Cooperative control multifunctional heat exchange system

Abstract

The utility model relates to a cooperative control multifunctional heat exchange system. The cooperative control multifunctional heat exchange system comprises an outdoor unit, a first indoor unit, a second indoor unit, a third heat exchanger and a valve assembly, the first indoor unit is arranged in the upper area of the building, and the second indoor unit is arranged in the lower area of the building; the valve assembly comprises a first valve bank, a second valve bank, a third valve bank and a fourth valve bank, the first valve bank and the second valve bank are both communicated with an outdoor heat exchanger of the outdoor unit, and the first valve bank and the second valve bank are connected to the two ends of a first heat exchanger of the first indoor unit respectively; the first valve group is connected with a third valve group, and the second valve group is connected with a fourth valve group; the third heat exchanger is connected with a second heat exchanger of the second indoor unit in parallel, the third heat exchanger is connected to the third valve set and the fourth valve set, and the second heat exchanger of the second indoor unit is also connected to the third valve set and the fourth valve set.

Description

Technical Field

[0001] The present application relates to a multi-functional heat exchange system with collaborative control, which is applicable to the field of heat exchange technology. Background Art

[0002] Current air conditioners are becoming more and more intelligent, and generally have externally connected ports for convenient maintenance, such as a 485 interface, so that instruments can be connected to it during maintenance to read the operation data of the air conditioner to understand the actual operation state of the air conditioner and promptly find out existing problems. At the same time, there are many categories, models and manufacturers of various air conditioners, and there are differences in the control programs of air conditioners for each manufacturer. Therefore, the 485 interface on the air conditioner has become a common connection port for data communication with the air conditioner.

[0003] Since air conditioners adopt a standardized production mode, they cannot meet the personalized needs of different users. For example, when the air conditioner blows hot air in winter, the hot air is prone to flow towards the ceiling due to its low density, resulting in an insignificant temperature rise in the area 0.8 - 1.2 meters away from the floor slab. This area is exactly the area where users sit and lie, and the insignificant temperature rise easily causes a cold feeling. At the same time, the sensor for sensing the air temperature in the building is installed inside the indoor unit. Since the indoor unit itself is at a high place and the hot air circulates at the top, the sensor senses the temperature of the air flow at the top of the building as the building temperature, causing false shutdowns, so that the set temperature of the air conditioner differs greatly from the actual perceived temperature. Even in summer, the cold air blown by the air conditioner at a high place directly blows on the user's body, making the user feel icy cold and very uncomfortable. In the prior art, due to the above-mentioned unmet personalized needs of users, users will modify the installed air conditioners and add some components to meet the personalized heating and cooling needs. However, since each category and each model of air conditioner is different, how to achieve collaborative control of all existing air conditioners has become the key to meeting personalized improvements.

[0004] On the other hand, when the weather is relatively humid, when the air conditioner is used for refrigeration, the moisture in the air is easily condensed into water on the heat exchanger of the indoor unit, resulting in a very low humidity in the building; when the weather is relatively dry, when the air conditioner is used for heating, the air in the building is heated, causing the relative humidity of the air to drop, and it is easy to generate heat dryness. Therefore, the humidity adjustment of the air in the building is also very important, and an appropriate humidity is an important condition to ensure comfortable living. However, existing air conditioning equipment has basically not considered this aspect. In the current huge air conditioner stock market, if it is possible to achieve a more suitable temperature and humidity living environment in buildings equipped with air conditioners, it has broad commercial prospects. Summary of the Utility Model

[0005] The present application provides a multi-functional heat exchange system with collaborative control, which can control three different heat exchange components to achieve the switching of different heat exchange modes. The present application can also perform collaborative control on existing air conditioning equipment and floor heating equipment, and can also adjust the air humidity in a building.

[0006] The present application relates to a multi-functional heat exchange system with collaborative control, including an outdoor unit, a first indoor unit, a second indoor unit, a third heat exchanger preset on the ground, and a valve assembly; the first indoor unit is arranged in the upper area of the building, and the second indoor unit is arranged in the lower area of the building; the valve assembly includes a first valve group, a second valve group, a third valve group, and a fourth valve group, wherein both the first valve group and the second valve group are connected to the outdoor heat exchanger of the outdoor unit, and the first valve group and the second valve group are respectively connected to both ends of the first heat exchanger of the first indoor unit; the first valve group is connected to the third valve group, and the second valve group is connected to the fourth valve group; the third heat exchanger and the second heat exchanger of the second indoor unit are connected in parallel, the third heat exchanger is respectively connected to the third valve group and the fourth valve group, and the second heat exchanger of the second indoor unit is also respectively connected to the third valve group and the fourth valve group. Among them, the valve assembly controls the refrigerant flow direction to one of the first heat exchanger of the first indoor unit, the second heat exchanger of the second indoor unit, or the third heat exchanger.

[0007] In one embodiment, the outdoor heat exchanger of the outdoor unit is connected to port a of the first valve group, port a of the first valve group is connected to port b of the first valve group, port b of the first valve group is connected to the first heat exchanger, the first heat exchanger is connected to port b of the second valve group, port b of the second valve group is connected to port a of the second valve group, and port a of the second valve group is connected to the outdoor heat exchanger of the outdoor unit.

[0008] In another embodiment, the outdoor heat exchanger of the outdoor unit is connected to port a of the second valve group, port a of the second valve group is connected to port c of the second valve group, port c of the second valve group is connected to port a of the fourth valve group, port a of the fourth valve group is connected to port c of the fourth valve group, port c of the fourth valve group is connected to the third heat exchanger, the third heat exchanger is connected to port c of the third valve group, port c of the third valve group is connected to port a of the third valve group, port a of the third valve group is connected to port c of the first valve group, port c of the first valve group is connected to port a of the first valve group, and port a of the first valve group is connected to the outdoor heat exchanger.

[0009] In yet another embodiment, the second indoor unit further includes a water container, and part of the pipeline of the second heat exchanger is immersed in the water of the water container. The outdoor heat exchanger of the outdoor unit is connected to port a of the second valve group. Port a of the second valve group is connected to port c of the second valve group. Port c of the second valve group is connected to port a of the fourth valve group. Port a of the fourth valve group is connected to port b of the fourth valve group. Port b of the fourth valve group is connected to the second heat exchanger. The second heat exchanger is connected to port b of the third valve group. Port b of the third valve group is connected to port a of the third valve group. Port a of the third valve group is connected to port c of the first valve group. Port c of the first valve group is connected to port a of the first valve group. Port a of the first valve group is connected to the outdoor heat exchanger.

[0010] In yet another embodiment, the outdoor heat exchanger of the outdoor unit is connected to port a of the first valve group. Port a of the first valve group is connected to port c of the first valve group. Port c of the first valve group is connected to port a of the third valve group. Port a of the third valve group is connected to port b of the third valve group. Port b of the third valve group is connected to the second heat exchanger. The second heat exchanger is connected to port b of the fourth valve group. Port b of the fourth valve group is connected to port a of the fourth valve group. Port a of the fourth valve group is connected to port c of the second valve group. Port c of the second valve group is connected to port a of the second valve group. Port a of the second valve group is connected to the outdoor heat exchanger.

[0011] In yet another embodiment, the outdoor heat exchanger of the outdoor unit is connected to port a of the first valve group. Port a of the first valve group is connected to port c of the first valve group. Port c of the first valve group is connected to port a of the third valve group. Port a of the third valve group is connected to port c of the third valve group. Port c of the third valve group is connected to the third heat exchanger. The third heat exchanger is connected to port c of the fourth valve group. Port c of the fourth valve group is connected to port a of the fourth valve group. Port a of the fourth valve group is connected to port c of the second valve group. Port c of the second valve group is connected to port a of the second valve group. Port a of the second valve group is connected to the outdoor heat exchanger.

[0012] Preferably, it may further include an environmental sensor, and the environmental sensor is arranged within the height range of 0.6 - 1.2 meters inside the building; it further includes a control unit, and the control unit realizes zoning control for multiple spaces inside the building. The control unit further includes a man-machine dialogue device. Description of the Drawings

[0013] Figure 1 Showing a schematic diagram of an embodiment of the multi-functional heat exchange system of the present application.

[0014] Figure 2 Showing the first working mode of the multi-functional heat exchange system of the present application.

[0015] Figure 3Show the second working mode of the multi-functional heat exchange system of the present application.

[0016] Figure 4 Show the third working mode of the multi-functional heat exchange system of the present application.

[0017] Figure 5 Show the schematic diagram of the outdoor unit of the multi-functional heat exchange system of the present application.

[0018] Figure 6 Show the fourth working mode of the multi-functional heat exchange system of the present application.

[0019] Figure 7 Show the fifth working mode of the multi-functional heat exchange system of the present application.

[0020] Figure 8 Show the schematic diagram of the control mode of the multi-functional heat exchange system of the present application.

[0021] Figure 9 Show the schematic diagram of the control flow of the multi-functional heat exchange system of the present application.

[0022] Figure 10 Show the schematic diagram of the zoning within a building in one embodiment. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the present application more clear and understandable, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined arbitrarily with each other.

[0024] A multifunctional heat exchange system with collaborative control according to the present application includes an outdoor unit 1, a first indoor unit 2, a second indoor unit 3, a third heat exchanger 4 preset in a floor slab, a valve assembly 5, and a control unit 6. The outdoor unit 1 is installed outside a building 7. The outdoor unit 1 is connected to other components through connecting pipelines to achieve refrigerant cycle connection, and is connected to a power supply and an external communication connection port through connecting lines. The valve assembly 5 can be in the form of a valve box. The third heat exchanger 4 can be in the form of an existing floor heating heat exchanger, that is, the third heat exchanger 4 is laid in the concrete of a floor to make full use of the advantage of good heat preservation performance of the concrete layer. The first indoor unit 2 is installed in the upper area of the building 7, and forced convection heat exchange is carried out between the air in the building and the first indoor unit 2 by generating air flow through a fan provided inside to exchange heat with the heat exchanger. The second indoor unit 3 is usually set in the lower area of the building, preferably at a height lower than 1.2 meters. This is because, except in the standing situation, when a person is sitting or lying in the room, the activity area is generally in the height range of 0.6 - 1.2 meters, preferably in the height range of 0.8 - 1.0 meters. Those skilled in the art know that the above "upper area" and "lower area" are only relative, and there is no need to precisely define their specific height ranges, which can be specifically set or adjusted according to the space situation in the building. The control unit of the present application can, through the existing external communication connection port on the air conditioner, and through self-learning, master the operation rules, and then perform logical operations on the values of the air conditioner sensors already installed and the values of the sensors on the additional components, so as to automatically control the operation of the air conditioner, and at the same time reasonably control the operation of each heat exchange component by using peak-valley electricity prices to achieve low-cost operation.

[0025] The valve assembly 5 of the present application includes a first valve group 51, a second valve group 52, a third valve group 54, and a fourth valve group 54. Among them, both the first valve group 51 and the second valve group 52 are communicated with the outdoor heat exchanger 11 of the outdoor unit 1, and the first valve group 51 and the second valve group 52 are respectively connected to both ends of the first heat exchanger 22 of the first indoor unit 2. The first valve group 51 is connected to the third valve group 54, and the second valve group 52 is connected to the fourth valve group 54. The third heat exchanger 4 and the second heat exchanger 31 of the second indoor unit 3 are connected in parallel. The third heat exchanger 4 is respectively connected to the third valve group 54 and the fourth valve group 54, and the second heat exchanger 31 of the second indoor unit 3 is also respectively connected to the third valve group 54 and the fourth valve group 54. It should be noted that the above valve groups of the present application can be integrated, can be split, or can also be in the form of a component formed by multiple components, and are not limited to the form shown in the accompanying drawings of the specification. The ports of the valves mentioned below in the present application should be understood in a broad sense and are not limited to the form of openings provided on the valve body. According to actual needs, expansion valves or throttle valves or other necessary components can be provided between the valve groups according to actual needs.

[0026] As Figure 5As shown in the figure, the outdoor unit 1 mainly consists of several parts such as an outdoor heat exchanger 11, a fan 12, a controller 13, a valve assembly 14, and a compressor 15. These parts are all installed inside a casing 16, and an external communication connection port 131 is provided on the controller 13. To meet the heat exchange capacity and the size requirements for the first indoor unit 2, the second indoor unit 3, and the third heat exchanger when placed in a building, since the first indoor unit 2 adopts a forced convection heat exchange method, a finned tube heat exchanger can be used; the second heat exchanger 31 of the second indoor unit 3 can adopt a parallel pipeline heat exchanger, such as a microchannel heat exchanger. To enhance the heat exchange efficiency and effectively reduce the external dimensions, the second heat exchanger 31 of the second indoor unit 3 can also adopt a microchannel parallel pipeline heat exchanger. To increase the heat exchange area, fins can be added to the microchannel heat exchanger. To facilitate the cleaning of the dust accumulated on the heat exchanger during use, a heat exchanger made of microchannel flat tubes with self - contained fins can be used.

[0027] The second indoor unit 3 can be used as a condenser to heat the building 7, or as an evaporator to cool the building 7. The second indoor unit 3 can achieve heat exchange with the air inside the building 7 through natural convection heat exchange, or a fan 32 can be installed on the second indoor unit 3 to achieve heat exchange with the air inside the building 7 through forced convection. Since the third heat exchanger 4 is laid in the concrete layer of the floor of the building 7, a parallel pipeline heat exchanger can be used to reduce the flow resistance of the refrigerant in the pipe and increase the heat exchange area.

[0028] The outdoor unit 1 controls the flow direction of the refrigerant in the pipeline to the first heat exchanger 22 of the first indoor unit 2, the second heat exchanger 31 of the second indoor unit 3, or the third heat exchanger 4 through the valve assembly 4. When the refrigerant flows to the first heat exchanger 22 of the first indoor unit 2, there is no refrigerant circulation heat exchange in the second heat exchanger 31 of the second indoor unit 3 and the third heat exchanger 4; when the refrigerant flows to the second heat exchanger 31 of the second indoor unit 3, there is no refrigerant circulation heat exchange in the first heat exchanger 22 of the first indoor unit 2 and the third heat exchanger 4; when the refrigerant flows to the third heat exchanger 4, there is no refrigerant circulation heat exchange in the first heat exchanger 22 of the first indoor unit 2 and the second heat exchanger 31 of the second indoor unit 3. In this case, it is possible to use the first indoor unit at a high place to blow cold air in summer, and the cold air sinks to achieve indoor cooling; in winter, use the second indoor unit or the third heat exchanger 4 at a low place to generate hot air, and the hot air rises to achieve indoor heating and humidity adjustment.

[0029] When cooling down in summer, such as Figure 2As shown, the first heat exchanger 22 of the first indoor unit 2 is forced to circulate for refrigeration by the fan 21. The refrigerant of the outdoor unit 1 flows into port a of the first valve group 51 and flows out of port b of the first valve group 51, enters the first heat exchanger 22, exchanges heat with the indoor air forcibly, then flows out of the first heat exchanger 22, enters port b of the second valve group 52, and flows out of port a of the second valve group 52, and then flows back into the outdoor unit 1, forming a refrigeration heat exchange cycle to cool the air in the building 7.

[0030] When heating up in winter, as Figure 3 shown, one of the second indoor unit 3 placed at the lower part of the building and the third heat exchanger 4 embedded in the concrete floor slab layer of the building 7 can be selected to heat up the building. The refrigerant flows from the outdoor unit 1 to port a of the second valve group 52 and flows out of port c of the valve group, enters port a of the fourth valve group 54, and flows out of port c of the fourth valve group 54, enters the third heat exchanger 4, exchanges heat with the floor concrete layer and further exchanges heat with the air in the building, and then flows out of the third heat exchanger 4 to port c of the third valve group 53, flows from port a of the third valve group 53 to port c of the first valve group 51, and finally flows out of port a of the first valve group 51 to the outdoor unit 1, forming a refrigeration heat exchange cycle to heat up the air in the building.

[0031] When it is necessary to adjust the humidity in the building during summer refrigeration or winter heating, as Figure 4 shown, part of the pipeline of the second heat exchanger 31 of the second indoor unit 3 can be immersed in clean water. By heating the water with the refrigerant, the evaporation of the water is accelerated to meet the requirement of the appropriate humidity in the building, and the second indoor unit 3 can also provide heat to the interior of the building through heat exchange during winter heating. The refrigerant flows from the outdoor unit 1 to port a of the second valve group 52 and flows out of port c, enters port a of the fourth valve group 54, and flows out of port b of the fourth valve group 54 and enters the second heat exchanger 31. The second heat exchanger 31 can exchange heat with the immersed water and also with the air in the building. After heat exchange, it flows to port b of the third valve group 53, then flows from port a of the third valve group 53 to port c of the first valve group 51, and flows out of port a of the first valve group 51 to the outdoor unit 1, forming a refrigeration heat exchange cycle to heat up the air in the building or adjust the humidity.

[0032] As Figure 6As shown, the refrigerant flows from the outdoor unit 1 to port a of the first valve group 51, flows out from port c of the first valve group 51 and then flows to port a of the third valve group 53, flows out from port b of the third valve group 53, and flows into the second heat exchanger 31 of the second indoor unit to exchange heat with the air in the building, achieving the cooling of the air in the building. Under the forced convection cycle of the fan 33, this cooling effect will be more obvious. After heat exchange, the refrigerant flows to port b of the fourth valve group 54, and can flow from port a of the fourth valve group 54 to port c of the second valve group 52, and flows out from port a of the second valve group 52 and enters the outdoor unit 1, forming a heat exchange cycle to achieve the refrigeration and cooling of the second indoor unit 3 for the air in the building.

[0033] The third heat exchanger 4 can be used as a condenser to heat the building, or as an evaporator to cool the building. As Figure 7 shown, in another embodiment, the refrigerant flows from the outdoor unit 1 to port a of the first valve group 51 and flows out from port c of the first valve group 51, and then flows to port a of the third valve group 53, flows out from port c of the third valve group 53, and flows to the third heat exchanger 4 to exchange heat with the floor concrete layer in the building, and further exchanges heat with the air in the building through the floor tiles on the concrete layer, achieving the cooling of the air in the building. Under the forced convection cycle of the fan 33, this cooling effect will be more obvious. After heat exchange, the refrigerant flows to port c of the fourth valve group 54, and can flow from port a of the valve group to port c of the second valve group 52, and flows out from port a of the second valve group 52 and enters the outdoor unit 1, forming a heat exchange cycle to achieve the refrigeration and cooling of the third heat exchanger 4 for the air in the building. Although there is no refrigerant circulation in the heat exchanger of the second indoor unit 3, the fan 32 of the second indoor unit 3 can disturb the air on the floor slab, thereby forming a temperature area with a certain height suitable for the human feeling.

[0034] As Figure 8As shown in the figure, the control unit 6 is connected to the external communication connection port 131 on the outdoor unit 1 through the data line 151, and there is a terminal matching the external communication connection port 131 at the end of the data line 151. In this connection method, after one end of the data line is connected to the external communication connection port 131, a transmitter is installed at the other end, and it is further connected to the receiving module on the control unit 6 through a wireless method. At the same time, the control unit 6 can be provided with a network connection port or a wireless network connection module, and the control module 5 can be connected to a PC or mobile devices such as mobile phones and tablets, so as to achieve remote control. Through the data line 151 connected to the external communication connection port 131, the control unit 6 can read the operating conditions of the outdoor unit 1 and the first indoor unit 2, such as parameters such as temperature, humidity, and frequency, master the operating rules of the outdoor unit 1 under different operating requirements through the self-learning mode, and realize the preservation of records. According to the personalized needs of users, an operating logic is formed in the control unit 6, and the operating rules of the air conditioner and the personalized operating logic relationship are coordinated for operation. Preferably, a man-machine dialogue device 152 is provided on the control unit 6, which can be a button or a touch screen, or a remote control can be used to control it. For the convenience of operation, the man-machine dialogue device 152 on the control unit 6 can be separated into a separate module and placed at a place easily accessible to the user, and the signal transmission between the module and the control unit 6 is realized through wireless transmission. The control unit 6 can further collect data on human behavior patterns and transmit them to the cloud for big data operation and processing, so as to provide a basis for power regulation by cutting peaks and filling valleys.

[0035] The second indoor unit 3 of this application can be provided with sensors 33 such as temperature, humidity, and pressure. In addition, the collaborative control system of this application is also provided with an environmental sensor 53 for sensing parameters such as temperature and humidity in the building and detecting the air gas content in the building. The parameters collected by these sensors are transmitted to the control unit 6 through the connection line, and the control unit 6 performs operations, analyzes, and logical judgments on these sensor parameters and the information parameters read by the external communication connection port 131, so as to control the operations of the outdoor unit 1, the first indoor unit 2, the second indoor unit 3, and the valve assembly 5 to meet the personalized needs of users.

[0036] When the first indoor unit 2 uses forced convection for heat exchange, the temperature sensor that controls the operation of the first indoor unit 2 is generally installed on the first indoor unit 2, and at the same time, the first indoor unit 2 is installed at a relatively high position in the building 7. When heating, the hot air blown by the forced convection of the first indoor unit 2 rises due to the rising of hot air and gathers at the top of the building 7. At this time, the temperature sensor of the first indoor unit 2 senses the temperature at the top of the building to control the operation. In the building, except when standing, the height of people is generally 1.2 meters when sitting and 0.8 meters when lying down, while children are generally only about 0.6 meters tall. Therefore, the temperature sensed by the temperature sensor at the ceiling is relatively high, and it may control the indoor unit to stop running, but the position where people are still has a very low temperature. Therefore, it is necessary to set the environmental sensor 53 at a height of 0.6 - 1.2 meters in the building, preferably at a height of 0.8 - 1.0 meters, to truly sense the temperature where people are located.

[0037] In this case, the method of using the first indoor unit 2 to blow hot air by forced convection heat exchange at a high place obviously cannot meet people's temperature requirements. When people's demand for heating temperature is relatively urgent, by increasing the required temperature in the building 7, due to the huge difference between the actual temperature and the required temperature in the building 7, and the outdoor unit 1 generally uses variable frequency control, at this time, the compressor 15 in the outdoor unit 1 will operate at a relatively high frequency, resulting in huge energy consumption while the heating effect is not obvious. In this case, by using the second indoor unit 3 located at the bottom of the building 7, it can follow the basic principle of hot air rising, and the hot air needs to pass through the height position where people are located, so that people feel relatively warm. And setting the environmental sensor 53 at a height of 0.6 - 1.2 meters in the building 7 just meets the temperature requirements of the human body. After the second indoor unit 3 exchanges heat, the environmental sensor 53 can truly and accurately sense, so that the compressor 15 in the outdoor unit 1 can run at a relatively low frequency for a long time, thus achieving energy saving.

[0038] At present, existing technologies such as air-source water floor heating or gas-fired water floor heating can achieve the heating of buildings, but their heating speed is slow. It generally takes more than 20 hours to heat up to the required temperature from the start. Due to the too long heating time, it is impossible to achieve energy saving through the control of the second indoor unit 3 by people, which is commonly known as behavioral energy saving. The second indoor unit 3 of the present application can adopt a microchannel heat exchanger, so it has high heat exchange capacity and can quickly heat up the temperature in the building. It only takes 0.5 - 1.5 hours to heat up to a temperature suitable for human perception. On the other hand, the third heat exchanger 4 is embedded in the floor slab of the building 7 and can heat the floor concrete. The concrete layer has good heat storage capacity. Therefore, even when the third heat exchanger 4 embedded in the floor slab stops operating, the floor concrete layer can still continuously release the stored heat energy into the building, so that the temperature drop trend in the building can be maintained very slowly for a long time, providing a technical basis for realizing management energy saving or behavioral energy saving. The management energy saving or behavioral energy saving described in the present application refers to achieving energy saving by reasonably adjusting the operation time period when the second indoor unit 3 or the third heat exchanger 4 is in the operation stage.

[0039] On this basis, the control unit 6 can be used to achieve zonal control of multiple spaces in the building 7. That is, when there are multiple partition intervals in the building 7, when there is no one activity and no heating is required in some partition intervals, these partition intervals can be closed. And when people need to enter and move in this partition interval, the rapid heating effect of the second indoor unit 3 can be used to achieve rapid heating. Such as Figure 8In the illustrated embodiment, the building 7 has a total of 4 partition intervals, namely 61 - 64. When a person is in interval 64 and does not enter intervals 61, 62, and 63 for a long time, the second indoor units 3 arranged in intervals 61, 62, and 63 can be turned off, while the second indoor unit 3 in interval 64 is turned on; and when a person needs to enter interval 61 from interval 64 and no longer enters interval 64, as long as 0.5 - 1.5 hours in advance, turn on the second indoor unit 3 in interval 61 and turn off the second indoor unit 3 in interval 64. Because the rapid heating of the second indoor unit 3 can raise the temperature of interval 61 to a comfortable temperature within 0.5 - 1.5 hours. Similarly, although the second indoor unit 3 embedded in the floor slab of interval 64 is turned off, due to the energy storage and heat storage function of the concrete layer in interval 64, it is sufficient to maintain the temperature in interval 64 from slowly decreasing within 0.5 - 1.5 hours while still being within the comfortable temperature range. In this case, the second indoor unit 3 is not turned on in the interval where no one enters, and the control unit 6 controls the operating frequency of the compressor of the outdoor unit 1 and the corresponding energy consumption, thereby achieving energy conservation. In addition, according to the implementation of tiered electricity prices in the country, in this energy-saving mode, while obtaining a comfortable living environment, the electricity consumption generally remains within the first or second tier of electricity price ranges and does not enter the third tier of electricity price range, thus achieving electricity savings and cost savings. Further, infrared induction sensors or radar scanning devices can also be set in each interval to sense whether there is human activity in the interval, so as to control whether to turn on the second indoor unit 3 in each interval through the control unit 6. This control method can also preset to turn on or off the second indoor unit 3 in a certain interval in advance.

[0040] Based on the technical functions of rapid heating and energy storage and heat storage, it is also possible to input the management energy-saving or behavior energy-saving mode in the man-machine dialogue device 52 of the control unit 6, that is, according to the requirements of the State Grid for peak-valley electricity periods, preset a program in the control unit 6 to make the heat exchange system operate at valley electricity to the greatest extent, thereby achieving objective economic benefits and reducing the use cost.

[0041] An example is as follows, the peak-valley electricity period table of a certain city in China:

[0042] 8:00 - 11:00, peak electricity;

[0043] 11:00 - 13:00, valley electricity;

[0044] 13:00 - 22:00, peak electricity;

[0045] 22:00 - 8:00, valley electricity.

[0046] Accordingly, a control program can be preset in the control unit 6 as follows:

[0047] From 7:00 to 8:00, the heat exchange system operates, the third heat exchanger 4 works, and the set temperature can be slightly higher to achieve heat storage and energy storage during off-peak electricity;

[0048] From 8:00 to 11:00, the heat exchange system stops operating, the third heat exchanger 4 does not work, and the heat stored in the concrete is used to release heat to maintain the temperature inside the building;

[0049] From 11:00 to 13:00, the heat exchange system operates, the third heat exchanger 4 works, and the set temperature can be slightly higher to achieve heat storage and energy storage during off-peak electricity;

[0050] From 13:00 to 16:00, the heat exchange system stops operating, the third heat exchanger 4 does not work, and the heat stored in the concrete is used to release heat to maintain the temperature inside the building;

[0051] From 16:00 to 19:00, the heat exchange system operates, and the third heat exchanger 4 works;

[0052] From 19:00 to 22:00, the heat exchange system stops operating, the third heat exchanger 4 does not work, and the heat stored in the concrete is used to release heat to maintain the temperature inside the building;

[0053] From 22:00 to 7:00, the heat exchange system operates, and the third heat exchanger 4 works;

[0054] The control unit 6 controls the operation of the outdoor unit according to the above control program for one day. Only 3 hours from 16:00 to 19:00 are in peak electricity operation, that is, only 1 / 4 of the time is in operation during peak electricity, while it is in operation during the low-cost off-peak electricity period, realizing off-peak conversion of heat energy and reducing the usage cost.

[0055] As Figure 9 shown, it shows an operation logic of the technical solution of this application. According to a collaborative control method for heat exchange of this application, it includes the following steps:

[0056] (1) Turn on the collaborative control system. While the outdoor unit is operating, the control unit turns on the control mode;

[0057] (2) Decide whether to turn on the first indoor unit according to the selected control mode;

[0058] (3) When the first indoor unit is not turned on, if it is decided not to turn on the second heat exchanger 33, the valve assembly controls the refrigerant flow to the third heat exchanger 4, and at the same time the control unit compensates the fault alarm mechanism to prevent false alarms. The indoor environment temperature is detected by a sensor that senses the indoor environment of the building, and it is judged whether it meets the threshold value. The sensor is set at a height of 0.6 - 1.2 meters indoors, preferably at 0.8 - 1.0 meters; after the indoor environment temperature meets the threshold value, the operation of the outdoor unit is stopped or the outdoor unit is controlled to operate at a low frequency; the sensor that detects the indoor environment temperature feeds back the detected temperature at regular intervals. When the indoor environment temperature does not meet the threshold value, the operation of the outdoor unit continues to be turned on, and the detection of the indoor environment temperature is carried out again.

[0059] If it is decided to turn on the second heat exchanger 33, the valve group flowing to the third heat exchanger 4 is closed, the valve group flowing to the second indoor unit is opened, the control unit compensates the fault alarm mechanism to prevent false alarms, the indoor environment temperature is detected by a sensor that senses the indoor environment of the building, and it is judged whether it meets the threshold value; after the indoor environment temperature meets the threshold value, the operation of the outdoor unit is stopped or the outdoor unit is controlled to operate at a low frequency; the sensor that detects the indoor environment temperature feeds back the detected temperature at regular intervals. When the indoor environment temperature does not meet the threshold value, the operation of the outdoor unit continues to be turned on, and the detection of the indoor environment temperature is carried out again.

[0060] (4) When the first indoor unit is turned on, the valve assembly controls the refrigerant flow to the first indoor unit, the indoor environment temperature is detected by a sensor that senses the indoor environment of the building, and it is judged whether it meets the threshold value. After the indoor environment temperature meets the threshold value, the operation of the outdoor unit is stopped or the outdoor unit is controlled to operate at a low frequency; if the detected indoor environment temperature does not meet the threshold value, it can be first judged whether it is caused by a fault. After eliminating the cause of the fault, the operation of the outdoor unit continues to be turned on, and the detection of the indoor environment temperature is carried out again.

[0061] Although the embodiments disclosed in the present application are as above, the content described is only an embodiment adopted for the convenience of understanding the present application and is not used to limit the present application. Any person skilled in the art within the technical field to which the present application pertains can make any modifications and changes in the form of implementation and details without departing from the spirit and scope disclosed in the present application. However, the scope of patent protection of the present application shall still be subject to the scope defined by the appended claims.

Claims

1. A multifunctional heat exchange system with coordinated control, characterized in that: The utility model comprises an outdoor unit, a first indoor unit, a second indoor unit, a third heat exchanger and a valve assembly preset on the ground; the first indoor unit is arranged in the upper area of ​​the building, and the second indoor unit is arranged in the lower area of ​​the building; The valve assembly includes a first valve group, a second valve group, a third valve group and a fourth valve group, wherein the first valve group and the second valve group are both connected to the outdoor heat exchanger of the outdoor unit, and the first valve group and the second valve group are respectively connected to the two ends of the first heat exchanger of the first indoor unit; the first valve group is connected to the third valve group, and the second valve group is connected to the fourth valve group; the third heat exchanger and the second heat exchanger of the second indoor unit are connected in parallel, the third heat exchanger is respectively connected to the third valve group and the fourth valve group, and the second heat exchanger of the second indoor unit is also respectively connected to the third valve group and the fourth valve group.

2. The multifunctional heat exchange system according to claim 1, characterized in that: The valve assembly controls the refrigerant to flow to one of the first heat exchanger of the first indoor unit, the second heat exchanger of the second indoor unit, or the third heat exchanger.

3. The multifunctional heat exchange system according to claim 1, characterized in that: The outdoor heat exchanger of the outdoor unit is connected to port a of the first valve group, port a of the first valve group is connected to port b of the first valve group, port b of the first valve group is connected to the first heat exchanger, the first heat exchanger is connected to port b of the second valve group, port b of the second valve group is connected to port a of the second valve group, and port a of the second valve group is connected to the outdoor heat exchanger of the outdoor unit.

4. The multifunctional heat exchange system according to claim 1, characterized in that: The outdoor heat exchanger of the outdoor unit is connected to port a of the second valve group, port a of the second valve group is connected to port c of the second valve group, port c of the second valve group is connected to port a of the fourth valve group, port a of the fourth valve group is connected to port c of the fourth valve group, port c of the fourth valve group is connected to the third heat exchanger, the third heat exchanger is connected to port c of the third valve group, port c of the third valve group is connected to port a of the third valve group, port a of the third valve group is connected to port c of the first valve group, port c of the first valve group is connected to port a of the first valve group, and port a of the first valve group is connected to the outdoor heat exchanger.

5. The multifunctional heat exchange system according to claim 1, characterized in that: Part of the pipeline of the second heat exchanger is immersed in water, the outdoor heat exchanger of the outdoor unit is connected with port a of the second valve group, port a of the second valve group is connected with port c of the second valve group, port c of the second valve group is connected with port a of the fourth valve group, port a of the fourth valve group is connected with port b of the fourth valve group, port b of the fourth valve group is connected with the second heat exchanger, the second heat exchanger is connected with port b of the third valve group, port b of the third valve group is connected with port a of the third valve group, port a of the third valve group is connected with port c of the first valve group, port c of the first valve group is connected with port a of the first valve group, and port a of the first valve group is connected with the outdoor heat exchanger.

6. The multifunctional heat exchange system according to claim 1, characterized in that: The outdoor heat exchanger of the outdoor unit is connected to port a of the first valve group, port a of the first valve group is connected to port c of the first valve group, port c of the first valve group is connected to port a of the third valve group, port a of the third valve group is connected to port b of the third valve group, port b of the third valve group is connected to the second heat exchanger, the second heat exchanger is connected to port b of the fourth valve group, port b of the fourth valve group is connected to port a of the fourth valve group, port a of the fourth valve group is connected to port c of the second valve group, port c of the second valve group is connected to port a of the second valve group, and port a of the second valve group is connected to the outdoor heat exchanger.

7. The multifunctional heat exchange system according to claim 1, characterized in that: The outdoor heat exchanger of the outdoor unit is connected to port a of the first valve group, port a of the first valve group is connected to port c of the first valve group, port c of the first valve group is connected to port a of the third valve group, port a of the third valve group is connected to port c of the third valve group, port c of the third valve group is connected to the third heat exchanger, the third heat exchanger is connected to port c of the fourth valve group, port c of the fourth valve group is connected to port a of the fourth valve group, port a of the fourth valve group is connected to port c of the second valve group, port c of the second valve group is connected to port a of the second valve group, and port a of the second valve group is connected to the outdoor heat exchanger.

8. The multifunctional heat exchange system according to any one of claims 1 to 7, characterized in that: It also includes an environmental sensor, which is arranged in a height range of 0.6-1.2 meters in the building.

9. The multifunctional heat exchange system according to any one of claims 1 to 7, characterized in that: It also includes a control unit, which realizes partition control of multiple spaces in the building.

10. The multifunctional heat exchange system according to claim 9, characterized in that: The control unit also includes a human-machine dialogue device.

Images