Building Geo-Energy Collection and Distribution System

Abstract

The present invention discloses a building ground energy collection and distribution system, which includes a number of ground energy air supply branch pipes. One end of each ground energy air supply branch pipe is correspondingly connected to a ground energy collector buried underground, and the other end of the ground energy air supply branch pipe is connected to a ground energy air supply main pipe, and the ground energy air supply main pipe is connected to a suction fan. The system also includes a number of condensate extraction branch pipes. One end of each condensate extraction branch pipe extends into the bottom of the corresponding ground energy collector, and the other end of the condensate extraction branch pipe is connected to a condensate extraction main pipe, and the condensate extraction main pipe is connected to a water pump. The present invention utilizes the ground energy collector to conduct energy exchange between the air in the basement and the deep soil, and after concentrating the air after energy exchange, it is distributed and transported to the fresh air system of the above-ground building, which is beneficial to building energy conservation. At the same time, the ground energy collection and distribution system can recycle the condensate generated by the heat exchange between the air and the deep soil, which can be used for flushing toilets, watering flowers and vegetables, etc.

Description

Technical Field

[0001] The invention belongs to the technical field of building energy-saving design, and in particular relates to a building ground energy collection and distribution system. Background Art

[0002] Building energy consumption in my country accounts for over 25% of total societal energy consumption, with half of this coming from heating, ventilation, air conditioning, and related systems. Therefore, air conditioning energy consumption has become a hot topic in the field of building energy conservation. Almost all buildings today use air conditioning systems for air conditioning, ventilation, and cooling, and their high energy consumption has become a major contributor to building energy consumption. Furthermore, while air conditioning systems create a pleasant indoor environment, they also cause some damage to the external environment. Therefore, utilizing renewable energy to lower indoor temperatures has become a hot topic in the air conditioning sector.

[0003] Based on underground temperature changes, the earth's crust is often divided into the following four geothermal zones: (1) Diurnal temperature variation zone: The temperature in this zone is affected by daily air temperature, and its variation depth generally does not exceed 1m; (2) Annual temperature variation zone: The temperature in this zone is affected by seasonal air temperature changes, and its depth generally does not exceed 20m; (3) Constant temperature zone: At a depth below 20m, it is not affected by seasonal air temperature changes; (4) Geothermal warming zone: Below the constant temperature zone, due to the influence of the earth's internal heat, the ground temperature increases with increasing burial depth. From the distribution of geothermal zones, in summer, the soil around the buried pipes pre-buried to a certain depth can be used as a cold source to cool the fresh air, and in winter, the soil around the buried pipes pre-buried to a certain depth can be used as a heat source to preheat the fresh air, which can reduce the energy consumption of air conditioning.

[0004] Existing geothermal energy utilization methods do not yet have a mature solution suitable for high-rise buildings. For example, patent document CN1415910A discloses a buried pipe heating and air-conditioning system and its application. The system consists of a heat pump unit, a hot water preparation heat exchanger, a direct cooling heat exchanger, a hot water reservoir, a floor heating coil, an indoor heat exchanger, and a buried pipe heat exchanger. These components are connected by connecting pipes. The underground portion of the buried pipe heat exchanger adopts an underground U-shaped pipe structure, and the above-ground portion is connected to the heat pump unit and the direct cooling heat exchanger through pipes, forming independent closed circulation pipes. The pipes are filled with a circulating working medium, and the circulation pipes are equipped with a circulating pump and a pipe switch. In this solution, not only is the structural design complex and the construction cost high, but also because the underground part of the buried pipe heat exchanger adopts an underground U-shaped pipe structure, the circulating working medium in the pipe is used to exchange heat with the soil. This objectively determines that the pre-buried depth of the U-shaped pipe is limited, and the actual utilization of soil is limited. On the other hand, after long-term use, there is a safety hazard of leakage of the circulating medium in the pipe. Once the circulating medium leaks, it is difficult to repair and maintain.

[0005] A patent document with the publication number CN107449075 discloses an underground buried pipe fresh air system. By burying pipes in a serpentine shape in the underground soil, air enters the underground buried pipes from the outdoor air inlet, and heat exchange occurs between the pipe wall and the soil, reducing energy consumption, having low operating costs, a simple system structure, little fault maintenance, and small investment. However, in this solution, due to the influence of its structural design, the pre-burial depth of the underground buried pipes is limited (up to 5 meters underground), the depth of the soil pit limits the pre-burial depth of the buried pipes, and the heat exchange efficiency between the air in the buried pipes and the soil is low, resulting in limited utilization of soil energy. And after the construction of the deep excavation of the soil pit for the serpentine buried pipe method, a large number of pipe piles need to be added and the raft foundation needs to be thickened to ensure the foundation strength. This will not only greatly increase the construction difficulty and building construction cost, with poor practicability, but also be greatly affected by the geological conditions and is actually unable to be popularized and applied.

[0006] Therefore, the applicant has developed and designed a ground energy collector that is convenient for efficiently absorbing and utilizing deep soil energy and can effectively play a role in foundation anti-floating. At the same time, a building ground energy collection and distribution system also needs to be designed for this ground energy collector. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a building ground energy collection and distribution system designed for a ground energy collector, so as to facilitate the application of energy such as air after heat exchange with deep soil and condensed water formed by air condensation in a building.

[0008] To solve the above technical problem, the technical solution of the present invention is:

[0009] The building ground energy collection and distribution system includes:

[0010] A number of ground energy air supply branch pipes, one end of the ground energy air supply branch pipe is correspondingly connected to a ground energy collector buried underground, the other end of the ground energy air supply branch pipe is connected to a ground energy air supply main pipe, the ground energy air supply main pipe is connected to a suction fan, the air outlet of the suction fan is arranged in a gas-liquid separator, a fresh air delivery pipe is installed at the top of the gas-liquid separator, and the fresh air delivery pipe is connected to the fresh air system of the above-ground building;

[0011] A number of condensate extraction branch pipes, one end of the condensate extraction branch pipe extends into the bottom of the corresponding ground energy collector, the other end of the condensate extraction branch pipe is connected to a condensate extraction main pipe, the condensate extraction main pipe is connected to a water pump, the water pump is also arranged in the gas-liquid separator, a drain pipe is arranged at the bottom of the gas-liquid separator, the drain pipe is connected to the water pump, and the water pump is connected to a condensate recovery pipe.

[0012] As a preferred technical solution, the exhaust fan and the water pump share a driving motor; the driving motor is fixedly installed on the station switching mechanism, and the station switching mechanism can drive the driving motor to switch between the exhaust working position and the water pumping working position;

[0013] A driving gear is installed at the output end of the driving motor, an exhaust transmission gear is installed on the shaft of the exhaust fan, and a water pumping transmission gear is installed on the shaft of the water pump; when the driving motor switches to the exhaust working position, the exhaust transmission gear meshes with the driving gear; when the driving motor switches to the water pumping working position, the water pumping transmission gear meshes with the driving gear.

[0014] As a preferred technical solution, the station switching mechanism is a chain plate conveyor belt, and the driving motor is fixedly installed on the chain plate conveyor belt through a support.

[0015] As a preferred technical solution, a liquid level gauge is installed in the gas-liquid separator, and a liquid discharge control valve is installed on the liquid discharge pipe.

[0016] As a preferred technical solution, a maintenance door is provided on the gas-liquid separator.

[0017] As a preferred technical solution, the ground energy collector includes an outer sleeve pipe with a closed lower end and an open upper end. An inner core pipe is sleeved inside the outer sleeve pipe. The pipe body of the inner core pipe extends to the bottom of the outer sleeve pipe. An air inlet chamber is formed between the inner wall of the pipe body of the outer sleeve pipe and the outer wall of the pipe body of the inner core pipe. The pipe cavity of the inner core pipe forms an air outlet chamber. The tops of the air inlet chamber and the air outlet chamber are isolated from each other, and the bottoms of the air inlet chamber and the air outlet chamber are connected; the opening at the upper end of the outer sleeve pipe forms an air inlet connected to the air inlet chamber; the inner core pipe is provided with an air outlet connected to the air outlet chamber, and the air outlet is connected to the ground energy air supply branch pipe.

[0018] Due to the adoption of the above technical solutions, the present invention has at least the following beneficial effects:

[0019] (1) The ground energy collector is used to exchange energy between the air in the basement and the deep soil, and the ground energy collection and distribution system is used to concentrate and distribute the air after energy exchange to the fresh air system of the above-ground building. In this way, in summer, the soil energy can be effectively used as a cold source to cool and cool the fresh air, and in winter, the soil energy can be effectively used as a heat source to preheat the fresh air, thereby effectively reducing the energy consumption of using air conditioners and facilitating building energy conservation. At the same time, the ground energy collection and distribution system can recycle the condensed water generated by the heat exchange between the air and the deep soil, which can be used for flushing toilets, watering flowers and vegetables, etc.

[0020] (2) The structure of the ground energy collector is ingeniously designed and can be prefabricated. During construction, the metal outer casing can be conveniently inserted into the deep soil. It can not only easily achieve a large embedded depth, but also does not require digging a foundation pit for embedding, is not affected by geological conditions, and the construction is simple and convenient. The entire circulating flow path of the air flow is long, and the air flow can flow to the deep soil area to conduct heat exchange with the soil through the pipe wall, with good heat exchange effect and high efficiency.

[0021] (3) During the heat exchange and flow process of the air, it first undergoes primary condensation in the ground energy collector, and then enters the gas-liquid separator for secondary condensation. Through the two condensations, the suitability of the air humidity index delivered to the fresh air system is ensured.

[0022] (4) With an ingenious design, a single driving motor is shared by the exhaust fan and the water pump. During normal operation, the driving motor only provides power for the exhaust fan. When condensate needs to be pumped, the driving motor is switched to the pumping working position. The two devices share one motor, thus effectively reducing the equipment cost; the driving motor is fixedly installed on the working position switching mechanism, and through the working position switching mechanism, the driving motor can be quickly switched between the exhaust working position and the pumping working position, greatly improving the convenience and speed of use. Description of the Drawings

[0023] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention. Among them:

[0024] Figure 1 is the layout schematic diagram of the building ground energy collection and distribution system in the embodiment of the present invention;

[0025] Figure 2 is the external structure schematic diagram of the gas-liquid separator and its supporting structure in the embodiment of the present invention;

[0026] Figure 3 is the perspective schematic diagram of the gas-liquid separator and its supporting structure in the embodiment of the present invention;

[0027] Figure 4 is the structure schematic diagram of the ground energy collector in the embodiment of the present invention;

[0028] Figure 5 is Figure 4 the cross-sectional structure schematic diagram at A-A in

[0029] Figure 6 is the air flow schematic diagram of the ground energy collector in the embodiment of the present invention. Detailed Embodiments

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those of ordinary skill in the art can recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of protection of the claims.

[0031] As Figures 1 to 3 shown, the building ground energy collection and distribution system includes several ground energy air supply branch pipes 1. One end of each ground energy air supply branch pipe 1 is correspondingly connected to a ground energy collector 2 buried underground, and the other end of the ground energy air supply branch pipe 1 is connected to a ground energy air supply main pipe 3. The ground energy air supply main pipe 3 is connected to an exhaust fan 4. The number of the ground energy air supply main pipes 3 can be set to more than two according to the layout requirements. In this embodiment, 3 pipes are taken as an example for illustration, but it does not limit the protection scope of the present invention. The air outlet of the exhaust fan 4 is arranged inside a gas-liquid separator 5. A fresh air delivery pipe 6 is installed at the top of the gas-liquid separator 5, and the fresh air delivery pipe 6 is connected to the fresh air system of the above-ground building.

[0032] It further includes several condensate extraction branch pipes 7. One end of each condensate extraction branch pipe 7 extends into the bottom of the corresponding ground energy collector 2, and the other end of the condensate extraction branch pipe 7 is connected to a condensate extraction main pipe 8. The condensate extraction main pipe 8 is connected to a condensate extraction pump 9. Similarly, the number of the condensate extraction main pipes 8 can be set according to the layout requirements. The condensate extraction pump 9 is also arranged inside the gas-liquid separator 5. A drain pipe 10 is arranged at the bottom of the gas-liquid separator 5, and the drain pipe 10 is connected to the condensate extraction pump 9. The water outlet of the condensate extraction pump 9 is connected to a condensate recovery pipe 11. In order to facilitate monitoring the liquid level of the condensate in the gas-liquid separator 5 and controlling the discharge, a liquid level gauge 12 is preferably installed inside the gas-liquid separator 5, and a drain control valve 13 is installed on the drain pipe 10. The drain control valve 13 preferably adopts a solenoid valve. When the liquid level in the gas-liquid separator 5 reaches the set value, the drain control valve 13 automatically opens, and the condensate in the gas-liquid separator 5 is discharged and utilized through the drain pipe 10 and the condensate extraction pump 9, which is convenient for control operation. In addition, for the convenience of maintenance and repair operations, a maintenance door 14 is arranged on the gas-liquid separator 5. Of course, the periphery of the maintenance door needs to be sealed, such as crimping a sealing strip, etc.

[0033] Refer to Figure 1 and Figure 6, the ground energy collector 2 is used to exchange the energy between the air in the basement and the deep soil, and the above-mentioned ground energy collection and distribution system is used to concentrate and distribute the air after energy exchange to the fresh air system of the above-ground building. In this way, the soil energy can be effectively used as a cold source to cool the fresh air in summer, and the soil energy can be effectively used as a heat source to preheat the fresh air in winter, so as to effectively reduce the energy consumption of using air conditioners and facilitate building energy conservation. At the same time, the ground energy collection and distribution system can recycle the condensate generated by the heat exchange between the air and the deep soil, which can be used for flushing toilets, watering flowers and vegetables, etc.

[0034] Reference Figure 2 and Figure 3 , in this embodiment, the exhaust fan 4 and the water pump 9 share a driving motor 15; the driving motor 15 is fixedly installed on the working position switching mechanism 16, and the working position switching mechanism 16 can drive the driving motor 15 to switch between the exhaust working position and the pumping working position;

[0035] A driving gear 18 is installed at the output end of the driving motor 15, an exhaust transmission gear 19 is installed on the shaft of the exhaust fan 4, and a pumping transmission gear 20 is installed on the shaft of the water pump 9; when the driving motor 15 switches to the exhaust working position, the exhaust transmission gear 19 meshes with the driving gear 18; when the driving motor 15 switches to the pumping working position, the pumping transmission gear 20 meshes with the driving gear 18. In this way, by changing the orientation of the driving motor 15, the driving force can be provided for the exhaust fan 4 and the water pump 9 respectively, which is beneficial to saving the equipment cost.

[0036] In this embodiment, the working position switching mechanism 16 is a chain plate conveyor belt, and the driving motor 15 is fixedly installed on the chain plate conveyor belt through a support 17 adapted to the chain plate. When it is necessary to change the working position of the driving motor 15, starting the chain plate conveyor belt can move and switch the driving motor 15 to the corresponding working position, and the operation is convenient and fast.

[0037] To illustrate the present invention more clearly, reference is made to Figure 4 and Figure 5, which shows a structure of the ground energy collector. The ground energy collector 2 includes an outer sleeve 21 with a closed bottom and an open top. An inner core tube 22 is sleeved inside the outer sleeve 21. The tube body of the inner core tube 22 extends to the bottom of the outer sleeve 21. An air inlet chamber 23 is formed between the inner wall of the tube body of the outer sleeve 21 and the outer wall of the tube body of the inner core tube 22. The lumen of the inner core tube 22 forms an air outlet chamber 24. The tops of the air inlet chamber 23 and the air outlet chamber 24 are isolated from each other, and the bottoms of the air inlet chamber 23 and the air outlet chamber 24 are connected. The opening at the upper end of the outer sleeve 21 forms an air inlet 25 communicating with the air inlet chamber 23. The inner core tube 22 is provided with an air outlet 26 communicating with the air outlet chamber 24, and the air outlet 26 is correspondingly connected to the ground energy air supply branch pipe 1.

[0038] The structure of the ground energy collector is ingeniously designed and can be prefabricated. During construction, the metal outer sleeve can be conveniently inserted into the deep soil. It can not only easily achieve a large embedded depth, but also does not require excavating a foundation pit for embedding, is not affected by geological conditions, and the construction is simple and convenient. The entire circulating flow path of the air flow is long, and the air flow can flow to the deep soil and conduct heat exchange with the soil through the pipe wall, with good heat exchange effect and high efficiency. During the heat exchange and flow process of the air, it first undergoes primary condensation in the ground energy collector 2, and then enters the gas-liquid separator 5 for secondary condensation. Through the two condensations, the humidity index suitability of the air transported to the fresh air system is ensured.

[0039] The main structure of the ground energy collector 2 only includes an outer sleeve and an inner core tube. The structure design is simple and the manufacturing cost is low. After being arranged in an array during construction, the outer sleeve can be used as a steel pile at the same time and applied to the high and low pile cap foundations or raft foundation to form end-bearing steel piles or friction steel piles, which can effectively play the role of foundation anti-floating.

[0040] In summary, the present invention uses the ground energy collector 2 to conduct energy exchange between the air in the basement and the deep soil, and uses the ground energy distribution system to concentrate and distribute the air after energy exchange to the fresh air system of the above-ground building. In this way, in summer, the soil energy can be effectively used as a cold source to cool and lower the temperature of the fresh air, and in winter, the soil energy can be effectively used as a heat source to preheat the fresh air, thereby effectively reducing the energy consumption of using air conditioners and being beneficial to building energy conservation.

[0041] The above is only the schematic specific implementation manner of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the scope of protection of the present invention.

Claims

1. Building energy collection and distribution system, characterized in that, Comprising: A number of geothermal energy air delivery branch pipes, one end of each geothermal energy air delivery branch pipe is correspondingly connected to a geothermal energy collector buried underground, the other end of each geothermal energy air delivery branch pipe is connected to a geothermal energy air delivery main pipe, the geothermal energy delivery main pipe is connected to an air extractor, the air outlet of the air extractor is arranged inside a gas-liquid separator, a fresh air delivery pipe is installed at the top of the gas-liquid separator, and the fresh air delivery pipe is connected to the fresh air system of a building above the ground; A number of condensate extraction branch pipes, one end of each condensate extraction branch pipe extends into the bottom of the corresponding geothermal energy collector, the other end of each condensate extraction branch pipe is connected to a condensate extraction main pipe, the condensate extraction main pipe is connected to a condensate extraction pump, the condensate extraction pump is also arranged inside the gas-liquid separator, a liquid discharge pipe is arranged at the bottom of the gas-liquid separator, the liquid discharge pipe is connected to the condensate extraction pump, and the condensate extraction pump is connected to a condensate recovery pipe; The air extractor and the condensate extraction pump share a driving motor; the driving motor is fixedly installed on a working position switching mechanism, and the working position switching mechanism can drive the driving motor to switch between an air extraction working position and a water extraction working position; A driving gear is installed at the output end of the driving motor, an air extraction transmission gear is installed on the shaft of the air extractor, and a water extraction transmission gear is installed on the shaft of the condensate extraction pump; when the driving motor switches to the air extraction working position, the air extraction transmission gear meshes with the driving gear; When the driving motor switches to the water extraction working position, the water extraction transmission gear meshes with the driving gear; The working position switching mechanism is a chain plate conveyor belt, and the driving motor is fixedly installed on the chain plate conveyor belt through a support; a liquid level gauge is installed inside the gas-liquid separator, and a liquid discharge control valve is installed on the liquid discharge pipe.

2. The building ground energy collection and distribution system according to claim 1, characterized in that: An inspection door is arranged on the gas-liquid separator.

3. The building energy collection and distribution system according to claim 1 or 2, characterized in that: The geothermal energy collector includes an outer sleeve pipe with a closed lower end and an open upper end, an inner core pipe is sleeved inside the outer sleeve pipe, the pipe body of the inner core pipe extends to the bottom of the outer sleeve pipe, an air inlet chamber is formed between the inner wall of the pipe body of the outer sleeve pipe and the outer wall of the pipe body of the inner core pipe, the pipe cavity of the inner core pipe forms an air outlet chamber, the tops of the air inlet chamber and the air outlet chamber are isolated from each other, and the bottoms of the air inlet chamber and the air outlet chamber are connected; the opening at the upper end of the outer sleeve pipe forms an air inlet connected to the air inlet chamber; the inner core pipe is provided with an air outlet connected to the air outlet chamber, and the air outlet is connected to the geothermal energy air delivery branch pipe.

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