Ground source heat pump cooling and heating auxiliary system

Abstract

The utility model discloses a ground source heat pump cooling and heating auxiliary system which comprises a ground source heat pump main machine, an energy storage assembly installed on the ground and an auxiliary heating assembly, and a buried pipe heat exchange mechanism is communicated between the heat exchange water input end and the heat exchange water output end of the ground source heat pump main machine. The energy storage assembly comprises a base, and an energy storage mechanism and a temperature sensing control module which are fixed on the base; the auxiliary heating assembly comprises a water storage tank and a plurality of auxiliary wells, the water storage tank is communicated with a heat exchange part, and the heat exchange part extends into the auxiliary wells; the inner wall of the water storage tank is connected with an electric heater; a partition piece is fixed on the inner side of the water storage tank, and communicating holes which are uniformly distributed are formed in the partition piece; the partition piece divides the interior of the water storage tank into two spaces which are communicated up and down; and the actual power consumption can be reduced while the indoor comfortable temperature can be guaranteed, the actual power consumption can be reduced by adopting clean energy, and a certain energy-saving effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of geothermal energy technology, specifically to a geothermal heat pump cooling and heating auxiliary system. Background Technology

[0002] With economic development and the improvement of people's living standards, heating and air conditioning in public buildings and residences have become common requirements. In scenarios with large temperature differences between indoors and outdoors, ground source heat pumps are a technologically and economically advantageous alternative for solving heating and air conditioning problems.

[0003] In existing technologies, ground source heat pumps mainly rely on natural energy, such as shallow geothermal resources between 60 and 180 meters above the ground. The natural temperature of this layer is generally between 10°C and 20°C. In summer, heat exchange with the shallow geothermal resources lowers the temperature of the hot water entering the room, achieving a cooling effect. In winter, heat exchange with the shallow geothermal resources raises the temperature of the hot water entering the room, achieving a heating effect. However, in northern regions, the heating demand is high, but the maximum ground source temperature of 20°C is insufficient for winter heating in northern regions. Furthermore, some losses occur during heat exchange and circulation, resulting in a lower actual indoor temperature. Therefore, these regions usually use additional electric heating equipment for auxiliary heating, which increases energy consumption.

[0004] Currently, Chinese utility patent CN211400137U discloses a ground source heat pump buried pipe, including at least one buried branch pipe arranged vertically with an inlet and an outlet. The inlet of the buried branch pipe is connected to a buried water inlet main pipe, and the outlet of the buried branch pipe is connected to a buried water return main pipe. A connecting pipe is added between the two buried branch pipes to connect them. By setting two connecting pipes, this patent increases the flow of water in the two vertical pipes, thereby increasing the heat exchange efficiency and improving the heat exchange rate of the entire vertical buried pipe.

[0005] However, existing ground source heat pumps still have a common problem: when the heating temperature is insufficient, additional heating equipment is needed to assist in raising the temperature, resulting in excessive energy consumption. There is an urgent need for an auxiliary system that can achieve energy saving and consumption reduction to solve the above problems. Based on this, this application provides a ground source heat pump cooling and heating auxiliary system. Summary of the Invention

[0006] The purpose of this invention is to address the problem that existing ground source heat pump cooling and heating systems require additional electric heating equipment for auxiliary heating over large areas during winter in northern regions, resulting in excessively high power consumption. This invention provides a ground source heat pump cooling and heating auxiliary system to solve the aforementioned problem.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a ground source heat pump cooling and heating auxiliary system, including a ground source heat pump host, an energy storage component installed on the ground, and an auxiliary heating component, wherein a buried pipe heat exchange mechanism is connected between the hot water input end and the output end of the ground source heat pump host.

[0008] The energy storage component includes a base, and an energy storage mechanism and a temperature sensing control module fixed on the base;

[0009] The auxiliary heating component includes a water storage tank and several auxiliary wells. A heat exchanger is connected to the water storage tank and extends into the auxiliary wells.

[0010] An electric heater is connected to the inner wall of the water storage tank;

[0011] The water storage tank is fixed with a partition component on its inner side, and the partition component has evenly distributed connecting holes.

[0012] The partition divides the interior of the water tank into two interconnected spaces.

[0013] In the above technical solution, natural energy can be converted into electrical energy for storage through an energy storage mechanism, and then the water exchange water in the lower space of the water storage tank can be heated through an electric heater. Finally, the heat exchange component extends to the shallow layer of the ground surface to heat the surrounding soil, thereby completing the auxiliary heat exchange work of the buried pipe heat exchange mechanism.

[0014] Preferably, the heat exchanger includes several outlet valves fixed to the bottom of the water storage tank and connected to its interior, several inlet pumps fixed to the front of the water storage tank and connected to its interior, and a U-shaped heat exchange tube fixedly installed between the output end of the outlet valve and the input end of the corresponding inlet pump.

[0015] In the above technical solution, the inlet pump can provide the power to transport the hot water circulating inside the U-shaped heat exchange tube, enabling it to participate in the heat exchange cycle efficiently.

[0016] Preferably, the partition component includes a partition plate fixed inside the water storage tank, and the connecting hole is opened on the top of the partition plate.

[0017] In the above technical solution, the interior of the water storage tank is divided into upper and lower spaces by a partition plate, and the two spaces are connected by a connecting hole, so that the water in the upper space can fall normally while the falling rate can be appropriately slowed down.

[0018] Preferably, the connecting hole is a frustum shape that is narrower at the top and wider at the bottom;

[0019] A water temperature sensor is fixedly installed on the inside of the water storage tank, located below the partition panel.

[0020] In the above technical solution, by setting the connecting hole to be narrow at the top and wide at the bottom, the falling rate of the hot water can be further slowed down, while the wider opening at the bottom allows the air in the lower space to rise normally, making it less likely that the hot water will completely block the connecting hole and affect the mixing of the hot water in the upper and lower layers.

[0021] The water temperature sensor installed below the partition panel can monitor the temperature of the lower heat exchange water inside the storage tank in real time, ensuring that it is controlled within a preset range.

[0022] Preferably, the outlet valve corresponds one-to-one with the inlet pump, the U-shaped heat exchange pipe is buried inside the corresponding auxiliary well, and the auxiliary well and the buried pipe heat exchange mechanism are staggered in the shallow part of the ground surface.

[0023] In the above technical solution, the U-shaped heat exchange pipe buried in the shallow layer of the earth's surface can exchange heat with the surrounding soil to raise its temperature, thereby allowing the temperature of the buried pipe heat exchange mechanism in the shallow layer of the earth's surface to rise.

[0024] Preferably, one end of the U-shaped heat exchange tube is connected to the inside of the water storage tank via an outlet valve, and the other end of the U-shaped heat exchange tube is connected to the part of the water storage tank located above the partition plate via an inlet pump.

[0025] In the above technical solution, the U-shaped heat exchange tube can be connected to the lower and upper spaces inside the water storage tank through the outlet valve and the inlet pump, respectively, so that the circulation function of the hot water can be implemented normally.

[0026] Preferably, the energy storage mechanism includes a solar power generator fixed to the top of the base and an energy storage battery electrically connected to the solar power generator;

[0027] The temperature control module includes an outdoor temperature sensor fixed to the outside of the solar generator and a microcontroller fixedly installed on the top of the base.

[0028] In the above technical solution, the solar power generator converts solar energy into electrical energy and stores it in an energy storage battery for backup. The electrical energy in the energy storage battery can be used to power auxiliary heating components, outdoor temperature sensors, and microcontrollers.

[0029] Preferably, the outdoor temperature sensor and the microcontroller are electrically connected.

[0030] In the above technical solution, the microcontroller receives the signal from the outdoor temperature sensor to help determine whether the outside temperature has reached the temperature for heating or cooling, and then controls the ground source heat pump unit to start.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] 1. This ground source heat pump cooling and heating auxiliary system, through the cooperation of the partition plate and connecting holes in the water storage tank, can slow down the exchange and mixing efficiency of the upper and lower water layers, thereby allowing the lower hot water to rise to the preset temperature more quickly and be used for soil auxiliary heating. This enables the temperature obtained by the ground source heat energy heat exchange pipeline components to be improved to a certain extent, which can reduce the actual power consumption while ensuring a comfortable indoor temperature. It is very practical and effective.

[0033] 2. This ground source heat pump cooling and heating auxiliary system uses a solar generator in conjunction with an energy storage battery to obtain and store electrical energy when exposed to sunlight, providing auxiliary power support for the entire system. By using clean energy, it can reduce actual electricity consumption and achieve a certain energy-saving effect. With the use of an outdoor temperature sensor, it can help the system determine the temperature of the external natural environment, making it easier for the system to start up according to the actual temperature. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 The structure of this utility model Figure 1 Schematic diagram of the connection structure of the energy storage module;

[0036] Figure 3 The structure of this utility model Figure 1 Schematic diagram of the connection structure of the auxiliary heating component;

[0037] Figure 4 The structure of this utility model Figure 3 A cross-sectional schematic diagram of the connection structure of the intermediate water storage tank;

[0038] Figure 5 The structure of this utility model Figure 3 A cross-sectional schematic diagram of the connection structure of the auxiliary well.

[0039] In the diagram: 1. Ground source heat pump unit; 2. Buried pipe heat exchange mechanism;

[0040] 3. Energy storage components; 31. Base; 32. Solar generator; 33. Energy storage battery; 34. Outdoor temperature sensor; 35. Microcontroller;

[0041] 4. Auxiliary heating components; 41. Water storage tank; 42. Auxiliary well; 43. Water outlet valve; 44. Water inlet pump; 45. U-shaped heat exchange tube; 46. Electric heater; 47. Partition plate; 47a. Connecting hole; 48. Water temperature sensor. Detailed Implementation

[0042] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] Please refer to Figures 1 to 5 The ground source heat pump cooling and heating auxiliary system in this embodiment includes a ground source heat pump host 1, an energy storage component 3 installed on the ground, and an auxiliary heating component 4. The ground source heat pump host 1 is connected to the hot water input end and the output end by a buried pipe heat exchange mechanism 2.

[0044] The energy storage component 3 includes a base 31, and an energy storage mechanism and a temperature sensing control module fixed on the base 31;

[0045] The auxiliary heating component 4 includes a water storage tank 41 and several auxiliary wells 42. A heat exchanger is connected to the water storage tank 41 and extends into the auxiliary wells 42.

[0046] An electric heater 46 is connected to the inner wall of the water storage tank 41;

[0047] A partition component is fixed to the inner side of the water storage tank 41, and the partition component has evenly distributed connecting holes 47a.

[0048] The partition divides the interior of the water tank 41 into two interconnected spaces.

[0049] In the above technical solution, natural energy can be converted into electrical energy and stored through an energy storage mechanism. Then, the water exchange water in the lower space of the water storage tank 41 is heated by an electric heater 46. Finally, the heat exchange element extends to the shallow ground surface to heat the surrounding soil, thereby helping to increase the actual heat exchange temperature and complete the auxiliary heat exchange work of the buried pipe heat exchange mechanism 2.

[0050] like Figure 3 and Figure 4 As shown, the heat exchanger includes several outlet valves 43 fixed to the bottom of the water storage tank 41 and connected to its interior. Several inlet pumps 44 are fixed to the front of the water storage tank 41 and connected to its interior. A U-shaped heat exchange tube 45 is fixedly installed between the output end of the outlet valve 43 and the input end of the corresponding inlet pump 44. The inlet pumps 44 can provide power for transporting the hot water circulating inside the U-shaped heat exchange tubes 45, enabling it to participate in the heat exchange cycle efficiently. Both the inlet pumps 44 and the outlet valves 43 are electrically controlled opening and closing components, which facilitates unified control.

[0051] It should be noted that the partitioning component includes a partitioning plate 47 fixed inside the water storage tank 41. A connecting hole 47a is opened on the top of the partitioning plate 47. The connecting hole 47a is a frustum shape that is narrow at the top and wide at the bottom. By making the connecting hole 47a narrow at the top and wide at the bottom, the rate of hot water falling can be further slowed down. At the same time, the wider opening at the bottom allows the air in the lower space to rise normally. It is not easy for the hot water to completely block the connecting hole 47a and affect the mixing of the hot water in the upper and lower layers. This can reduce the impact of the water after heat exchange on the heating water, so that the temperature of the heating water can be kept relatively stable. It can also prevent the electric heater 46 from being overloaded due to excessive mixing and temperature changes.

[0052] In addition, a water temperature sensor 48 is fixedly installed on the inner side of the water storage tank 41, located below the partition plate 47. The water temperature sensor 48 located below the partition plate 47 can monitor the temperature of the lower layer of hot water inside the water storage tank 41 in real time, so that it can be controlled within the preset value range. The preset value can be adjusted according to different regions to keep it between 40℃ and 60℃, which is conducive to heat exchange with the shallow soil surface.

[0053] It should also be noted that the water storage tank 41 is filled with hot water for heat exchange, and the total volume of the hot water for heat exchange is four-fifths of the total internal capacity of the water storage tank 41, so that the hot water for heat exchange inside can carry out normal circulation, heat exchange and mixing.

[0054] like Figure 1 and Figure 5 As shown, the outlet valve 43 corresponds to the inlet pump 44 one by one, and the U-shaped heat exchange pipe 45 is buried inside the corresponding auxiliary well 42. The auxiliary well 42 and the buried pipe heat exchange mechanism 2 are staggered in the shallow layer of the ground, which allows the U-shaped heat exchange pipe 45 buried in the shallow layer of the ground to exchange heat with the surrounding soil and raise its temperature, thereby allowing the temperature of the buried pipe heat exchange mechanism in the shallow layer of the ground to rise.

[0055] It should be noted that the buried pipe heat exchange mechanism 2 consists of a manifold, buried pipes, and delivery pipelines. The buried pipes are buried in the shallow ground layer, specifically between 60 and 120 meters deep, so that the buried pipes can exchange energy with the shallow ground layer. The hot water output from the ground source heat pump unit 1 is transported to each buried pipe through one of the manifolds to exchange heat with the soil. The hot water after heat exchange flows back to the ground source heat pump unit 1 through the buried pipes and the corresponding manifolds for treatment. Then, the hot water after heat exchange is transported indoors for circulation to meet the heating and cooling needs.

[0056] like Figure 3As shown, one end of the U-shaped heat exchange tube 45 is connected to the interior of the water storage tank 41 through the outlet valve 43, and the other end of the U-shaped heat exchange tube 45 is connected to the part of the water storage tank 41 located above the partition plate 47 through the inlet pump 44. This allows the U-shaped heat exchange tube 45 to be connected to the lower and upper spaces inside the water storage tank 41 through the outlet valve 43 and the inlet pump 44, respectively, so that the circulation function of the hot water can be implemented normally. Since the electric heater 46 is installed on the inner bottom wall of the water storage tank 41, a heating space can be formed in the space below the partition plate 47, while the upper space of the partition plate 47 is a normal temperature water space.

[0057] It should be noted that, through the partition setting of the partition panel 47, the water storage tank 41 can reduce the actual capacity of the hot water to be heated while ensuring the total water volume, so as to quickly raise its temperature to the preset temperature range. In addition, the hot water in the upper room temperature water space after heat exchange flows downward slowly and mixes with the hot water under the action of the connecting hole 47a, so that the lower hot water is not prone to large temperature changes due to mixing too quickly, and thus will not affect the heat exchange effect too much.

[0058] like Figure 2 As shown, the energy storage mechanism includes a solar generator 32 fixed to the top of the base 31 and an energy storage battery 33 electrically connected to the solar generator 32. The solar generator 32 converts solar energy into electrical energy and stores it in the energy storage battery 33 for backup, providing natural energy for the auxiliary system and achieving the effect of energy saving and consumption reduction.

[0059] The temperature sensing control module includes an outdoor temperature sensor 34 fixed to the outside of the solar generator 32 and a microcontroller 35 fixedly installed on the top of the base 31. The electrical energy in the energy storage battery 33 can be used to power the auxiliary heating component 4 and the outdoor temperature sensor 34 and the microcontroller 35. The outdoor temperature sensor 34 and the microcontroller 35 are electrically connected. The microcontroller 35 receives the signal from the outdoor temperature sensor 34 to help determine whether the outside temperature has reached the temperature for heating or cooling, and then controls the ground source heat pump host 1 to start, so as to realize the operation of ground source heat pump for cooling or heating.

[0060] It should be noted that the microcontroller 35 can be a PLC controller. With simple programming by those skilled in the art, it can control the ground source heat pump host 1, electric heater 46, water inlet pump 44 and water outlet valve 43 based on the sensing value of the outdoor temperature sensor 34. The energy storage battery 33 can work together with the main power supply for power supply. The main power supply can be the power supply integrated into the building. All of the above electrical devices are electrically connected to the main controller. The main controller can be a computer controller or other existing known control devices. All of these are existing technologies, so they will not be described in detail.

[0061] Work style:

[0062] 1. In use, the ground source heat pump unit 1 exchanges the internal hot water with the soil heat energy of the shallow layer around the ground through the buried pipe heat exchange mechanism 2, so that the temperature of the medium delivered to the room can be changed. In summer, when the outdoor temperature sensor 34 detects that the outdoor temperature is higher than 25°C, the microcontroller 35 receives the relevant signal and controls the ground source heat pump unit 1 to start. The hot water delivered by the ground source heat pump unit 1 will be reduced due to the above heat exchange, and then it can achieve cooling of the room after returning.

[0063] 2. In winter, when the outdoor temperature sensor 34 detects that the outdoor temperature is below 5℃, the microcontroller 35 receives the relevant signal and controls the ground source heat pump unit 1 to start. The hot water supplied by the ground source heat pump unit 1 will be heated due to the aforementioned heat exchange, thereby raising the indoor temperature. At the same time, the solar generator 32 stores the converted electrical energy in the energy storage battery 33 under the long-term radiation of summer and winter daytime. The energy storage battery 33 supplies power to the electric heater 46, enabling it to start working and heating the hot water in the part of the water tank 41 located below the partition plate 47. This creates a hot water space below the partition plate 47, while the space above the partition plate 47 is a normal temperature water space. The water in the hot water space will be heated by the water outlet valve 43. The water is transported to the U-shaped heat exchange tube 45 for heat exchange, providing auxiliary heating to the surrounding soil of the buried heat exchange mechanism 2 in the shallow part of the ground surface. This increases the actual heat exchange temperature, allowing the temperature of the water entering the room after being processed by the ground source heat pump unit 1 to be increased to meet the needs of indoor users. The water that has completed heat exchange through the U-shaped heat exchange tube 45 is then pumped by the inlet pump 44 into the ambient temperature water space above the partition plate 47 to wait for mixing. The connecting hole 47a reduces the actual flow area of ​​the hot water, making it less likely for the hot water to directly enter the area below the partition plate 47 and mix with the hot water. This ensures that the heat exchange proceeds normally while maintaining a relatively stable hot water temperature, allowing the auxiliary heating work to proceed normally.

[0064] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ground source heat pump cooling and heating auxiliary system, comprising a ground source heat pump host (1), an energy storage component installed on the ground, and an auxiliary heating component (4), wherein a buried pipe heat exchange mechanism (2) is connected between the hot water input end and the output end of the ground source heat pump host (1). Its features are, The energy storage component includes a base (31), and an energy storage mechanism and a temperature sensing control module fixed on the base (31); The auxiliary heating component (4) includes a water storage tank (41) and several auxiliary wells (42). A heat exchanger is connected to the water storage tank (41), and the heat exchanger extends into the auxiliary wells (42). An electric heater (46) is connected to the inner wall of the water storage tank (41). The water storage tank (41) has a partition component fixed on its inner side, and the partition component has evenly distributed connecting holes (47a). The partition divides the interior of the water tank (41) into two interconnected spaces.

2. The ground source heat pump cooling and heating auxiliary system according to claim 1, characterized in that, The heat exchanger includes several outlet valves (43) fixed to the bottom of the water storage tank (41) and connected to its interior. Several inlet pumps (44) are fixed to the front of the water storage tank (41) and connected to its interior. A U-shaped heat exchange tube (45) is fixedly installed between the output end of the outlet valve (43) and the input end of the corresponding inlet pump (44).

3. The ground source heat pump cooling and heating auxiliary system according to claim 2, characterized in that, The partition component includes a partition plate (47) fixed inside the water storage tank (41), and the connecting hole (47a) is opened on the top of the partition plate (47).

4. The ground source heat pump cooling and heating auxiliary system according to claim 3, characterized in that, The connecting hole (47a) is a frustum shape, narrow at the top and wide at the bottom; A water temperature sensor (48) is fixedly installed on the inner side of the water storage tank (41) below the partition plate (47).

5. The ground source heat pump cooling and heating auxiliary system according to claim 2, characterized in that, The outlet valve (43) corresponds to the inlet pump (44) one by one, and the U-shaped heat exchange pipe (45) is buried inside the corresponding auxiliary well (42). The auxiliary well (42) and the buried pipe heat exchange mechanism (2) are staggered in the shallow part of the ground surface.

6. The ground source heat pump cooling and heating auxiliary system according to claim 3, characterized in that, One end of the U-shaped heat exchange tube (45) is connected to the interior of the water storage tank (41) through the water outlet valve (43), and the other end of the U-shaped heat exchange tube (45) is connected to the part of the water storage tank (41) located above the partition plate (47) through the water inlet pump (44).

7. The ground source heat pump cooling and heating auxiliary system according to claim 1, characterized in that, The energy storage mechanism includes a solar generator (32) fixed to the top of the base (31) and an energy storage battery (33) electrically connected to the solar generator (32). The temperature control module includes an outdoor temperature sensor (34) fixed to the outside of the solar generator (32) and a microcontroller (35) fixedly installed on the top of the base (31).

8. The ground source heat pump cooling and heating auxiliary system according to claim 7, characterized in that, The outdoor temperature sensor (34) and the microcontroller (35) are electrically connected.

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