KR100664843B1 - Heating Heat Pump - Google Patents

Abstract

A heat pump is provided to heat water by using the refrigerant which is compressed into a high temperature high pressure condition during process of compressing the refrigerant in a compression chamber. A heat pump comprises a compressor(11) in which a valve body(15) is arranged so that the valve body expands or contracts by the pressure applied from the working fluid in a compression chamber; an automatic channel converting valve(17) communicated to the valve body; a working fluid circulation pipe(23) connected to an inlet port(18a) and an outlet port(18b) of the automatic channel converting valve; a first circulation pump(24) arranged on the working fluid circulation pipe so as to press a working fluid; a pressure tank(27) arranged on an extension pipe(26) branched from the working fluid circulation pipe so that pressure is applied to the working fluid; a refrigerant circulation pipe(16) which is connected to the installation areas of an inlet valve(28a) and an outlet valve(28b) of the compressor, and has a path on which a bellows pipe(30) is arranged; a pressure reduction valve(31) arranged on the refrigerant circulation pipe so as to convert the refrigerant into a low temperature low pressure liquid refrigerant; a first heat exchanger(32) which accommodates the bellows pipe of the refrigerant circulation pipe so that heating water is heat exchanged with a high temperature high pressure refrigerant; a heating water circulation pipe(33) connected to an inlet side and an outlet side of the first heat exchanger so as to form a closed circuit; a second circulation pump(35) arranged on the heating water circulation pipe so as to circulate heating water; and a fan coil(39) arranged on the heating water circulation pipe so as to generate hot air in accordance with the operation of a heating fan(40).

Description

Heat pump for heating {omitted}

1 is a configuration diagram showing a conventional heat pump for heating

Figure 2 is a block diagram showing a heat pump for heating of the present invention

Figure 3 is a longitudinal sectional view showing the configuration of the automatic flow path switching valve applied to the present invention

Explanation of symbols for the main parts of the drawings

11: compressor 13: compression chamber

15 valve body 17 flow path automatic switching valve

21: rotating body 23: working fluid circulation pipe

25: first circulation pump 27: pressure tank

30: bellows pipe 31: pressure reducing valve

32: first heat exchanger 33: heating water circulation pipe

35: second circulation pump 36: second heat exchanger

37: third heat exchanger 38: auxiliary heating means

39: fan coil 41: fourth heat exchanger

The present invention relates to a heating heat pump capable of producing hot water as well as heating in a room. More specifically, a heating heat for producing hot water as well as heating water using a tubular compressor without using a mechanical compressor. It is about a pump.

FIG. 1 is a block diagram showing a conventional heat pump for heating, in which a compressor (1), a first heat exchanger (3), an expansion valve (5), and a second heat exchanger (6) are connected to a connecting pipe (7). The refrigerant circulates through the heat exchange to produce the heating water.

At this time, the first heat exchanger (3) is connected to the hot water tank (8) so that the water of a relatively low temperature from the hot water tank (8) is supplied to the first heat exchanger (3) to exchange heat with the refrigerant to provide hot water Then it is delivered to the hot water tank (8) again.

In addition, a conduit 10 is connected to the second heat exchanger 6 so as to receive heat for evaporation of the refrigerant from waste hot water in which the hot water of the hot water tank 8 is used.

In this case, the second heat exchanger 6 generally uses a cell and tube method.

Reference numeral 2 denotes an oil / water separator for separating oil in the refrigerant, and 4 denotes a receiver for allowing only the refrigerant in the liquid state to be delivered to the expansion valve 5.

In the prior art having such a configuration, the high-temperature, high-pressure gaseous refrigerant compressed by the compressor 1 is supplied to the first heat exchanger 3 to transfer heat to the cold water transferred from the hot water tank 8 to supply hot water. At this time, the refrigerant is condensed and is in a low temperature, high pressure liquid state.

The refrigerant condensed as described above is transferred to the receiver 4, and only the liquid refrigerant in the receiver 4 is transferred to the expansion valve 5 so that the refrigerant is expanded to be easily evaporated in the second heat exchanger 6 so as to be relatively expanded. This results in a low temperature, low pressure liquid state.

The expanded refrigerant is evaporated by receiving the heat of the waste hot water from the second heat exchanger 6 to a gas state of relatively high temperature and low pressure.

After that, the refrigerant exiting the second heat exchanger 6 is transferred to the compressor 1 to circulate and heat the water supplied from the hot water tank 8.

However, such a conventional heat pump is designed to operate the entire cycle only when the working fluid receives heat from the waste hot water, but the waste hot water is not always supplied in a constant amount, and the supply and discharge of the waste hot water supplied to the second heat exchanger is prevented. Since it is impossible to control and cannot supply the amount of heat required to the second heat exchanger at all times, it is not practically used because it does not function properly.

In addition, when the temperature of the supplied waste hot water is too low, the operation of the compressor is not properly performed, and thus the hot water cannot be produced properly.

In addition, when the supply amount of the waste hot water is small, the operation of the cycle is not smooth, and the production of the hot water is impossible. Accordingly, a load is applied to the compressor when restarting, thereby consuming excessive power.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and continuously maintains the refrigerant in the compression chamber while expanding or contracting the valve body according to the pressure of the working fluid without using a conventional mechanical compressor such as a centrifugal compressor or a scroll compressor. The purpose is to obtain a heating water by heating the water to a high temperature by using a refrigerant compressed at high temperature, high pressure in the compression process.

Another object of the present invention is to obtain hot water by allowing the high temperature heating water circulating in the heating water circulation pipe to continuously exchange heat with cold water.

According to an aspect of the present invention for achieving the above object, a flow path for opening and closing the flow path is provided through the compressor and the valve body is expanded or contracted by the pressure of the working fluid in the compression chamber, and the valve body provided in the compressor An automatic switching valve, a working fluid circulation pipe connected to an inlet and a discharge port of the flow path automatic switching valve, respectively, to form a closed circuit, a first circulation pump installed on the working fluid circulation pipe and pressurizing the working fluid; A pressure tank installed on an extension pipe branched from a working fluid circulation pipe and connected to an installation portion of a suction valve and a discharge valve of the compressor, and a bellows pipe on a path, and a closed circuit And a refrigerant circulation pipe constituting the cooling medium, and installed on the refrigerant circulation pipe to reduce the refrigerant to a low temperature, low pressure liquid refrigerant. A first heat exchanger for receiving a pressure reducing valve and a bellows pipe of the refrigerant circulation pipe to exchange heat with the refrigerant having a high temperature and a high pressure, and connected to an inlet side and an outlet side of the first heat exchanger, respectively, and closed. A heating water circulation pipe constituting the circuit, a second circulation pump installed on the heating water circulation pipe to circulate the heating water, and installed on the heating water circulation pipe so that hot air is generated in accordance with driving of the heating fan. Provided is a heat pump for heating, comprising a fan coil.

Hereinafter, with reference to Figures 2 and 3 showing the present invention as an embodiment in more detail as follows.

Figure 2 is a configuration diagram showing a heat pump for heating of the present invention and Figure 3 is a longitudinal sectional view showing the configuration of the flow path automatic conversion valve applied to the present invention, the compressor 11 is applied to the present invention is not a mechanical compressor tubular compressor to be.

That is, the condensation is formed convexly on both sides to maintain airtightness by packing (not shown) and expand or contract by pressurization of the working fluid 14 in the compression tank 12 forming the compression chamber 13. A tubular valve body 15 is provided.

At this time, the material of the valve body 15 should be made of a rubber material that can withstand high temperature and high pressure because the refrigerant changes phase into a gas of high temperature and high pressure according to the compression of the refrigerant.

The capacity of the compressor 11 can be produced in an appropriate size according to the size of the heating facility, or by connecting several small compressors 11 in parallel to the refrigerant compressed at high temperature and high pressure in one refrigerant circulation tube 16. You can also cycle through).

A lower flow path automatic switching valve 17 for opening and closing a flow path is provided at a lower portion of the valve body 15 installed in the compressor 11, and the flow path automatic switching valve 17 has a suction port ( 18a and the discharge port 18b are separated from the housing 18, the suction and discharge ports formed in the housing and the suction valve 20a and the discharge valve 20b connected to the rod 19 and the motor (not shown) It is composed of a rotating body 21, the rotational speed is reduced by the reducer in accordance with the driving of the drive), and the connecting rod 22 hinged eccentrically to one end of the rod and the rotating body.

Therefore, as the rotating body 21 is repeatedly rotated by the driving of the motor, the rotational motion is converted into a linear reciprocating motion by the connecting rod 22 and transmitted to the rod 19, so that the inlet port 18a and the outlet port 18b are It is opened and closed repeatedly.

A working fluid circulation pipe 23 constituting a closed circuit is connected to the suction side and the discharge side of the flow path automatic switching valve 17, and the working fluid 14 is driven on the working fluid circulation pipe by the operation of the motor 25. The first circulation pump 24 for pressurizing () is installed, and on the extension pipe 26 branched from the working fluid circulation pipe, a pressure tank 27 for applying pressure (about 15 kg / cm ² ) to the working fluid is provided. It is installed.

Of course, when a plurality of compressors 11 are installed in parallel, operating fluids supplied by driving of the first circulation pump 24 are installed by installing flow path automatic conversion valves 17 under each valve body 15. It is to be branched from the working fluid circulation pipe 23 to be introduced into the valve body (15).

In addition, the refrigerant circulation pipe 16 through which the refrigerant circulates is connected to the installation portions of the suction valve 28a and the discharge valve 28b of the compressor 11, respectively, and the heating water 29 and the heat on the refrigerant circulation pipe. The bellows pipe 30 is provided so that exchange | exchange is possible, and the pressure reducing valve 31 which pressure-reduces low temperature, low pressure liquid refrigerant | coolant is provided in the rear end of the bellows pipe.

Outside the bellows pipe 30 formed in the coolant circulation pipe 16, the bellows pipe is accommodated so that the first heat exchanger 32 is formed to allow the heating water 29 to exchange heat with the refrigerant having a high temperature and high pressure. Is installed in the fork and the discharge side of the first heat exchanger is connected to the heating water circulation pipe 33 to form a closed circuit to circulate the heating water, respectively, and the driving of the motor 34 on the heating water circulation pipe. Accordingly, a second circulation pump 35 for circulating the heating water 29 is provided.

In the case where the second heat exchanger 36 is further provided at the rear end of the pressure reducing valve 31 installed on the refrigerant circulation pipe 16, the liquid refrigerant that has been decompressed by the pressure reducing valve 31 and changed to low temperature and low pressure is heated. It can be converted to a low-temperature, low-pressure gas refrigerant, the second heat exchanger 36 may be used geothermal heat, solar heat, other waste heat.

In addition, when the third heat exchanger 37 is provided to use the waste heat of the heating water used on the heating water circulation pipe 33, the gas refrigerant changed to low temperature and low pressure by the second heat exchanger 36. It is possible to maximize the compression efficiency of the refrigerant in the compressor (11) because the phase is changed to a gas refrigerant of high temperature, low pressure by heating.

In addition, when the auxiliary heating means 38 such as an electric boiler or a gas boiler is further provided on the high temperature heating water circulation path heated from the first heat exchanger 32, the high temperature heat exchanged by the first heat exchanger 32 is performed. Since the temperature of the heating water 29 can be further increased, the heating effect can be maximized.

At a predetermined position of the heating water circulation pipe 33, a fan coil 39 is installed to obtain hot air by using high temperature heating water, and a heating fan 40 blowing hot air at the rear of the fan coil. ) Is installed.

At this time, the fourth heat exchanger 41 is further provided on the high temperature heating water circulation path to supply the cold water into the fourth heat exchanger. The heating water 29 and the cold water passing through the fourth heat exchanger are heated. The hot water is exchanged to obtain hot water.

In the drawing, reference numeral 42 denotes a pressure gauge indicating a pressure of the working fluid 14 in the pressure tank 27, and 43 denotes an overpressure for preventing the pressure in the pressure tank 27 from rising above a set pressure. It is a prevention valve.

Referring to the operation of the present invention configured as described above is as follows.

First, as shown in FIG. 2, since the valve body 15 is contracted and the pressure in the compression chamber 13 is reduced, the intake valve 28a is opened and the exhaust valve 28b is closed. It is a state which flows into the inside of the chamber 13.

At this time, since the intake valve 20a of the flow path automatic switching valve 17 is closed and the discharge valve 20b is open, the working fluid 14 in the valve body 15 is driven by the first circulation pump 24. Is escaped through the discharge port 18b, and the valve body 15 is kept in a contracted state.

In this state, when the rotating body 21 is rotated by the driving of the motor constituting the flow path automatic switching valve 17, the rotating motion of the rotating body is converted into a linear motion by the connecting rod 22 to pull the rod 19. Therefore, the intake valve 20a which was closed is opened, and the discharge valve 20b which was opened is closed.

In this way, if the inlet valve 20a is opened and the discharge valve 20b is closed, the first circulation pump 34 continuously operates, and a working fluid 14 having a predetermined pressure is introduced into the valve body 15. Since the valve body 15 is expanded, the high temperature and low pressure gas refrigerant introduced into the compression chamber 13 is gradually compressed. When the refrigerant in the compression chamber 13 reaches the set pressure, the refrigerant is opened. Since the intake valve 28a is closed and the closed exhaust valve 28b is opened, the gas refrigerant compressed to high temperature and high pressure is moved in the direction of the arrow through the refrigerant circulation pipe 16.

As described above, since the rotating body 21 is continuously rotated by the driving of the motor and the first circulation pump 24 is operated, the refrigerant in the compression chamber 13 is compressed to high temperature and high pressure. The refrigerant circulation tube 16 is circulated.

The bellows pipe 30 accommodated in the first heat exchanger 32 in the process of being circulated through the refrigerant circulation pipe 16 by being compressed into gas refrigerant of high temperature and high pressure in the compression chamber 13 by the above operation. When passing through, the heating water 29 passes through the second circulation pump 35 installed in the heating water circulation pipe 33 inside the first heat exchanger, so that the gas refrigerant of high temperature and high pressure is heated with the heating water. It will be replaced, and the heating water will become hot.

At this time, the high-temperature, high-pressure gas refrigerant passing through the bellows pipe 30 causes a phase change to a low-temperature, high-pressure liquid refrigerant by heat exchange with the heating water.

As described above, the refrigerant changed into a low temperature and high pressure liquid refrigerant is changed into a low temperature and low pressure liquid refrigerant while passing through the pressure reducing valve 31.

After the heating water 29 is heated by exchanging heat with a high-temperature, high-pressure gas refrigerant in the first heat exchanger 32 by the operation as described above, the heating water circulation pipe 33 is driven by the driving of the second circulation pump 35. In the process of circulating), the heating fan 40 is driven to blow hot wind from the fan coil 39, thereby enabling indoor heating.

At this time, the heating water heated by the auxiliary heating means 38 in the process of being discharged through the heating water circulation pipe 33 in a hot state by heat exchange with the high-temperature, high-pressure gas refrigerant in the first heat exchanger (32) In the case of further heating (29), a greater heating efficiency can be obtained.

On the other hand, the first heat exchanger (32) is heat-exchanged with the heating water 29, the phase change to a low-temperature, high-pressure liquid refrigerant, and the refrigerant that is changed to a low-temperature, low-pressure liquid refrigerant by the pressure reducing valve 31 geothermal and solar heat In the case of heating by the second heat exchanger 36 using waste heat or the like, the low-temperature and low-pressure liquid refrigerant turns into a low-temperature, low-pressure gas refrigerant.

In addition, the third heat exchange in which low-temperature, low-pressure gas refrigerant passes outside the heating water circulation pipe 33 that serves as the heating water and moves to the first heat exchanger 32 by driving the second circulation pump 35. When the gas 37 is installed, the low-temperature, low-pressure gas refrigerant is heated again by the heating water to be converted into a high-temperature, low-pressure gas refrigerant to maximize the compression efficiency by the compressor (11).

As described above, the tubular compressor 11 compresses the refrigerant into gas refrigerant of high temperature and high pressure, and heats the refrigerant compressed at high temperature and high pressure to exchange heat with water passing through the first heat exchanger 32. Although the process of heating by obtaining water has been described, in the case where cold water is supplied into the fourth heat exchanger by providing a fourth heat exchanger 41 on a high temperature heating water circulation path, the cold water exchanges heat with the heating water. Because it becomes hot, you can get hot water as well as heating water at the same time.

As described above, the heat pump of the present invention has various advantages as follows.

First, the heating water circulating in the closed circuit is heated by heat exchange with the refrigerant of high temperature and high pressure in the first heat exchanger according to the operation of the circulation pump, so the temperature of the heating water is changed according to the capacity of the compressor and the number of installation (parallel installation). You can easily adjust to the desired temperature.

Second, as the two circulation pumps are driven, the refrigerant can be compressed as well as the circulation of the heating water can significantly reduce power consumption due to the operation of the heat pump.

Third, in the process of circulating the heating water to its full function, the refrigerant is changed into a gas state of high temperature and low pressure by the third heat exchanger, thereby maximizing the compression efficiency of the refrigerant.

Fourth, when the fourth heat exchanger is installed on the high temperature heating water circulation path, hot water can be obtained.

Fifth, the low-temperature and low-pressure liquid refrigerant is heated by using a heat source using geothermal heat, solar heat, waste heat, etc. on the circulation path of the refrigerant located at the rear end of the pressure reducing valve, or low-temperature, The heating of the low pressure gas refrigerant doubles the function of the heat pump.

Claims (5)

A compressor provided with a valve body that expands or contracts by pressurizing a working fluid in the compression chamber, a flow path automatic switching valve installed through the valve body installed in the compressor to open and close the flow path, a suction port of the flow path automatic switching valve, A working fluid circulation pipe connected to the discharge port and constituting a closed circuit, a first circulation pump installed on the working fluid circulation pipe to pressurize the working fluid, and installed on an extension pipe branched from the working fluid circulation pipe. A pressure tank for applying pressure to the fluid, a refrigerant circulation pipe having a bellows pipe on the path and connected to the installation portions of the suction valve and the discharge valve of the compressor, and constituting a closed circuit; A pressure reducing valve installed in the chamber to reduce the refrigerant to a low temperature, low pressure liquid refrigerant, and a bellows pipe of the refrigerant circulation pipe. A first heat exchanger configured to exchange heat with the refrigerant having high temperature and high pressure, a heating water circulation pipe connected to an inlet side and an outlet side of the first heat exchanger to form a closed circuit, and the heating water And a second circulation pump installed on the circulation pipe to circulate the heating water, and a fan coil installed on the heating water circulation pipe to generate hot air according to the driving of the heating fan. The method of claim 1, And a second heat exchanger at a rear end of the pressure reducing valve installed on the refrigerant circulation pipe, to heat the low temperature and low pressure liquid refrigerant. The method of claim 1, And a third heat exchanger on the heating water circulation pipe to heat the low-temperature, low-pressure gas refrigerant using the waste heat of the heating water. The method of claim 1, The heating heat pump of claim 1, further comprising an auxiliary heating means on the high temperature heating water circulation path heated from the first heat exchanger. The method of claim 1, And a fourth heat exchanger on the high temperature heating water circulation path to obtain hot water.

Images