CN211822916U

CN211822916U - Ground source heat pump

Info

Publication number: CN211822916U
Application number: CN201921919935.4U
Authority: CN
Inventors: 朱汉宝
Original assignee: Shanghai Sinyo New Energy Technology Co ltd
Current assignee: Shanghai Sinyo New Energy Technology Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-10-30
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a ground source heat pump, including ground source heat pump set, heat exchange tube, heat-transfer pipe, blow case and storage water tank, ground source heat pump set includes compressor, condenser and evaporimeter, and the evaporating chamber of evaporimeter, the condenser pipe and the compressor of condenser pass through the pipeline series connection, and the intercommunication is equipped with the expansion valve on the pipeline that communicates between condenser and the evaporimeter; the heat exchange pipe is embedded underground, is communicated with the heat exchange chamber of the evaporator through a first pipeline and forms a closed loop, the heat transfer pipe is communicated with the heat exchange pipe of the condenser through a second pipeline and forms a closed loop, and the heat transfer pipe sequentially penetrates through the air blowing box and the water storage tank; the heat exchange tube is communicated with the heat exchange tube of the condenser through a third pipeline to form a closed loop, and the heat transfer tube is communicated with the heat exchange chamber of the evaporator through a fourth pipeline to form a closed loop; the diffusion heat exchange unit is arranged outside the heat exchange pipe, and the water storage tank is heated by solar equipment. The utility model discloses the structure is simple and clear, makes things convenient for practical application, and energy utilization is good.

Description

Ground source heat pump

Technical Field

The utility model relates to a ground source heat pump.

Background

A ground source heat pump central air conditioning system is a novel energy utilization technology for heating and refrigerating by utilizing shallow geothermal energy, and is a heat pump, and the heat pump is equipment for transferring cold and heat by utilizing the principles of Carnot cycle and reverse Carnot cycle. Ground source heat pumps are generally referred to as pumps that are capable of transferring heat or cold from underground soil to a desired location. Generally, heat pumps are used for cooling or heating air conditioners. The ground source heat pump also utilizes the huge heat storage and cold accumulation capacity of the underground soil, the ground source transfers heat from the underground soil into the building in winter, and transfers underground cold into the building in summer, and a cold-hot cycle is formed in one year. But the energy utilization rate of the ground source heat pump system is not high, and the refrigeration rate using the traditional refrigerant is slow.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough among the prior art, provide a ground source heat pump.

In order to achieve the purpose, the method is realized by the following technical scheme:

a ground source heat pump comprises a ground source heat pump unit, a heat exchange pipe, a heat transfer pipe, a blowing box and a water storage tank, wherein the ground source heat pump unit comprises a compressor, a condenser and an evaporator, an evaporation chamber of the evaporator, a condensation pipe of the condenser and the compressor are connected in series through a pipeline, and an expansion valve is communicated on the pipeline communicated between the condenser and the evaporator; the heat exchange pipe is embedded underground, is communicated with the heat exchange chamber of the evaporator through a first pipeline and forms a closed loop, the heat transfer pipe is communicated with the heat exchange pipe of the condenser through a second pipeline and forms a closed loop, and the heat transfer pipe sequentially penetrates through the air blowing box and the water storage tank; the heat exchange tube is communicated with the heat exchange tube of the condenser through a third pipeline to form a closed loop, and the heat transfer tube is communicated with the heat exchange chamber of the evaporator through a fourth pipeline to form a closed loop; valves are arranged at two ends of the third pipeline and the fourth pipeline, and valves are arranged on the first pipeline and the second pipeline; the heat exchange pipe is externally provided with a diffusion heat exchange unit, and the water storage tank is heated by solar equipment.

Preferably, the heat exchange tube includes a plurality of vertical heat exchange tubes that just set up side by side, diffusion heat transfer unit include many circles around in horizontal heat exchange tube on the vertical heat exchange tube, horizontal heat exchange tube with vertical heat exchange tube communicates each other.

Preferably, the heat exchange tube includes a plurality of vertical heat exchange tubes that just set up side by side, diffusion heat transfer unit is including pre-buried underground and locating perpendicular heat exchange tube outside the tubes's heat transfer box, the heat exchange box external connection has the heat transfer extension pipe, the inner wall of heat exchange box with connect through the connecting pipe between the vertical heat exchange tube.

Preferably, the heat exchange extension pipe is communicated with the inside of the heat exchange box body, and the plurality of heat exchange extension pipes are vertically arranged on two sides of the heat exchange box body.

Preferably, the solar equipment comprises support columns on two sides, solar panels are arranged on the tops of the support columns, storage batteries are arranged between the support columns on the two sides, the solar panels are connected to the storage batteries through electricity storage wires, the storage batteries are connected with power transmission wires, the power transmission wires are connected with electric heating wire tubes, and the electric heating wire tubes extend into the water storage tank.

Preferably, the section of the heat transfer pipe positioned in the blow box is bent to form a first heat transfer pipe coil, and the section of the heat transfer pipe positioned in the water storage box is bent to form a second heat transfer pipe coil; a valve used for opening and closing is arranged on a pipeline between the first heat transfer pipe coil and the second heat transfer pipe coil; and a connecting pipeline for communicating the two pipelines into a loop is arranged on the two pipelines between the first heat transfer pipe coil and the second heat transfer pipe coil, and a valve for opening and closing is arranged on the connecting pipeline.

Preferably, the blow case includes box, fan and first auxiliary heating device, the both ends of box are equipped with air intake and air outlet respectively, first heat transfer coil sets up be close to in the box the position of air intake, fan and auxiliary heating device set up respectively be close to the position of air intake in the box, just auxiliary heating device is located between air intake and the fan.

Preferably, the air inlet and the air outlet are respectively provided with a filter screen, and a drainage channel communicated with the outside is arranged below the first heat transfer pipe coil in the blowing box.

The utility model discloses ground source heat pump's beneficial effect includes:

1) the whole ground source heat pump device can be switched into a heating or refrigerating mode by utilizing the switching of the first pipeline and the third pipeline as well as the switching of the second pipeline and the fourth pipeline; the heat exchange area can be effectively increased through the diffusion heat exchange unit; the electric heating wire tube powered by solar energy can provide heat for the water storage tank for a long time, so that the heat exchange efficiency is effectively improved;

2) the horizontal heat exchange tubes are additionally arranged on the vertical heat exchange tubes, so that the heat exchange area can be increased, the heat exchange quantity can be increased, the heat exchange efficiency can be improved, and the horizontal heat exchange tubes can also play a role in buffering the vertical heat exchange tubes;

3) the vertical heat exchange tubes are externally provided with the heat exchange box body and the heat exchange extension tubes, so that the contact area between the vertical heat exchange tubes and a ground source is greatly increased, and the energy absorption efficiency of heat energy or cold energy is improved, thereby reducing the consumption of electric energy and achieving the purpose of energy conservation;

4) the air blowing box and the water storage box are adopted to exchange heat with the system, so that the utilization efficiency of a heat source is increased.

Drawings

Fig. 1 is a schematic structural view of the ground source heat pump of the present invention.

Fig. 2 is a schematic view of the construction of the blow box of fig. 1.

Fig. 3 is a schematic structural view of a horizontal heat exchange tube arranged on the vertical heat exchange tube in fig. 1.

Fig. 4 is a schematic structural diagram of the vertical heat exchange tube and the diffusion heat exchange unit in fig. 1.

Fig. 5 is a schematic structural diagram of the solar power device in fig. 1.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

as shown in fig. 1, a ground source heat pump system comprises a ground source heat pump unit 1, a heat exchange tube 2, a heat transfer tube 3, a blowing box 4 and a water storage tank 5, wherein the ground source heat pump unit 1 comprises a compressor 6, a condenser 7 and an evaporator 8, an evaporation chamber in the evaporator, a condenser tube in the condenser and the compressor are connected in series through pipelines, an expansion valve 9 is communicated with the pipeline communicated between the condenser 7 and the evaporator 8, and the expansion valve 9, the evaporation chamber in the evaporator, the condenser tube in the condenser and the compressor form a heat exchange circulation loop; the heat exchange pipe 2 is pre-buried underground, is connected with a heat exchange chamber of the evaporator 8 through a first pipeline 10 and forms a closed loop, the heat transfer pipe 3 is connected with the heat exchange pipe of the condenser 7 through a second pipeline 11 and forms a closed loop, and the heat transfer pipe 3 sequentially penetrates through the air blowing box 4 and the water storage tank 5 and exchanges heat in the air blowing box 4 and the water storage tank 5.

Further, in order to increase the energy utilization rate of the system, a diffusion heat exchange unit 99 is arranged outside the heat exchange tube 2, and the water storage tank 5 is heated by solar equipment 98.

Wherein, the heat exchange tube 2 is connected with the heat exchange tube in the condenser 7 through a third pipeline 12 and forms a closed loop, and the heat transfer tube 3 is connected with the heat exchange chamber of the evaporator 8 through a fourth pipeline 13 and forms a closed loop; valves are arranged at two ends of the third pipeline 12 and the fourth pipeline 13, and valves are arranged on the first pipeline 10 and the second pipeline 11. The section of the heat transfer pipe 3 in the blow box 4 is bent into a first heat transfer pipe coil 31, and the section of the heat transfer pipe 3 in the storage tank 5 is bent into a second heat transfer pipe coil 32. The pipe coiled surface of the first heat transfer pipe coil 31 is perpendicular to the wind direction in the blow box 4, so that the heat exchange efficiency of the first heat transfer pipe coil 31 is higher, the heat transfer pipe 3 is bent into a pipe coil shape, the heat exchange area of a pipeline is increased, and the heat exchange efficiency of the heat transfer pipe in the blow box 4 and the water storage tank 5 is effectively increased. A connecting pipeline 33 is arranged on a pipeline between the first heat transfer pipe coil 31 and the second heat transfer pipe coil 32 on the heat exchange pipe 3, a valve 34 is arranged on the connecting pipeline 33, two ends of the connecting pipeline 33 are respectively connected to the two parallel heat exchange pipes 3 and form a closed loop with the first heat transfer pipe coil 31, a valve 35 is arranged on a pipeline between the connecting pipeline 33 and the second heat transfer pipe coil 32, when the water in the water storage tank is not required to be heated or cooled, the valve 35 can be closed, and the valve 34 is opened, so that a cold source or a heat source cannot enter the water storage tank.

As shown in fig. 2, the blowing box 4 includes an air inlet 44, an air outlet 45, a fan 41 and a first auxiliary heating device 42, the heat transfer pipe 3 is disposed on the box body near the air inlet 44, the fan 41 and the first auxiliary heating device 42 are sequentially disposed at the air outlet of the blowing box 4 from inside to outside at intervals, the fan 41 works to suck the outside air into the air inlet 45, and after heat exchange with the first heat transfer pipe 31, which is bent by the heat transfer pipe 3 in the blowing box 4, the air is discharged through the air outlet, and then heat exchange is performed on the indoor air. When higher temperature needs to be supplied to the room, the first auxiliary heating device 42 is turned on, the first auxiliary heating device is a heating wire, and the fan 41 blows air to the room after the air is heated by the heating wire, so that the temperature of the indoor air is raised.

Furthermore, the air inlet 44 and the air outlet 45 of the air blowing box 4 are respectively provided with a filter screen. By the arrangement, dust and other impurities are prevented from entering the box body of the blowing box, and the service life of the fan 41 in the blowing box is prolonged. The blow box body corresponding to the lower portion of the first heat transfer pipe 31 where the heat transfer pipes 3 are bent in the blow box is provided with a drain groove 43 communicating with the outside. When the heat transfer pipe 3 is in the cooling mode, water droplets are condensed on the outer wall of the first heat transfer pipe coil, fall into the drain groove 43 after being condensed, and are discharged out of the blowbox through the drain groove 43.

As shown in fig. 3, the heat exchange tube 2 includes a plurality of vertical heat exchange tubes 20 arranged side by side, the diffusive heat exchange unit 99 includes a plurality of horizontal heat exchange tubes 22 surrounding the vertical heat exchange tubes 20, the horizontal heat exchange tubes 22 are communicated with the vertical heat exchange tubes 20, and preferably, an anti-freezing heat exchange liquid can flow through the heat exchange tubes 2. During its operation, the vertical heat exchange tubes 20 serve a primary heat exchange or refrigeration function, while the horizontal heat exchange tubes 22 serve a secondary function. Specifically, when cold energy needs to be obtained from the underground in summer, the horizontal heat exchange tubes 22 supplement the cold energy when the cold energy obtained by the vertical heat exchange tubes 20 is insufficient; in winter, when the heat obtained by the vertical heat exchange tube 20 is insufficient, the heat is supplemented by the horizontal heat exchange tube 22; another important effect of the practical novel heat exchanger is that the horizontal heat exchanger 22 can be used as a buffer for the vertical heat exchanger 20, because under the working condition of summer, when the vertical heat exchanger 20 obtains cold from underground heat exchange and transmits the cold to a machine room above the ground, and the like, because the temperature near the ground surface is very high, although a certain heat preservation measure is taken, the loss amount of the cold is still very large, and the horizontal heat exchanger 22 is close to the ground surface, and the temperature of the horizontal heat exchanger is between the operating temperature of the vertical heat exchanger 20 and the temperature of the ground surface, so that the good buffer effect can be achieved, and the loss of the cold of the vertical heat exchanger 20 can be reduced; in winter, after the vertical heat exchange tubes 20 obtain heat from the ground, the heat of the vertical heat exchange tubes 20 is lost due to the very low temperature of the ground surface, and the operating temperature of the horizontal heat exchange tubes 22 is between the operating temperature of the vertical heat exchange tubes 20 and the temperature of the ground surface, so that a good buffer effect can be achieved, and the heat of the vertical heat exchange tubes 20 can be saved without being wasted.

As shown in fig. 4, the heat exchange tube includes a plurality of vertical heat exchange tubes 20 arranged side by side, the diffusion heat exchange unit 99 includes a heat exchange box 24 embedded underground and arranged outside the vertical heat exchange tubes, a heat exchange extension tube 26 is connected outside the heat exchange box 24, and the inner wall of the heat exchange box 24 is connected with the vertical heat exchange tubes 20 through a connecting tube 28. Further, the heat exchange extension pipe 26 is communicated with the inside of the heat exchange box body 24, and the plurality of heat exchange extension pipes 26 are arranged up and down on two sides of the heat exchange box body 24. When the heat exchanger is used in practice, the heat exchange box body 24 can be filled with water, the specific heat capacity of the water is large, the heat conduction of the liquid is better than that of the solid, the heat exchange is provided by the fact that the temperature of the ground temperature field with relatively constant temperature changes is large in the whole year on the ground, when the summer is hot, the heat on the ground can be brought to the ground bottom through the circulating system of the water, and cool domestic water can be supplied to people.

As shown in fig. 5, the solar energy device 98 includes two support columns 50, a solar panel 52 is disposed on the top of each support column 50, a storage battery 54 is disposed between the two support columns 50, the solar panel 52 is connected to the storage battery 54 through a storage wire 56, the storage battery 54 is connected to a power line 58, the power line 58 is connected to a heating wire tube 59, and the heating wire tube 59 extends into the storage water tank 5. Therefore, the electric heating wire tube powered by solar energy can provide heat for the water storage tank for a long time, and the heat exchange efficiency is effectively improved.

After having the above structural feature, the utility model discloses can implement according to following process:

as shown in fig. 1, the ground source heat pump of the present application has a heating mode and a cooling mode, respectively, when in actual operation.

For the heating mode, opening the first pipeline and the second pipeline, and closing the third pipeline and the fourth pipeline; starting a compressor to work, compressing the refrigerant of the HBR-22A type into a high-temperature high-pressure gaseous refrigerant by the compressor, then sending the high-temperature high-pressure gaseous refrigerant to a condensing pipe, radiating by the condensing pipe to obtain a low-temperature high-pressure liquid refrigerant, and performing heat exchange in an air blowing box and a water storage box of a second heat transfer pipe coil in a heat transfer pipe connected with the condensing pipe through a first heat transfer pipe coil; the low-temperature high-pressure liquid refrigerant in the tube is throttled by the throttle valve and then enters the evaporator to be changed into the low-temperature low-pressure liquid refrigerant, and the low-temperature low-pressure liquid refrigerant in the evaporator absorbs a large amount of heat in the underground heat exchange tube to be changed into the low-temperature low-pressure gas refrigerant, and then enters the compressor to be circularly compressed.

For the refrigeration mode, the third pipeline and the fourth pipeline are opened, the first pipeline and the second pipeline are closed, the compressor is started to work, the compressor compresses the refrigerant of the HBR-22A type into a high-temperature high-pressure gaseous refrigerant, then the high-temperature high-pressure gaseous refrigerant is sent to the condenser pipe, the low-temperature high-pressure gaseous refrigerant is formed after heat dissipation of the condenser pipe, the low-temperature high-pressure liquid refrigerant in the pipe enters the evaporator through the throttle valve after being subjected to underground heat exchange, the low-temperature low-pressure liquid refrigerant in the pipe is changed into a low-temperature low-pressure liquid refrigerant, the low-temperature low-pressure liquid refrigerant in the evaporator absorbs heat in air and water in the heat transfer pipe, the low-temperature low.

The utility model provides a ground source heat pump, the structure is simple and clear, makes things convenient for practical application, and energy utilization is rateed well.

The embodiments of the present invention are only used for illustration, and do not limit the scope of the claims, and other substantially equivalent alternatives that may be conceived by those skilled in the art are within the scope of the present invention.

Claims

1. The ground source heat pump is characterized by comprising a ground source heat pump unit, a heat exchange pipe, a heat transfer pipe, a blowing box and a water storage tank, wherein the ground source heat pump unit comprises a compressor, a condenser and an evaporator, an evaporation chamber of the evaporator, a condensation pipe of the condenser and the compressor are connected in series through a pipeline, and an expansion valve is communicated on the pipeline communicated between the condenser and the evaporator; the heat exchange pipe is embedded underground, is communicated with the heat exchange chamber of the evaporator through a first pipeline and forms a closed loop, the heat transfer pipe is communicated with the heat exchange pipe of the condenser through a second pipeline and forms a closed loop, and the heat transfer pipe sequentially penetrates through the air blowing box and the water storage tank; the heat exchange tube is communicated with the heat exchange tube of the condenser through a third pipeline to form a closed loop, and the heat transfer tube is communicated with the heat exchange chamber of the evaporator through a fourth pipeline to form a closed loop; valves are arranged at two ends of the third pipeline and the fourth pipeline, and valves are arranged on the first pipeline and the second pipeline; the heat exchange pipe is externally provided with a diffusion heat exchange unit, and the water storage tank is heated by solar equipment.

2. A ground source heat pump according to claim 1, wherein the heat exchange pipe comprises a plurality of vertical heat exchange pipes arranged side by side, the diffusive heat exchange unit comprises a plurality of circles of horizontal heat exchange pipes surrounding the vertical heat exchange pipes, and the horizontal heat exchange pipes are communicated with the vertical heat exchange pipes.

3. The ground source heat pump of claim 1, wherein the heat exchange tubes comprise a plurality of vertical heat exchange tubes arranged side by side, the diffusion heat exchange unit comprises a heat exchange box embedded underground and arranged outside the vertical heat exchange tubes, a heat exchange extension tube is connected outside the heat exchange box, and the inner wall of the heat exchange box is connected with the vertical heat exchange tubes through a connecting tube.

4. The ground source heat pump of claim 3, wherein the heat exchange extension pipe is communicated with the inside of the heat exchange box body, and the plurality of heat exchange extension pipes are arranged up and down at two sides of the heat exchange box body.

5. A ground source heat pump according to claim 1, characterized in that the solar energy equipment comprises support columns at two sides, a solar cell panel is arranged on the top of each support column, a storage battery is arranged between the support columns at two sides, the solar cell panel is connected to the storage battery through a power storage line, the storage battery is connected to a power transmission line, the power transmission line is connected to a heating wire tube, and the heating wire tube extends into the water storage tank.

6. A ground source heat pump according to claim 1, wherein the heat transfer pipe is bent at a section of the blow box to form a first heat transfer pipe coil, and the heat transfer pipe is bent at a section of the storage tank to form a second heat transfer pipe coil; a valve used for opening and closing is arranged on a pipeline between the first heat transfer pipe coil and the second heat transfer pipe coil; and a connecting pipeline for communicating the two pipelines into a loop is arranged on the two pipelines between the first heat transfer pipe coil and the second heat transfer pipe coil, and a valve for opening and closing is arranged on the connecting pipeline.

7. The ground source heat pump of claim 6, wherein the blowing box comprises a box body, a fan and a first auxiliary heating device, an air inlet and an air outlet are respectively arranged at two ends of the box body, the first heat transfer pipe coil is arranged at a position close to the air inlet in the box body, the fan and the auxiliary heating device are respectively arranged at a position close to the air inlet in the box body, and the auxiliary heating device is arranged between the air inlet and the fan.

8. The ground source heat pump of claim 7, wherein the air inlet and the air outlet are respectively provided with a filter screen, and a drainage channel communicated with the outside is arranged below the first heat transfer pipe coil in the blowing box.