KR100780460B1 - The cooling and heating system of economic type by heatpumps - Google Patents

Abstract

An economic cooling/heating system using a heat pump is provided to connect a plurality of heat medium storing parts having a plurality of diffusers to a heat pump for resolving unstability and unbalance of temperature control and flow rates during simultaneous operation of heat accumulation tanks. An economic cooling/heating system using a heat pump includes a geothermal energy treating part(10) buried under ground and connected to a heat pump(5) by a circulation pipe for supplying geothermal energy as a heat source, and first and second medium storing parts connected to the heat pump in parallel via circulation pipes. The first and second heat medium storing parts(21,22) respectively have a diffuser(30A-30D) in a dual structure at upper and lower parts for storing circulation medium such as cold and hot water at different temperature layers without interference from each other. The diffuser is connected with the circulation pipes in a multi-step structure. The circulation pipes are mounted with control valves(40) to be opened or closed for the circulation of the cold and hot water. A heat balance treatment part(50) is mounted to the circulation pipes between the first and second heat medium storing parts and the heat pump for emitting surplus heat calory generated by unbalance of temperature between the cold and hot water. A control part(60) controls the operation of the heat pump, the control valve and the heat balance treatment part.

Description

The Cooling and Heating System of Economic Type by heatpumps

1 is a block diagram of an economical heating and cooling system using a heat pump in an embodiment of the present invention.

Figure 2 is a system flow diagram for the heating / hot water supply of the heating system using the first and second media storage unit in the heat storage tank in Figure 1 as an embodiment of the present invention.

3 is a system flow chart of the cooling / hot water supply of the cooling system using the first and second media storage unit in Figure 1 in the embodiment of the present invention as a cold storage tank.

4 is a system flow diagram of a system for storing cooling and hot water for cooling and heating in which the first and second medium storage units are dualized into a heat storage tank and a heat storage cooling tank in FIG. 1 according to an embodiment of the present invention.

5 is a structural diagram of a geothermal treatment unit in an embodiment of the present invention.

6 is a cross-sectional view taken along the line A-A of FIG. 5 in an embodiment of the present invention.

7 is a cross-sectional view taken along the line B-B of FIG. 5 in an embodiment of the present invention.

8 is a schematic cross-sectional view of a dual structure diffuser applied to a medium storage unit used as a heat storage tank or a cold storage tank according to an embodiment of the present invention.

9 is a schematic diagram of a state in which a device for providing a heat source of waste heat is connected to a cooling and heating system using geothermal heat in another embodiment of the present invention.

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

One ; Air conditioner 2; Heating

3; Hot water supply unit 4; Pump

5; Heat pump 10; Geothermal treatment unit

11; Supply line 12; Recovery pipe

13; Insulation 21,22; First and second media storage

30A, 30B, 30C, 30D; Diffuser 31; Tops

32; Lower plate 33; Middle separator

40; Control valve 50; Heat balance processor

51; Temperature sensors 52,53; 1st and 1st pump

54,55; First and second degree valves 60; Control

70,80; First and second pressure holding sections 71,81; 3,4 pump

72,82; 1st and 2nd differential pressure valve 73,83: 1st and 1st temperature control pipe

101; Sewage tank 102; Waste Heat Exchanger

201; Power equipment 301; Air heat pump

401; Supply / Exhaust Waste Heat Recovery

The present invention relates to a cooling and heating system using a heat pump, and more particularly, in a heat pump system that performs cooling and heating using geothermal or waste heat as a heat source, to efficiently process cold water and hot water, and to produce excess heat efficiently. The present invention relates to an economical heating and cooling system using a heat pump.

In general, the heat pump is composed of an evaporator, a compressor, a condenser and expansion valves so that the circulation medium repeats liquefaction and vaporization to perform heating and cooling through other peripherals connected thereto.

Such heat pumps perform cooling and heating using electric energy as a main energy source, but recently, in order to save energy, the heat pump performs cooling and heating using waste heat or geothermal heat as a main heat source.

However, if the heat pump that is cooling and heating with such energy is suddenly stopped due to a failure or the like, the whole system for cooling and cooling is stopped accordingly, which causes a lot of pain for the user. have.

Thus, some users are separately installing a heating and heating device including a boiler to make a duplicate investment in preparation for such a failure of the heat pump.

In addition, since the conventional heat pump consumes energy and performs cooling and heating through its peripheral devices connected to it, it is true that excessive energy is used to burden the user with economical burden.

Therefore, in the related art, the above-mentioned problems are supplemented, and the market is maturing positively in that users can actively utilize low-cost late-night electricity by supplying a thermal heat pump system using a night-time electric power in terms of national power supply. It is becoming.

However, in the conventional heat pump system in which the heat storage tank is applied as described above, all the cold and hot water calories are processed 100% depending on the geothermal holes, so the capacity and quantity of the geothermal holes increase, resulting in excessive construction costs and environmental damage such as groundwater pollution. There is a disadvantage that adversely affects.

That is, in the conventional heat storage heat pump system for using the midnight electricity, since the recovery time of the geothermal hole is delayed, the system cannot be operated normally because the heat pump must process 100% of the heat from the geothermal hole when the heat pump is operated. The COP (Coeficient of Performance) equipment is operated at a low level, and the storage facility can be selected to select only one of cooling and heating. Therefore, the cooling, heating, and hot water supply cannot be used flexibly, and the heat storage unit (heat storage tank) can be efficiently used. There is a disadvantage in that it cannot be utilized 100% of the heat storage system such as redundant investment.

In the related art, a 2-tank heat pump system has been disclosed to compensate for the above problems. However, when the cold water tank (first storage unit) is simply used as a buffer for geothermal recovery, cold water produced by enormous investment is used. As the storage facility (first storage unit) is used inefficiently, the hot water storage facility (second storage unit) has to be designed relatively large, and thus it is inefficiently operated in terms of facility investment.

On the other hand, during cooling, cold water is stored in the cold water storage facility (first storage unit) while relying on 100% geothermal air to store more hot water in the hot water storage facility (second storage unit) and to process hot water calories, or cooling tower By additionally installing a cooling tower, it does not meet the basic intention of geothermal heat, and has a disadvantage in that the investment cost is large. This is because the system concept is designed only without considering the heat balance, and it is a practical problem in operation.

As a result, the current reality is to install a small tank with a buffer concept or just one storage facility. If the heat balance of cold water and hot water use is not equal, the heat pump may be stopped or the cooling operation and the heating operation may be changed from time to time.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, while connecting to a plurality of media storage unit used as heat storage or heat storage function or dualized by heat storage and heat storage function to the heat pump, a plurality of media By constructing a plurality of diffusers in the storage unit, it is possible to solve the problems of temperature control and unbalance in flow rate caused by simultaneous operation of the heat storage tank (or the heat storage cooling tank), and to achieve high efficiency and durability, which is the biggest problem of the facility using geothermal and waste heat. Considering the high price point, the heat storage type bidirectional energy utilization system minimizes the equipment capacity and provides an economical heating and cooling system using a heat pump that improves the inefficiency of increasing the installation quantity of geothermal holes due to the temperature imbalance of cold water and hot water. I want to do that.

Another object of the present invention is to sufficiently secure the geothermal hole recovery time according to the operation of the cooling and heating system while making the most of the waste energy scattered, such as the amount of wastewater or wastewater discharge tank, the heat generated in the electric room, the waste heat of the equipment (compressor, etc.). It is to provide an economical cooling and heating system using a heat pump to increase the efficiency of equipment operation.

In the air-conditioning system using the heat pump of the present invention for achieving the above object, in the air-conditioning unit including an air conditioner, a heating unit, and a hot water supply unit, in connection with a heat-cooling heat pump having an evaporator and a condenser, the heat pump is in the ground The geothermal treatment unit buried to provide geothermal heat as a heat source is connected through a circulation pipe, while the first and second media storage units for storing cold and hot water circulating media are connected in parallel through a circulation pipe, The medium storage unit has a double diffuser in each of the upper and lower parts so that the circulating medium of cold and hot water is stored without interfering with each other in a different temperature layer, the diffuser is connected to the circulation pipe of a multi-stage array, the cold pipe The control valve is opened and closed to circulate the hot water circulation medium, and the circulation pipe between the first and second media storage units and the heat pump is cold, And a heat balance processing unit for discharging excess heat generated by the temperature imbalance of the hot water circulation medium to the geothermal processing unit, wherein the heat pump, the control valve, and the heat balance processing unit are controlled by a control unit.

According to another aspect, the geothermal heat treatment unit is a plurality of supply pipes to change the flow rate so that the heat exchange is made for a sufficient time, and located between the plurality of supply pipes and the lower end is in communication with each other rapidly increasing the flow rate of geothermal recovery heat It is characterized in that the structure is divided into one recovery pipe.

According to another aspect, the first and second media storage unit is used as a heat storage tank for storing the circulating medium of hot water or a cold storage tank for storing the circulating medium of cold water according to the seasonal change, or dualized into the heat storage tank and the cold storage tank. This is characterized in that it is made.

According to yet another aspect, the diffuser is characterized in that configured to be divided into upper, lower and middle isolator is connected to the supply and return circulation pipe, respectively.

According to another aspect, the heat balance processing unit, the cold and hot water produced in the heat pump is stored in the first and second storage units, the temperature of the excess cold, hot water due to the imbalance of the amount of use during use in cooling, heating and hot water A temperature sensor for detecting; First and second open valves having an opening direction determined under a control of a control unit so as to detect a surplus heat amount of cold and hot water from the temperature sensor, so that the excess heat amount can be processed by the geothermal processor; It includes.

According to yet another aspect, the first and second open valves are characterized in that the 3-way valve.

According to another aspect, the return line connecting the air conditioner, the heating unit and the diffuser for the air conditioning is characterized in that the first and second pressure holding unit for heating and cooling under the control of the control unit, respectively.

According to another aspect, the first pressure holding unit for heating includes a third pump, a first differential pressure valve and a first temperature control tube, and the second pressure holding unit for cooling includes a fourth pump and a second differential pressure valve; It characterized in that it comprises a second temperature control tube.

According to another aspect, the third pump is configured such that the driving is turned off after the closing control of the first differential pressure valve is made to block the formation of an air layer on the air conditioner and the heating unit when the heating is stopped,

The first differential pressure valve opens the valve after the third pump is driven to circulate the hot water circulating medium to the air conditioner and the heating unit through the first temperature control pipe and the supply pipe during heating operation to control the pressure of the pipe. Characterized in that the operation is made

According to another aspect of the present invention, the fourth pump has a closing control of the second differential pressure valve so as to prevent the air conditioner, the cooling part, the upper part piping from being formed in the air conditioner during the driving time of the second differential pressure valve during cooling stop. After the pump is configured to stop driving,

The second differential pressure valve circulates the cold water circulation medium to the air conditioner through the second temperature control pipe and the supply pipe during the cooling operation so that the opening operation of the valve is performed after the operation of the fourth pump is started to control the pressure. It is characterized in that for blocking the inflow of air due to falling water of the pipe.

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

1 is a block diagram of an economical heating and cooling system using a heat pump according to an embodiment of the present invention, Figure 2 is an embodiment of the present invention heating / hot water supply of a heating system using the first and second media storage unit in the heat storage tank in Figure 1 This is a system flow diagram for.

3 is a system flow chart for cooling / hot water supply of a cooling system using the first and second media storage units as a cold storage tank in FIG. 1 according to an embodiment of the present invention, and FIG. 4 is an embodiment of the present invention. , 2 is a system flow diagram of a system for storing cooling and hot water for cooling and heating in which a media storage unit is dualized into a heat storage tank and a heat storage cooling tank, respectively.

5 is a structural diagram of a geothermal processing unit according to an embodiment of the present invention, Figure 6 is a cross-sectional view taken along line AA of Figure 5 as an embodiment of the present invention, Figure 7 is a cross-sectional view taken along line BB of Figure 5 as an embodiment of the present invention. 8 is a schematic cross-sectional view of a double structure diffuser applied to a medium storage unit used as a heat storage tank or a cold storage tank according to an embodiment of the present invention.

1 to 8, a cooling and heating system using a heat pump according to an embodiment of the present invention, the circulation pipe for supplying and returning to the air conditioner 1, the heating unit 2 and the hot water supply unit 3 ( L1, L2, L2 ', L2 ", L3, L3', L3", L4, L5, L6, L7, L7 ', L8, L8', L9, L9 ', L10, L10', L11, L11 ', L12 , L12 ', L20, and L20' through the heat pump 5 having the evaporator (not shown) and the condenser (not shown) connected to each other, the first and second media storage unit in the heat pump (5) (21) (22) are connected in parallel via circulation pipes (L5, L6) (L4, L4 ') (L20) (L20'), while the geothermal processing unit (10), diffuser (30) and control valve (40). ), The heat balance processing unit 50, and the control unit 60 for controlling the overall operation of the heating and cooling system using a heat pump and the first and second pressure holding units (70) (80).

The geothermal processing unit 10 is buried in the ground to provide a heat source by geothermal heat in the air-conditioning system, or the surplus generated due to the temperature imbalance of the cold and hot water circulation medium in the first and second media storage units (21, 22) By processing (cooling or heating) the heat amount, the circulation pipes L20 and L20 '(L3, L3' and L3 ") of the supply line where the supply header h1 is arranged and the return water where the return header h2 is arranged It is connected to the heat pump 5 and the first and second media storage parts 21 and 22 through circulation lines L20 and L20 '(L2 and L2') and L2 ".

At this time, the geothermal heat treatment unit 10 has a plurality of supply pipes 11 and one recovery pipe located at the center of the plurality of supply pipes 11 so as to change the flow rate and widen the heat exchange area to improve the heat recovery capacity per unit time. It is divided into (12), the supply pipe 11 and the recovery pipe 12 is communicated at the lower end, the heat insulating material 13 is configured between the supply pipe 11 and the recovery pipe 12, the supply pipe It is configured to prevent heat exchange between the 11 and the recovery pipe 12.

That is, the knitting of the supply pipe 11 into a plurality of pipes maximizes the heat transfer area (heat exchange area) and lowers the flow rate of the fluid, thereby extending the residence time in the geothermal heat treatment unit 10, thereby improving heat exchange efficiency. Since the supply pipe 11 acts as a heat exchanger, the heat exchanged fluid is recovered through the adiabatic and insulated recovery pipe 12 located at the center by moving the fluid from the ground surface to the deep portion, and the heat exchange loss with the ground surface generated during the recovery process. This is to prevent.

The first and second media storage units 21 and 22 store and discharge cold and hot water circulating media, and can be used as a refrigerating tank in summer only for cooling, and as a heat storage tank in winter only for heating. Its use is possible, and in the seasons such as spring / autumn, it is possible to use the heat storage tank economically by dualizing it into heat storage tank and cold storage tank, and by the diffuser 30A, 30B, 30C, 30D, There is an upper and lower temperature stratification in which temperatures are different from each other and mutual interference is prevented, which is not connected to only one storage unit 21 or 22 to geothermal heat, but the first and second media storage units 21 and 22. After the parallel connection is connected to the geothermal processing unit 10 is configured to be able to process the remaining amount of excess heat written in either of the geothermal processing unit 10.

That is, the first and second media storage units 21 and 22 connected in parallel may use the land as a heat storage warehouse concept while minimizing the geothermal processing unit 10, and may use hot and cold water for each time zone. Because sometimes the heat is sent to the geothermal heat treatment unit 10, hot water, such as hot water is configured to circulate the excess cold water to take out the heat and use it again, accordingly the geothermal heat treatment unit 10 can also function as a temporary heat storage warehouse It is composed.

The diffuser 30A, 30B, 30C, 30D is formed of a double layer consisting of an upper plate 31 and a lower plate 32 and an intermediate separator 33 separating the upper and lower plates 31 and 33. As a structure, the cold and hot water circulating media stored and discharged in the first and second medium storage parts 21 and 22 do not interfere with each other at different temperatures, that is, the first and second medium storage parts 21 and 22. ) Between the cold and hot water circulation medium supplied from the air conditioner (1) and the heating unit (2) and the hot water supply unit (3) on the load side and the cold and hot water produced from the heat pump (5), or the heat pump (5). In order to solve the phenomenon of temperature layer destruction caused by the interference of the circulating medium flowing into the air conditioner (1) or the circulating medium returned from the heating unit (2), the upper and lower plates (31) ( It is configured to separate the bilayer in 32) to fundamentally eliminate mutual interference.

The control valve 40 is disposed in the circulation pipe (L20, L20 ') of the multi-stage arrangement structure connected to the diffuser (30A) (30B) 30C (30D), as well as the circulation pipe of the whole system for heating and cooling ( L4, L4 '), L5, L6, and L13, and the first and second temperature control tubes 73 and 83 which will be described later, and the circulation tubes L20 and L20' of the multi-stage arrangement structure. The circulation medium of cold and hot water guides the supply to the air conditioner (1), the heating unit (2), and the hot water supply unit (3), which are cooling and heating units, or the heat and circulation of cold and hot water circulation medium returned from the cooling and heating unit. It is configured to change the direction to circulate to (5), and to be opened and closed under the control of the control unit 60 to operate according to the seasonal operation mode according to the cooling and heating.

The heat balance processor 50 releases the excess heat of cold and hot water, which is exceeded when the temperature of the cold and hot water circulating media stored in the first and second media storage units 21 and 22 is unbalanced, thereby cooling the heat of the cold and hot water. In addition to maintaining the balance, it is configured to minimize the geothermal consumption of the geothermal heat treatment unit 10, the circulation pipe connecting the heat pump (5) and the first and second media storage (21, 22) ( L2, L2 ', L2 ") (L3, L3'L3"), the temperature sensor 51, the first and second pumps 52 and 53, and the first and second opening valves 54 ( 55).

The temperature sensor 51 detects the temperature of the hot and cold water flowing in the first and second media storage units 21 and 22 and the plurality of circulation pipes and sends a signal to the controller 60 to the controller 60. By controlling the speed of the first and second pumps 52 and 53, it is possible to produce cold and hot water in accordance with the set temperature, and when only cold or hot water is used, the low and high cold and hot water is more than necessary. 10) by detecting the heat pump production temperature so as not to supply to the control unit 60 to notify the control unit 60, the circulation pipe located in the return line of the cold and hot water circulation medium, as well as the circulation pipe connected to the discharge side of the heat pump (5) (L3 ") or L1, or the first and second media storage sections 21 and 22 are provided in close proximity.

The first and second pumps 52 and 53 control the control of the control unit 60 to circulate forced circulation of cold and hot water in which excess heat is generated according to the temperature checked by the temperature sensor 51. The selective drive is performed, and is comprised in the inflow-side circulation pipes L2 and L2 "of the heat pump 5.

That is, the first and second pumps 52 and 53 may vary in speed by the control signal of the controller 60 to circulate the circulation medium of cold and hot water, as well as to control the temperature of the produced cold and hot water. It is used to do so.

The first and second open valves 54 and 55 are interlocked with the circulating medium direction change by the temperature sensor and the control valve 40 of the first and second storage medium sections 21 and 22, and the seasonal operating condition program Under the control of the control unit 60 to release the circulation medium of cold and hot water to the geothermal heat treatment unit 10 by the opening direction is determined, the diffuser (30A) 30B (30C) (30D) and geothermal It consists of a 3-way valve arranged in circulation pipes L2, L2 '(L3, L3') (L11, L11 ') (L12, L12') connected between the processing units 10.

The control unit 60 includes a plurality of control valves 40, an evaporator and a condenser in the first and second media storage units 21 and 22, and a first and second pressure maintaining units 70 and 80 that are applied to a cooling and heating system. Of the first and second pumps 52 and 53 and the first and second degree opening valves based on the sensed information of the temperature sensor 51 included in the heat balance processor 50. It is responsible for intelligent operation of the whole system, such as control signals for determining the opening direction of (54) and (55).

Here, the control valve 40 is composed of an on / off valve that is opened and closed by the control signal of the control unit 60.

The first and second pressure holding units 70 and 80 return the air conditioner 1, the heating unit 2, and the diffuser 30A, 30B, 30C, and 30D for cooling and heating. It is connected to the line (L7, L7 ') (L10, L10'), the first pressure holding part 70 is the third pump 71, the first differential pressure valve 72, the first temperature control pipe for heating (73), the second pressure holding unit (80) includes a fourth pump (81), a second differential pressure valve (82), and a second temperature control tube (83) for cooling.

The third pump 71 is the air conditioner 1, the heating unit 2 and the water in the upper pipe during the operation time of the first differential pressure valve 72 when the heating stops the first and second media storage unit 21 The third pump 71 is stopped after the closing control of the first differential pressure valve 72 is preceded in order to prevent the water layer from falling down to 22 and forming an air layer.

 The first differential pressure valve (72) operates the third pump (71) during the heating operation to pass the hot water from the first and second media storage parts (21, 22) through the circulation pipe (L7). After the pressure is formed in the first pressure holding unit 70 by circulating to the heating unit 2, the first differential pressure valve 72 is opened to perform an open control operation, and the third pump 71 is driven. And the opening and closing operation of the first differential pressure valve 72 is controlled from the control operation program of the control unit 60.

In addition, the fourth pump 81 is the air conditioner (1) and the water in the cooling unit and other cooling and upper pipes during the driving time of the second differential pressure valve 82 when the cooling stops the first and second media storage unit (21) The fourth pump 81 is stopped after the closing control of the second differential pressure valve 82 is preceded in order to prevent the water layer from falling down to 22 and forming an air layer.

 The second differential pressure valve 82 operates the fourth pump 81 during the cooling operation so that the cold water of the first and second media storage units 21 and 22 is circulated through the circulation pipe L7 '. ) And the second differential pressure valve (82) to open control operation after the pressure is formed in the second pressure holding unit 80 by circulating to the cooling unit, the drive and the second of the fourth pump (81) The opening and closing operation of the differential pressure valve 82 is controlled from the control operation program of the control unit 60.

That is, the first and second differential pressure valves 72 and 82 are for preventing falling water, and when the third and fourth pumps 71 and 81 are stopped, the reaction of the first and second differential pressure valves 72 and 82 is stopped. Air conditioner (1), heating unit (2), etc. for the time {the time required for the third and fourth pumps (71) (81) to stop until the first and second pressure relief valves (72) (82) are completely shut off). It prevents the water of the cooling load facility and the pipe located in the upper part from flowing into the first and second media storage parts 21 and 22, and the air conditioner 1, the heating part 2 and When air flows into the circulation pipes L10 and L10 ', the head loss of the third and fourth pumps 71 and 81 increases and affects the circulation of the cold and hot water when the cooling and heating system is restarted. This can be done to prevent damage.

Hereinafter, reference numeral 4, which is not described, shows a pump installed in the circulation pipe L11 'of the geothermal heat treatment unit 10, which is selectively positioned.

The operation according to the embodiment of the present invention configured as described above is summarized as follows with reference to FIGS. 1 to 8.

First, as shown in FIGS. 1 and 2, in order to provide winter heating and hot water supply through the air conditioner 1 for heating, the heating unit 2, and the hot water supply unit 3, the control unit 60 maintains the first pressure. After driving the third pump 71 included in the unit 70, the first differential pressure valve 72 is opened.

Then, the third pump 71 is driven so that the circulating medium is heated in the air conditioner 1 through the supply header h1 and the circulation pipe (L7 → L8) of the supply line and then with the return header h2. The circulating medium of the hot water returned through the circulation pipe (L9 → L10) of the return line is the lower diffuser of the second medium storage unit 22 or the first medium storage unit 21 through the multi-stage circulation pipe (L20). 30D) through 30B.

Next, when the temperature of the hot water circulating medium returned through the circulation pipe (L10) of the return line is high after the heating is detected by the temperature sensor 51 provided in the circulation pipe (L10) to the control unit 60 Output bar,

The control unit 60 proportionally controls the control valve 40 provided in the first temperature control tube 73 to control the circulating medium of the high temperature hot water through the first temperature control tube 73 through the third pump 71. The amount of heat of the second medium storage unit 22 is saved by supplying the water to the suction side, and the circulation medium of the hot water recovered at a high temperature is prevented from being recovered to the second medium storage unit 22.

At this time, the normal circulation process for the hot water circulation medium, the second medium storage unit 22 → the upper diffuser (30C) → the third pump (71) → the circulation line (L7) of the supply line → supply header (h1) → Circulation pipe (L8) → Air conditioner (1) → Circulation pipe (L9) → Return header (h2) → Recirculation pipe (L10) → First differential pressure valve (72) → Multiple configuration circulation pipe (L20) → the lower layer through the diffuser (30D) is stored in the lower end of the second medium storage unit 22, wherein the circulation pipe (L20) connected to the second medium storage unit 22 is a multi-stage arrangement structure. Having a, when the flow of the hot water circulation medium is guided to the circulation pipe (L20), the control unit 60 selectively opens and controls a plurality of control valves 40 disposed in the circulation pipe (L20), Accordingly, the hot water circulating medium is returned and stored through the upper plate 31 of the diffuser 30D positioned below the second medium storage unit 22.

Next, when the temperature of the hot water circulating medium returned through the first differential pressure valve 72 is high, the temperature sensor 51 disposed in the circulation pipe L10 is installed in the first temperature control pipe 73. The control valve 40 is opened (proportional control) to supply the circulating medium of hot water to the suction side of the first pump 71 through the first temperature control tube 73, and at a high temperature through the circulation tube L20. It is to prevent the return of the circulating medium of the hot water is returned to the second medium storage unit (22).

At this time, in order to maintain the supply temperature of the hot water circulating medium to the air conditioner 1 and the heating unit 2, the hot water sucked from the second medium storage unit 22 and the first temperature control tube 73 In order to properly dilute the circulating medium returned through the control unit, the control unit 60 controls the plurality of control valves 40 arranged in the circulation pipe L20 having a multi-stage arrangement structure to selectively open and close.

Next, when hot water is stored in both the first medium storage unit 21 and the second medium storage unit 22 during the winter, in parallel between the first and second medium storage units 21 and 22. The installed circulation pipes L5 and L6 are used as parallel pipes of high temperature water, and another circulation pipes L4 and L4 'are two low temperature water circulation pipes and two first and second medium storage parts 21 and 22. Are connected in parallel to perform a single storage unit (heat storage tank) function, according to the temperature stratification phenomenon that the two heat storage tank can be operated as a single heat storage tank.

In this case, as shown in FIGS. 1 and 3, the plurality of control valves 40 configured in the multi-stage circulation line L20 ′ connected to the first medium storage unit 21 are selected by the heating mode of the control unit 60. As a result, the first medium storage unit 21 is heated and heated with hot water supply as a result of being combined with the second medium storage unit 22.

Here, the circulation medium supplied from the second pump 53 to the evaporator of the heat pump 5 during the heating-only operation as described above becomes cold water and absorbs heat from the geothermal processing unit 10 or the waste heat exchanger to heat it. It is supplied to the pump and can be utilized as equipment cooling water or electric room cooling.

 In addition, the cold water circulation medium sucked from the lower plate 32 of the lower diffuser 30B or 30D of the first medium storage unit 21 and the second medium storage unit 22 may include a circulation pipe having a multi-stage arrangement structure. In the selective opening and closing operation of the control valve 40 disposed at L20 and L20 ', the water is circulated to the heat pump 5 through the circulation pipes L2 and L2 " It is stored in the first and second media storage units 21 and 22 through the lower plate 32 of the upper layer diffusers 30A and 30C of the units 21 and 22.

At this time, when heating using geothermal heat, the second opening valve 55 of the 3-way valve type included in the heat balance processor 50 is supplied from the circulation pipe L2 'by the control operation program of the controller 60. (h1) and the opening in the direction in which the flow of the cold water circulation medium is guided to the geothermal processing unit 10, the first opening valve 54 of the 3-way valve type is controlled by a control operation program of the control unit 60. Opening is made in the flow direction in which the geothermal heat treatment unit 10 absorbs heat and supplies absorption heat to the heat pump 5 through the return header h2 and the circulation pipe L2.

That is, the above contents are summarized as the circulating medium of the cold water discharged from the heat pump 5 at a low temperature in the circulation pipe (L3 ") → circulation pipe (L3 ') → second opening valve 55 → circulation pipe ( L11) → Supply header (h1) → Circulation pipe (L11 ') of heat exchange function → Geothermal heat treatment unit (10) → Circulation pipe (L12') → Return header (h2) → Circulation pipe (L12) → First opening valve ( 54) → the circulation pipe (L2 ') → the second pump 53 is guided back to the flow of the heat pump (5), wherein the cold water generated during the heating is to heat exchange in the geothermal heat treatment unit (10).

In other words, the circulating medium that absorbs geothermal heat while passing through the supply pipe 11 and the recovery pipe 12 of the geothermal processing unit 10 and rises in temperature as described above, is evaporator of the heat pump 5 through the second pump 53. The low-temperature liquid refrigerant is circulated to the low-temperature gas to be vaporized and transferred to the compressor. The high-temperature high-pressure gas is generated by the compressor, and the middle temperature of the lower part of the reservoir supplied from the first pump 52 and the circulation pipe L2 in the condenser. The lower plate of the diffuser 30C installed in the upper layer of the second medium storage unit 22 that converts the water into high temperature water and uses the heat storage tank through the circulation pipe L20 having the multi-stage arrangement structure of the second medium storage unit 22. It is stored through 32.

At this time, the circulation medium of the hot water heated to a high temperature as described above is stored above the second medium storage unit 22 used as the heat storage tank, as well as the first medium storage unit 21 by the parallel circulation pipe (L5). Through the lower plate 32 of the upper diffuser (30A) of the, is stored in the first medium storage unit (21).

Then, the first and second media storage units 21 and 22 used as the heat storage tanks are different from each other through the double diffusers 30A, 30B, 30C, and 30D respectively installed on upper and lower layers therein. The circulating medium of the hot water forming the temperature layer can be stored without mutual interference.

On the other hand, the hot water circulating medium discharged through the upper plate 31 of the diffuser 30C installed in the upper layer in the second medium storage unit 22 is the circulation pipe (L7) → by the pumping operation of the third pump (71) → Supply header (h1) → circulation pipe (L8) is supplied to the air conditioner (1) and the heating unit (2) to be heated, and another heat exchanger for hot water supply through another circulation pipe (not shown) It is supplied to (3) to be able to heat hot water for hot water supply.

Here, the temperature sensor 51, the first and second pumps 52 and 53, and the first between the first and second medium storage units 21 and 22 and the heat pump 5 used as the heat storage tank. Since a heat balance processing unit 50 including two opening valves 54 and 55 is configured, and a temperature sensor (not shown) is installed inside the first and second medium storage units 21 and 22, Due to this, the heat storage and use state of the heat storage tank may be sensed by the controller 60 to determine the start and stop of the heat pump.

At this time, the control unit 60 is the first and second degrees so that the circulation is freely made when the cold, hot water circulating medium in which excess heat is generated from the pumping operation of the first and second pumps 52 and 53 is forcedly circulated. The opening direction of the valves 54 and 55 is controlled.

On the other hand, Figure 3 is the temperature of the cold, hot water circulating medium is lowered to a low temperature due to the cooling cycle during the cooling, heating and cooling heat pump (5) during compression, condensation, expansion, evaporation during the summer time, The low-temperature circulating medium shows a flow chart for performing cooling through the air conditioner 1, which will be described in more detail with reference to FIGS. 1 and 3.

That is, referring to FIGS. 1 and 3, when it is desired to provide summer cooling through the air conditioner 1 for heating and cooling, the control unit 60 includes the fourth pump 81 included in the second pressure holding unit 80. ) And open the second differential pressure valve 82.

Then, in the air conditioner 1 from the driving of the fourth pump 81, the circulation medium returned through the circulation pipe L9 'and the return header h2 and the circulation pipe L10' of the return line is arranged in multiple stages. The first medium storage unit 21 is returned to the first medium storage unit 21 through the circulation pipe L20 ', which is a first medium storage unit 21 → a lower diffuser 30B → a fourth pump 81 → a supply line. Circulation pipe (L7 ') → Supply header (h1) → Circulation pipe (L8') → Air conditioner (1) → Circulation pipe (L9 ') → Return header (h2) → Circulation pipe (L10') of the return line → The second differential pressure valve 82 → the circulation pipe L20 ′ → is stored at the upper end of the first medium storage unit 21 through the upper diffuser (30A).

At this time, the circulation pipe (L20 ') connected to the first medium storage unit 21 has a multi-stage structure, when the flow of the cold water circulation medium to the circulation pipe (L20'), the control unit 60 ) Selectively opens and closes and controls a plurality of control valves 40 disposed in the circulation pipe L20 ', whereby the cold water circulation medium is located in the upper layer in the first medium storage unit 21A. It is stored through the bottom plate 32 of.

In addition, another circulation pipe L5 branched from the circulation pipe L20 'connected to the upper plate 31 of the upper diffuser 30A has a parallel structure with the first medium storage part 21 used as the cold storage tank. It is connected to the lower plate 32 of another diffuser (30C) provided in the upper layer in the second medium storage unit 22 forming a.

Therefore, the circulating medium returned through the circulation pipe L10 'of the return line has an upper side in the first medium storage unit 21 through the upper diffuser 30A to which the circulation pipe L20' of the multi-stage arrangement is connected. Are stored in.

Here, as shown in FIGS. 1 and 2, all of the plurality of control valves 40 configured in the multi-stage circulation pipe L20 connected to the second medium storage unit 22 are all closed from the control operation of the control unit 60. Accordingly, the first medium storage unit 21 and the second medium storage unit 22 are used only for storage and cooling of cold water for cooling like one tank.

That is, the circulation medium recovered from the upper plate 31 of the diffuser 30A provided on the upper layer of the first medium storage unit 21 is guided to the heat pump 5 from the selective opening and closing operation of the control valve 40.

Then, the liquid refrigerant of the evaporator is vaporized with the medium temperature cold water heat flowed into the heat pump 5 from the upper diffuser 30A and circulated through the condenser through the compressor to the geothermal heat treatment unit 10 while being heat-exchanged with underground heat. It radiates heat.

At this time, when cooling using geothermal heat, the second opening valve 55 of the 3-way valve type included in the heat balance processor 50 is supplied from the circulation pipe L3 by a control operation program of the controller 60. h1) and the geothermal processing unit 10 is opened in the direction in which the flow of the circulating medium is guided, and the first opening valve 54 of the 3-way valve type is controlled by the control operation program of the control unit 60. In (10), the opening is made in the direction in which the flow of the circulating medium is guided to the return header h2 and the circulation pipe L2.

And, the geothermal heat treatment unit 10 is composed of a plurality of supply pipe 11 and one recovery pipe 12,

In the cooling and heating heat pump 5, a high temperature circulation medium is transferred to the geothermal heat treatment unit 10 through a circulation pipe L3 → a second opening valve 55 → a supply header h1.

The geothermal heat treatment unit 10 is composed of a plurality of supply pipes 11 and one recovery pipe 12 insulated on the outside, and the supply pipe 11 and the recovery pipe 12 communicate with each other at the lower end thereof. As the circulating medium passing through the supply pipe 11 at a slow flow rate is concentrated in the recovery pipe 12, the flow rate is rapidly increased.

That is, the refrigerant gas vaporized by recovering heat to produce cold water in the evaporator of the heat pump 5 transfers the heat to the condenser through the compressor, and the heat is circulated by the first pump 52 to provide a circulation pipe (L3). Through heat exchange with the geothermal heat while passing through the supply pipe 11 and the recovery pipe 12 of the geothermal heat treatment unit 10 through the second opening valve 55 and the supply header (h1) through the lower temperature, as described above The circulating medium having a lower temperature is circulated to the heat pump 5 through the return header h2 → the first opening valve 54 → the circulation pipe L2, and the geothermal processor 10 is cooled at a cooling load. It will process the transferred heat.

At this time, the circulating medium (cold water) dropped to the low temperature in the evaporator of the heat pump 5 is a diffuser (30B) installed in the lower layer of the first medium storage unit 21 used as a cold storage tank through the circulation pipe (L20 '). Is stored through.

At this time, the circulation medium stored under the first medium storage unit 21 is connected to the second medium storage unit through the circulation pipes L4 and L4 'installed below the first medium storage unit 21. In parallel with 22) two storage units are operated as a single reservoir,

The first and second media storage units 21 and 22 used as the cold storage tanks have different temperatures through the double diffusers 30A, 30B, 30C, and 30D respectively installed on the upper and lower sides thereof. Layered cold water circulation media can be stored without mutual interference.

On the other hand, the low temperature cold water circulation medium discharged through the lower plate 32 of the diffuser 30B provided in the lower layer in the first medium storage unit 21 is the circulation pipe of the supply line from the pumping operation of the fourth pump 81 ( L7 ') → Supply header (h1) → Circulation pipe (L8') to supply to the air conditioner (1) to perform cooling after circulation pipe (L9 ') → Return header (h2) → Circulation pipe of the return line ( L 10 ′) is recovered to the lower plate 32 of the upper diffusers 30A and 20C of the first and second media storage units 21 and 22.

Here, the temperature sensor 51, the first and second pumps 52, 53, and the first between the first and second medium storage units 21, 22 and the heat pump 5 used as the cold storage tank. The heat balance processing unit 50 including one or two opening valves 54 and 55 is configured,

Whether the cold water is determined by the temperature sensor 51 is determined, and when the temperature of the cold water stored in the first and second medium storage units 21 and 22 is increased, the control unit 60 of the heat pump 5 When the start command is given and the cold water is completely stored in the first and second medium storage units 21 and 22, the operation of the heat pump 5 is automatically stopped.

That is, the first, second and second pumps 52 and 53 are interlocked continuously when the heat pump 5 is operated, and the inverter type pump can adjust the circulation flow rate by sensing the temperature of the temperature sensor 51. It is designed to reduce energy circulation by preventing flow circulation more than necessary, and as a seasonal factor, it operates the hot water temperature as low as possible during cooling, and conversely, it can be caused by the super cold phenomenon that can be caused by operating the cold water temperature too low when operating exclusively for winter heating. The control unit 60 is controlled by the control program to adjust the set value of the heat pump outlet temperature (cold, hot water) in order to prevent freezing of the evaporator and low efficiency operation.

FIG. 4 illustrates that when cold water and hot water are used in a season such as spring / autumn, the first medium storage unit 21 stores cold water, and the second medium storage unit 22 stores hot water. 1 and 4, all valves operate to store the cold water and hot water produced around the heat pump 5 and easily heat balance the surplus cold water or hot water due to the difference in usage when the change season operation mode is set at 60. Through the treatment unit 50 can be heat-dissipated or cooled by geothermal holes, so that only a minimum of heat is exchanged with geothermal heat, thereby reducing the dependence of the geothermal processing unit 10, as well as making the operation of the system efficient.

That is, the second and first opening valves 55 and 54 in a direction in which excess heat is generated by the temperature sensor 51 of the first medium storage unit 21 and the temperature sensor 51 of the second medium storage unit during the season change operation. ) Is operated to reduce the amount of excess heat to the geothermal heat treatment unit (10).

As described above, the present invention can not efficiently use the heat storage tank manufactured by investing enormous facility cost as the general heat pump system is composed of one-way operation center during cooling or heating. The unit 22 cannot be utilized, and a lot of hot water must be produced and stored when heating, but since the first medium storage unit 21 needs to be simply used as a waste heat recovery tank, a lot of hot and cold water can be produced and produced by inexpensive late night electricity. It is a feature to improve the problem that it does not solve the nature of the heat storage type that is stored and used during the day when the electric charge is expensive.

Hereinafter, the description of the operation cycles of cooling and heating may refer to FIGS. 1 to 3, which are embodiments of the present invention, and thus redundant descriptions thereof are omitted.

On the other hand, Figure 9 is another embodiment of the present invention, which relates to a heating and cooling system utilizing waste heat.

That is, another embodiment of the present invention utilizes waste heat according to the installation location, and waste heat from the waste water when the waste water flows into the sewage tank tank 101 into the supply header h1 and the return header h2. Plate or shell and tube type heat exchanger 102 is connected through circulation pipes L16 and L17 to be used as a heat source for cooling and heating, or a substation facility (transformer / AVR / UPS / breaker / Bus-). Air heat heat that connects waste heat generated from power equipment 201 such as a bar, a generator and a power plant through a circulation pipe L14 to circulate cold and hot water circulating media using air as a heat source. The pump 301 is connected through a circulation pipe (L15) (15 '), and the exhaust part of the boiler room or the parking lot exhaust facility of a common house or a large building, the exhaust facility of a living facility, and the air supply / exhaust facility for indoor ventilation To release excess calories and recover the required calories. To make, it can be used for ventilation supply / exhaust heat recovery unit 401, exhaust heat (flue gas) to connect the heat exchange facilities through the circulation pipe (L18), (L19) in containing the heat source.

At this time, the exhaust heat of the boiler room is a high temperature it is possible to ensure the waste heat by the heat exchanger or water-cooled heat exchange method.

In particular, the method of connecting the air heat heat pump to the heat balance processing unit 50 breaks the conventional idea that the air heat heat pump 301 must produce heat directly beyond the conventional accident. It is a concept that is used instead of the geothermal heat treatment unit 10, the investment cost is low compared to the geothermal heat treatment unit 10, the heat dissipation effect is excellent, easy to maintain, can freely compensate for the shortage of cold or hot water geothermal and air heat The harmony of the two can complement each other's shortcomings.

In general, when constructing a geothermal heat pump cooling and heating system, there is a problem in the heat release effect of the geothermal heat treatment unit 10 in summer, but a cooling tower is installed. However, a cooling tower is also required if the air heat heat pump 301 is installed. This is because the geothermal heat treatment unit 10 can be reduced and stable and efficient cooling and heating are possible.

In addition, although the present invention is not shown in the drawings, it is possible to use waste heat generated in the factory, which is a constant temperature of the Clean Room. Various types of waste heat can be used, such as Process Cooling Water, Compressor Cooling Water, Scrubber Boiler Exhaust Heat, Incinerator Waste Heat, Electric Waste Heat, Workplace Waste Heat Freezer Cooling Water Waste Heat, Gas Turbine Flue Gas Waste Heat, etc. It can also be used as.

As described above, the present invention connects and configures a plurality of medium storage units that are used as heat storage or heat storage functions in a heat pump or is dualized by heat storage and heat storage functions, and comprises a plurality of diffusers in each of the plurality of medium storage parts. This eliminates the problems of temperature control and flow imbalances caused by simultaneous operation of heat storage tanks (or cold storage tanks), and utilizes heat storage bidirectional energy to improve the problems of geothermal and waste heat utilization facilities in terms of efficiency and durability but excessive construction costs. The system minimizes the equipment capacity and improves the problem of increasing the installation quantity of geothermal holes due to the temperature imbalance of cold and hot water, while the heat of sewage and wastewater discharge tanks, the heat generated from the electric chamber, the waste heat of equipment (compressor, etc.) Of the heating and cooling system while maximizing the waste energy It contributes to the spread of economic geothermal heat storage cooling and heating facilities to increase the efficiency of equipment operation by securing sufficient recovery time of geothermal air according to the operation, and improves customer satisfaction by reducing construction cost and rationalization of operation technology, and various waste heat and waste gas. By connecting waste energy systematically, it is possible not only to prevent the spread of environmental damage, but also to produce an enormous economic effect.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (15)

In connecting the air-conditioning heat source heat pump having an evaporator and a condenser to a cooling and heating unit including an air conditioner, a heating unit and a hot water supply unit, The heat pump is connected to the ground heat treatment unit buried in the ground to provide geothermal heat as a heat source through a circulation pipe, while the first and second media storage units for storing cold and hot water circulation media are connected in parallel through the circulation pipe. , In the first and second media storage unit, a diffuser having a double structure is formed on the upper and lower sides so that cold and hot water circulating media are stored without interfering with different temperature layers. The diffuser is connected to the circulation pipe of a multi-stage arrangement, the circulation pipe constitutes a control valve that is open and closed for the circulation of cold and hot water circulation medium, The circulation pipe between the first and second media storage units and the heat pump comprises a heat balance processing unit for discharging excess heat generated by temperature imbalance of cold and hot water circulation medium to the geothermal heat treatment unit. The heat pump, the control valve and the heat balance processing unit economical heating and cooling system using a heat pump, characterized in that the operation is controlled by a control unit. The method of claim 1, wherein the geothermal treatment unit, One of the plurality of supply pipes to change the flow rate so that the heat exchange is made for a sufficient time, and the lower end is in communication between the plurality of supply pipes so that the geothermal heat recovery can be transferred to the heat pump without loss while rapidly increasing the flow rate Heating and cooling system using a heat pump, characterized in that the structure is divided into a recovery pipe. The method of claim 1, wherein the first and second media storage unit, It is used as a heat storage tank that stores circulation media of hot water or a cold storage tank that stores circulation media of cold water according to seasonal changes, or a circulation pipe (piping) and a control system configured to be dualized into a heat storage tank and a cooling storage tank to be used. Economical heating and cooling system using a heat pump, characterized in that. The intermediate separator is provided between the upper plate and the lower plate as a facility for preventing the thermal stratification of the load side and the heat storage tank between the load side and the heat storage tank and the heat medium circulated between the heat pump and the heat storage tank without mutual interference. Economical heating and cooling system using a heat pump, characterized in that the structure of a multi-layer diffuser. The method of claim 1, wherein the heat balance processing unit, A temperature sensor installed in the first and second storage units to generate excess cold and hot water due to an imbalance of the amount of usage of the cold water and the hot water produced by the heat pump during the cooling, heating, and hot water supply; The control unit when the opening and closing control of the control valve is installed in the circulation pipes of the first and second storage units so that the excess heat amount can be circulated to the geothermal heat treatment unit when the temperature of the excess heat amount of cold and hot water is sensed by the temperature sensor. First and second opening valves in which the opening direction is automatically selected and determined under the control of the first and second opening valves; Economic type heating and cooling system using a heat pump comprising a. The heating and cooling system using a heat pump according to claim 5, wherein the control temperature sensors are installed in the first and second storage units, respectively, so that the temperature change of the heat storage tank and the heat storage cooling tank can be linked with the central control unit. The heating and cooling system using a heat pump according to claim 5, wherein the first and second opening valves are 3-way automatic valves. The method of claim 1, A return line is connected to the air conditioner, the heating unit, and the diffuser for cooling and heating. The return line comprises a first and second pressure holding units for heating and cooling under the control of the control unit, respectively. The method of claim 8, The first pressure holding unit for heating includes a third pump, a first differential pressure valve, and a first temperature control tube, and the second pressure holding unit for cooling includes a fourth pump, a second differential pressure valve, and a second temperature control tube. Heating and cooling system using a heat pump comprising a. The method of claim 9, The third pump is configured such that the driving is turned off after the closing control of the first differential pressure valve is made so as to block the formation of an air layer in the air conditioner and the heating unit when the heating is stopped. The first differential pressure valve opens the valve after the third pump is driven to circulate the hot water circulating medium to the air conditioner and the heating unit through the first temperature control pipe and the supply pipe during heating operation to control the pressure of the pipe. Economic cooling and heating system using a heat pump, characterized in that made. The method of claim 9, The fourth pump stops driving after the closing control of the second differential pressure valve is performed to prevent the air layer from being formed in the air conditioner, the cooling unit, and the upper pipe during the driving time of the second differential pressure valve during the cooling stop. To be configured. The second differential pressure valve circulates the cold water circulation medium to the air conditioner through the second temperature control pipe and the supply pipe during the cooling operation so that the opening operation of the valve is performed after the operation of the fourth pump is started to control the pressure. Economic air-conditioning and heating system using a heat pump, characterized in that for blocking the inflow of air due to falling water of the pipe. The method of claim 1, The geothermal processing unit is connected to the supply header and the return header, The supply header and the return header is characterized in that the heat exchanger of the plate-type or shell-and-tube (SHELL and TUBE) type is connected through a circulation pipe so as to utilize various heat sources such as living sewage, waste water, heavy water, and ground water for heating or cooling. Economical cooling and heating system using heat pump. The method of claim 1, The geothermal processing unit is connected to the supply header and the return header, The supply header and the return header, Economic heating and cooling system using a heat pump, characterized in that the air heat heat pump connected to produce a heat source while radiating excess heat source to the outside during heating, to produce a heat source while radiating excess heat to the atmosphere during cooling. The method of claim 1, A supply header and a return header are connected to a circulation pipe of the first medium storage unit used as a storage cooling tank or a heat storage tank. In the supply header and return header, equipment waste heat generated from substation equipment (transformer / AVR / UPS / breaker / Bus-Bar), generator coolant and exhaust heat, compressor coolant and dehumidifier to use waste heat generation as a heat source. Economical heating and cooling system using a heat pump, characterized in that for configuring the power equipment for the excess cold water treatment and quality waste heat recovery in winter using. The method of claim 1, The heat balance processing unit includes a first and second opening valve, the first and second opening valve is connected to the supply header and the return header through the circulation pipe, The supply header and the return header utilize a boiler room exhaust unit, an exhaust facility of a parking lot of a common house or a large building, an exhaust facility of a living facility, and an air supply / exhaust system for indoor ventilation to exhaust excess calories and recover necessary calories. Economic cooling and heating system using a heat pump, characterized in that the heat exchanger connected to the blower configuration.

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