KR200384621Y1 - Heat pump system using geothermal energy and controlling apparatus - Google Patents

Abstract

 The present invention relates to a heat pump system and a control device using the geothermal heat, and the present invention is composed of a geothermal heat exchanger, a geothermal circulation pump and a heat pump as a unit to control the sequential control and the number control of the geothermal heat pump system according to the load A heat pump system using geothermal heat, which is equipped with a controller suitable for each unitized device and installs an energy consumption and energy cost program according to energy measurement inside the unit controller and displays it outside the controller. will be.

Geothermal heat pump system of the present invention for achieving the above object

A plurality of heat pumps 30 transferring a high temperature heat source to a low temperature or a low temperature heat source using a refrigerant; and

A geothermal heat exchanger (10) for absorbing geothermal heat or releasing heat into the ground; and

In the heat pump system using geothermal heat comprising a geothermal circulation pump 20 for smoothly circulating the geothermal water in the pipe connecting the heat pump and the geothermal heat exchanger,

 The geothermal heat exchanger 10, the geothermal circulation pump 20 and the heat pump 30 is characterized by consisting of N units consisting of a system.

The present invention consists of N units consisting of a geothermal heat exchanger, a geothermal circulation pump and a heat pump as one system, thereby enabling the sequential control of the geothermal circulation pump according to the load and ultimately controlling energy. To reduce costs,

 By installing N controllers to control the heat pump system consisting of N units, it is possible to monitor the temperature and current of each unit and to warn of any abnormality (freeze phenomenon, abnormality in the compressor) in the heat pump system. It is possible to stop the equipment by unit, control by unit and facilitate the summer and winter switching operation.

It is possible to secure the reliability of the heat pump system using geothermal heat by installing an indicator that displays energy consumption and energy cost outside the controller.

     In addition, by installing the system in the landfill, it is possible to significantly reduce the initial installation investment cost to increase the efficiency of the heat pump by using economical and high geothermal heat.

Description

  Heat pump system and control device using geothermal heat {HEAT PUMP SYSTEM USING GEOTHERMAL ENERGY AND CONTROLLING APPARATUS}

 The present invention relates to a geothermal heating and cooling system using a heat pump, and the present invention is configured by uniting a geothermal heat exchanger, a geothermal circulation pump and a heat pump, so that the geothermal heat pump system according to the load can be controlled sequentially and the number control. In addition, the present invention relates to a heat pump system using geothermal heat, which is equipped with a controller for each unitized device and installs an energy consumption and energy cost program according to energy measurement in the unit controller and displays it outside the controller.

The technology related to a geothermal heating and cooling system using a heat pump using geothermal as an energy source is disclosed as follows.

The air-conditioning heat exchange system disclosed in Korean Patent Laid-Open Publication No. 2000-63299 includes a geothermal heat exchanger that circulates geothermal heat contained in the ground and ground water of a constant temperature present in groundwater or open water; A cooling cycle and a heating cycle for circulating the geothermal heat drawn up by the geothermal heat exchanger; It includes a hot water cycle for indoors that is speeched to the heating cycle for heating the hot water of the room.

In addition, the heat pump system using geothermal and waste heat disclosed in Korean Patent Laid-Open Publication No. 2004-106826 discloses the waste heat recovered through a waste heat recovery heat exchanger from a waste water tank storing living wastewater having waste heat as a heat source in an evaporator of a hot water supply heat pump. A waste heat recovery unit configured to supply heat by supplying hot water from the compressor of the heat pump; It is equipped with a number of geothermal heat exchange pipes buried in the ground to use geothermal heat from this geothermal heat exchange pipe as a heat source for heat pump evaporator for heating and cooling, and to supply hot water produced by the compressor of heat pump. A geothermal heat exchanger configured to discharge the array of compressors generated by the pump into the ground through the geothermal heat exchange pipe; A first three-way valve connected to an inlet side of the hot water heat pump evaporator of the waste heat recovery unit and an inlet side of a heat pump evaporator for heating and cooling of the geothermal heat exchange unit; And a second three-way valve connected to an outlet side of the hot water heat pump evaporator for the waste heat recovery unit and an outlet side of the cooling and heating heat pump evaporator of the geothermal heat exchange unit. By using the arrangement of the first and second three-way valve as a heat source of the hot water heat pump evaporator for the hot water of the waste heat recovery unit is characterized in that it is possible to supply a hot water supply of a stable temperature.

 In the case of the patent, it is operated manually, and the automatic operation also has a lot of energy waste as a configuration that does not operate according to the load during operation or remote operation according to the operating conditions of the heat pump itself.

 In addition, since the heat pump generally does not have a capacity of more than 30-40RT of frozen tons, several heat pumps are used to meet the required cooling tones, and the heat pump system used in this case is shown in FIG. As it is.

1 shows a state in which a plurality of heat pump systems use a single geothermal circulation pump, and in this case, aberration operation and large number operation of equipment according to a load are not possible, and the geothermal circulation pump has a constant electric power even when the load is small. Since geothermal circulation pumps must be used as capacity, there are problems that energy consumption is high and geothermal circulation pumps are damaged when a load larger than the capacity of geothermal circulation pumps is taken.

In addition, as shown in FIG. 1, in the related art, since a plurality of heat pump systems are controlled by one controller, there is a problem in that temperature, current, etc. of each unit cannot be monitored, and when a freezing wave occurs and a problem occurs in the compressor. In this case, there was a problem that a warning function could not be provided in which unit had an abnormal phenomenon, and there was a problem in that each unit could not be stopped, and a problem that was not suitable for a changeover operation in summer and winter. Because the system is controlled by a single controller, a complicated piping system causes a problem in that it takes a long time to repair the controller.

In addition, conventionally, a display device capable of displaying energy consumption and energy cost according to energy measurement in a heat pump system using geothermal heat is not provided.

In order to calculate the energy consumption, it is difficult to secure the reliability of the system because it is necessary to perform a complicated calculation.

 The present invention has been made to solve the above problems, the first object of the present invention is to provide a heat pump system using a geothermal heat consisting of a geothermal heat exchanger, a geothermal circulation pump and a heat pump unit.

A second object of the present invention is to provide a heat pump system using a geothermal heat is provided with a controller for each unit heat pump system.

It is a third object of the present invention to provide a heat pump system using geothermal heat with an indicator capable of measuring energy usage.

  The present invention is to achieve the above object, the present invention is a plurality of heat pump for transferring a high temperature heat source to a low temperature or a low temperature heat source using a refrigerant; and

A geothermal heat exchanger for absorbing geothermal heat or releasing heat into the ground; and

In the heat pump system using geothermal heat comprising a geothermal circulation pump for smoothly circulating the refrigerant in the pipe connecting the heat pump and the geothermal heat exchanger,

 The geothermal heat exchanger, geothermal circulation pump and heat pump is composed of N units consisting of a system.

 In addition, the present invention is characterized in that the N controller is installed in the unit that can control each unit for each unit.

 In addition, the present invention is characterized in that provided with a measuring instrument for measuring the energy consumption and energy costs inside the controller.

 In addition, the present invention is characterized in that the LCD is further provided on the outside of the controller to display the numerical value displayed on the measuring device.

In addition, the geothermal heat exchanger of the present invention is characterized in that the heat exchange within 25-40 ℃ buried in the landfill.

Hereinafter, the present invention will be described in detail with reference to FIGS. 2 to 3.

Any system that is the subject of the present invention is applicable to any one that can use the thermal energy in the basement, but in one embodiment of the present invention will be described by using only the waste heat discarded in the landfill.

2 is an exemplary view of a heat pump system using geothermal heat according to the present invention, and FIG. 3 is an overall conceptual view using the heat pump system shown in FIG. 2.

As shown in FIG. 2, the present invention provides a plurality of heat pumps 30 that transfer a high temperature heat source to a low temperature or a low temperature heat source to a high temperature by using a refrigerant; A geothermal heat exchanger (10) for absorbing geothermal heat or releasing heat into the ground; N units including a geothermal circulation pump 20 for smoothly circulating refrigerant in the pipe 11 connecting the heat pump 30 and the geothermal heat exchanger 10 as a system; The unit includes N controllers 40 which can control each unit for each unit and have a measuring device installed therein for measuring energy consumption and energy cost therein; An LCD 60 for displaying to the outside what is shown in the measuring device; And a main computer 50 for centrally controlling the controller 40.

The heat pump 30 includes a condenser 32, a compressor 34, an expansion valve 36, and the like, and when the geothermal water absorbs geothermal heat through the geothermal heat exchanger 10 and enters the heat pump 30, the heat is heated. Geothermal heat absorbed by the refrigerant from the pump 30 is used as a heat source through the heating and cooling unit 70 connected to the heat pump 30 for heating and cooling function, hot water function and leachate treatment process.

The geothermal heat exchanger (10) is installed in a landfill, and the geothermal heat exchanger (10) is a pipe 11, which is a distribution path of refrigerant, is buried in the ground, and its shape is manufactured in various forms such as coil shape and U shape. It can be installed vertically or horizontally in a landfill.

The geothermal circulation pump 20 smoothly flows the refrigerant in the pipe 11 connecting the heat pump 30 and the geothermal heat exchanger 10.

At the bottom of the landfill, the average temperature is about 15 ℃, but the upper part is the heat of decomposition of waste, and the average temperature is 25 ℃ or more.The geothermal water of 5 ℃ ~ 10 ℃ in the pipe absorbs the geothermal heat by passing through the geothermal heat exchanger. It becomes a refrigerant of ~ 25 ℃ enters the circulation pump through the geothermal circulation pump, the circulation pump passes the high temperature temperature taken out of the landfill while passing through the compressor, and passes through the expansion valve. The expansion valve may be a throttle valve or a capillary tube.

Landfill sites have an average of 25 ° C or higher due to the heat generated during the decomposition of garbage. This is a considerably higher temperature than the average ground heat of 15 ° C. The geothermal system obtains energy by heat exchange between the ground and the refrigerant in the pipe, so the greater the temperature difference, the greater the efficiency.

In addition, since the landfill does not need to bury the geothermal exchanger deep underground and can be installed without a drilling process, the initial installation investment costs are drastically reduced.

 In the present invention, a plurality of units may be installed so that each unit may provide all the heat sources required for the cooling and heating unit 70, but each heat pump separates the hot water supply function and the heating and cooling function from the cooling and heating unit 70. It may be dedicated, or may also be responsible for warming up the leachate treatment process.

The cooling and heating unit 70 may include a circulation pump for smoothly circulating the refrigerant, a circulation pump for indoor cooling and heating, a cold / hot water tank for indoor cooling and heating, a hot water tank for providing a shower, and hot water.

In general, it is common to use a plurality of heat pumps in order to obtain a desired cooling tone, but in the past, several heat pump systems were considered as one geothermal circulation pump, and the system was controlled by one controller.

In the present invention, a plurality of heat pumps 30; A geothermal heat exchanger (10) for absorbing geothermal heat or releasing heat into the ground; It is essential that the geothermal circulating pump 20 for smoothly circulating the geothermal water in the pipe 11 connecting the heat pump 30 and the geothermal heat exchanger 10 is composed of N units composed of one system.

In addition, in the present invention, as described above, the controller 40 capable of controlling the unit is installed for each unit, and as described above, the controller 40 is installed for each unit to control the sequential and number of equipment according to the load. can do.

Number control means controlling the number of units to be operated in order to reach a predetermined freezing tone, and sequential control means that the first unit is operated in order to obtain a predetermined freezing tone, and is called aberration control. Means that the desired control achieves the desired cryogenic tone, and the units after the previously operated unit are operated sequentially when the system is to be operated again after the system is terminated.

The flow chart for the sequential control and logarithmic control is shown in Figure 4, the sequential control and logarithmic control according to the present invention is obtained by the following flow.

First, when the desired freezing tone X is input (S1), the first unit is operated (S2) to generate the freezing tone X1 generated by the first unit.

Comparing the freezing ton (X1) and the desired freezing ton (X). (S3) When the freezing ton (X1) generated by the first unit in the step is more than the desired freezing ton (X). In this case, only the first unit is operated without further operation of the second unit, and when the freezing tone X1 generated by the first unit is less than the desired freezing tone X, the second unit is operated (S4). In this step, the freezing tone (X2) is generated.

The sum of the frozen tones generated from the first unit and the second unit and the desired frozen tones are subjected to a comparison step.

When the sum (X1 + X2) of the freezing tones generated from the first unit and the second unit is equal to or more than the desired freezing tone (X), the third unit is not operated, and only the first unit and the second unit are operated. If the sum of the frozen tones (X1 + X2) generated from the first unit and the second unit is less than or equal to the desired frozen ton (X), the third unit is operated to repeat the above process.

In the conventional geothermal heat pump system, a single geothermal circulation pump was used to obtain a predetermined refrigeration tone, but in this case, when the load was under a given refrigeration tone, there was a power loss in the geothermal circulation pump and the heat pump. In addition, the geothermal circulation pump and the heat pump both provide the cause of mechanical failure due to frequent stoppages for the load variation.However, in the present design, the number of units of the geothermal circulation pump can be used to control the number of units and control the number of units simultaneously. It is possible to obtain the desired cryogenic tones at low cost.

In addition, each unit and the controller of the present invention is preferably composed of a communication line, by configuring as a communication line as described above can significantly reduce the piping wiring.

Conventionally, the whole system is controlled by one controller. However, by installing controllers for each unit, temperature and current of each unit can be monitored, and a warning can be given when problems such as freezing phenomenon and compressor occur. And, there is an advantage that can be stopped by each equipment, the interlocking operation is possible for each unit.

In addition, the controller installed in the unit can detect an abnormal phenomenon for each unit, and can be repaired for each unit.

The controller 40 has a built-in program that can calculate the energy consumption and energy costs according to the energy measurement, and the LCD 40 that can display the energy consumption and energy costs calculated by the program 40 Can be installed externally.

 In the above description of the present invention, a geothermal system using a landfill having a specific shape and structure has been described with reference to the accompanying drawings, but the present invention can be variously modified and changed by those skilled in the art. It should be interpreted as falling within the protection scope of the present invention.

 The present invention can control the geothermal circulation pump according to the load sequentially by using the geothermal heat exchanger, the geothermal circulation pump, and the heat pump as one unit, and also can control the number of units to ultimately save energy. .

In addition, the present invention is installed by installing N controllers to control the system consisting of N units to monitor the temperature and current of each unit, and at the same time can generate an alarm when an abnormal phenomenon (freeze phenomenon, abnormality in the compressor) occurs, Each equipment can be stopped for each unit and controlled by each unit to facilitate summer and winter switching operation.

In addition, by installing an indicator that can display the energy consumption and energy costs, etc. outside the controller has the effect of ensuring the reliability of the heat pump system using geothermal.

 In addition, by installing the system in the landfill, it is possible to significantly reduce the initial installation investment cost to increase the efficiency of the heat pump by using economical and high geothermal heat.

1 is an embodiment of a heat pump system using a conventional geothermal heat.

2 is an embodiment of a heat pump system using geothermal heat according to the present invention.

3 is an overall conceptual view using the heat pump system shown in FIG.

4 is a conceptual diagram illustrating a state controlled by FIGS. 1 and 3.

* Description of the symbols for the main parts of the drawings *

10: geothermal heat exchanger 11: pipe

20: geothermal circulation pump 30: heat pump

32: condenser 34: compressor

36: expansion valve 40: controller

50: main computer 60: LCD

70: air conditioning

Claims (8)

 A plurality of heat pumps that transfer a high temperature heat source to a low temperature or a low temperature heat source by using a refrigerant; and A geothermal heat exchanger for absorbing geothermal heat or releasing heat into the ground; and In the heat pump system using a geothermal heat comprising a geothermal circulation pump for smoothly circulating the geothermal water in the pipe connecting the heat pump and the geothermal heat exchanger,  And a geothermal heat exchanger, a geothermal circulating pump, and a heat pump comprising N units configured as one system. The method of claim 1, The heat pump system using geothermal heat characterized in that it is configured as a communication line between each unit can reduce the wiring wiring.  The method of claim 1, The unit is a heat pump system using geothermal heat, characterized in that the N controllers that can control each unit for each unit is installed.  The method of claim 3, Geothermal heat pump system, characterized in that provided with a measuring instrument for measuring the energy consumption and energy costs inside the controller.  The method of claim 4, wherein Geothermal heat pump system, characterized in that the display means further provided to the outside of the controller to display the numerical value displayed on the measuring device.  The method of claim 4, wherein The exhibition means is a heat pump system using geothermal heat, characterized in that the CD.  The method of claim 1, The geothermal heat exchanger is a heat pump system using geothermal heat, characterized in that embedded in the landfill.  The method of claim 6, The geothermal heat exchanger is a heat pump system using geothermal heat, characterized in that the heat exchange within 25-40 ℃.