KR101043050B1 - Heating system using exhaust heat of refrigerating machine - Google Patents

Abstract

The present invention relates to a heating system for heating by using the waste heat generated during the operation of the steam-compressed refrigerator operated in the four-stage refrigeration cycle of compression, condensation, expansion, vaporization, such as air conditioners, refrigerators, freezers.

Specifically, the present invention is a heating pipe embedded in the floor; A boiler pipe connecting both ends of the heating pipe so that the heating water is circulated, and a boiler for heating the heating water delivered to the boiler pipe through one end of the heating pipe and transferring the heating water to the other end of the heating pipe; A refrigerator equipped with a compressor, a condenser, an expander, and a vaporizer to circulate the refrigerant; After heat-exchanging the heating water delivered to the boiler pipe through the one end of the heating pipe and the refrigerant flowing from the compressor to the condenser, the heating water is circulated along the bottom through the other end of the heating pipe and the refrigerant Provides a heating system using the waste heat of the refrigeration cycle comprising a heat exchanger to the condenser or expander.

Description

Heating system using exhaust heat of refrigerating machine

The present invention relates to a heating system using exhaust heat of a refrigerating machine. More specifically, the present invention relates to a heating system for heating by using the waste heat generated during the operation of the steam compression freezer operating in the four-stage refrigeration cycle of compression, condensation, expansion, vaporization, such as air conditioner, refrigerator, freezer.

In general, 'heating' is a general term for warming the inside of a building, and can be broadly classified into 'central heating' and 'individual heating'.

Among these, 'Central heating' is mainly a method of utilizing the heating equipment integrated with the building. Pipes or ducts are used to heat the fruits such as steam, hot water, and hot wind generated from a heat source device such as a boiler and a hot air fan. Distribution equipment such as ducts is used to distribute to individual spaces. Central heating is advantageous for management and fire prevention because the heat source equipment is concentrated in a specific place, and there is no need to consider the ventilation of individual spaces, and hot water can be used easily, which is widely used in most residential and office spaces.

At this time, the central heating is installed in the place where you want to heat again, a predetermined radiator (放 (器 (radiator), radiator) after supplying steam or hot water to heat the room directly heating, the air heated in the central machine room inside the building indoors Indirect heating, which is blasted by air, circulates hot water in pipes embedded in walls, ceilings, and floors, and is subdivided into radiant heating, which heats up the room. It is used most often because it can warm up, the temperature change is small and the comfort is high.

On the other hand, 'individual heating' is a method of utilizing a separate 'heating apparatus' separated from a building to obtain a heating effect by convection and radiation by installing an independent heat generating device such as a stove, a stove and a pecca. Individual heating has the advantage of simple handling and economical, but it shows fatal disadvantages such as releasing harmful gas and odor, so it is currently limited to places where central heating is impossible or auxiliary heat source of central heating.

On the other hand, with the recent increase in the overall income level of the country and the improvement of the quality of life, the trend of large-sized and high-performance home appliances has continued. The trend toward larger and higher performance of home appliances is particularly prominent in the field of refrigerating machines such as refrigerators, air conditioners and freezers.

General refrigerators are classified into steam compression type, absorption type, steam injection type, air refrigeration cycle, and electronic type according to the principle of refrigeration. However, steam compressors most commonly used in homes and businesses are gaseous refrigerants. The heat pump acts as a heat pump to move heat from the low temperature side to the high temperature by repeating the four-stage refrigeration cycle of compression, condensation, expansion, and vaporization. Here, the freezer is used as a generic term for all kinds of home appliances, such as a refrigerator, an air conditioner, a freezer, etc., which move heat from a low temperature side to a high temperature side, and thus will be consistently used in the following specification.

Steam compressors for this purpose are compressors, condensers, vaporizers, and expanders as an essential component.The gaseous refrigerant takes heat from the fluid to be cooled and vaporizes while it is flowing through the vaporizer inside the refrigerator. When the pressure is increased, the heat is released from the condenser outside the freezer to expand in the expansion valve and then back to the carburetor. The vaporizer of the freezer thus takes away the heat of the surroundings, and the condenser releases heat to the surroundings.

However, the heat emitted from the condenser of the refrigerator is substantially exhaust heat, and the entire amount is consumed without proper utilization.

The present invention has been made in view of the above situation, and an object of the present invention is to present a practical way to heat the room using waste heat of the refrigerator which is unnecessary.

To this end, the present invention is to provide a heating system for heating by using the waste heat generated during the operation of the steam compression freezer operating in the four-stage refrigeration cycle of compression, condensation, expansion, vaporization, such as air conditioner, refrigerator, freezer.

The present invention in order to achieve the above object, the heating pipe buried in the bottom; A boiler pipe connecting both ends of the heating pipe so that the heating water is circulated, and a boiler for heating the heating water delivered to the boiler pipe through one end of the heating pipe and transferring the heating water to the other end of the heating pipe; A refrigerator equipped with a compressor, a condenser, an expander, and a vaporizer to circulate the refrigerant; And after heat-exchanging the refrigerant flowing from the compressor to the condenser from the heating water, which is delivered to the boiler pipe through one end of the heating pipe, the heating water is circulated along the bottom through the other end of the heating pipe. Refrigerant provides a heating system using the waste heat of the refrigeration cycle including a heat exchanger to the condenser or expander.

At this time, the heat exchanger, the first heating water pipe selectively connected to one end of the heating pipe; A second heating water pipe selectively connected to the other end of the heating pipe; A first refrigerant pipe connected to the compressor; A second refrigerant pipe connected with the condenser or expander; And heat-exchanging the heating water delivered to the first heating water pipe and the refrigerant delivered to the first refrigerant pipe, thereby transferring the heating water to the second heating water pipe, and delivering the refrigerant to the second refrigerant pipe. It characterized in that it comprises a heat exchange means.

In addition, a first valve is installed at one end of the heating pipe to selectively connect the one end of the heating pipe and the first heating water pipe; And a second valve installed at the other end of the heating pipe to selectively connect the other end of the heating pipe to the second heating water pipe, or a first check valve installed at the first heating water pipe or the second heating water pipe; A second check valve installed at the other end of the second heating pipe; And a transfer pump installed in the second heating water pipe to allow the heating water flowing through one end of the heating pipe to flow to the other end of the egg bang pipe through the first heating water pipe, the heat exchange means, and the second heating water pipe. It is done.

The heat exchanger may further include: a third valve installed between the compressor and the condenser to selectively connect the first refrigerant pipe to the compressor; And a fourth valve installed between the condenser and the expander to selectively connect the second refrigerant pipe to the expander, or the first refrigerant pipe is directly drawn from the compressor, and the second refrigerant pipe is It is characterized in that the direct connection to the condenser.

The heat exchange means may include a heating water inlet to which the first heating water pipe is connected and a heating water outlet to which the second heating water pipe is connected, and connects the heating water inlet to the heating water outlet. A sealed housing defining an area; And a refrigerant circulation tube connected to the first and second refrigerant pipes at one end and the other end thereof to penetrate the housing to cross the heat exchange region.

In addition, the movement direction of the heating water and the refrigerant in the housing is opposite to each other, and is built in the heat exchange area to connect the heating water inlet and the heating water outlet, the outer surface of the refrigerant circulation pipe It characterized in that it further comprises a heating water circulation pipe wound along.

The present invention proposes a specific method for heating the room by using waste heat of the refrigerator which is unnecessary.

That is, the present invention is a heating system for heating by using the waste heat generated during the operation of the steam compression freezer operating in the four-stage refrigeration cycle of compression, condensation, expansion, vaporization, such as air conditioner, refrigerator, freezer, etc. There is an advantage that can freely select and use the heating using the waste heat of the normal heating and the freezer.

Therefore, the energy saving effect is high, and since it can be applied without any special modification of the existing refrigerator, boiler, and heating pipe, it shows an excellent utilization effect.

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

1 is a schematic diagram of a heating system (hereinafter, simply called a heating system) using waste heat of a refrigeration cycle according to the present invention.

As can be seen, the heating system according to the present invention is a boiler 10, which is a heat source device for radiant heating, a heating pipe 20 embedded in the floor G of an individual space so that the heating water is circulated, compression, condensation, expansion, vaporization The steam compression freezer (30) which moves heat from the low temperature side to the high temperature repeatedly by repeating the four-stage refrigeration cycle, and heat-exchanges the heating water of the heating pipe 20 and the refrigerant of the freezer 30 according to a user's selection. After heating, the refrigerant circulated to the heating pipe 20 and the coolant cooled to a relatively low temperature includes a heat exchanger 50 to be delivered to the refrigerator (30).

The details are as follows.

First, the boiler 10 is connected to the heating pipe 20, the boiler pipe to complete the circulation path of the heating water (see 12 of Fig. 2 to 10, hereinafter the same.), The heating flowing through the boiler pipe 12 A burner for heating the water (see 14 of FIGS. 2 to 10, which is the same below). Boiler 10 for this purpose can be used for all kinds of heating boilers for generating high-temperature and high-pressure steam by heating the water with the heat of combustion of the fuel, such as flue tube, water pipe, small perfusion type, widely the same or similar operation Vacuum, pressureless water heaters that show the principle can be used.

That is, the boiler 10 of the heating system according to the present invention may be connected to the heating pipe 20 to provide a boiler pipe 12 to circulate the heating water and at the same time to heat the heating water flowing through the boiler pipe 12. There is no particular limitation on the type or configuration, and it is also possible to use a boiler installed in a general home or business, which will be easily understood by those skilled in the art with reference to the following description.

Next, the heating pipe 20 is buried in the floor (G) of the individual space that needs to be heated in the building is a portion in which the heating water is circulated, this is also the same or similar to the general copper (Cu), aluminum (Al), Pipes made of metal or synthetic resin with high thermal conductivity such as iron (Fe) may be used.

Next, the refrigerator 30 is a part for moving heat from the low temperature side to the high temperature by repeating the four-stage refrigeration cycle of compression, condensation, expansion, and vaporization of a gas refrigerant such as freon, and a compressor, a condenser, an expander, and a vaporizer (FIG. 32, 34, 36, 38 in Figs. 2 to 10, which are the same hereinafter.) Are essential components.

At this time, the description of the above-mentioned freezer is commonly applied to refrigerators, air conditioners, freezers, etc., the refrigerator 30 of the heating system according to the present invention is also a compressor, condenser, expander for compression, condensation, expansion, vaporization of the gas refrigerant. As long as the vaporizers 32, 34, 36, 38 are provided to move the heat from the low temperature side to the high temperature by repeatedly operating the four-stage refrigeration cycle of compression, condensation, expansion, and vaporization, there is no particular limitation on the type or configuration. Although a refrigerator is shown in the drawing, it is also possible to use a refrigerator, a freezer, an air conditioner, and the like, which are pre-installed in a general home or business, which will be easily understood by those skilled in the art when referring to the following description.

Finally, the heat exchanger 50 heat exchanges the cooling water flowing from the heating pipe 20 to the boiler pipe 12 and the refrigerant flowing from the compressor 32 of the refrigerator 30 to the condenser 34 according to a user's selection. After the heating, the heating water circulates along the heating pipe 12 and the refrigerant flows to the condenser 34 or the expander 36. At this time, the heating water flowing from the heating pipe 20 to the boiler pipe 14 shows a relatively low temperature compared with the heating water flowing from the boiler pipe 12 to the heating pipe 20, the compressor ( The refrigerant passing through 32 shows a relatively high temperature, and the heat exchanger 50 according to the present invention heats relatively low temperature heating water to waste heat of a relatively high temperature refrigerant.

Therefore, the user can properly control the heat exchanger 50 of the heating system according to the present invention to perform the normal heating to circulate the heating water heated in the boiler 10 to the heating pipe 20 or of the heating pipe 20 Heating using the waste heat of the refrigerating cycle to circulate the heating water in the heating pipe 20 by heat exchange with the refrigerant of the refrigerator (30).

Since the specific configuration of the heat exchanger 50 for this can be divided into several embodiments, it looks at each of them separately. Hereinafter, for convenience, instead of looking at the contents common to each embodiment in detail through the first embodiment, other embodiments mainly look at differences.

First Example

2 is a block diagram showing a part of a heating system according to a first embodiment of the present invention, a boiler 10, a part of a heating pipe (see 20 in FIG. 1, hereinafter same), and a freezer (see FIG. 1). 30), the heat exchanger 50 can be confirmed. In this case, for convenience, the heating pipe 20 is one end of the heating pipe 20a and the boiler 10 to deliver the cooled heating water to the boiler 10 while flowing through the bottom of the individual space (refer to G of FIG. 1). Only the other end of the heating pipe 20b for transmitting the heated heating water to the floor G of the individual space while flowing) is shown.

That is, the boiler 10 provides a boiler pipe 12 connecting one end 20a of the heating pipe 20 and the other end 20b so that the heating water can be circulated, and a burner 14 for heating the heating water flowing therethrough, and a freezer ( 30 provides a compressor 32, a condenser 34, an expander 36, and a vaporizer 38 provided along the refrigerant movement path 31 for circulation of the refrigerant to compress, condense, expand, and vaporize the refrigerant. Repeat step 4 refrigeration cycle.

The heat exchanger 50 heat-exchanges the cooling water flowing from the heating pipe end 20a to the boiler pipe 14 and the refrigerant flowing from the compressor 32 of the refrigerator 30 to the condenser 34 according to a user's selection. After heating the heating water and cooling the refrigerant at the same time, the heated heating water is delivered to the other end of the heating pipe 20b to be circulated along the bottom G of the individual space, and the cooled refrigerant is transferred to the condenser 34 to provide a freezer. Allow the four stage refrigeration cycle of 30 to be performed.

The heat exchanger 50 for this purpose is a first valve (V1) installed between the heating pipe end (20a) and the boiler pipe 12 and the first heating water pipe selectively connected to the heating pipe end (20a) through this ( 52, a second valve V2 installed between the boiler pipe 12 and the other end of the heating pipe 20b, and the second heating water pipe 54 and the compressor 32, which are selectively connected to the other end of the heating pipe 20b through this. Including the first refrigerant pipe (56), the second refrigerant pipe (58) connected to the condenser (34) drawn from the), and is transferred from the one end of the heating pipe (20a) to the first heating water pipe (52) according to the user's choice The heat exchanged between the heating water and the refrigerant delivered from the compressor 32 to the first refrigerant pipe 56 transfers the relatively heated heating water to the second heating water pipe 54 and the other end of the heating pipe 20b and relatively cools. And heat exchange means 60 for delivering the refrigerant to the condenser 34.

In this case, 3/2 way valves are used as the first and second valves V1 and V2, and the heating water is respectively transferred from the heating pipe end 20a to the boiler pipe 12, and the boiler pipe ( 12) the first operation for flowing from the other end of the heating pipe 20b and the heating water from the heating pipe end 20a to the first heating water pipe 52, and the second heating water pipe 54 at the other end of the heating pipe 20b. A second operation of flowing to the.

As a result, when the user selects the first operation, the heating water circulates along the boiler pipe 12 and the heating pipe 20, and normal heating is performed by the operation of the burner 14. On the other hand, when the user selects the second operation, the heating water is along the heating pipe end 20a, the first heating water pipe 52, the heat exchange means 60, the second heating water pipe 54, and the other end of the heating pipe 20b. In this process, the heat exchange means 60 is a high-temperature refrigerant flowing from the compressor 32 of the refrigerator 30 to the condenser 34 during this process, so that the heat exchange between the heating water and the refrigerant occurs, As a result, heating using the waste heat of the refrigerant proceeds.

3 and 4 are block diagrams showing different operating states of the heating system according to the first embodiment of the present invention. For convenience, the moving direction of the heating water is indicated by a solid arrow, and the moving direction of the refrigerant is dotted. It is indicated by the arrow.

First, Figure 3 shows a normal heating state, the first and second valves (V1, V2) is one end of the heating pipe 20a and the boiler pipe 12, the boiler pipe 12 and the other end of the heating pipe 20b, respectively. ).

As a result, the heating water is circulated along the floor G of the individual space through the heating pipe 20 and the boiler pipe 12, and when the burner 14 of the boiler 10 is driven to pass through the boiler pipe 12. It is heated during the process and normal heating proceeds. In addition, the refrigerant of the refrigerator 30 repeats a four-stage refrigeration cycle of compression, condensation, expansion, and vaporization during the movement along the refrigerant movement path 31. At this time, although the expansion path connecting the first refrigerant pipe 56, the heat exchange means 60 of the heat exchanger 50, the second refrigerant pipe 58 exists between the compressor 32 and the condenser 34, Since it does not work, the refrigerant of the compressor 32 is naturally cooled and transferred to the condenser 34, and there is no abnormality in the operation of the refrigerator 30.

On the other hand, Figure 4 shows a heating state using the waste heat, the first and second valves (V1, V2) is the heating pipe end 20a, the first heating water pipe 52 and the second heating water pipe 54 and Connect the other end of the heating pipe 20b.

As a result, the heating water circulates along one end of the heating pipe 20a, the first heating water pipe 52, the heat exchange means 60 of the heat exchanger 50, the second heating water pipe 54, and the other end of the heating pipe 20b. During this process, since the relatively high temperature refrigerant flowing from the compressor 32 of the refrigerator 30 to the condenser 34 constantly flows in the heat exchange means 60 of the heat exchanger 50, eventually the heating water and the refrigerant Heat exchange between the heating and the heating by using the waste heat of the refrigeration cycle proceeds.

2nd Example

5 is a block diagram illustrating a part of a heating system according to a second exemplary embodiment of the present invention, and the same reference numerals are given to the same parts performing the same roles as the foregoing to avoid duplication of description.

As can be seen, the heating system according to the second embodiment of the present invention is different from the first embodiment through the third valve V3 installed in the refrigerant net environment path 31 between the compressor 32 and the condenser 34. The first refrigerant pipe 56 and the compressor 32 are selectively connected, and the second refrigerant via the fourth valve V4 provided in the refrigerant net environment path 31 between the condenser 34 and the expander 36. Tube 58 and inflator 36 are selectively connected.

At this time, the third and fourth valves V3 and V4 may use 3 / 2-way valves interlocked with the first and second valves V1 and V2, respectively. The first and second valves V1 and V2 may be used. The third and fourth valves V3 and V4 connect the compressor 32 and the condenser 34, the condenser 34 and the expander 36, respectively, in the first operation of the first and second valves V1. In the second operation of V2, the third and fourth valves V3 and V4 connect the compressor 32, the first refrigerant pipe 56, the second refrigerant pipe 58, and the expander 36, respectively.

As a result, normal heating is performed during the first operation, and heating using waste heat of the air conditioner is performed during the second operation.

6 and 7 are block diagrams showing different operating states of the heating system according to the second exemplary embodiment of the present invention. As shown in FIG. Is indicated by dotted arrows.

First, Figure 6 shows a normal heating state, the first and second valves (V1, V2) is the heating pipe end 20a and the boiler pipe 12, the boiler pipe 12 and the other end of the heating pipe 20b, respectively. The third and fourth valves V3 and V4 connect the compressor 32 and the condenser 34 and the condenser 34 and the expander 36, respectively.

As a result, the heating water is circulated along the floor G of the individual space through the heating pipe 20 and the boiler pipe 12, and is heated during the process of passing through the boiler 10 to proceed with normal heating. And the refrigerant of the refrigerator repeats the four-stage refrigeration cycle of compression, condensation, expansion, vaporization during the movement along the compressor 32, condenser 34, expander 36, vaporizer 38.

On the other hand, Figure 7 shows a heating state using the waste heat, the first and second valves (V1, V2) are respectively one end of the heating pipe 20a, the first heating water pipe 52 and the second heating water pipe 54 and The other end of the heating pipe 20b is connected, and the third and fourth valves V3 and V4 connect the compressor 32, the first refrigerant pipe 56, and the second refrigerant pipe 58 and the expander 36, respectively. do.

As a result, the heating water circulates along one end of the heating pipe 20a, the first heating water pipe 52, the heat exchanger 50, the second heating water pipe 54, and the other end of the heating pipe 20b, and the refrigerant in the refrigerator is compressed. It circulates along the 32, the 1st refrigerant pipe 56, the heat exchanger 50, the 2nd refrigerant pipe 58, the expander 36, and the vaporizer | carburetor 38. As shown in FIG.

As a result, in the heat exchanger 50, heat exchange occurs between the relatively low temperature heating water and the relatively high temperature refrigerant, and the heated heating water passes along the floor G of the individual space through the heating pipe 20. Since it is circulated, the heating using waste heat of the refrigerating cycle proceeds. At this time, the refrigerant supplied to the heat exchanger 50 through the first refrigerant pipe 56 is heat-exchanged with the heating water and then cooled and then transferred to the expander 36 through the second refrigerant pipe 58 so that the refrigerant 30 There is no burden on the operation.

3rd Example

8 is a block diagram illustrating a part of a heating system according to a third exemplary embodiment of the present invention. In order to avoid duplication of description, the same reference numerals are given to the same parts that perform the same role.

As can be seen, in the heating system according to the third embodiment of the present invention, unlike the first and second embodiments, the first and second valves (see V1 and V2 of FIGS. 2 to 7, which are the same below) are omitted. Instead, the first heating water pipe 52 is provided with a first check valve CV1 so that the heating water at one end of the heating pipe 20a flows only to the boiler pipe 12 or the first heating water pipe 52, and the heating is performed. The second check valve CV2 is installed between the other end of the pipe 20b and the boiler pipe 12 so that the heating water of the boiler pipe 12 or the second heating water pipe 54 flows only to the other end of the heating pipe 20b. , The second heating water pipe 54 is provided with a separate transfer pump (P).

At this time, one end of the heating pipe 20a and the first heating water pipe 52 may be connected to a tee (T) or a wire (Y), which is a conventional tube joi means, and the other end of the heating pipe 20b and the first heating pipe. 2 heating water pipe 54 may also be connected to the tee or wire. The connection structure of the refrigerator 30 and the heat exchanger 50 is substantially the same as in the first embodiment.

The heating system according to the third embodiment of the present invention has a first operation, which is normal heating by the on / off operation of the transfer pump P, and a second heating using waste heat of the air conditioner 30 without a separate valve operation. It is characterized in that the switching, bar operation of the user is unnecessary, thereby ensuring reliability in switching operation.

9 and 10 are block diagrams showing different operating states of the heating system according to the third embodiment of the present invention. As shown in the foregoing, the moving direction of the heating water is indicated by the solid arrow, and the advancing direction of the refrigerant is shown. Is indicated by dotted arrows.

First, Figure 9 shows a normal heating state, the transfer pump (P) is off (off).

As a result, the heating water is circulated along the floor G of the individual space through the heating pipe 20 and the boiler pipe 12, and is heated during the process of passing through the boiler 10 to proceed with normal heating. The refrigerant in the refrigerator is circulated along the compressor 32, the first refrigerant pipe 56, the heat exchanger 50, the second refrigerant pipe 58, the expander 36, the vaporizer 38, and the compressor 32. Since no action can be expected from the heat exchanger 50, the refrigerant of the compressor 32 is naturally cooled and then transferred to the condenser 36, and there is no abnormality in the operation of the refrigerator 30.

At this time, the first check valve CV1 prevents a backflow of the heating water from the heating pipe end 20a toward the first heating water pipe 52 so that the heating water flows only from the heating pipe end 20a to the boiler pipe 12. In addition, the second heating water pipe 54 is substantially closed by turning off the transfer pump P so that the heating water of the boiler pipe 12 flows only to the other end of the heating pipe 20b.

On the other hand, Figure 10 shows a heating state using the waste heat, the transfer pump (P) is turned on (on).

As a result, the heating water circulates along one end of the heating pipe 20a, the first heating water pipe 52, the heat exchanger 50, the second heating water pipe 54, and the other end of the heating pipe 20b, and the refrigerant in the refrigerator is compressed. It circulates along the 32, the 1st refrigerant pipe 56, the heat exchanger 50, the 2nd refrigerant pipe 58, the expander 36, the vaporizer 38, and the compressor 32. As shown in FIG. In this process, heat exchange between the relatively low temperature heating water and the relatively high temperature refrigerant occurs in the heat exchanger 50, and the heated heating water is heated to the bottom of the individual space (G) through the heating pipe 20. Since it is circulated along, heating is performed using the waste heat of the refrigerating cycle, and the refrigerant supplied to the heat exchanger 50 through the first refrigerant pipe 56 is heat-exchanged with the heating water to cool the second refrigerant pipe 58. Since it is transmitted to the inflator 36 through the operation of the refrigerator 30 there is no force.

At this time, the internal pressure of the heat exchange means 60 is lowered by driving the transfer pump P, so that the entire amount of the heating water in one end of the heating pipe 20a flows to the first heating water pipe 52, and the second check valve CV2. Prevents a backflow of the heating water flowing from the second heating water pipe 54 to the boiler pipe 12 so that the heating water flows only from the second heating water pipe 54 to the other end 20b of the heating pipe.

For reference, in the third embodiment of the present invention, even if the transfer pump P is installed in the first heating water pipe 52 between the first check valve CV1 and the heat exchanger 50, the same action can be expected. Even if the first check valve CV1 is installed in the second heating water pipe 54 between the other end of the heating pipe 20b and the transfer pump P, the same action can be expected. In addition, if necessary, even if the connection structure of the refrigerator 30 and the heat exchanger 50 is the same as in the second embodiment, it can be operated without any difficulty. In this case, since unnecessary valve operation is required, the first and second heating states The switching operation may be unreliable and may be inconvenient to use. This will not be described separately because it can be easily understood by those skilled in the art through the above description.

Meanwhile, FIGS. 11 and 12 are cross-sectional views illustrating heat exchange means 60 in which direct heat exchange is performed between the heating water and the refrigerant in the heat exchanger of the heating system according to the present invention. The following applies in common to all of the first to third embodiments.

First, as shown in FIG. 11, the heat exchange means 60 defines a sealed heat exchange area 61 therein and provides a housing 63 for providing a heating water inlet 66 on one side and a heating water outlet 68 on the other side; It includes a refrigerant circulation tube 62 penetrating through the housing (63). The first heating water pipe 52 is connected to the heating water inlet 66, the second heating water pipe 54 is connected to the heating water outlet 68, and one end of the refrigerant circulation pipe 62 is connected to the first refrigerant pipe ( 56 is connected, and the other end of the refrigerant circulation pipe 62 is connected to the second refrigerant pipe 58.

In this case, the housing 63 is made of a heat insulating material to prevent heat loss, and the refrigerant circulation tube 62 may be a metal or synthetic resin pipe having a high thermal conductivity such as copper, aluminum, or iron having high thermal conductivity. One end of the refrigerant circulation pipe 62 is supplied to the heating water outlet 68 side of the housing 63 and the other end of the refrigerant circulation pipe 62 through which the refrigerant is discharged is the heating water inlet 66 of the housing 63. It is preferably located on the side.

As a result, the heating water flowing into the heat exchange area 61 through the heating water inlet 66 of the housing 63 flows from the right to the left in the direction of the heating water outlet 68, that is, according to the drawing, and the refrigerant circulation pipe The coolant at 62 flows from one end to the other end, ie from left to right when referring to the drawing. As a result, the moving directions of the heating water and the refrigerant in the housing 63 are opposite to each other.

The reason for this is to consider the heat loss between the relatively low temperature heating water and the relatively high temperature refrigerant, the heating water discharged to the heating water outlet 68 of the housing 63 to one end of the refrigerant circulation pipe (62). The final heat exchange with the refrigerant supplied to the highest temperature is heated to the maximum temperature, the refrigerant discharged to the other end of the refrigerant circulation pipe 62 and the lowest temperature of the heating water supplied to the heating water inlet 66 of the housing and The final heat exchange is used to cool down to the lowest temperature.

12 is a cross-sectional view showing a modified example of the heat exchange means, and a different heating water circulation pipe 70 is formed along the outer surface of the refrigerant circulation pipe 62 in the heat exchange area 61 of the housing 63. ) Is wound up.

At this time, the heating water circulation pipe 70 is made of a metal material or a synthetic resin pipe with high thermal conductivity, preferably copper, aluminum, iron, etc., so that the heating water circulation pipe 70 is closely wound along the outer surface of the refrigerant circulation pipe 62. Preferably, one end of the heating water circulation pipe 70 passes through the heating water inlet 66 of the housing 63 and is connected to the first heating water pipe 52, and the other end of the heating water circulation pipe 70 is the housing 63. It is connected to the second heating water 54 through the heating water outlet 68 of the.

As a result, the heat exchange phenomenon between the refrigerant and the heating water advanced in the heat exchange means 60 shown in FIG. 12 is substantially the same as in FIG. 11.

On the other hand, the heating system according to the present invention can be most effective when combined with the technical idea of the patent application No. 10-2005-0099540 by the present applicant, the same patent application in the building It relates to a prefabricated ondol block which is arranged on the floor of the individual space (see G of FIG. 1, hereinafter same).

In other words, the technical idea of the same patent application will be described briefly, a sealed cavity provided to allow air to be circulated, and a rectangular flat plate shape formed at an upper end of the sealed cavity so that a pipe groove is formed at an upper surface thereof. The upper protrusion and the upper depression having a corresponding shape are sequentially formed along the outer circumferential surface of the rectangular flat plate outer surface divided by the pipe groove, and are vertically connected to the outside of the rectangular flat plate as the side wall of the closed cavity. A lower side wall protrusion is formed at the lower end connected to the lower surface of the upper recess, and one side wall lower end connected to the lower side of the upper protrusion is provided with a prefabricated ondol block including a side at which side wall depressions are formed corresponding to the side wall protrusion. .

At this time, the pipe groove formed on the upper top surface of the prefabricated ondol block represents at least one of a cross shape, a diamond shape having an arc or a diamond shape having the cross shape and an arc, and the shapes thereof may be appropriately combined. Arranged on the floor (G) can be guided stably without disturbing the zigzag arrangement of the heating pipe 20 as shown in FIG.

In particular, referring to FIG. 13, which is a cross-sectional view of the XIII-XIII line of FIG. 1, the heating pipe 20 is arranged along the pipe groove 84 of the prefabricated ondol block 80 to heat the entire sealing cavity 82. As a result, it exhibits excellent thermal insulation, soundproofing, and moisture proofing effect as well as high thermal efficiency.

The above description is only some preferred examples of the present invention, and of course, there can be various modifications to satisfy the technical idea of the present invention. However, if all these modifications satisfy the technical idea of the present invention, it should be included in the scope of the present invention, which is precisely specified in the following claims.

1 is a schematic view of a heating system according to the present invention.

2 is a block diagram showing a part of a heating system according to a first embodiment of the present invention;

3 and 4 are block diagrams showing different operating states of the heating system according to the first embodiment of the present invention, respectively.

5 is a block diagram showing a part of a heating system according to a second embodiment of the present invention;

6 and 7 are block diagrams showing different operating states of a heating system according to a second embodiment of the present invention, respectively.

8 is a block diagram showing a part of a heating system according to a third embodiment of the present invention;

9 and 10 are block diagrams showing different operating states of a heating system according to a third embodiment of the present invention, respectively.

11 is a cross-sectional view of the heat exchange means of the heat exchanger of the heating system according to the present invention.

12 is a cross-sectional view of a modification of the heat exchange means of the heat exchanger of the heating system according to the present invention.

13 is a cross-sectional view taken along the line XIII-XIII of FIG. 1.

<Description of the symbols for the main parts of the drawings>

10: boiler 12: boiler piping

14: burner 20: heating piping

30: freezer 32: compressor

34 condenser 36 expander

38: vaporizer 50: heat exchanger

52,54: 1st and 2nd heating water pipe 56,58: 1st and 2nd refrigerant pipe

60: heat exchange means

Claims (8)

A heating pipe buried at the bottom; A boiler for providing a boiler pipe connecting both ends of the heating pipe to circulate the heating water, and heating the heating water delivered to the boiler pipe through one end of the heating pipe and transferring the heating water to the other end of the heating pipe; A refrigerator equipped with a compressor, a condenser, an expander, and a vaporizer to circulate the refrigerant; A first heating water pipe connected to one end of the heating pipe, a second heating water pipe connected to the other end of the heating pipe, a first refrigerant pipe connected to the compressor, and a second refrigerant pipe connected to the condenser or the expander, A heat exchanger configured to exchange heat between the heating water flowing through the first heating water pipe and the refrigerant flowing through the first refrigerant pipe to transfer the heating water to the second heating water pipe, and to transfer the refrigerant to the second refrigerant pipe; A first check valve installed in the first or second heating water pipe; A second check valve installed at the other end of the second heating pipe; And Including a transfer pump installed in the first or second heating water pipe, the first mode for passing the heating water through the heat exchanger in accordance with the on / off of the transfer pump or the second mode for passing the heating water through the boiler Heating system using waste heat of the refrigeration cycle to switch. The method according to claim 1, A first valve installed at one end of the heating pipe and selectively connecting one end of the heating pipe and the first heating water pipe, and installed at the other end of the heating pipe to selectively connect the other end of the heating pipe and the second heating water pipe; A second valve installed between the compressor and the condenser to selectively connect the first refrigerant pipe to the compressor, and installed between the condenser and the expander to selectively select the second refrigerant pipe to the expander. Heating system using the waste heat of the refrigeration cycle further comprises at least one of the fourth valve connected to the. The method according to claim 1, The heat exchanger, A housing providing a heating water inlet to which the first heating water pipe is connected and a heating water outlet to which the second heating water pipe is connected, and a heat exchange area defined therein; A refrigerant circulation pipe connected to the first and second refrigerant pipes at one end and the other end thereof and penetrating the housing; And a heating water circulation pipe connecting the heating water inlet and the heating water outlet to the inside of the housing and wound along an outer surface of the refrigerant circulation pipe. delete delete delete delete delete

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