KR102448368B1 - Water collecting unit cleaning device for geothermal heat pump system including suspension module for suspending deposited foreign substances and control method thereof - Google Patents

Abstract

The present invention is a heat pump unit using groundwater; a first water collection pipe that is buried underground and collects groundwater; a second catchment pipe buried underground to collect groundwater and accommodating the first catchment pipe; In the water collection unit washing device used in a geothermal heat pump system comprising a; an intake pipe for guiding the groundwater taken in through the first water collection hole pipe to the heat pump unit, the foreign substances inside the second water collection hole pipe are moved to the ground It relates to a water collecting unit washing device for a geothermal heat pump system including a suspension module, characterized in that it comprises a cleaning unit for discharging.

Description

A water collecting unit cleaning device for geothermal heat pump system including suspension module for suspending deposited foreign substances and control method thereof

The present invention relates to an apparatus for washing a water collection unit for a geothermal heat pump system including a suspension module for suspending sedimentary foreign matter, and a method for controlling the same.

In general, as an energy source used for heating and cooling, fossil fuels such as coal, oil, natural gas, or the like, or electric power energy produced using these fossil fuels or nuclear power is mainly used. However, fossil fuels have disadvantages in polluting water quality and the environment due to various pollutants generated in the combustion process. Among these alternative energies, research on wind power, solar heat and geothermal energy, which have infinite energy sources, and heating and cooling devices using them are used. These energy sources have the advantage of obtaining energy without affecting air pollution and climate change. On the other hand, there is a disadvantage that the energy density is very low.

As the depletion of fossil energy and environmental pollution issues have emerged, research and development on the use of clean energy, i.e., natural energy such as solar heat, geothermal heat, and wind power, is being actively conducted. The use of systems that do this is increasing.

A heating/cooling system using a heat pump that transfers a low-temperature heat source to a high temperature by using the heat or condensation heat of a refrigerant or transfers a high-temperature heat source to a low temperature has the advantage of being able to perform both cooling and heating in one system.

According to these advantages, the cases of installing a heating and cooling system using a heat pump where cooling and heating are required are increasing.

In the case of a geothermal heat pump system using groundwater, a method of driving the heat pump by burying a pipe underground and pulling up the groundwater contained in the buried pipe to the upper part is used.

Although this method has the advantage of increasing energy utilization efficiency by using groundwater with a relatively constant temperature for heating and cooling, foreign substances such as sand or soil introduced along with groundwater remain inside the pipe buried underground when the service life is long. will do

Residual foreign substances block the flow path of the buried pipe or occupy the volume of the space where the groundwater is accommodated, thereby causing a serious problem of overloading or malfunctioning the heat pump system and lowering energy efficiency.

Numerous papers and patent documents are referenced throughout this specification and citations thereof are indicated. The disclosure contents of the cited papers and patent documents are incorporated herein by reference in their entirety to more clearly describe the level of the technical field to which the present invention pertains and the content of the present invention.

The inventors of the present invention have made intensive research efforts to develop a geothermal heat pump system having superior thermal efficiency compared to the existing geothermal heat pump system.

It is an object of the present invention to effectively remove foreign substances from the inside of a water collecting pipe of a geothermal heat pump system using groundwater.

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention, claims and drawings.

The present invention is a heat pump unit using groundwater; a first water-collection pipe that is buried underground and collects groundwater; a second catchment pipe buried underground to collect groundwater and accommodating the first catchment pipe; In the water collection unit washing device used in a geothermal heat pump system comprising a; an intake pipe for guiding the groundwater taken in through the first water collection hole pipe to the heat pump unit, the foreign substances inside the second water collection hole pipe are moved to the ground It is possible to provide a water collecting unit washing device for a geothermal heat pump system, characterized in that it includes; a cleaning unit for discharging.

According to an aspect of the present invention, the cleaning unit may include a cleaning tube inserted into the second water collection hole pipe and sucking groundwater and foreign substances; and a motor for providing a negative pressure to the cleaning tube.

According to an aspect of the present invention, the cleaning unit is provided between the cleaning tube and the motor, the filter for filtering foreign substances sucked through the cleaning tube; and a suction pipe connecting the motor and the filter.

According to an aspect of the present invention, the filter includes a filter case connected to the cleaning pipe and the suction pipe; a filter member provided in the filter case and having a plurality of through holes to filter foreign substances introduced through the cleaning tube; and a shielding plate for fixing the filter member to the filter case.

According to an aspect of the present invention, the filter is provided on one side of the filter case, the foreign matter discharge pipe for discharging the foreign matter filtered by the filter member to the outside; may further include.

According to an aspect of the present invention, a water supply pump for supplying cleaning water to the inside of the second water collection hole; and a water supply pipe for guiding the cleaning water supplied by the water supply pump into the second water collection hole pipe.

According to an aspect of the present invention, a connection pipe for guiding the filtered groundwater sucked by the motor to the water supply pipe; may further include.

According to an aspect of the present invention, the second water collection hole in the interior of the water jet to suspend the water and foreign substances; may further include a suspension module.

According to an aspect of the present invention, the suspension module may include a suspension tube inserted into the second water collecting hole; a suspension motor for injecting water into the suspension tube; and a suspension nozzle provided at the lower end of the suspension tube, wherein the suspension nozzle includes: a suspension nozzle body for temporarily accommodating water injected from the suspension tube; and a plurality of injection holes formed under the suspension nozzle body.

According to an aspect of the present invention, the cleaning unit is provided at the lower end of the cleaning pipe, the water level detection sensor for detecting the water level inside the second water collection hole pipe; may further include.

In the control method of the water collecting unit washing apparatus for a geothermal heat pump system of the present invention, when the water level detected by the water level sensor is below a reference value, the water supply pump is operated. control method can be provided.

The present invention has an effect of effectively removing foreign substances from the inside of a water collecting pipe of a geothermal heat pump system using groundwater.

1 shows a schematic diagram of a geothermal heat pump system equipped with a water collecting unit washing device for a geothermal heat pump system according to the present invention.
2 is another embodiment of a geothermal heat pump system provided with a water collecting unit washing device for a geothermal heat pump system.
3 is another embodiment of a geothermal heat pump system provided with a water collecting unit washing device for a geothermal heat pump system.
4 is a view showing a suspension tube and a suspension nozzle of the water collecting unit washing device.
5 is an enlarged view of the filter shown in the schematic diagram.
6 is an enlarged view of the water collecting hole shown in the schematic diagram.
7 is a diagram illustrating a control method of a water collecting unit washing device for a geothermal heat pump system.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1 , a geothermal heat pump system according to an embodiment of the present invention may include a heat pump unit 10 including an evaporator, a condenser, a compressor, and a throttle valve.

In addition, the geothermal heat pump system includes a water intake pipe 23 for taking in groundwater performing heat exchange through the heat pump unit 10, a water intake module 24 provided in the water intake pipe 23 to suck groundwater, It may include a drain pipe 31 for guiding the water discharged after heat exchange in the heat pump unit 10 back to the basement, and a drain module 32 provided in the drain pipe 31 to drain the groundwater.

In addition, the geothermal heat pump system may include a first water collection pipe 21 into which the water intake pipe 23 is inserted, and a second water collection oil pipe 22 accommodating the first water collection pipe 21 . can

The second water collecting hole pipe 22 is made of synthetic resin or concrete and buried in the ground, and groundwater can be introduced into it through a plurality of through holes formed on the side surfaces.

In addition, the first water collecting hole 21 is made of metal, synthetic resin or concrete and buried in the ground, and the groundwater collected through the second water collecting hole 22 through a plurality of through holes formed on the side is inside can be introduced into

As the number of years of use of the geothermal heat pump is accumulated, sand and soil introduced through the through hole may be accumulated on the lower side of the second water collecting hole 22 , which blocks the through hole of the first water collecting hole 21 . Alternatively, the water intake pipe 23 may be blocked to prevent smooth water intake.

In order to solve this problem, the geothermal heat pump system according to an embodiment of the present invention may include a water collection unit washing device, and the water collecting unit washing device discharges foreign substances inside the second water collection hole to the ground. It may further include a cleaning unit.

The cleaning unit includes a cleaning pipe 41 inserted into the second water collection hole pipe 22 and sucking groundwater and foreign substances, a cleaning module 42 provided at an end of the cleaning pipe 41, and the cleaning It may include a motor 43 that provides a negative pressure to the tube.

Accordingly, the groundwater mixed with foreign substances can be discharged to the ground through the cleaning pipe 41 , so that the foreign substances inside the second water collection hole 22 can be easily removed.

Furthermore, the cleaning unit may further include a filter 44 provided between the cleaning pipe 241 and the motor 43 to filter out foreign substances, and a suction pipe 45 connecting the motor and the filter. .

The filter 44 prevents the problem that foreign substances such as sand or soil block the suction pipe, and purifies the groundwater, thereby allowing the reuse of groundwater.

On the other hand, since foreign substances such as soil or sand cannot be sucked through the cleaning pipe 41 by themselves without groundwater, cleaning must always be performed in a state in which groundwater is stored in the second water collection hole 22 or higher.

Therefore, when the water level of groundwater is temporarily lowered due to a system or environmental problem, cleaning can be performed only by artificially adding water.

To this end, the water collection unit washing device includes a water supply pump 53 for supplying cleaning water to the inside of the second water collection hole pipe, and a second water collection oil hole pipe 22 for cleaning water supplied by the water supply pump 53. ) It may further include a water supply pipe 51 for guiding the inside, and a water supply module 52 provided at the end of the water supply pump 53 to discharge water.

The lower end of the water supply pipe 51 and the water supply module 52 are provided above the second water collection hole pipe 22 , so that water can be supplied smoothly even when the pressure of the water supply pump 53 is low.

Accordingly, when the water level inside the second water collection pipe 22 is low to perform cleaning, water is injected into the inside through the water supply pump 53 and the water supply pipe 51, and then the cleaning unit operates can do.

As a configuration for determining whether it is suitable to perform cleaning, the cleaning unit is provided at the lower end of the cleaning pipe 41 and a water level sensor 60 for detecting the water level inside the second water collection pipe 22 may further include.

A control method using the water level sensor 60 will be described later with reference to FIG. 5 .

2 is a geothermal heat pump system according to another embodiment of the present invention, and only the differences from the above-described embodiment will be described.

According to this embodiment, the geothermal heat pump system may further include a connection pipe 70 for guiding the filtered groundwater sucked by the motor 43 to the water supply pump 53 and the water supply pipe 51 . have.

This has the effect of not simply discharging the filtered groundwater to the ground, but supplying it back to the inside of the second water collecting duct 22, thereby saving water and continuously ensuring an appropriate water level required for cleaning.

3 is a geothermal heat pump system according to another embodiment of the present invention, which is different from the above-described embodiment and further includes a suspension module.

The suspension module can suspend foreign substances such as soil and sand that have settled on the floor by spraying water inside the second water collection hole pipe 22, and the suspended foreign substances are discharged through the cleaning pipe 41. can

That is, by suspending the inside of the second water collecting hole 22, foreign substances can be smoothly moved to the outside while being suspended in water.

The suspension module includes a suspension tube 71 inserted into the second water collecting hole 22, a suspension nozzle 72 provided at the lower end of the suspension tube 71, and water in the suspension tube 71. It may include a suspension motor 73 for injecting the.

The suspension nozzle 72 will be described in more detail with reference to FIG. 4 .

The suspension nozzle 72 temporarily accommodates the water injected from the suspension tube 71 and is formed in the suspension nozzle body 721 having a larger diameter than the suspension tube 71 and the suspension nozzle body 721 . A plurality of injection holes 722 may be included.

This allows water to be sprayed in multiple directions at several points through the suspension nozzle 72, so that the inside of the second water collecting hole 22 can be more easily suspended.

On the other hand, when the amount of water inside the second water collection hole 22 is excessively reduced as water is discharged to the outside by the cleaning module, the suction of groundwater may become impossible from a certain moment.

Accordingly, the total amount of water supplied by the water supply modules 51 , 52 , 53 and the suspension modules 71 , 72 , 73 into the second water collecting duct 22 is the cleaning module 41 , 42 , 43 , 44 , 75) is controlled to be greater than the amount to be sucked in, so that the water level inside the second water collection hole 22 can be maintained above a predetermined standard.

5 shows a detailed configuration of the filter 44, the configuration and operating state of the filter will be described with reference to this.

The filter 44 includes a cylindrical filter case 441 connected to the cleaning pipe 41 and the suction pipe 45 , a cover 442 for selectively shielding an upper open surface of the filter case 441 , and the filter A cylindrical filter member 443 provided in the case 441 and having a plurality of through holes to filter foreign substances introduced through the cleaning tube, a ring-shaped shielding plate 444 for fixing the filter member to the filter case may include

In addition, at one side of the filter case 441 , a foreign material discharge pipe 445 for discharging foreign substances filtered by the filter member 443 to the outside, and a discharge valve 446 for selectively opening and closing the foreign material discharge pipe 445 ) may be further provided.

In addition, a foreign material detection sensor (not shown) that measures the amount of foreign matter filtered and accumulated between the filter member 443 and the foreign material discharge pipe 445 inside the filter case 441 or the amount of foreign matter filtered in real time may be further provided.

6 is an enlarged view of the lower portions of the first water collecting pore pipe 21 and the second water collecting pore pipe 22 .

The plurality of through-holes of the first water collection hole 21 are formed only in the lower portion of the first water collection tube body, and the plurality of through holes of the second water collection hole 22 are both upper and lower portions of the second water collection tube body. can be formed in

Also, at least a portion of the lower end of the water intake portion of the first water intake pipe may be provided to have a height equal to or lower than that of at least some of the plurality of through holes of the first water collection hole tube 21 .

This is because, when a plurality of through-holes are also provided in the upper portion of the first water collection hole 21, when the groundwater inside the second water collection hole 22 becomes insufficient, the groundwater inside the first water collection hole 21 This is because all of the water flows out into the second water collection hole pipe 22, which may cause a problem that water intake becomes impossible.

7 is a flowchart illustrating a control method of a water collecting unit washing apparatus according to an embodiment of the present invention.

First, the control method of the water collection unit washing apparatus includes a groundwater and foreign material suction step (S21) of sucking foreign substances inside the second water collection hole pipe 22 through the cleaning pipe 41 and the motor 43, and the water level Step (S22) of detecting the water level inside the second water collecting duct 22 through the detection sensor 60, and determining whether the standard water level for determining whether the detected water level is the cleaning and correcting level is satisfied (S23) may include

In addition, the control method of the water collection unit washing apparatus may further include a step (S24) of operating the water pump, which is performed when it is determined that the reference water level is below the reference water level in the determining whether the reference water level is satisfied (S23).

On the other hand, when it is determined that the reference water level is higher than the reference water level in the determining whether the reference water level is satisfied ( S23 ), the cleaning end determination step ( S25 ) may be further performed.

In the cleaning end determination step (S25), it can be determined whether the cleaning is terminated depending on whether the time required for cleaning has elapsed or whether the foreign material detected by the foreign material detection sensor as the cleaning progresses is less than or equal to a predetermined reference value. .

Even if the effect is not described in this specification, the present invention may additionally have different effects of each of the above-described components, and derive a new effect that cannot be seen in the prior art according to the organic coupling relationship between the above-described respective components. can do.

In addition, the embodiments shown in the drawings may be modified and implemented in other forms, and when implemented including the configuration claimed in the claims of the present invention or implemented within the scope of equivalents, it should be considered to belong to the scope of the present invention. something to do.

heat pump unit 10
2nd water catchment hall 21 2nd water catchment hall 22
Intake pipe 23 Intake module 24
Drain pipe 31 Drain module 32
Cleaning tube 41 Cleaning module 42
Motor 43 Filter 44
filter case 431 cover 432
filter element 433 shield plate 434
Foreign matter discharge pipe 435 Drain valve 436
Suction pipe 45 Water supply pipe 51
Water supply module 52 Water pump 53
connector 70

Claims (6)

a heat pump unit using groundwater; a first water collection pipe that is buried underground and collects groundwater; a second catchment pipe buried underground to collect groundwater and accommodating the first catchment pipe; In the water collection unit washing apparatus used in the geothermal heat pump system comprising a; an intake pipe for guiding the groundwater taken in through the first water collection hole pipe to the heat pump unit,
a water supply module for supplying water to the inside of the second water collection hole;
a suspension module for suspending water and foreign substances by spraying water into the second water collecting hole; and
and a cleaning unit for discharging foreign substances suspended by the suspension module to the ground inside the second water collecting pipe.
The suspension module is
a suspension pipe inserted into the second water collecting hole;
Including; a suspension nozzle provided at the lower end of the suspension tube;
The suspension nozzle is
a suspension nozzle body for temporarily accommodating the water injected from the suspension tube; and
Including a plurality of injection holes formed in the lower portion of the suspension nozzle body,
The diameter of the suspension nozzle body is larger than the diameter of the suspension tube.
A water collecting unit washing device for a geothermal heat pump system, characterized in that it. The method of claim 1,
The suspension module is a water collecting unit washing device for a geothermal heat pump system, characterized in that the lowermost end is provided above the cleaning unit in the direction of gravity. 3. The method of claim 2,
The suspension module is
a suspension motor for injecting water into the suspension tube;
A water collecting unit cleaning device for a geothermal heat pump system comprising a. 4. The method of claim 3,
The suspension nozzle is
A water collecting unit washing device for a geothermal heat pump system, characterized in that it is disposed below the center in the height direction of the second water collecting hole pipe. The method of claim 1,
The water supply module,
a water supply pump for supplying cleaning water to the inside of the second water collection hole; and
A water supply pipe guiding the cleaning water supplied by the water supply pump into the second water collection hole pipe; further comprising
A water collecting unit cleaning device for a geothermal heat pump system, characterized in that it.

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