KR20070007644A - A heat pumping unit for a bathtub - Google Patents

Abstract

A heat pump unit for a bath is provided to heat water for the bath by using heat from a steam boiler and waste heat. A heat pump unit for a bath includes a bath(15), a direct water storage tank(1), a steam boiler(100), a waste heat recollecting device(17), a waste water tank(19), a heat exchange mounting part(12), a steam heat recollecting device, and a hot water storage tank(6). The bath supplies cold water and hot water to select a temperature of water supplied into the bath. The direct water storage tank supplies the cold water to a place in which the cold water is required. The steam boiler provides hot steam into a sauna room. The waste heat recollecting device passes a high temperature of waste water to heat a low temperature of water. The waste water tank extracts heat remaining in the waste heat. The heat exchange mounting part has a heat exchanger for receiving a heated direct water to increase a temperature of the direct water. The steam heat recollecting device passes waste steam to increase a temperature of the direct water to supply the direct water into the hot water storage tank.

Description

Bath Heat Pump Unit {A Heat Pumping Unit for A Bathtub}

1 is a conceptual diagram of the present invention.

Figure 2 is a configuration diagram of various devices connected to the heat exchanger unit of the present invention.

3 is a view showing in detail the concept of the present invention.

Figure 4 is a block diagram of the hot water circulation line of the present invention.

5 is a detailed configuration of the heat exchanger unit of the present invention.

Figure 6 is a waste water tank configuration of the present invention.

7 is a plan view of the evaporation line of the present invention.

8 is a plan view of the air nozzle of the present invention.

Explanation of symbols on the main parts of the drawings

1: water supply tank

2: cold water supply pipe

3: branch pipe

4: recovery tube

5: shut-off valve

6: hot water storage tank

7: solenoid valve

8: low temperature inlet pipe

9: Circulation motor

10: book valve

11: auxiliary supply pipe

12: heat exchanger unit

13: high temperature supply pipe

14: hot water supply pipe

15: Bath

16: 1st wastewater discharge pipe

17: wastewater heat recovery system

18: second wastewater discharge pipe

19: wastewater tank

20: wastewater discharge pipe

21: refrigerant evaporation line

22: heat recovery line

23: water inlet pipe

24: heat exchanger

25: Yubuli

26: compressor

27: discharge line

28: inflow line

29: condensation line

30: receiver

31: hot liquid

32: evaporation line

33: recovery line

34: hot water inlet line

35: steam heat recovery machine

36: high temperature hot water supply line

37: condensation steam inlet line

38: Condensate Wastewater Line

41: blower

42: boiler stack

43: blower

44: air nozzle

45: evaporator

46: discharge pipe

47: discharge pipe

48: expansion valve

The present invention relates to a heat pump apparatus for a bath, and in particular, by setting a first hot water supply line using a waste water heat recovery machine and a second hot water supply line using a waste water tank and a heat exchanger, it is possible to quickly deliver the necessary hot water to the hot water supply tank. The present invention relates to a heat pump apparatus for a bath.

In general, the cold water used in public baths is supplied to the cold water or shower directly through the cold water supply line from the hot water supply tank, and in the case of hot water, about 50 degrees by various boilers using fossil fuel or other electric energy. It is heated and then stored in a hot water storage tank and, if necessary, supplied to a hot water or shower in a bathroom through a hot water supply line.

Therefore, the bather can take a bath by mixing cold water and hot water at an appropriate temperature by operating a switch or a button.

As described above, the cold and hot water supplied to the hot or cold bath and the shower of the bathroom are mixed with each other and drained. The waste water discharged in this way contains at least 30 ° C. or more heat according to the temperature of the hot water. Since it is not desirable in terms of efficient use of energy, it is not desirable to discharge the heat contained in the waste water as it is, so various waste heat recovery devices for recovering the heat contained in the waste water and reusing it for heating the hot water are used in the hot water facilities of the bathroom. have.

As the waste heat recovery apparatus used in the hot water facilities of the bathroom as described above, the most representative one is currently applied to the refrigerant type heat exchange system consisting of a compressor, a heater (condenser), an expansion valve, and an evaporator to heat the hot water and heat recovery of the waste water. System.

The system heats the hot water by using the high temperature and high pressure refrigerant gas introduced into the concentrator from the compressor, then introduces the hot water into the hot water storage tank, and simultaneously discards the refrigerant gas introduced into the evaporator from the heater through the expansion valve from the bath. It was evaporated as heat from the wastewater and fed back to the compressor.

The conventional heat pump system for a bath as described above can achieve efficient management of energy by recovering wastewater heat and reusing it for heating hot water, and can prevent air pollution by reducing the use of fossil fuels such as oil and gas. There is one advantage to this.

However, since the condenser acting as a heater is directly connected to a large-capacity hot water storage tank, it takes a lot of time to heat the hot water in the hot water storage tank to the required temperature, especially in the case of a public bath, a heat pump at the start of operation. There was a problem that excessive electrical energy is consumed in the operation of the system.

In other words, in the case of public baths, hot water of a certain temperature should be received in advance in the bath before the bath is opened so that the bathers can take a bath immediately. During the night, the heat pump system is stopped and the temperature of the hot water stored in the hot water tank is about 40 It is lowered to about ℃, which is required to heat the water stored in a large hot water tank at once in order to supply hot water to the bath about 50-60 ℃, not only consumes a lot of electrical energy in the operation of the heat pump system but also compressor There was a problem with the operation of a considerable crowd.

In particular, the operation of the heat pump system is very difficult because the heat pump system does not have wastewater discharged to the wastewater heat recovery unit that is the evaporation source before the public bath is opened. It is used to heat the separate boiler, which causes severe energy waste as well as the problem of causing air pollution by using fossil fuel.

In addition, even when the wastewater heat recoverer operates the heat pump system in time at the time of discharge of the wastewater, the wastewater heat is used only for the evaporation of the refrigerant and discharged, which is preferable in view of the effective heat recovery of the wastewater and the efficient operation of the heat pump system. Cause the phenomenon.

In addition, during the normal operation of the heat pump system, it is necessary to properly control the amount of hot water to be heated in the heat pump system and the operation of the accompanying compressor according to the amount of hot water used in the bathroom. Regardless of the amount of hot water used in the system, the heat pump system was inefficiently operated due to the constant heating of a constant amount of hot water, and inefficient operation of the heat pump system caused excessive load on the compressor. If there is a problem that the compressor is frequently broken.

The present invention is to solve the above problems, the purpose of using only the heat of the steam boiler and the rest of the waste water heat to provide the bath hot water.

As a means for achieving the above object,

The present invention provides a bath for supplying cold water and hot water so that the user selects a temperature suitable for bathing by appropriate adjustment; A direct water storage tank installed on a rooftop and supplying cold cold water to an area where male or female hot water and cold water are needed; A steam boiler for providing a relatively high temperature steam in a sauna room installed in a male bath or a female bath; A wastewater heat recovery unit configured to pass wastewater in a relatively high temperature state flowing out of the bath, pass cold water in a relatively low temperature state from a direct water storage tank, and increase the temperature of the cold water to output it to a hot water storage tank; A wastewater tank passing through the wastewater passing through the wastewater heat recovery unit and extracting heat remaining in the wastewater once again using an evaporator installed therein; A heat exchanger device unit including a heat exchanger for receiving the heat generated from the waste water tank through a compressor and receiving the first heated water directly through the waste water heat recovery unit through a circulation pump to increase the temperature of the direct water; A steam heat recovery unit installed in the heat exchanger unit and passing direct water heated by a heat exchanger and passing the waste steam through a sauna room to make the direct water into relatively hot water and supplying it to a hot water storage tank; It is characterized in that it comprises a hot water storage tank for receiving the first heated direct water from the waste water heat recovery, after circulating the heated direct water to the heat exchanger unit receives and stores the hot water.

In addition, the steam heat recovery unit is connected to at least two or more in sequence, the direct supply line is connected through one side surface, the direct discharge line is connected through the side side surface, the waste steam inlet line is connected through one side of the housing And it is made by connecting the waste steam output line through the other side of the housing.

In addition, the lower end of the waste water tank is provided with an air nozzle formed with a plurality of holes for injecting the air to the upper, connecting a blower for supplying external air to the air nozzle, the heat on the evaporator by providing air thereon It is characterized by the fact that the boiler stack is further penetrated to output the furnace.

In addition, the air nozzle is characterized in that at least two or more connected in parallel.

In addition, the output line of the waste water tank is characterized in that connected to the air conditioning device.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a conceptual diagram of the present invention, by receiving heat from the waste water temperature of 24 to 34 degrees (℃) using an evaporator as shown in the drawing to lower the temperature of the waste water to 5 degrees, and outputs the heat condenser ( Heat exchanger) and a steam heat recoverer to output the first 8-12 degrees Celsius to 75 degrees Celsius.

Figure 2 briefly shows the various devices connected to the heat exchanger unit of the present invention, the heat exchanger unit is supplied with heat from the wastewater storage tank and the steam boiler to the water at a temperature of 75 degrees to supply hot water storage tank, 5 degrees Provided cold water to the air conditioner and cooling device to maximize the use of cold and hot water.

3 illustrates the concept of the present invention, and when the output temperature of a bath consisting of a male bath and a female bath is 34 degrees (° C.), the first heat is absorbed through the wastewater heat recovery unit 17, and the temperature is about 28 degrees (° C.). This is put into a heat exchanger using a circulator, and also extracts the remaining heat by operating a refrigerant system in the wastewater tank, and then passes through a steam heat recovery unit to transfer water of 75 degrees (℃) to the hot water storage tank. .

4 is a block diagram of the hot water circulation line of the present invention,

5 is a detailed configuration of the heat exchanger unit of the present invention,

6 is a configuration of the waste water tank of the present invention,

7 is a plan view of the evaporation line of the present invention;

8 is a plan view of the air nozzle of the present invention;

The present invention is largely a bath 15, a sauna room 110, a direct water storage tank 1, a steam boiler 100, a wastewater heat recovery unit 17, a wastewater tank 19, a heat exchanger unit ( 12), the heat exchanger unit 12 includes a waste steam heat recovery 35 for recovering waste steam heat.

The bath 15 is installed in the bath, and the user is supplied with cold water and hot water so that the user can select a temperature suitable for bathing by appropriate adjustment, and is usually divided into a female bath and a male bath.

The direct water storage tank (1) is connected to the groundwater through a pipe to raise and store the groundwater or installed on the rooftop to store the water supplied from the outside, and to send cold water of relatively low temperature to the men's or women's baths and other necessary areas cold Supply cold water.

The steam boiler 100 provides a relatively high temperature steam of about 135 degrees to a sauna room installed in a male bath or a female bath, and adds various materials to the room as needed to enjoy a high temperature sauna.

The wastewater heat recovery unit 17 passes the waste water of the relatively high heat state flowing out of the bath by using the first wastewater discharge pipe 16, and also passes the cold water of the relatively low temperature state from the direct water storage tank 1 to the temperature of the cold water. It raises and releases to the outside, passing the direct water is transferred to the hot water storage tank (6) to be used immediately in the bath. Preferably, the discharge pipe is made of a spiral tube so that more area is in contact with the water.

The wastewater tank 19 passes the wastewater passing through the wastewater heat recovery unit 17 using the second wastewater discharge pipe 18, and extracts the heat remaining in the wastewater once again by using an evaporator 45 installed therein. It serves to absorb the heat of the waste water completely. In the drawings, reference numeral 47 denotes a discharge pipe connected to the waste water tank 19, 46 denotes a discharge pipe output from the waste water tank 19 to the outside, and 50 is a manhole cover.

The heat exchanger unit 12 receives the heat generated from the wastewater tank 19 through the liquid heater 31 and the compressor, and also provides the direct water through the wastewater heat recovery unit 17 through the circulation pump 9. The hot water received from the wastewater tank 19 is brought into contact with the direct water delivered through the water inlet pipe 23, and serves to increase the temperature of the direct water.

That is, since the waste water tank 19 has various heat exchange structures formed by refrigerant pipes such as the evaporator 45, the high temperature and high pressure refrigerant gas discharged from the compressor 26 is passed through the Yubuli 25. At the same time, the water supplied into the heat exchanger 24 is heated with hot water through heat exchange with the refrigerant, and thus the refrigerant condensed in the heating of the water is condensed in the receiver 30 and the expansion valve 48. When the refrigerant flows into the wastewater tank 19, the refrigerant recovers heat of the wastewater stored in the wastewater tank 19, and is re-introduced into the compressor 26 through the liquid heater 31 while being evaporated. It can be reused for the heating of hot water.

In the above, reference numeral 32 is an evaporation line connected to the evaporator, 33 is a recovery line connected to the liquid heater from the evaporator, 28 is a compressor inlet line, 27 is a compressor discharge line, and 29 is a condensation line directed to the receiver.

The waste steam heat recovery unit 17 passes the direct water heated by the heat exchanger unit 12 through a pipe, and passes the waste steam through the sauna room 110 so that the waste steam contacts the direct connection pipe. It makes direct water into relatively high temperature water and supplies it to a bath or stores it as a hot water storage tank.

On the other hand, the wastewater tank 19 is provided with an evaporator 45 as described above, an expansion valve 48 for passing the low-temperature low-pressure liquid to the evaporator 45 is provided, the heat exchange device unit 12 In order to absorb the heat from the waste water tank (19), a heat exchanger (31) connecting the recovery line and the evaporation line, the receiver 30, the compressor 26, the Yubuli 25, the heat exchanger 24 The heat exchange cycle of the wastewater tank 19 and the heat exchanger 24 is carried out in the evaporator 45 and the expansion valve 48 and the heat exchanger unit 12 present in the wastewater tank 19. A compressor 26, a heat exchanger 24, and a receiver 30 are installed, and the remaining heat of the wastewater passing through the wastewater tank 19 is recovered by an evaporator and introduced into a direct water line passing through the heat exchanger unit 12. Let's go.

In addition, the heat exchanger unit 12 is equipped with a steam heat recovery unit 35 for recovering steam heat, the steam heat recovery unit 35 allows the steam passing through the sauna room 110 to penetrate the inside, Directly absorbing the heat from the waste water also penetrates the interior to heat the direct water reabsorbing the heat remaining in the steam to a high temperature to supply relatively hot water directly to the hot water storage tank (6) or bath (15). .

To this end, the condensation steam inlet line 37 and the condensate wastewater line 38 are respectively connected to the steam heat recoverer 35, and the hot water inlet line 34 and the output line 36 are respectively connected through left and right sides. And multiple stages are connected for more efficient steam heat recovery.

In the wastewater tank 19, an evaporator 45 is installed at an upper portion thereof, and a boiler stack 42 is installed below it, and an air nozzle 44 is installed thereunder.

The boiler stack 42 refers to an output tube of the steam boiler 100, and the heat of the steam boiler 100 passes through, and in this case, the steam boiler is injected by injecting air through the air nozzle 44 using the blower 43. The heat of 100 is transmitted through the evaporator 45 to better absorb the heat of the wastewater passing through the wastewater tank 19.

That is, by providing external air to the air nozzle 44 to dissipate the heat generated in the boiler stack 42 to the top, the heat is transferred to the evaporator 45 to recover the heat of the waste water well. Reference numeral 41 is a blower for forcibly discharging the combustion air exiting through the stack.

The arrangement of the present invention is composed of two heat recovery lines.

The first recovery line is a line receiving the heat from the wastewater heat recovery unit 17 by connecting the direct water storage tank 1, the wastewater heat recovery unit 17 and the hot water tank (6).

The second recovery line is a line receiving heat from the wastewater tank 19 and the steam boiler 100 by connecting the wastewater tank 19, the heat exchanger unit 12, and the hot water tank 6.

As an additional device, it is connected to the heat exchanger 24 of the heat exchanger unit 12 by a pair of circulation pumps 9 having a book valve 10 for transferring the fluid only in one direction to the lower portion of the hot water storage tank. have.

In particular, the second recovery line is the first heat to form the evaporator 45 in the waste water tank 19, the steam boiler 100 heats the heat of high heat in a predetermined place and returns to the condensation line immediately before reaching the condensate By using condensing steam heat of 125-135 ℃ inside, heat pump 1st 55 ℃ rising heat secondary steam heat is formed at high temperature of 75 ℃. It is possible to prevent and to supply the hot water of the required temperature in a shorter time to the bathroom, and effectively waste water and steam heat discarded from the bath and at the same time increase the temperature of the waste water tank 19 by using the stack 42 By minimizing the load on the compressor 26 of the heat exchanger unit 12 to achieve a smooth operation of the heat exchanger unit 12 at the same time.

Hereinafter, the present invention will be described in more detail.

The present invention provides a direct storage tank (1) for supplying unheated direct water as an essential component for using a bathroom, a hot water storage tank (6) for temporarily storing hot water and supplying it to a bath, and the hot water storage tank. Baths 15 which receive water from 6 and supply them to the user and wastewater discharge lines 16 and 18 for discharging wastewater discarded from the baths 15 are provided.

Such components are essential components of all baths, and of course, the components of the present invention also include the above components.

In addition to the above apparatus, the heat pump and steam heat recovery system for a bath according to the present invention is a hot water supplying hot water to the bath 15 from a direct water storage tank 1 through a wastewater heat recovery 17 and a hot water storage tank 6. A supply line and a heat exchanger unit 12 for recovering heat of the wastewater through the wastewater tank 19 while supplying hot water through the hot water supply line are installed, and inside the heat exchanger unit 12, a hot water supply line. And a heat exchanger respectively connected to the wastewater discharge line and the compressor are connected to the compressor by a refrigerant pipe, and the steam heat recovery unit 35 is installed to be connected to the direct water storage tank 1 and the hot water storage tank 6.

Branching pipe (3) connected to the direct water supply tank (1) and the hot water supply tank (6) connected to each other with a locking device (5) in order to facilitate the flow of the heat exchange device (12) And the first and second circulation pumps connected to the wastewater heat recovery unit 17 by a return pipe 4 and provided with a book valve 10 at an input side of the heat exchanger 24 of the heat exchanger unit 12. 9) is connected to the auxiliary water supply pipe 11 mounted in parallel, and the other pipe of the auxiliary water supply pipe 11 is connected to the hot water supply line on the recovery pipe 4 side, and extends from the waste water heat recovery unit 17. The wastewater discharge line 18 is provided with a wastewater tank 19.

As described above, the evaporation line of the refrigerant extending from the heat exchanger 24 of the heat exchanger unit 12 forms the evaporator 45 in the wastewater tank 19 and extends from the evaporator 45. The refrigerant recovery line is connected to the compressor 26 by the refrigerant recovery line which is raised by using the heat of the stack 42 installed at the lower end of the waste water tank 19.

Hereinafter, the operation of the present invention will be described.

First, when direct water is supplied from the direct water supply tank 1, the direct water is output to the branch pipe 3 by the direct supply stop lock device 5, and the direct water is supplied heat from the waste heat through the wastewater heat recovery unit 17. Received, and the dewatered direct water is conveyed through the recovery pipe (4), and moves to the hot water storage tank (6) allows to supply hot water to the bath (15) consisting of a male bath or a female bath. For reference, the direct supply stop lock device 5 is for supplying water directly to the hot water storage tank 6 in an emergency, and keeps the lock state in normal times.

The heat exchanger unit 12 is connected to the hot water at a relatively low temperature using the solenoid valve 7 through the circulation motor 9, the book valve 10, and the auxiliary supply pipe 11 using the low temperature inlet pipe 8. After passing through the high temperature supply pipe 13 to circulate back to the hot water tank (6).

Then, the water used in the bathhouse 11 through the hot water supply pipe 14 passes through the wastewater heat recovery unit 17 through the first wastewater discharge pipe 16, and the wastewater tank 19 through the second wastewater discharge pipe 18. Is installed and used in the bath water is discharged to the outside through the first wastewater discharge pipe 16, wastewater heat recovery unit 17, the second wastewater discharge pipe 18, the wastewater tank 19, the wastewater discharge pipe ( 20), the final output waste water is about 5 degrees and can be connected to an air conditioning system to be used as an air conditioning refrigerant.

The hot water storage tank 6 uses a tank having a storage capacity of 60 to 100 drums, which is generally applied to public baths, and the usual heat pump is difficult to use when there is no waste water, but the present invention is a waste water tank 19. The air nozzle 44 is installed at the lower end, and the boiler stack 42 is installed at the upper layer so that the steam boiler 100 or the heat exchanger unit 12 can be operated immediately. Transfer to operate the heat exchange unit 12 and recover the steam recovery 35 to minimize the fluid energy.

Then, only the water of the direct water storage tank (1) flowing into the heat exchanger unit 12 is introduced, and the electrical device is introduced to enter the heat exchanger unit (12) at the lower end of the hot water storage tank (6) and each of the lines The circulation pump 9 is installed for the inflow, and it is a control device for controlling the temperature at will, so that the flow rate can be adjusted at will.

In order to arrange this, the direct water storage tank (1) flows into the branch pipe (3) through the cold water supply pipe (2), locks the glow valve (5) and recovers the heat recovered through the wastewater heat recovery unit (17). 4) to the hot water storage tank (6) and at the same time using the solenoid valve (7) through the low-temperature inlet pipe (8) through the check valve (10), the auxiliary supply pipe (11) through the circulation motor at the same time the boiler device ( 12) and the wastewater heat 19 is recovered through the refrigerant evaporation line 21, and the hot water inflow line 34 through the heat medium and condensate line 37 inflow and the condensate wastewater line 38 through the heat recovery line 22. Through the secondary hot and hot water supply pipe 36 through the steam heat recovery 35 through the through, the hot water supply pipe (14) through the hot water storage tank (6) through the high temperature supply pipe (13) can use the bath (15). have.

In the wastewater tank 19, an evaporator 45 is formed in communication with the evaporation line 32 of the refrigerant extending from the heat exchanger 26 of the heat exchanger unit 12, and is extended from the evaporator 45. A refrigerant recovery line 33 is installed inside the heat exchanger unit 12 and connected to the steam heat recovery unit 35 to recover high temperature heat.

As described above, the present invention recovers wastewater heat primarily using a wastewater heat recovery machine, and then recovers heat remaining in the wastewater tank by a refrigerant system, and recovers steam heat using a steam heat recovery system. Provides the effect of maximization.

Claims (5)

A bath for supplying cold water and hot water so that the user selects a temperature suitable for bathing by appropriate adjustment; A direct water storage tank installed on a rooftop and supplying cold cold water to an area where male or female hot water and cold water are needed; A steam boiler for providing a relatively high temperature steam in a sauna room installed in a male bath or a female bath; A wastewater heat recovery unit configured to pass wastewater in a relatively high temperature state flowing out of the bath, pass cold water in a relatively low temperature state from a direct water storage tank, and increase the temperature of the cold water to output it to a hot water storage tank; A wastewater tank passing through the wastewater passing through the wastewater heat recovery unit and extracting heat remaining in the wastewater once again using an evaporator installed therein; A heat exchanger device unit including a heat exchanger for receiving heat generated by the waste water tank through a compressor and receiving a primary heated water through a waste water heat recovery unit through a circulation pump to increase the temperature of the direct water; A steam heat recovery unit installed in the heat exchanger unit and passing direct water heated by a heat exchanger and passing the waste steam through a sauna room to make the direct water into relatively hot water and supplying it to a hot water storage tank; Bath water heat pump device characterized in that it comprises a hot water storage tank for receiving the first hot water directly from the waste water heat recovery, and then circulating the hot water is heated to the heat exchanger unit receives and stores the hot water. . The method of claim 1, The steam heat recovery unit is connected to at least two or more stages in sequence, and connects the direct supply line through one side surface and the direct discharge line through the side surface, and connects the waste steam inlet line through the housing side. Heat pump device for the bath, characterized in that made by connecting the waste steam output line through the other side. The method of claim 1, The waste water tank has an air nozzle having a plurality of holes formed therein for discharging air upwards at a lower end thereof, and connects a blower for supplying external air to the air nozzles, and outputs heat to the evaporator at the upper part of the air nozzles. Heat pump device for a bathroom, characterized in that made by further passing through the boiler stack. The method of claim 1, The air nozzle is a heat pump device for a bath, characterized in that at least two or more connected in parallel. The method of claim 1, The output line of the waste water tank is a bath heat pump device, characterized in that connected to the air conditioning device.

Images