As is well known, apartment houses such as apartments have a central heating system that heats water through a large-sized hot water boiler and supplies it to each household, and individual boilers are installed for each household to provide individual heating for each household. It is a situation that one of the two methods of the individual heating system is applied to perform the heating and hot water supply function.
Among them, central heating system provides water with the same temperature for all households, but it is easy to manage, but individual heating system is preferred because each person has different tastes and has the disadvantage of being able to heat at their own time. Tend to.
However, in the case of such individual heating system, only hot water supply is required and heating is not necessary, so in order to implement hot water supply in the summer season, the individual boiler must be operated, which consumes much fuel.
In consideration of these shortcomings, the conventional individual heating integrated system has been filed as a "hot water supply system through geothermal recovery" of Patent Registration No. 778686 filed by the applicant, and the system recovers ground heat from the ground and heat pumps it. The heat exchanger in the evaporator side of the refrigerant pipe and the heat exchanger, and the hot water tank is connected to the hot water tank filled with the hot water, condenser of the heat pump and the hot water tank so that the hot water is circulated in order from the hot water tank to the water from the condenser of the heat pump The hot water supply pipe connected to the hot water tank is connected to the hot water supply side of each boiler for each generation, while the branch pipe branched from the hot water supply pipe is connected to the hot water pipe drawn from the individual boiler. Each boiler, basin pipe, and hot water pipe are equipped with an intermittent valve, During operation, open and close the intermittent valve according to the season so that the preheated hot water from the hot water tank is discharged directly to the water valve or flows into the individual boiler.
However, the conventional individual heating system as described above has to maximize the operating time and the heat source of the heat pump when a high temperature hot water supply, such as winter, so that the hot water supply efficiency and the hot water supply efficiency is reduced, energy is reduced There is a problem that it takes too much.
In addition, in the related art, since a plurality of connecting pipes such as a hot water heating tube, a hot water pipe, a hot water supply pipe, and the like are connected between the hot water tank and the individual boiler, there is a problem in that the facilities are complicated and the maintenance equipment cost is excessively required.
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1 is a schematic configuration diagram showing a geothermal complex system according to the present invention.
The geothermal complex system for hot water supply according to the present invention is a ground heat exchange to circulate water including underground heat from the ground through the heat pump (1) and the ground heat transfer pipe (21) to receive the power and circulate the refrigerant through the refrigeration cycle The ground heat transfer pipe by heat-exchanging the other side of the cold water pipe 31 connected to the heat pump 1 and the underground heat transfer pipe 21 so that one side 2 exchanges heat with the evaporator 14 of the heat pump 1. (21) A ground heat recovery heat exchanger (3) for recovering underground heat from the water inside, and a water supply port 41 for supplying fresh water is installed at one lower side thereof, and new water is supplied through a water supply hole 41 at the upper end thereof. When the hot water supply tank 42 is connected to the hot water supply tank 42 is connected to the closed shape of the hot water supply tank 4, one end is connected to the lower portion of the hot water supply tank 4, the other end of the hot water supply tank (4) Is connected to the lower part of the hot water tank (4) and the opposite side of the heat pump (1) Both axial and connected to the heat pump (1) 12 and the heat exchange are formed in a hot water heating condenser tube 5, which heat the hot water to recover heat from 12.
In addition, the geothermal composite system according to the present invention is heat so that the auxiliary boiler 6 heats the hot water supply heat source to the hot water supply tank 4 as shown in FIG. 2 attached to the hot water heating tube 5. It is connected to the circulation pipe (61).
The heat pump 1 receives power and an evaporator 14 connected to a refrigerant to the cold water pipe 31 absorbs heat from the cold water pipe 31 so that the liquid refrigerant is converted into a gaseous refrigerant so that the compressor is connected to the evaporator 14. (11), the compressor 11 compresses the gas refrigerant to be sent to the condenser (12) connected to the compressor (11), in the condenser (12) heat generated by changing the gas refrigerant into a liquid refrigerant And the changed liquid refrigerant is circulated through the refrigerating cycle, which is sent to the evaporator 14 connected to the expansion valve 13 through the expansion valve 13 connected to the condenser 12.
The underground heat exchanger (2) is an implantation pipe (22), which is erected upright to 30 to 50m underground, an underground heat recovery space (23) that is drilled from the end of the implantation pipe (22) to 400 to 450m underground, and one end is an implantation pipe The underground heat transfer pipe 21 and the ground heat are inserted into the bottom of the ground heat recovery space 23 through the 22 and the other end is located at the upper portion of the implantation pipe 22 via the ground heat recovery heat exchanger 3. It is formed of a water pump 24 connected to one side of the insertion pipe 22 of the feed pipe 21 to pump water in the underground heat recovery space 23.
In addition, referring to another example of the geothermal complex system according to the present invention, the first hot water supply tank 4a is connected to the heat pump 1 as the hot water heating tube 5, as shown in FIG. A secondary hot water tank 4b is connected to the primary hot water tank 4a by a connecting pipe 7, and a heat circulation pipe 61 is connected between the primary hot water tank 4a and the secondary hot water tank 4b. Auxiliary boiler 6 is connected.
Looking at another example of the geothermal composite system according to the present invention, the auxiliary boiler 6 is connected to the secondary hot water tank (4b) as a heat circulation pipe (61) is installed as shown in FIG.
At this time, it is preferable that a separate boiler (not shown) is provided to supply individual heating for each household separately from the geothermal complex system.
Looking at the effect of the present invention made of a configuration as described above are as follows.
The present invention is to recover the ground heat from the warm water located 400 ~ 450m underground to heat the hot water supply through the heat pump (1), and to supply the heated hot water supply to each generation through the hot water supply tank (4) .
In order to supply the hot water supply to each generation as described above, when the heat pump 1 is supplied with power and the water pump 24 of the underground heat exchanger 2 is driven, the underground heat transfer pipe 21 is operated. The warm water of 15 ~ 20 ℃ in the underground 400 ~ 450m rises and is transferred to the underground heat recovery heat exchanger (3) side, the underground heat recovery heat exchanger (3), including the cold water pipe (31) and underground heat through which cold water flows Since the geothermal heat transfer pipe 21 in which warm water flows is formed to exchange heat, the warm water including the geothermal heat flowing into the geothermal heat transfer pipe 21 increases the temperature during the heat exchange process with the cold water in the cold water pipe 31. The evaporator of the heat pump 1 in a state where the temperature of the cold water flowing out from the water including the geothermal heat is exhausted and discharged to the upper portion of the insertion pipe 22 again in the cold state being taken away. To flow to the (14) side .
At this time, even if the water in the cold state is introduced into the upper part of the insertion tube 22, the level of the insertion tube 22 is always maintained constant, the water of the cold state is diluted with other warm water and the temperature is warm again In addition, since the pumping is made in the basement 400 ~ 450m underground water transported through the underground heat transfer pipe 21 is always a constant temperature.
In the evaporator 14 of the heat pump 1, the refrigerant inside the refrigerant pipe may evaporate heat from the cold water inside the cold water pipe 31, and the cold water in the cold water pipe 31 is cooled again. It will flow to the ground heat recovery heat exchanger (3), and this process is repeated.
At the same time, the refrigerant evaporated by taking the temperature from the evaporator 14 of the heat pump 1 is then compressed into a state of high temperature and high pressure through the compressor 11 to enter the condenser 12, and the refrigerant from the condenser 12 The refrigerant in the high temperature and high pressure state inside the pipe is circulated to the evaporator 14 through the expansion valve 13 while the temperature is lowered in the process of heat exchange with the hot water in the hot water heating tube 5, The hot water supply of the hot water heating tube 5 takes the temperature from the refrigerant, and the water filled in the hot water tank 4 is continuously accumulated and heat is heated.
The hot water continuously preheated in the hot water tank 4 is supplied with water through the water inlet 41 and is moved through the hot water supply pipe 42 connected to the upper end of the hot water tank 4 by the pressure. It will be supplied to each generation.
On the other hand, by operating the system as described above to supply hot water, in the case of the winter season when the hot water usage is high, the hot water is used a lot during the peak (peak) time instantaneous overload and hot water efficiency is approximately 70 ~ 80% It will fall to such an extent that it will start the auxiliary boiler 6 according to the invention.
In this way, the hot water is supplied to the heat source generated by the operation of the auxiliary boiler 6 together with the underground heat source by the heat pump 1, thereby preventing instantaneous overload and stabilizing the system while simultaneously improving hot water supply efficiency. That's up to 100%.
Therefore, the system according to the present invention can supply the hot water supply source by the geothermal and auxiliary boiler 6 as well as the individual heating will be able to spread the spread of geothermal system of renewable energy with energy saving.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.
1 is a schematic configuration diagram showing a geothermal complex system according to the present invention.
Figure 2 is a schematic block diagram showing another example of a geothermal complex system according to the present invention.
3 and 4 is a configuration diagram showing another example of a geothermal complex system according to the present invention.
<Description of the symbols for the main parts of the drawings>
1: heat pump 2: underground heat exchanger
3: underground heat recovery heat exchanger 4: hot water tank
5: hot water heating pipe 6: auxiliary boiler
7: connector 11: compressor
12 condenser 13 expansion valve
14: evaporator 21: underground heat transfer pipe
22: Placement Hall 23: Underground heat recovery space
24: water pump 31: cold water pipe
41: water supply port 42: hot water supply pipe
61: heat circulation tube