Heat exchange system and building with indoor natural convection heat exchanger

Abstract

The present application relates to a heat exchange system and a building with an indoor natural convection heat exchanger. The heat exchange system includes a natural convection heat exchanger and an outdoor unit, and the natural convection heat exchanger and the outdoor unit are connected by a first pipeline; a distance of more than 10 mm is provided between the natural convection heat exchanger and the wall. The present application has high heat exchange efficiency, can quickly heat the indoor temperature to the set temperature, and has a short waiting time, thereby improving the user experience.

Description

Technical Field

[0001] The present application relates to a heat exchange system and a building with an indoor natural convection heat exchanger. Background Art

[0002] The most common way of air-energy heating is air conditioning, but the hot air from the air conditioner will generate wind noise, and it is easy to gather on the indoor ceiling, which will cause the room to be warm on the top and cold on the bottom, and the human body is very uncomfortable. Floor heating is to arrange heat exchange pipes on the floor of the house. The heat exchange medium circulates in the heat exchange pipes to heat the floor, and the heat is naturally transferred from the floor to the air in the house by convection. The heat exchange medium in the heat exchange pipe can be water or refrigerant. The water can be heated to increase its temperature, or it can use the reverse Carnot cycle mechanism to achieve heat exchange between the house and the inside through compression refrigeration and heat exchange. In summer, the forced convection method of the indoor unit on the top of the house blowing cold air can be used to cool the house, and in winter, the natural convection method of the pipe heat exchanger in the house floor can be used to heat the house.

[0003] CN220119492U discloses a linkage control system of floor heating and air conditioning, including an outdoor unit, an indoor unit, a floor heating heat exchanger and a control component, the control component includes a valve component, the heat exchange system of the indoor unit is connected to the heat exchange system of the outdoor unit through the valve component, the floor heating heat exchanger is connected to the heat exchange system of the outdoor unit through the valve component, and the heat exchange system of the indoor unit and the heat exchange system of the floor heating heat exchanger are connected in parallel to the heat exchange system of the outdoor unit. CN220229400U discloses a heat exchange system integrated with a building and a building having the heat exchange system. The heat exchange system 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 a connecting pipe, the outdoor heat exchanger is independently arranged from the compressor unit, and the outdoor heat exchanger is a natural convection heat exchanger. The indoor heat exchanger is a natural convection floor heating heat exchanger or is hung on the inner wall or buried in the inner wall, or the indoor heat exchanger is a forced convection air conditioning form, or the indoor heat exchanger is in the form of an air source water heater. In the above patents, the indoor heat exchanger needs to be buried in the building, which will cause great troubles in construction and maintenance. At the same time, since the heat exchange tube is either buried inside the main body of the building or closely fits the building, the heat exchange efficiency of the heat exchange tube is reduced, and the efficient natural convection of indoor hot air cannot be achieved, and the waiting time for heat exchange to the required temperature is long.

[0004] Therefore, there is a need in the prior art for a method that utilizes indoor natural convection to achieve energy saving and no wind noise, while also achieving the purpose of simple installation and quick maintenance. Utility Model Content

[0005] The purpose of the present application is to provide a heat exchange system with an indoor natural convection heat exchanger, which can heat the indoor air on the vertical planes on both sides of the natural convection heat exchanger by setting a certain distance between the natural convection heat exchanger and the wall, thereby improving the heating efficiency; and by setting a certain distance between the natural convection heat exchanger and the floor, so as to form indoor air circulation, so that the cold air sinks and the hot air rises. The present application can quickly heat the indoor temperature to the set temperature with a short waiting time, thereby improving the user experience.

[0006] The present application relates to a heat exchange system with an indoor natural convection heat exchanger, comprising a natural convection heat exchanger and an outdoor unit, wherein the natural convection heat exchanger and the outdoor unit are connected via a first pipeline; a distance of more than 10 mm is provided between the natural convection heat exchanger and a wall.

[0007] Among them, the distance between the bottom of the natural convection heat exchanger and the ground can be greater than 10 mm, and the indoor unit is connected to the outdoor unit through a second pipeline; the outdoor unit is installed with a valve assembly, and the valve assembly is respectively connected to the first pipeline and the second pipeline; a flexible heat exchanger is laid on the indoor rest platform, and the pipeline of the flexible heat exchanger is connected to the outdoor unit; the flexible heat exchanger is connected to the natural convection heat exchanger in parallel or in series; a blowing device is provided on the natural convection heat exchanger; the natural convection heat exchanger includes an inlet pipe and an outlet pipe, and a plurality of heat exchange pipelines are provided between the inlet pipe and the outlet pipe; the heat exchange pipeline adopts a microchannel flat tube or a metal round tube; and fins are provided on the heat exchange pipeline.

[0008] The present application also relates to a building, comprising the heat exchange system as described above.

[0009] The present application forms a chimney effect between the natural convection heat exchanger and the wall by setting a distance of more than 10mm between the natural convection heat exchanger and the wall. The air in this distance rises along the space with a vertical slope, causing the phenomenon of enhanced air convection, thereby strengthening the heat exchange of the natural convection heat exchanger. In order to form a chimney effect on the surface of the natural convection heat exchanger facing away from the wall, that is, the outer side, a parallel plate surface greater than 10mm but less than 100mm from the outer side surface can be added. This parallel plate surface can be used as a cover, which can not only guide hot air, but also protect the natural convection heat exchanger, making the natural convection heat exchanger more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an implementation method of the heat exchange system of the present application.

[0011] Figure 2 It is another embodiment of the heat exchange system of the present application.

[0012] Figure 3This is another implementation of the heat exchange system of the present application.

[0013] Figure 4 It is a schematic diagram of an indoor heat exchanger of the heat exchange system of the present application.

[0014] Figure 5 is a schematic diagram of an indoor heat exchanger provided with a casing. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail in conjunction with the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict. The embodiments of the present application are only described by taking indoor heating as an example. Those skilled in the art understand that the same structure can also be used for indoor cooling. It is only necessary to change the refrigerant flow direction in the outdoor unit and add a device to receive condensed water or reduce the indoor air humidity through dehumidification equipment.

[0016] In one embodiment, Figure 1 As shown, a heat exchange system with an indoor natural convection heat exchanger according to the present application includes a natural convection heat exchanger 1 and an outdoor unit 3, and the natural convection heat exchanger 1 and the outdoor unit 3 are connected by a first pipeline 13. The outdoor unit 3 may include a compressor, a fan and an outdoor heat exchanger, which can be implemented by existing technology and will not be repeated. The natural convection heat exchanger 1 maintains a distance of more than 10 mm from the wall 4 so that the natural convection heat exchanger can heat the indoor air on two vertical planes on both sides thereof. The bottom of the natural convection heat exchanger 1 needs to be more than 10 mm from the ground to form indoor air circulation, that is, cold air sinks and hot air rises. When the house needs to be heated in winter, the refrigerant circulates in the natural convection heat exchanger 1 and the outdoor unit 3 through the first pipeline 13. The compressor, fan and outdoor heat exchanger in the outdoor unit 3 absorb heat from the outdoor environment and circulate the heat to the natural convection heat exchanger 1, and heat is exchanged with the indoor air by natural convection, thereby achieving indoor air heating.

[0017] In another embodiment, if Figure 1As shown, a heat exchange system with an indoor natural convection heat exchanger according to the present application includes a natural convection heat exchanger 1, an indoor unit 2 and an outdoor unit 3, wherein the natural convection heat exchanger 1 and the outdoor unit 3 are connected via a first pipe 13, and the indoor unit 2 and the outdoor unit 3 are connected via a second pipe 23. When the house needs to be heated in winter, the same principle as above is adopted for indoor heating. When cooling is required in summer, the refrigerant circulates in the indoor unit 2 and the outdoor unit 3 via the second pipe 23. The compressor, the fan and the outdoor heat exchanger in the outdoor unit 3 absorb the cold from the outdoor environment, circulate the cold to the indoor unit 2, and perform heat exchange with the indoor air by forced convection, thereby achieving indoor air cooling.

[0018] In both heating and cooling states, a valve assembly can be installed on the outdoor unit 3, and the first pipeline 13 is connected to the second pipeline 23. When heating in winter, the valve assembly distributes the refrigerant to flow directly to the natural convection heat exchanger 1 instead of the indoor unit 2; when cooling in summer, the valve assembly distributes the refrigerant to flow directly to the indoor unit 2 instead of the natural convection heat exchanger 1.

[0019] Considering that there are covers on the indoor rest platform, the use of the above-mentioned natural convection heating method will cause the rest platform to heat up slowly, affecting the physical feeling of sitting and lying down. Therefore, in the preferred embodiment, Figure 3 As shown, a flexible heat exchanger 5 can be laid on the indoor rest platform 6, and the pipeline of the flexible heat exchanger 5 is connected to the outdoor unit 3. The flexible heat exchanger 5 and the natural convection heat exchanger 1 can be connected in parallel or in series. The flexible heat exchanger of the present application refers to a heat exchange tube with a smaller diameter, so that it can be flexible as a whole, rather than rigid, and a flexible heat exchanger in the prior art can be used. Figure 3 As shown, a blowing device 7 may be added to the natural convection heat exchanger 1 to enhance heat exchange and increase the heat exchange capacity of the heat exchanger.

[0020] like Figure 4As shown, the natural convection heat exchanger 1 of the present application includes an inlet pipe 11 and an outlet pipe 12, and a plurality of heat exchange pipes 10 are arranged between the inlet pipe 11 and the outlet pipe 12 so that the refrigerant can flow in parallel. Preferably, a baffle 14 can also be arranged in the inlet pipe 11 and the outlet pipe 12, and the baffle 14 can change the flow direction of the refrigerant in the heat exchange pipe 10 and further distribute the refrigerant in the heat exchange pipe 10, so that the refrigerant flowing in the heat exchange pipe 10 is evenly distributed. Heat dissipation fins can also be arranged in the heat exchange pipe 10 to increase the heat exchange efficiency. The heat exchange pipe 10 can adopt a microchannel flat tube or a metal round tube. When a microchannel flat tube is adopted, the surface formed by the multiple groups of channels in the microchannel flat tube can be parallel to the wall, or it can be perpendicular or at a certain angle. Similarly, when a metal round tube is adopted, the surface formed by the multiple round tubes can be parallel to the wall, or it can be perpendicular or at a certain angle. The natural convection heat exchanger can use straight pipes, serpentine pipes, or U-shaped pipes, etc., and fins can be added to the pipes to increase the heat exchange area. In order to adapt to the changes in the house type, the shape of the natural convection heat exchanger can be consistent with the changes in the wall shape. For example, at the corner of the wall, the natural convection heat exchanger can be bent at a certain angle to solve the problem of space occupied by the placement of the natural convection heat exchanger.

[0021] like Figure 5 As shown, a cover 8 can be added to the natural convection heat exchanger 1 of the present application, and the vertical plane of the cover 8 can form a 10-100mm channel with the outer side of the natural convection heat exchanger 1, and this channel can make the natural convection heat exchanger 1 form a chimney effect of heat exchange, strengthen the natural heat exchange, and make the natural convection heat exchanger 1 beautiful in appearance. Heat dissipation holes can be provided on the cover 8, for example, round holes, long waist holes or shutter structures can be punched on each surface, so that the airflow formed by the heat exchange between the indoor air and the natural convection heat exchanger flows according to the structure.

[0022] Another aspect of the present application also relates to a building, comprising the heat exchange system as described above.

[0023] Although the implementation methods disclosed in this application are as above, the contents described are only implementation methods adopted for facilitating the understanding of this application, and are not intended to limit this application. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be based on the scope defined in the attached claims.

Claims

1. A heat exchange system with an indoor natural convection heat exchanger, comprising a natural convection heat exchanger and an outdoor unit, wherein the natural convection heat exchanger and the outdoor unit are connected via a first pipeline; characterized in that: A distance of more than 10 mm is set between the natural convection heat exchanger and the wall.

2. The heat exchange system according to claim 1, characterized in that: The distance between the bottom of the natural convection heat exchanger and the ground is greater than 10 mm.

3. The heat exchange system according to claim 1 or 2, characterized in that: It also includes an indoor unit, which is connected to the outdoor unit through a second pipeline.

4. The heat exchange system according to claim 3, characterized in that: The outdoor unit is equipped with a valve assembly, and the valve assembly is connected to the first pipeline and the second pipeline respectively.

5. The heat exchange system according to any one of claims 1 to 2 and 4, characterized in that: A flexible heat exchanger is laid on the indoor rest platform, and the pipeline of the flexible heat exchanger is connected with the outdoor unit.

6. The heat exchange system according to claim 5, characterized in that: The flexible heat exchanger is connected in parallel or in series with the natural convection heat exchanger.

7. The heat exchange system according to any one of claims 1-2, 4 and 6, characterized in that: The natural convection heat exchanger is provided with a blowing device.

8. The heat exchange system according to any one of claims 1-2, 4 and 6, characterized in that: The natural convection heat exchanger comprises an inlet collecting pipe and an outlet collecting pipe, a plurality of heat exchange pipelines are arranged between the inlet collecting pipe and the outlet collecting pipe, and the heat exchange pipelines are microchannel flat tubes or metal round tubes.

9. The heat exchange system according to claim 8, characterized in that: A cover is provided outside the natural convection heat exchanger.

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

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