flexible heat exchanger 1 is installed above the floor slab 4. In order to prevent the heat exchanger from transferring heat to the floor slab, a heat insulating layer 6 may be installed between the flexible heat exchanger 1 and the floor slab 4. In order to make it beautiful and comfortable, a decorative layer 5 may be installed above the flexible heat exchanger 1. The decorative layer may be a floor board or another buffer layer with a function of making it beautiful. In order to reduce the extrusion of the flexible heat exchanger, especially the piping, by indoor items, a spacer block may be installed between the decorative layer 5 and the insulating layer 6 or between the decorative layer 5 and the floor slab 4 to support the space occupied by the flexible heat exchanger. The inlet header 13 and the outlet header 14 may be installed at the corner of the wall in the room or on the wall body, thereby avoiding the inconvenient walking and being stepped on and damaged due to being located in the center of the floor slab.

[0019] As shown in FIG. 4, the heat exchanger may be further laid inside a wall or hung on a wall, and the thickness of the heat exchanger may be 1-2 mm. Specifically, the flexible heat exchanger 1 may be attached to the inner wall of a room. A heat insulating layer 6 may be installed between the flexible heat exchanger 1 and the wall to prevent the heat exchanger from transferring heat to the wall. A decorative layer 5 may be further installed on the outer wall of the flexible heat exchanger 1 to make it beautiful and comfortable. An inlet header 13 and an outlet header 14 may be installed in the corner of the wall in the room, or embedded in the wall. As will be understood by those skilled in the art, the heat exchanger of the present application may also be installed on the ground and the wall at the same time.

[0020] As shown in FIG. 5, when it is necessary to use multiple sets of pipes 11 spaced apart, the flexible substrate 12 between the multiple sets of pipes may further have multiple holes 16 for fixing the heat exchanger or for integrating the heat exchanger and the covering below or above the heat exchanger by passing through or pushing out through the holes. Take the case where the heat exchanger is installed on a wall as an example, the heat exchanger shown in FIG. 5 may be attached to the wall as a whole in the form of a mesh cloth, and then coated with cement mortar. The cement mortar passes through the holes and contacts the wall surface, so that the heat exchanger is firmly attached and fixed to the wall surface. In this case, the heat exchanger can not only perform the function of heat exchange, but also strengthen the strength and firmness of the wall, thus achieving a dual function.

[0021] It should be noted that the "outdoor heat exchange unit" mentioned in this application can be applied to other enclosed spaces in addition to being applied to buildings, for example, the flexible heat exchanger can be placed in a storage box or a battery pack. When the flexible heat exchanger is placed in a storage box, the flexible heat exchanger can be placed against the inner wall of the storage box, and then the inlet header and the outlet header can be connected to the outdoor heat exchange unit, so that a heating or refrigeration environment can be formed in the storage box. When the flexible heat exchanger is placed in a battery pack, the flexible heat exchanger can be wrapped around the outside of the battery, so that the two can form good thermal contact, and then the inlet header and the outlet header can be connected to the outdoor heat exchange unit, so that a refrigeration environment can be formed outside the battery.

[0022] As shown in FIG. 7, the flexible heat exchanger according to the present application can also be applied to a refrigeration system, which includes an indoor heat exchange unit 101, an outdoor heat exchange unit 102, and a pipeline 103 connecting them. The indoor heat exchange unit 101 exchanges heat with indoor air by using a refrigerant, the indoor air drops in temperature due to the refrigeration of the refrigerant, and the refrigerant rises in temperature due to the heat of the indoor air. The outdoor heat exchange unit 102 exchanges heat with outdoor air by using a refrigerant whose temperature is higher than the outdoor environmental temperature after compression, the outdoor air rises in temperature due to the heat, and the refrigerant drops in temperature due to the refrigeration. Compared with the forced convection of the indoor unit of an air conditioner, the refrigeration system using natural convection according to the present application has a smaller heat exchange coefficient of natural convection than forced convection, but the heat exchange area of ​​the indoor heat exchanger using natural convection is several times that of the heat exchanger of the indoor unit of the air conditioner, which can completely offset the effect of the smaller heat exchange coefficient and ultimately improve the heat exchange efficiency. Therefore, compared with the air conditioner, the refrigeration system using natural convection has obvious energy-saving advantages. As shown in Fig. 6, the heat exchanger using parallel piping according to this embodiment includes a plurality of heat exchange tubes 150 arranged in parallel, and has an equivalent diameter of 0.1 to 4 mm, preferably 0.2 to 2 mm, and may be, for example, 1 mm. An inlet header 151 and an outlet header 153 are provided at both ends of the plurality of parallel heat exchange tubes 150, respectively, and the heat exchange tubes 150 are mounted on a flexible substrate 152. The flexible heat exchanger according to the present application can be easily transported and installed, and has an inner diameter smaller than that of a general heat exchange tube, thereby increasing the specific surface area of ​​the heat exchange tube and thereby improving the heat exchange efficiency.

[0023] In the case of humid air, in order to accommodate different dew point temperatures under different indoor temperature and humidity conditions, a throttle valve can be installed in the circulation pipe of the heat exchange medium to control different evaporation temperatures of the heat exchange medium in the indoor heat exchanger, so that the surface temperature of the heat exchanger is higher than the dew point temperature of the humid air, and thus the formation of condensed water on the surface of the heat exchanger can be reduced. The increase in the surface temperature of the heat exchanger also improves the energy efficiency ratio of the outdoor heat exchange unit, but the temperature difference between the heat exchange temperature of the indoor heat exchanger and the environmental temperature decreases, and the heat exchange amount per unit time decreases, so that a longer start-up time is required to realize the required refrigeration amount replenishment, or the heat exchange area is increased to compensate. In order to prevent the condensed water generated during the refrigeration process from dripping into the room or the user's body, when the surface temperature of the heat exchanger is lower than the dew point temperature of the humid air, it is necessary to consider installing a condensed water receiving device.

[0024] As shown in FIG. 8, the indoor heat exchanger 111 is installed in a holder 115, and the holder 115 is attached to a building, for example, the floor slab 141. In order to prevent the condensed water from dripping, a fan 112 may be further installed in the holder 115 to suck the condensed water on the surface of the indoor heat exchanger 111 and quickly evaporate and dry it. The fan 112 transports the extracted water vapor to the condensed water collector 113, in which the humid air is further condensed into water, and the condensed water is discharged through the drain pipe 131. As shown in FIG. 9, in another embodiment, a decorative layer 114 is provided on the surface of the indoor heat exchanger 111, and the indoor heat exchanger 111, the decorative layer 114 and the floor slab 141 form a whole. In order to prevent the condensed water from dripping, a fan 112 may be further installed in the holder 115 to suck the condensed water on the surface of the decorative layer 114 and quickly evaporate and dry it. The humid air extracted by the fan is transported to the condensate collector 113, where it condenses into water, and the condensate is discharged to the outside of the room through a drain pipe 131.

[0025] In order to facilitate the collection or discharge of condensed water, the indoor heat exchanger 111 may be installed at an incline toward the fan 112. In order to facilitate the condensation of the moist air in the heat exchanger, a plurality of through holes may be arranged in the flexible substrate 152 of the indoor heat exchanger 111, and the through holes are arranged between the heat exchange tubes 150 and penetrate the flexible substrate 152. When the diameter of the through holes is 1 to 2 mm, or is smaller than 1 mm, a capillary phenomenon is formed, and the condensed water on the indoor heat exchanger can be tightly trapped without dripping due to the capillary action of the through holes, and the condensed water is exposed on the indoor heat exchanger due to the presence of surface tension. Furthermore, the number of through holes on the flexible substrate 152 is sufficient, and the flexible substrate has a micro-pore structure with open holes like a sponge, so that the condensed water formed on the surface of the indoor heat exchanger is sucked into the flexible substrate. The condensed water is distributed evenly on the flexible substrate, and the flexible base layer allows the condensed water to quickly transfer energy to the heat exchange tube through the good thermal conductivity of the condensed water, forming a uniform temperature field throughout the indoor heat exchanger and improving the heat exchange efficiency with the indoor air. The fan can extract the water adsorbed on the flexible substrate through suction action, preventing the condensed water on the indoor heat exchanger from falling off.

[0026] When the diameter of the through-hole on the flexible substrate 152 is larger than 2 mm, the indoor heat exchanger 111 can be attached to the floor slab 141, and the material for forming the decorative layer 114, such as cement, bonding cement, etc., can enter the through-hole, and after the decorative layer 114 is dried and hardened, the indoor heat exchanger 111 and the floor slab 141 form a whole. The outdoor heat exchange unit 102 includes a compressor, an outdoor heat exchanger, a throttle valve, a fan, a control member, etc., and the fan generates an airflow to generate forced convection between the outdoor heat exchanger and the outdoor air, so that the refrigerant in the indoor heat exchanger absorbs the refrigeration amount in the outdoor air and circulates and transports it indoors. The control member controls the throttle valve to make the temperature of the throttled and expanded refrigerant slightly higher than the humidity of the indoor air, but not so high that a large amount of condensed water is generated. When the humidity of the indoor air is relatively high, the fan may be started first to dehumidify the indoor air and reduce the condensation of water vapor on the indoor heat exchanger.

[0027] As shown in Fig. 10, the refrigeration system using natural convection according to the present invention may be further connected in parallel to a floor heating heat exchanger 104, that is, the indoor heat exchanger 101 and the floor heating heat exchanger are connected in parallel to an outdoor heat exchange unit 102 by a pipeline 103, and a group of control valves are installed in the outdoor heat exchange unit 102 to control the refrigeration system and the floor heating heat exchanger 104, respectively. When refrigeration is required, the heat exchange medium discharged from the compressor of the outdoor heat exchange unit 102 enters the outdoor heat exchanger to exchange heat with the outdoor air, and then the absorbed refrigeration amount is throttled and expanded to exchange heat with the indoor air in the indoor heat exchanger, thereby transferring the refrigeration amount to the indoor air, lowering the temperature of the indoor air, and then flows into the compressor, thus forming a circulation system. When it is necessary to heat the room, the heat exchange medium discharged from the compressor of the outdoor heat exchange unit 102 enters the indoor floor heating heat exchanger to exchange heat with the indoor air, the temperature of the indoor air increases due to the heat, the heat exchange medium flows into the throttle valve and is throttled and expanded to exchange heat with the outdoor air in the outdoor heat exchanger, and after absorbing heat, flows into the compressor, thus forming a heat exchange circulation.

[0028] FIG. 11 shows a floor heating and air conditioner interlocking control system, which includes an outdoor heat exchange unit 201, an indoor heat exchange unit 202, a floor heating heat exchanger 203, and a control assembly. The control assembly issues commands to realize the interlocking and coordinated operation of the control assembly, the outdoor heat exchange unit 201, the indoor heat exchange unit 202, and the floor heating heat exchanger 203. The control assembly includes a valve assembly 211 and a control panel 241, and the valve assembly 211 is connected to the control panel 241, and controls the opening and closing of the valve according to the control command issued by the control panel 241. The valve assembly 211 may be installed in the outdoor heat exchange unit 201, and forms the control of the refrigerant circulation piping entering and leaving the outdoor heat exchange unit, and the control signal of the valve assembly 211 is from the control panel 241 in the control assembly. Furthermore, the heat exchange system of the indoor heat exchange unit 202 is connected to the heat exchange system of the outdoor heat exchange unit 201 by the valve assembly 211. The floor heating heat exchanger 203 is connected to the heat exchange system of the outdoor heat exchange unit 201 by the valve assembly 211. The heat exchange system of the indoor heat exchange unit 202 and the floor heating heat exchanger 203 are connected in parallel, so that they can be interlocked and controlled by the valve assembly 211 to realize indoor refrigeration and heating. Note that the valve assembly 211 in Fig. 11 is merely schematic, and may be installed in two or more independent valves according to actual needs, for example, see Fig. 12 and Fig. 13.

[0029] Specifically, the outdoor heat exchange unit 201 includes a compressor 212, an outdoor heat exchanger 213, and an outdoor fan 214, and the indoor heat exchange unit 202 includes an indoor fan 221 and an indoor heat exchanger 222. The refrigerant supply and discharge pipes of the valve assembly 211 are respectively connected to the indoor heat exchanger 222 and the floor heating heat exchanger 203 of the indoor heat exchange unit 202, and the compressor 212 and the outdoor heat exchanger 213 in the outdoor heat exchange unit 201. The control panel 241 is further connected to a temperature sensor 242 and a signal sensor 243 provided in the indoor heat exchange unit 202. In addition to including the control panel 241, the temperature sensor 242, and the signal sensor 243, the control assembly can also be provided with a number of control elements to control the operation of components such as the compressor 212, the indoor fan 221, and the outdoor fan 214 in the outdoor heat exchange unit 201.

[0030] When the room needs to be refrigerated and cooled, as shown in Fig. 12, the refrigerant discharged from the compressor 212 of the outdoor heat exchange unit exchanges heat with the outdoor air through the outdoor heat exchanger 213, and is throttled and expanded in the indoor heat exchanger 222 of the indoor heat exchange unit through the throttle valve 215 to evaporate, absorb the heat in the room and cool the room, and then passes through the valve assembly 211 and flows to the compressor 212 to form a refrigeration circulation. The signal sensor 243 receives the signal and then feeds it back to the control panel 241, which further collects the signal of the temperature sensor 242 to judge the temperature threshold, and if the temperature requirement is met, issues a command to the valve in the valve assembly 211, or controls the operation of the compressor 212, the outdoor fan 214, and the indoor fan 221. The signal received by the signal sensor may be a remote control signal, a pressed signal, an open / close signal, etc. The valve assembly 211 controls the refrigerant discharged from the compressor 212 to enter the indoor heat exchanger 222 without entering the floor heating heat exchanger 203, so that the floor heating heat exchanger 203 does not operate. At the same time, the indoor fan 221 can be operated by the control panel 241 according to the control state of the valve assembly 211.

[0031] When the room needs to be heated and heated, as shown in Fig. 13, the refrigerant discharged from the compressor 212 of the outdoor heat exchange unit passes through the floor heating heat exchanger 203 to exchange heat with the indoor air, thereby heating the indoor air, and then is throttled by the throttle valve 215 to the outdoor heat exchanger 213 of the outdoor heat exchange unit, expands and evaporates, absorbs the heat in the outdoor air, and then flows into the compressor 212 to form a heating circulation. The signal sensor 243 receives the signal and then feeds it back to the control panel 241, and the control panel 241 further collects the signal of the temperature sensor 242 to judge the temperature threshold, and if the requirement is met, issues a command to the valve assembly 211 to control the valve, or controls the operation of the compressor 212 and the outdoor fan 214. The valve assembly 211 controls the refrigerant discharged from the compressor 212 to enter the floor heating heat exchanger 203 without entering the indoor heat exchanger 222, so that the indoor heat exchanger does not work. At the same time, depending on the control state of the valve assembly 211, the control panel 241 can realize that the indoor fan 221 is not operated.

[0032] The above-mentioned interlocking system of the present application is based on an existing indoor air conditioning unit, and can realize the interlocking control between the air source heat pump type floor heating and the indoor unit by simply connecting the piping of the floor heating heat exchanger to the valve in the air conditioning outdoor unit. There is no need to separately install an independent outdoor unit and connect it to the floor heating heat exchanger, thereby reducing costs and simplifying the overall structure. The heating operation of the floor heating and temperature sampling control are all performed by the indoor unit, reducing the number of additional sampling elements and control elements, and reducing costs. When performing refrigeration circulation, the valve assembly of the present application cuts off the connection between the heat exchange system of the outdoor unit and the floor heating heat exchanger, and when performing heating circulation, the valve assembly cuts off the connection between the heat exchange system of the outdoor unit and the heat exchange system of the indoor unit, thereby realizing the convenience of control and reducing the wind noise caused by the indoor fan, thereby improving the user experience.

[0033] 14 to 17 show schematic diagrams of the flexible floor heating heat exchanger 301 according to the present application installed in a room. The flexible floor heating heat exchanger 301 may be directly paved or attached to the floor slab 306. The flexible floor heating heat exchanger 301 includes multiple rows of parallel pipes 313 and a flexible substrate 311, the parallel pipes 313 are installed on the flexible substrate 311, headers 312 are provided at both ends of the parallel pipes 313, and the parallel pipes 313 are hermetically connected to the headers 312. The heat exchange medium flows in and merges with one of the headers, flows between the parallel pipes simultaneously, and then flows out and merges with the header.

[0034] The parallel pipes 313 may be embedded or embedded in the flexible substrate 311, or may be partially exposed from the flexible substrate 311. As can be understood by those skilled in the art, in order to meet the needs of heat conduction, the parallel pipes 313 and the flexible substrate 311 need to form good thermal contact. The header 312 may further be connected to an outdoor heat exchange unit, and the heating circulation is realized by the circulation of the refrigerant. The flexible floor heating heat exchanger 301 may further be provided with a decorative layer 304, which can protect the flexible floor heating heat exchanger 301 while making the indoor ground more beautiful. The decorative layer may select a material such as a flexible carpet or a relatively thin floor board so as to reduce the thermal resistance formed in the flexible floor heating heat exchanger. The decorative layer 304 may be laid separately from the flexible floor heating heat exchanger 301, or laid together with it, that is, the decorative layer 304 may be installed together with the flexible floor heating heat exchanger 301 or installed separately.

[0035] The header 312 of the flexible floor heating heat exchanger 301 has a relatively large size, which is not suitable for being directly embedded in the indoor personnel activity position, and may be installed adjacent to the wall 305. Due to the possibility of the width of the room being inconsistent, it is difficult to realize that all the headers 312 are close to the wall 305. If the headers 312 are directly placed on the floor slab 306 without protection, the headers have a relatively large diameter, which makes it uncomfortable for the indoor personnel to walk on and easy to trip over, and also damages the flexible floor heating heat exchanger. Therefore, in the present application, the headers can be attached to the bottom of the wall, for example, in the baseboard 302 for protection. As will be understood by those skilled in the art, if no baseboard is installed, the headers can also be embedded in the groove of the bottom wall or in a mounting box installed independently.

[0036] The flexible floor heating heat exchanger according to the present application has high heat exchange efficiency, so it does not need to be laid all over, but can be laid partially in a room. As shown in Fig. 14, the laying range of the flexible floor heating heat exchanger is within the range between the protective strips 303. The protective strips 303 are installed at the edge positions in the direction perpendicular to the header 312 of the flexible floor heating heat exchanger 301, thereby realizing the protection of the edge positions. That is, the protective strips are installed at the edge positions of the laying range of the flexible floor heating heat exchanger, which are the edge positions in the length direction of the flexible floor heating heat exchanger 301 in Fig. 14. Because the thickness of the flexible floor heating protector 301 is very thin, the protective strips 303 can be manufactured by extruding a metal profile or a broken metal plate or plastic to form a very thin protective structure. The protective strip 303 can be fixed to the floor slab 306 by means of fixing members 307 such as screws or adhesives to form an overall protective structure for the flexible floor heating heat exchanger, so that indoor people will not trip over it or damage it when walking. In this application, the metal profile refers to the profile used to preform the entire structure, while the broken metal plate refers to the metal plate broken to form a two-layer plate structure, and as will be understood by those skilled in the art, both are different members and have the meanings that can be generally understood.

[0037] As shown in Figures 15-16, the installation length of the flexible floor heating heat exchanger may be greater than the length of the indoor space, and the flexibility of the flexible floor heating heat exchanger may be fully utilized, and the excess dimension may be folded and surrounded and hidden within the baseboard 302. The header of the flexible floor heating heat exchanger has a number of connection points connected to the piping 313. If the refrigerant leaks, the leaking point can be found simply by removing the baseboard and inspecting, and repair and maintenance can be easily performed. In order to further protect the flexible floor heating member, a protective cover 314 may be further provided to cover the header 312, thereby forming a strong whole at the end of the header 312, the piping 313 and the flexible base layer 311. The protective cover 314 may be made of a flexible and heat-resistant organic material such as silicone rubber, and the connection may be strengthened by screws or the like, making it easy to form a temporary fastening structure.

[0038] The flexible floor heating heat exchanger has efficient heat exchange capacity, and can meet the heat exchange needs by only partially paving the room, so that it can be easily installed in the occupied space without removing the fixed facilities inside the room, and the flexible floor heating heat exchanger can also be bent and installed according to actual needs. The present application may also install the header at the bottom of the wall, for example in the baseboard, for protection, and further install a protective strip on the side edge paved over the heat exchanger to prevent interference with the activities of personnel in the room and avoid damage to the heat exchanger, and the header can be installed in the baseboard for easy repair and maintenance. The present application may also install a protective cover on the header, so that the header, piping and flexible base layer form a strong whole at the end, and the protective cover may further be connected with fasteners to strengthen the connection to form a whole assembly mechanism.

[0039] JPEG0007627511000001.jpg86170JPEG0007627511000002.jpg32170

[0040] 18-19 further show schematic diagrams of the flexible heat exchanger according to the present application being used in a battery pack or battery assembly. The battery assembly includes at least one battery pack arranged in parallel, the battery pack includes at least one battery 401, and a flexible heat exchanger 403 is wrapped around the outside of the battery pack. The flexible heat exchanger 403 and the outside of the battery pack may be bonded with a thermally conductive adhesive 402, or the flexible heat exchanger 403 may be directly wrapped around the outside of the battery pack, in which case heat is dissipated mainly by the way of heat conduction. In another embodiment, the flexible heat exchanger 403 may be further laid on the inner wall of the battery compartment, and then the battery assembly is placed in the battery compartment. The heat dissipated from the battery assembly is transferred to the air inside the battery compartment by thermal convection, and then the heat in the air inside the battery compartment is transferred by the flexible heat exchanger.

[0041] The first header 404 and the second header 405 are connected to an external heat exchange assembly, and the temperature of the battery is reduced by circulating the heat exchange medium. When there are two or more sets of batteries, multiple inlet headers may be connected and multiple outlet headers may be connected, and then each may be connected to a heat dissipation unit outside the battery pack to realize refrigeration circulation of the heat exchange medium. As shown in FIG. 19, the first headers 404 of multiple sets of batteries may be connected, and the second headers 405 of multiple sets of batteries may be connected, and then each may be connected to the inlet and outlet of the heat exchanger of the external heat dissipation unit. As shown in FIG. 19, each battery pack arranged in parallel is one row, and as will be understood by those skilled in the art, two rows of batteries may be one set, and a flexible heat exchanger is not installed outside the one row of batteries between two adjacent battery packs wrapped with the flexible heat exchanger, and as will be understood by those skilled in the art, a flexible heat exchanger may be installed outside each set of batteries. That is, the flexible heat exchangers according to the present application may be installed at intervals or continuously. The flexible heat exchanger of the present application can be tightly attached to the surface of a battery, adapt to the undulating changes of the battery surface, improve the heat exchange efficiency of the battery, increase the service life and safety of the battery, and is easy to fold, package, transport and install. It can greatly increase the specific surface area of ​​the heat exchange tube, improve the heat exchange efficiency, reduce the amount of material used, and reduce the manufacturing and installation costs.

[0042] The above are the embodiments disclosed in the present application, but the above contents are merely used to facilitate understanding of the present application, and are not intended to limit the present application. Those skilled in the art may make any modifications and changes to the embodiments and details without departing from the spirit and scope disclosed in the present application, but the patent protection scope of the present application should still be subject to the scope limited by the appended claims.

Claims

1. 1. A heat exchange system having a flexible heat exchanger, comprising: The flexible heat exchanger has a thickness of 1 mm or more and 4 mm or less, and comprises a flexible substrate and a plurality of metal pipes having a diameter less than or equal to the thickness, the plurality of pipes are arranged in parallel on the flexible substrate, and an inlet header and an outlet header are connected to both ends of the pipes, respectively, and the heat exchange system further comprises an outdoor heat exchange unit, the outdoor heat exchange unit is connected to the inlet header and the outlet header, respectively, and the heat exchange medium from the outdoor heat exchange unit flows into the inlet header and merges with the outlet header via the plurality of pipes to form a circulating heat exchange system.

2. The heat exchange system of claim 1, characterized in that the flexible heat exchanger is installed above the floor slab, the inlet header and the outlet header are installed at the bottom position of the wall, a bent portion is formed at the end of the flexible heat exchanger, and a protective cover is provided to cover the outside of the inlet header and the outlet header.

3. The heat exchange system according to claim 2, characterized in that a protective strip is provided at the edge positions of the flexible heat exchanger, and the protective strip is fixed to the floor slab by a fixing member or attached to the floor slab.

4. The heat exchange system according to claim 3, characterized in that an insulating layer is installed between the flexible heat exchanger and the floor slab, and a decorative layer is installed above the flexible heat exchanger.

5. The heat exchange system according to claim 1 , wherein the flexible heat exchanger is mounted on a wall, and a thermal insulation layer is provided between the flexible heat exchanger and the wall.

6. 2. The heat exchange system of claim 1, wherein the flexible heat exchanger comprises a plurality of sets of piping spaced apart from one another, and holes are provided in the flexible substrate between the sets of piping.

7. 2. The heat exchange system of claim 1, wherein the flexible heat exchanger is installed within a battery assembly, the battery assembly comprising at least one battery pack arranged in parallel, the battery pack comprising at least one battery, and the flexible heat exchanger is installed outside the battery pack.

8. 8. The heat exchange system according to claim 7, wherein a thermally conductive adhesive is provided between the flexible heat exchanger and the exterior of the battery pack, or the flexible heat exchanger is directly installed on the exterior of the battery pack or on the inner wall of a battery compartment of the battery assembly.

9. The heat exchange system according to claim 7 or 8, characterized in that the battery assembly comprises two or more battery packs, and the flexible heat exchanger is installed in series with the battery packs or at intervals between the battery packs.

10. The heat exchange system of claim 9 , wherein each of the battery packs comprises one or two rows of batteries.

11. A refrigeration system using natural convection, comprising an indoor heat exchange unit, an outdoor heat exchange unit, and a pipeline connecting them, The indoor heat exchange unit is equipped with a flexible heat exchanger having a thickness of 1 mm or more and 4 mm or less, and is installed on a ceiling panel or wall surface of a building, and is equipped with a plurality of parallel metal heat exchange tubes and a flexible substrate having a diameter equal to or less than the thickness, an inlet header and an outlet header are provided at both ends of the parallel heat exchange tubes, respectively, and the heat exchange tubes are installed on the flexible substrate.

12. The refrigeration system according to claim 11, wherein the indoor heat exchange unit further comprises a condensate receiver.

13. 13. The refrigeration system of claim 12, wherein the condensate receiver comprises a holder and a fan, the flexible heat exchanger is mounted in the holder, the holder is mounted to a building, and the fan is mounted to the holder.

14. The refrigeration system of claim 12, further comprising a decorative layer on the surface of the flexible heat exchanger, the flexible heat exchanger, the decorative layer and the ceiling or wall surface of the building forming a whole, the condensate receiving device comprising a holder and a fan, the holder being attached to the building, and the fan being attached to the holder.

15. The refrigeration system of claim 11, wherein the flexible substrate is provided with a plurality of through holes, the through holes extend through the flexible substrate, and the diameter of the through holes is 1-2 mm or less than 1 mm.

16. 12. The refrigeration system according to claim 11, wherein the outdoor heat exchange unit comprises an outdoor heat exchanger and a throttle valve, the throttle valve being disposed between the outdoor heat exchanger and the flexible heat exchanger.

17. A heat exchange system comprising a refrigeration system and a floor heating heat exchanger, The refrigeration system is the refrigeration system according to claim 11, characterized in that the floor heating heat exchanger and the indoor heat exchange unit are connected in parallel to the outdoor heat exchange unit.

18. The heat exchange system of claim 17, further comprising a valve assembly, wherein the heat exchange system of the indoor heat exchange unit is connected to the heat exchange system of the outdoor heat exchange unit by the valve assembly, the floor heating heat exchanger is connected to the heat exchange system of the outdoor heat exchange unit by the valve assembly, the heat exchange system of the indoor heat exchange unit and the floor heating heat exchanger are connected in parallel to the heat exchange system of the outdoor heat exchange unit, and the refrigerant supply and discharge piping of the valve assembly is respectively connected to the heat exchanger of the indoor heat exchange unit, the floor heating heat exchanger, and the compressor and outdoor heat exchanger in the outdoor heat exchange unit.

19. The heat exchange system of claim 18, characterized in that when performing refrigeration circulation, the valve assembly cuts off the connection between the heat exchange system of the outdoor heat exchange unit and the floor heating heat exchanger, and when performing heating circulation, the valve assembly cuts off the connection between the heat exchange system of the outdoor heat exchange unit and the heat exchange system of the indoor heat exchange unit.

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