Heat exchange system fused with building and building with heat exchange system

Abstract

The invention relates to a heat exchange system fused with a building and the building with the heat exchange system. The heat exchange system is provided with an outdoor heat exchanger, a compressor unit and an indoor heat exchanger, the outdoor heat exchanger and the indoor heat exchanger are connected with the compressor unit through connecting pipes, and the outdoor heat exchanger is independent of the compressor unit and is a natural convection heat exchanger. Starting from the basic principle of refrigeration and heat exchange, the overall requirement for building attractiveness is considered at the same time, by changing the heat exchange mechanism of the outdoor heat exchanger, the existing form of an existing outdoor heat exchange unit is innovated, the overall requirement for building attractiveness is met, and energy conservation and noise reduction are achieved.

Description

Technical Field

[0001] This application relates to a heat exchange system integrated with a building and a building having the heat exchange system. Background Technology

[0002] An air source heat pump is an energy-saving device that transfers heat from a low-grade heat source (air) to a high-grade heat source. It extracts heat from the air through an outdoor heat exchanger in a refrigeration heat exchange system, then circulates the heat and releases it into the room through an indoor heat exchanger, thus raising the indoor temperature. Conversely, it extracts cold air from the air through an outdoor heat exchanger in a refrigeration heat exchange system, then circulates the heat and releases it into the room through an indoor heat exchanger, thus lowering the indoor temperature. When the cold air extracted from the air lowers the refrigerant temperature in the indoor heat exchanger to a very low level, such as below 0°C, the room essentially functions as a cold storage room for food. Furthermore, when the room is well-insulated, it can manifest as a refrigerator. When the heat extracted from the air is used to transfer heat to liquids, common forms include air source heat pump water heaters or ice makers. Household air conditioners and air source heat pump water heaters are particularly common examples.

[0003] Existing air conditioners and air-source heat pump water heaters require an outdoor heat exchange unit. Besides the heat exchanger, this typically includes a compressor, fan, valves, control system, and the necessary mounting frame. To maximize the heat exchange effect of the outdoor unit, the heat exchanger uses a fan to create airflow, forcing convection heat exchange between the outdoor air and the heat exchanger. To achieve good heat exchange efficiency (the ratio of acquired heat or cold energy to the system's required electrical power), the temperature of the refrigerant and the temperature difference between the indoor and outdoor environments must be a constant and optimal value. Therefore, the outdoor unit's heat exchange capacity primarily depends on the heat exchanger's heat exchange area and the forced convection heat transfer coefficient caused by the fan. However, significantly increasing the heat exchanger's heat exchange area often leads to increased material costs and more complex construction processes. To further increase the outdoor unit's heat exchange capacity, increasing the forced convection heat transfer coefficient is a relatively low-cost method, and increasing the fan speed is the most readily apparent solution.

[0004] In existing technologies, because the concept of forced convection is deeply ingrained in designers' minds, when faced with a need to increase heat exchange, technicians first think of increasing the fan speed to improve forced convection efficiency. However, increasing the heat exchange area to the point where no airflow equipment is required is not feasible in current technologies. This is due not only to design philosophy but also to the practical difficulties of construction. Specifically, if airflow equipment is eliminated and heat exchange is achieved solely through natural convection, an extremely large heat exchange area is needed to achieve the same heat exchange effect as forced convection. Such large-area, high-efficiency natural convection heat exchangers do not exist in current technologies due to limitations in construction processes and installation environments. Furthermore, traditional heat exchange tubes are made of rigid metal, making it impossible to install them over a large area as a whole with building walls. Even if installation were possible, they would be abandoned due to their unsightly appearance.

[0005] When using forced convection heat exchange technology, the outdoor unit's fan can cause significant air disturbance, leading to increased noise and vibration, resulting in noise pollution and a poor user experience. Furthermore, the installation of the outdoor unit can negatively impact aesthetics. For the sake of building aesthetics, multiple mounting platforms for the outdoor unit are sometimes installed on the exterior wall and covered with decorative items. These items further obstruct airflow and heat exchange in the outdoor unit, potentially causing malfunctions in the entire refrigeration and heat exchange unit. In addition, existing outdoor units, integrating compressors, fans, heat exchange pipes, and other components, are heavy and require installation at heights. Drilling holes in the building for installation not only poses safety hazards but can also damage the building. Under extreme weather conditions, limited space for heat dissipation in the outdoor unit can trigger thermal protection, causing the air conditioner to stop working. Summary of the Invention

[0006] This application starts from the basic principles of refrigeration and heat exchange, while also considering the overall aesthetic requirements of buildings. By changing the heat exchange mechanism of outdoor heat exchangers, it innovates the existing form of outdoor heat exchange units to achieve the requirements of overall aesthetics and realize energy saving and noise reduction.

[0007] This application relates to a heat exchange system integrated with a building, comprising an outdoor heat exchanger, a compressor unit, and an indoor heat exchanger. The outdoor heat exchanger and the indoor heat exchanger are connected to the compressor unit via connecting pipes. The outdoor heat exchanger is set independently of the compressor unit and is a natural convection heat exchanger.

[0008] The outdoor heat exchanger can be integrally installed on the exterior wall of the building or embedded within the exterior wall; the outdoor heat exchanger can be a flexible heat exchanger with a small pipe diameter of less than 4mm; the outdoor heat exchanger can include an inlet pipe and an outlet pipe, with multiple parallel pipes between the inlet pipe and the outlet pipe, the parallel pipes being arranged on a flexible uniformly distributed layer; the outdoor heat exchanger is connected to the compressor exhaust end of the compressor unit through the inlet pipe, and connected to the valve assembly inlet end of the compressor unit through the outlet pipe; the parallel pipes can be embedded or partially embedded in the uniformly distributed layer; multiple through holes can be formed in the uniformly distributed layer of the outdoor heat exchanger.

[0009] The compressor unit may consist of a compressor, a valve assembly, and a control system, with both the compressor and the valve assembly connected to the control system. One end of the indoor heat exchanger is connected to the valve assembly on the compressor unit via a connecting pipe, and the other end is connected to the compressor inlet on the compressor unit via a connecting pipe. The indoor heat exchanger may be a natural convection underfloor heating heat exchanger, or it may be suspended on or embedded in an interior wall. Alternatively, the indoor heat exchanger may be a forced convection air conditioning unit, or it may be an air source water heater.

[0010] This application also relates to a building equipped with a heat exchange system, which is a heat exchange system integrated with the building as described above.

[0011] The air-source heat exchange system integrated with a building according to this application, and the building having the heat exchange system, have the following technical advantages:

[0012] (1) This application integrates the outdoor heat exchanger with the wall, eliminating the fan and metal tube heat exchanger in the traditional outdoor unit, and retaining only the compressor unit, which greatly reduces the size and weight of the outdoor unit. It changes the forced convection heat exchange method used in the traditional outdoor unit to the natural convection heat exchange method, which changes the traditional design concept of outdoor units in the industry. It changes the traditional approach of improving the heat exchange coefficient to a completely new approach of greatly increasing the heat exchange area to improve the heat exchange efficiency.

[0013] (2) This application increases the heat exchange area by setting multiple parallel pipe heat exchangers with small diameters on a uniformly distributed layer with flexible characteristics. At the same time, due to its flexible characteristics, the flexible heat exchanger of this application can be suspended outside the wall or embedded in the building material of the wall, thus making outdoor natural convection heat exchange possible. This solves the process and construction problems that traditional heat exchangers cannot achieve large-area natural convection heat exchange, and also avoids the problem of automatic shutdown of thermal protection caused by traditional outdoor forced convection heat exchangers.

[0014] (3) Although the outdoor heat exchanger uses natural convection to exchange heat with the ambient air, the heat exchange coefficient is lower than that of forced convection. However, the heat exchange area of ​​the outdoor heat exchanger is much larger than that of the forced convection heat exchanger. Therefore, while making up for the decrease in heat exchange coefficient, the overall heat exchange is greatly improved, thus achieving the technical effect of energy saving and emission reduction.

[0015] (4) This application changes the traditional outdoor unit into a compressor unit with significantly reduced size and weight, avoiding the risks of high-altitude operations and damage to the building caused by drilling installation, reducing the labor intensity and psychological burden of compressor unit installers; avoiding the problem of vibration and noise generated by the fan, improving the living environment of indoor personnel; the miniaturization of the compressor unit allows the machine platform to be miniaturized or a machine platform can accommodate more compressor units, making the building facade more beautiful and neat. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the air source heat exchange system of this application.

[0017] Figure 2 This is a structural schematic diagram of the outdoor heat exchanger of this application.

[0018] Figure 3a This is a schematic diagram of one arrangement of the outdoor heat exchanger of this application.

[0019] Figure 3b This is a schematic diagram of another arrangement of the outdoor heat exchanger in this application.

[0020] Figure 4 This is a schematic diagram of the compressor unit of this application. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other. Those skilled in the art will understand that forced convection mentioned in this application refers to a heat exchange method that achieves convection by means of external force, such as a fan, while natural convection refers to a heat exchange method that achieves convection solely through its own structure without the need for external force. A natural convection heat exchanger refers to a heat exchanger that achieves heat exchange solely through natural convection without any airflow equipment.

[0022] This application discloses an air-source heat exchange system integrated with a building, such as... Figure 1As shown, the structure mainly consists of an outdoor heat exchanger 1, a compressor unit 2 (without a heat exchanger and fan), and an indoor heat exchanger 3. The compressor unit 2 is installed independently of the outdoor heat exchanger 1. The outdoor heat exchanger 1 is connected to the compressor unit 2 via a connecting pipe, and the indoor heat exchanger 3 is also connected to the compressor unit 2 via a connecting pipe. The outdoor heat exchanger 1 and the indoor heat exchanger 3 are located on the outer and inner sides of the building 4, respectively. The outdoor heat exchanger in this application is a natural convection heat exchanger.

[0023] like Figure 2 As shown, the outdoor heat exchanger 1 exchanges heat with the ambient air via natural convection. The outdoor heat exchanger 1 is a flexible, small-diameter heat exchanger with an inner diameter of less than 4 mm. The outdoor heat exchanger 1 of this application mainly consists of an inlet pipe 11, parallel pipes 12, a flexible uniformly distributed layer 13, an outlet pipe 14, and a baffle plate 15. The outdoor heat exchanger 1 is connected to the compressor discharge end of the compressor unit 2 via the inlet pipe 11 and to the valve assembly inlet end of the compressor unit 2 via the outlet pipe 14. The inlet pipe 11 and outlet pipe 14 have numerous through holes. Both ends of the parallel pipe 12 are sealed to the inlet pipe 11 and outlet pipe 14 through these through holes, ensuring that the refrigerant circulating in the heat exchanger does not leak. The equivalent inner diameter of the parallel pipe 12 can be 0.1-3.9 mm, preferably 0.5-2 mm, for example, 1.2 mm. The wall thickness of the parallel piping only needs to match the inner diameter of the pipe and be able to withstand the pressure of the refrigerant inside; for example, 0.01mm-1.0mm can be used. Using small-diameter parallel piping not only allows for a larger heat exchange area to improve heat exchange efficiency, but also makes it more flexible, facilitating folding, transportation, and packaging. Baffle 15 is used to achieve stratified heat exchange, further improving heat exchange efficiency.

[0024] The uniformly distributed layer 13 is in close contact with the parallel pipes. For example, the parallel pipes can be embedded or partially embedded within the uniformly distributed layer, creating a good heat conduction effect and making the temperature field between the connected parallel pipes more uniform, further resulting in a uniform temperature field throughout the heat exchanger. Preferably, the uniformly distributed layer 13 can be made of, for example, a metal film with a thickness of less than 0.5 mm or an organic material with good heat transfer properties, facilitating production, packaging, storage, transportation, and installation. The uniformly distributed layer 13 also keeps the multiple parallel pipes 12 in an orderly state, preventing them from becoming disordered during manufacturing, packaging, transportation, and installation. Due to its flexible characteristics, the uniformly distributed layer can be packaged in rolls, allowing for flexible fit with building materials when installed on building surfaces for better compatibility.

[0025] like Figures 3a-3bAs shown, the outdoor heat exchanger 1 can be installed on the exterior wall 41 of the building 4 by means of overall suspension, or it can be embedded inside the exterior wall of the building. When embedded inside the exterior wall of the building, in order to further form a good and solid integral with the exterior wall 41 of the building 4, multiple through holes 16 can be opened on the uniformly distributed layer 13 of the outdoor heat exchanger 1, and concrete can be passed through the through holes during installation to form a solid integral. When the outdoor heat exchanger 1 is suspended, it directly contacts the outdoor ambient air for direct natural heat exchange; when it is embedded, it indirectly exchanges heat with the outdoor ambient air through the concrete layer of the exterior wall. The former has a better heat exchange effect, but the aesthetic appearance and corrosion resistance of the heat exchanger are not as good as the latter. The latter has a slightly worse heat exchange effect, but the heat exchanger is embedded in the wall, and the overall aesthetic appearance and corrosion resistance are higher. Furthermore, the outdoor heat exchanger of the former can be installed simultaneously with the exterior wall decoration of the building, while the outdoor heat exchanger of the latter can be installed simultaneously with the exterior wall pouring of the building, reducing the danger of high-altitude operations and the uncontrollability of building quality caused by drilling holes in the exterior wall for installation in the existing technology.

[0026] Furthermore, considering that outdoor heat exchangers serve two purposes—extracting heat energy for indoor heating and extracting cold energy for indoor cooling—they can be installed on walls with high light transmittance when extracting heat energy for indoor heating, and on shady walls when extracting cold energy for indoor cooling. When there are both heating and cooling needs in different seasons, different outdoor heat exchangers can be installed on the light-transmitting and shady sides of the building's exterior walls. The refrigerant flow to the light-transmitting or shady outdoor heat exchanger can be switched via the control valve assembly on the compressor unit, thus meeting the indoor temperature requirements of different seasons and further achieving energy savings. Moreover, when the outdoor heat exchanger is suspended and used for indoor heating, a coating that promotes solar absorption can be applied to the uniformly distributed layer to further enhance the absorption and utilization of solar energy.

[0027] like Figure 4As shown, compressor unit 2 consists of compressor 21, valve assembly 22, control system 23, and frame 24, excluding fan and other air blowing equipment. Compressor 21 and valve assembly 22 are both connected to control system 23. Compared to existing outdoor compressor units, the heat exchanger and fan are eliminated, resulting in a smaller compressor unit 2 in terms of size. Vibration and noise generated by the fan are eliminated, and there is no automatic power-off due to air conditioning thermal protection. For each household in the building, multiple compressor units can be placed on an installation platform with good ventilation and a suitable distance from the outdoor heat exchanger 1 and indoor heat exchanger 3. The installation platform can be miniaturized and can accommodate multiple compressor units 2. Due to the miniaturization of the compressor units, the overall size and weight are reduced, thus greatly reducing the physical and psychological stress on installers during installation, thereby improving safety during the installation process.

[0028] The indoor heat exchanger 3 is installed inside the building 4, isolated from the external environment by the walls to prevent energy transfer from the outdoor heat exchanger to the indoor air from being lost. One end of the indoor heat exchanger 3 is connected to the valve assembly 22 on the compressor unit 2 via a connecting pipe, and the other end is connected to the air inlet of the compressor 21 on the compressor unit 2 via a connecting pipe. The main function of the indoor heat exchanger is to transfer the energy absorbed by the outdoor heat exchanger to the indoor air, thereby raising or lowering the indoor temperature. The indoor heat exchanger 3 can transfer energy into the room using natural convection, such as underfloor heating, or in conjunction with... Figure 2 The outdoor heat exchanger shown is of the same type, either suspended on the interior wall or embedded in the concrete layer of the cavity; it can also transfer energy to the room through forced convection, such as in an air conditioning system. At least one indoor heat exchanger 3 can be installed indoors. The control system 23 on the compressor unit 2 controls the valve assembly 22 to switch between different indoor heat exchangers, achieving different energy transfer paths. For example, when cooling is needed indoors in summer, the refrigerant in the system switches to a forced convection indoor heat exchanger, and a fan creates airflow to force convection through the indoor heat exchanger, thereby cooling the room; alternatively, no fan can be installed indoors, and cooling can be achieved through natural convection in the indoor heat exchanger. When heating is needed indoors in winter, the refrigerant in the system can switch to a floor heating heat exchanger, or a suspended or embedded heating heat exchanger, achieving heating through natural convection.

[0029] Furthermore, the aforementioned air-source heat exchange structure is not limited to heating and cooling indoor spaces. It is also applicable when the indoor heat exchanger is installed in a storage space with good insulation between the storage space and the ambient air. For example, the heat absorbed by the outdoor heat exchanger can be used to heat the water in the storage tank, thus functioning as an air-source water heater.

[0030] This application also relates to a building equipped with a heat exchange system integrated with the building as described above. All other components of the building can utilize existing technology; the improvement lies solely in the heat exchange system.

[0031] Although the embodiments disclosed in this application are as described above, the content is merely for the purpose of facilitating understanding of this application and is not intended to limit this application. Any person skilled in the art to which this application pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this application; however, the scope of patent protection of this application shall still be determined by the scope defined in the appended claims.

Claims

1. A heat exchange system integrated with a building, characterized in that, It has an outdoor heat exchanger, a compressor unit and an indoor heat exchanger. The outdoor heat exchanger and the indoor heat exchanger are connected to the compressor unit through connecting pipes. The outdoor heat exchanger is set up independently of the compressor unit. The outdoor heat exchanger is a natural convection heat exchanger.

2. The heat exchange system according to claim 1, characterized in that, The outdoor heat exchanger is either installed on the exterior wall of the building or embedded within the exterior wall of the building.

3. The heat exchange system according to claim 1 or 2, characterized in that, The outdoor heat exchanger is a flexible, small-diameter heat exchanger with an inner diameter of less than 4 mm.

4. The heat exchange system according to claim 3, characterized in that, The outdoor heat exchanger includes an inlet pipe and an outlet pipe, with multiple parallel pipes between the inlet pipe and the outlet pipe. The parallel pipes are arranged on a flexible, uniformly distributed layer. The outdoor heat exchanger is connected to the compressor exhaust end of the compressor unit through the inlet pipe and to the valve assembly inlet end of the compressor unit through the outlet pipe.

5. The heat exchange system according to claim 4, characterized in that, The parallel pipelines are embedded or partially embedded in the uniformly distributed layer.

6. The heat exchange system according to claim 4, characterized in that, Multiple through holes are formed on the uniformly distributed layer of the outdoor heat exchanger.

7. The heat exchange system according to claim 1 or 2, characterized in that, The compressor unit consists of a compressor, a valve assembly, and a control system, with both the compressor and the valve assembly connected to the control system.

8. The heat exchange system according to claim 7, characterized in that, One end of the indoor heat exchanger is connected to the valve assembly on the compressor unit via a connecting pipe, and the other end is connected to the compressor inlet on the compressor unit via a connecting pipe.

9. The heat exchange system according to claim 8, characterized in that, The indoor heat exchanger is a natural convection underfloor heating heat exchanger, or one that is suspended on or embedded in the interior wall; or it is a forced convection air conditioning unit; or it is an air source water heater.

10. A building equipped with a heat exchange system, characterized in that, The heat exchange system is a heat exchange system integrated with a building according to any one of claims 1-9.

Images