WO2008023889A1 - Heat pump-type heating apparatus of both air cooling and water cooling - Google Patents

Heat pump-type heating apparatus of both air cooling and water cooling Download PDF

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Publication number
WO2008023889A1
WO2008023889A1 PCT/KR2007/003505 KR2007003505W WO2008023889A1 WO 2008023889 A1 WO2008023889 A1 WO 2008023889A1 KR 2007003505 W KR2007003505 W KR 2007003505W WO 2008023889 A1 WO2008023889 A1 WO 2008023889A1
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WO
WIPO (PCT)
Prior art keywords
water
heat pump
heating
pipe
hot water
Prior art date
Application number
PCT/KR2007/003505
Other languages
French (fr)
Inventor
Eung Jun Lee
Original Assignee
Sconet Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020060118154A external-priority patent/KR100695975B1/en
Application filed by Sconet Co., Ltd. filed Critical Sconet Co., Ltd.
Publication of WO2008023889A1 publication Critical patent/WO2008023889A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1072—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water the system uses a heat pump

Definitions

  • the present invention relates to a heating apparatus, and more particularly, to a heat pump-type heating apparatus of both air cooling and water cooling which can prevent breakdown and malfunction of the heating apparatus due to sudden and excessive overload of a heat pump at initial start to heat the entire cold heating water remaining in a circulation conduit comprising an indoor heating pipe by only the heat pump in winter, in which a closed loop is formed to firstly heat and circulate a part of the entire heating water, and in which a three-way valve and an electronic valve are installed on both sides of first and second start circuit, and are organically opened and closed according to a set temperature value, thereby preventing the excessive overload at the initial start of the heat pump and gradually mixing the heating water heated by a given temperature with the remaining water in the entire circulation conduit.
  • Background Art
  • the separate water-cooled evaporator 100 is installed on the evaporator of the heat pump 30 to increase the thermal efficiency, in addition to an air- cooled hot water heating manner which is obtained from the refrigerant of the heat pump 30.
  • a closed loop duct (supply pipe 120) is branched from a lower portion of the conventional heating water tank 20.
  • the feed pipe 120 is connected to the lower portion of the heating water tank 20 and the outlet port of the heating water tank 20.
  • a three-way valve 110 is installed at a coupling point of the third duct 40c of the heating water tank.
  • the water-cooled evaporator 100 is installed on the feed pipe.
  • the water-cooled evaporator 100 is supplied with the refrigerant which is heat-exchanged by the expansion valve 130, the refrigerant being circulated by the refrigerant pipe 33 branched from the inlet port and the outlet port of the air-cooled evaporator in the refrigerant pipe of the heat pump including the compressor, the condenser, the expander, and the evaporator.
  • the water-cooled evaporator 100 which is one element of the heat pump 30 is supplied with the refrigerant from the heat pump 30 through the refrigerant pipe 33, and lowers the temperature of the heated heating water by the supplied cold refrigerant gas to a given temperature according to the set value.
  • the hot water passes through the water-cooled evaporator comprising the three- wavy valve 110 between the heating water tank 20 and the heat pump 30. Consequently, the circulated hot water is lowered to 4O 0 C, and then is fed into the air-cooled evaporator 32d of the heat pump.
  • the prior art heat pump-type heating apparatus maintains the temperature of the heating water at optimum state in combination with the evaporator of the heat pump 30 and the water-cooled evaporator 100 with lapse of a time after the heating apparatus is operated. Consequently, it can prevent the overload of the heat pump 30 and thus promote the smooth operation of the system.
  • An object of the present invention is to provide a heat pump-type heating apparatus of both air cooling and water cooling which can prevent breakdown and malfunction of the heating apparatus due to sudden and excessive overload of a heat pump at initial start to heat the entire cold heating water remaining in a circulation conduit comprising an indoor heating pipe by only the heat pump in winter, in which a closed loop is formed to firstly heat and circulate a part of the entire heating water, and in which a three-way valve and an electronic valve are installed on both sides of first and second start circuit, and are organically opened and closed according to a set temperature value, thereby preventing the excessive overload at the initial start of the heat pump and gradually mixing the heating water heated by a given temperature with the remaining water in the entire circulation conduit.
  • the present invention provides a heat pump-type heating apparatus of both air cooling and water cooling including a heating pipe for supplying a heating water in a room, a heating water tank supplied with the heating water from the heating pipe, a water-cooled evaporator for lowering the heating water fed from the heating water tank to a set temperature value, a heat pump for heating the water cooled by the water-cooled evaporator and feeding it to the heating pipe, and a plurality of first to fourth ducts for connecting the heating pipe, the heating water tank, the water-cooled evaporator and the heat pump, the heat pump-type heating apparatus: a first start circuit pipe including a check valve at one end of the fourth duct which is connected to the heating pipe and the heat pump, in which a closed circuit is formed by connecting one side of the fourth duct with one side of the third duct through which the cold heating water of initial start flows, and a three-way valve is installed at a coupling point of the third duct 50c to mix the hot
  • the check valve of the first start circuit pipe is provided on the fourth duct to prevent the hot water from flowing back into the heat pump.
  • the three-way valve of the first start circuit pipe is adapted to close the first start circuit pipe if the temperature reaches the set temperature value at the initial start, and then circulate the hot water of the third duct through the water-cooled evaporator.
  • the heat pump-type heating apparatus of both air cooling and water cooling according to the present invention can prevent breakdown and malfunction of the heating apparatus due to sudden and excessive overload of the heat pump at the initial start to heat the entire cold heating water remaining in the circulation conduit comprising the indoor heating pipe by only the heat pump in winter.
  • FIG. 1 is a schematic view illustrating a circulation circuit of the whole heating water according to an embodiment of the present invention
  • Fig. 2 is a schematic view illustrating the flow of a heating water at initial start according to the present invention
  • FIG. 3 is a view illustrating the construction of a heat pump and a water-cooled evaporator according to an embodiment of the present invention.
  • the heating apparatus of the present invention includes a heating pipe 10, a heating water tank 20, a water-cooled evaporator 30, and a heat pump 40, which are connected to each other by first to fourth ducts 50a, 50b, 50c, and
  • First and second start ducts 100 and 200 are installed between the heating water tank 20, the water-cooled evaporator 30 and the heat pump 40.
  • the heating pipe 10 supplies hot water into the heating pipe 10, in which a user lives, to supply heat the interior of the room.
  • the hot water is heated by the heat pump 30, and is circulated from the fourth pipe 50d to the first pipe 50a.
  • the heating water tank 20 is a tank for temporarily storing the heating water supplied from the heating pipe 10, and again supplies the hot water into the heat pump 40 according to the circulated hot water cycle, so that the hot water is reheated therein.
  • the heating water tank 20 includes an inlet pipe 21 at one side of a bottom thereof and a drain pipe 22 at the other side of the bottom.
  • the hot water fed to the drain pipe 22 is previously detected by a temperature sensor 23 at a lower end of the heating water tank 20.
  • the temperature sensor 23 is to control that the apparatus is operated or stopped depending upon the temperature value set in the heating water tank 20. That is, the temperature sensor serves as a starter key.
  • the heat pump 40 is adapted so that condensation and evaporation are adjusted by an inverter 800, and the air-cooled evaporator 42 is communicated with a separate water- cooled evaporator 30.
  • the water-cooled evaporator 30 is supplied with the refrigerant which is heat-exchanged by the expansion valve 45, the refrigerant being circulated by the refrigerant pipe 43 branched from the inlet port and the outlet port of the air-cooled evaporator 42 in the refrigerant pipe 41 of the heat pump 40 including the compressor, the condenser, the expander, and the evaporator, as shown in FIG. 3.
  • the hot water in the second duct 50b passing through the water-cooled evaporator 30 is cooled by the water-cooled evaporator 30 to prevent overload of the apparatus due to the excessive hot water when the hot water is re-circulated into the heat pump 40 by the three-way valve 120.
  • a heating water circulating pump 500 is interposed between the outlet port of the heating pipe 10 of the first duct 50a and the outlet port of the heating water tank 20, and a hot water generating pump 600 is interposed between the outlet port of the three- way valve 120 and the inlet port of the heat pump 40.
  • the heating water circulating pump 500 is adapted to circulate the hot water heated by the heat pump 40 to a set temperature through the heating pipe 10, the first duct 50a, the heating water tank 20, and the waste supply pipe 25, which forms a heating water circulating cycle.
  • the waste heat supply pipe 25 forms the heating water circulating cycle with the heating water circulating pump 500, and is installed on an upper end of the heating water tank 20 to be connected with the fourth duct 50d.
  • the hot water generating pump 600 adjusts a flow rate of the hot water by PID control of the inverter 800, so that the heat pump 40 regulates the condensation of the condenser.
  • the hot water generating pump 600 is disposed between the heating water tank 20 and the heat pump 40, and receives a signal from a temperature sensor installed at the outlet port of the heat pump to adjust the supply amount of the hot water from the hot water generating pump 600, thereby improving the condensation efficiency of the heat pump 40.
  • the hot water generating pump 600 increases the supply amount of the hot water to be fed from the heat pump 40, while if the temperature of the hot water is lower than the set value of the inverter, the hot water generating pump 600 decreases the supply amount of the hot water.
  • the condenser of the heat pump controls the condensation in the PID mode.
  • the water-cooled evaporator 30 is connected to the lower portion of the heating water tank 20 and one side of the second duct 50b for the outlet port of the heating water tank.
  • the refrigerant pipe 43 is connected to the other end of the feed pipe 120 by an expansion valve 130 which is communicated with the air-cooled evaporator 42.
  • the water-cooled evaporator 30 is supplied with the refrigerant which is heat- exchanged by the expansion valve 130, the refrigerant being circulated by the refrigerant pipe 43 branched from the inlet port and the outlet port of the air-cooled evaporator 42 in the refrigerant pipe 41 of the heat pump 40 including the compressor, the condenser, the expander, and the evaporator, as shown in FIG. 3.
  • the hot water in the second duct 50b passing through the water-cooled evaporator 30 is cooled by the water-cooled evaporator 30 to prevent overload of the apparatus due to the excessive hot water when the hot water is re-circulated into the heat pump 40 by the three-way valve 120.
  • the water-cooled evaporator 30 which is one element of the heat pump 40 is supplied with the refrigerant from the heat pump 40 through the expansion valve 130 and the refrigerant pipe 43, and lowers the temperature of the heated heating water by the supplied cold refrigerant gas to a given temperature according to the set value.
  • the hot water passes through the water-cooled evaporator 100 comprising the three- wavy valve 120 between the heating water tank 20 and the heat pump 40. Consequently, the circulated hot water is lowered to 4O 0 C (in the duct 40c), and then is fed into the air-cooled evaporator 32d of the heat pump.
  • the first start circuit pipe 100 includes a check valve 110 at one end of the fourth duct 50d which is connected to the heating pipe 10 and the heat pump 40.
  • the closed circuit is formed by connecting one side of the fourth duct 50d with one side of the third duct 50c through which the cold heating water of initial start flows.
  • the three- way valve 120 is installed at a coupling point of the third duct 50c to mix the hot water with the cold hot water at the set temperature value.
  • the first start circuit pipe 100 is started by a temperature sensor 23 built in the heating water tank 20. After the heating water start to circulate, the hot water circuited by the operation of the hot water generating pump 600 is forcibly fed into the first start circuit pipe 100 to form a closed circuit from the three-way valve 120 through the third duct 50c to the heat pump 40. The closed circuit preheats a part of the whole heating water at the initial start, thereby increasing the temperature of the heating water which is gradually circulated.
  • the start cycle is formed by feeding the heating water through the first start circuit pipe 100, the third duct 50c and the heat pump 40 by the heating water generating pump 600. Consequently, the temperature of the heating water is gradually increased from 1O 0 C to 6O 0 C so that the water is smoothly circulated in the apparatus.
  • a given amount of the heat water is forcibly drawn from the fourth duct 50d among the first to fourth ducts 50a to 50d by the hot water generating pump 600 at the initial start, and is guided through the first start circuit pipe 100 (recycled in a bypass pipe type). Consequently, by preheating not the whole hot water but a part of the hot water at the start of the heat pump, the start efficiency is increased and the overload is prevented in the winter.
  • the three-way valve 120 of the first start circuit pipe closes the first start circuit 100 if it reaches the set temperature value.
  • the three-way valve 120 is installed on the feed pipe 121 of the first start circuit pipe
  • the fourth duct 50d is provided with a check valve 110 of the first start circuit pipe
  • the second start circuit pipe 200 is branched from the first start circuit pipe 100 to guide a part of the cold heating water at the initial start.
  • An electronic valve 210 is installed on one side of the circuit, which is closed if the hot water is higher than the set temperature value and is opened if the hot water is lower than the set temperature value.
  • the electronic valve 210 is connected to one side of the second duct 50b which is connected to the water-cooled evaporator 30 in such a way that the temperature of the heating water is lowered by the water-cooled evaporator 30 when it is fed to the heat pump 40.
  • the electronic valve 210 is closed if the temperature is higher than the set temperature value, for example, 3O 0 C, while the electronic valve 210 is opened if the temperature is lower than the set temperature value. Consequently, opening and closing of the electronic valve is selected depending upon the temperature of the hot water fed from the first start circuit pipe 100 which is supplied to the heat pump 40.
  • the hot water is fed into the water-cooled evaporator 30 to lower the temperature again (e.g., 2O 0 C) only if the set temperature value is less than 3O 0 C.
  • the hot water is mixed with the hot water of the first start circuit pipe 100 by the three-way valve 120, so that the hot water of a proper temperature is fed into the heat pump 40.
  • the hot water which is preheated to the set temperature value by the first and second start circuit pipes 100 and 200 is circulated through the first to fourth ducts 50a to 50d and the heating pipe 10 to gradually heat the whole hot water. This is accomplished by the heating water circulating pump 500 and the hot water generating pump 600 at the first duct 50a or the third duct 50c.
  • the inverter 800 operating the whole the system.
  • the flow rate of the hot water supplied by the hot water generating pump 600 is controlled in the PID control mode by the temperature sensor 810 built in the outlet port of the heat pump 40, thereby adjusting the condensation of the heat pump.
  • the air- cooled evaporator proportionally controls the evaporation by the temperature sensor 820 built in the outlet port of the heat pump.
  • the heat pump-type heating apparatus of both air cooling and water cooling can prevent breakdown and malfunction of the heating apparatus due to sudden and excessive overload of the heat pump at the initial start to heat the entire cold heating water remaining in the circulation conduit comprising the indoor heating pipe by only the heat pump in winter, in which the closed loop is formed to firstly heat and circulate a part of the entire heating water, and in which the three-way valve and the electronic valve are installed on both sides of first and second start circuit, and are organically opened and closed according to the set temperature value, thereby preventing the excessive overload at the initial start of the heat pump and gradually mixing the heating water heated by a given temperature with the remaining water in the entire circulation conduit.

Abstract

A heat pump-type heating apparatus of both air cooling and water cooling is disclosed to prevent breakdown and malfunction of the heating apparatus due to sudden and excessive overload of a heat pump at initial start to heat the entire cold heating water remaining in a circulation conduit comprising an indoor heating pipe by only the heat pump in winter, in which a closed loop is formed to firstly heat and circulate a part of the entire heating water, and in which a three-way valve and an electronic valve are installed on both sides of first and second start circuit, and are organically opened and closed according to a set temperature value, thereby preventing the excessive overload at the initial start of the heat pump and gradually mixing the heating water heated by a given temperature with the remaining water in the entire circulation conduit.

Description

Description
HEAT PUMP-TYPE HEATING APPARATUS OF BOTH AIR COOLING AND WATER COOLING
Technical Field
[1] The present invention relates to a heating apparatus, and more particularly, to a heat pump-type heating apparatus of both air cooling and water cooling which can prevent breakdown and malfunction of the heating apparatus due to sudden and excessive overload of a heat pump at initial start to heat the entire cold heating water remaining in a circulation conduit comprising an indoor heating pipe by only the heat pump in winter, in which a closed loop is formed to firstly heat and circulate a part of the entire heating water, and in which a three-way valve and an electronic valve are installed on both sides of first and second start circuit, and are organically opened and closed according to a set temperature value, thereby preventing the excessive overload at the initial start of the heat pump and gradually mixing the heating water heated by a given temperature with the remaining water in the entire circulation conduit. Background Art
[2] One example of a heat pump-type heating apparatus is disclosed in Korean Patent
Application No. 2005-114593, entitled Heat Pump-type Heating Apparatus, which includes a heating pipe 10, a heating water tank 20, a water-cooled evaporator 100, and a heat pump 30, which are connected to each other by first to fourth ducts 40a, 40b, 40c, and 4Od.
[3] Separate first and second start circuit pipes 100 and 200 are installed in the apparatus, so as to prevent breakdown and malfunction of the heating apparatus due to excessive overload of the heat pump at initial start of the heating apparatus.
[4] In this instance, the separate water-cooled evaporator 100 is installed on the evaporator of the heat pump 30 to increase the thermal efficiency, in addition to an air- cooled hot water heating manner which is obtained from the refrigerant of the heat pump 30.
[5] A closed loop duct (supply pipe 120) is branched from a lower portion of the conventional heating water tank 20. The feed pipe 120 is connected to the lower portion of the heating water tank 20 and the outlet port of the heating water tank 20. A three-way valve 110 is installed at a coupling point of the third duct 40c of the heating water tank. The water-cooled evaporator 100 is installed on the feed pipe.
[6] In this instant, the water-cooled evaporator 100 is supplied with the refrigerant which is heat-exchanged by the expansion valve 130, the refrigerant being circulated by the refrigerant pipe 33 branched from the inlet port and the outlet port of the air-cooled evaporator in the refrigerant pipe of the heat pump including the compressor, the condenser, the expander, and the evaporator.
[7] More specifically, the water-cooled evaporator 100 which is one element of the heat pump 30 is supplied with the refrigerant from the heat pump 30 through the refrigerant pipe 33, and lowers the temperature of the heated heating water by the supplied cold refrigerant gas to a given temperature according to the set value.
[8] For example, in the circulation of the heating water of 6O0C heated by the heat pump
30 which passes the indoor (heating pipe 10) from the fourth duct 4Od and returns to the heat pump 30 through the heating water tank 20, if the heated heating water is fed into the heat pump 30 intact, it may induce the overload of the apparatus. In order to prevent the overload previously, the hot water passes through the water-cooled evaporator comprising the three- wavy valve 110 between the heating water tank 20 and the heat pump 30. Consequently, the circulated hot water is lowered to 4O0C, and then is fed into the air-cooled evaporator 32d of the heat pump.
[9] It is to improve the overload of a conventional heat pump 30 which is driven only by air cooling when an atmosphere temperature is lowered. In particular, the heating water is heat-exchanged by the combination of the air-cooled evaporator and the water- cooled evaporator 100, thereby improving the thermal efficiency of the heat pump.
[10] The prior art heat pump-type heating apparatus maintains the temperature of the heating water at optimum state in combination with the evaporator of the heat pump 30 and the water-cooled evaporator 100 with lapse of a time after the heating apparatus is operated. Consequently, it can prevent the overload of the heat pump 30 and thus promote the smooth operation of the system.
[11] With the prior art heat pump-type heating apparatus, however, much time is required to preheat the whole heating water to a proper temperature by using the heat pump 30 only, and excessive overload happens at the initial heat exchange through the heat pump only, thereby shortening a lifespan of the heat pump 30 and increasing system error.
[12] Some reference numerals mentioned in the above description are quoted from those indicated in the figures illustrating an embodiment of the present invention. Disclosure of Invention Technical Problem
[13] Therefore, the present invention has been made in view of the above-mentioned problems.
[14] An object of the present invention is to provide a heat pump-type heating apparatus of both air cooling and water cooling which can prevent breakdown and malfunction of the heating apparatus due to sudden and excessive overload of a heat pump at initial start to heat the entire cold heating water remaining in a circulation conduit comprising an indoor heating pipe by only the heat pump in winter, in which a closed loop is formed to firstly heat and circulate a part of the entire heating water, and in which a three-way valve and an electronic valve are installed on both sides of first and second start circuit, and are organically opened and closed according to a set temperature value, thereby preventing the excessive overload at the initial start of the heat pump and gradually mixing the heating water heated by a given temperature with the remaining water in the entire circulation conduit. Technical Solution
[15] In order to achieve these and other objects, the present invention provides a heat pump-type heating apparatus of both air cooling and water cooling including a heating pipe for supplying a heating water in a room, a heating water tank supplied with the heating water from the heating pipe, a water-cooled evaporator for lowering the heating water fed from the heating water tank to a set temperature value, a heat pump for heating the water cooled by the water-cooled evaporator and feeding it to the heating pipe, and a plurality of first to fourth ducts for connecting the heating pipe, the heating water tank, the water-cooled evaporator and the heat pump, the heat pump-type heating apparatus: a first start circuit pipe including a check valve at one end of the fourth duct which is connected to the heating pipe and the heat pump, in which a closed circuit is formed by connecting one side of the fourth duct with one side of the third duct through which the cold heating water of initial start flows, and a three-way valve is installed at a coupling point of the third duct 50c to mix the hot water with the cold hot water at the set temperature value; and a second start circuit pipe branched from the first start circuit pipe for guiding a part of the cold heating water at initial start, in which an electronic valve is installed on one side of the second start circuit pipe, which is closed if the hot water is higher than the set temperature value and is opened if the hot water is lower than the set temperature value, and the electronic valve is connected to one side of the second duct which is connected to the water-cooled evaporator in such a way that the temperature of the heating water is lowered by the water-cooled evaporator when it is fed to the heat pump.
[16] The check valve of the first start circuit pipe is provided on the fourth duct to prevent the hot water from flowing back into the heat pump.
[17] The three-way valve of the first start circuit pipe is adapted to close the first start circuit pipe if the temperature reaches the set temperature value at the initial start, and then circulate the hot water of the third duct through the water-cooled evaporator.
Advantageous Effects
[18] The heat pump-type heating apparatus of both air cooling and water cooling according to the present invention can prevent breakdown and malfunction of the heating apparatus due to sudden and excessive overload of the heat pump at the initial start to heat the entire cold heating water remaining in the circulation conduit comprising the indoor heating pipe by only the heat pump in winter.
Brief Description of the Drawings [19] The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which: [20] FIG. 1 is a schematic view illustrating a circulation circuit of the whole heating water according to an embodiment of the present invention; [21] Fig. 2 is a schematic view illustrating the flow of a heating water at initial start according to the present invention; and [22] FIG. 3 is a view illustrating the construction of a heat pump and a water-cooled evaporator according to an embodiment of the present invention.
Best Mode for Carrying Out the Invention [23] Reference will now be made in detail to the preferred embodiments of the present invention. It is to be understood that the following examples are illustrative only and the present invention is not limited thereto. [24] Referring to FIGs. 1 to 3, the heating apparatus of the present invention includes a heating pipe 10, a heating water tank 20, a water-cooled evaporator 30, and a heat pump 40, which are connected to each other by first to fourth ducts 50a, 50b, 50c, and
50d. First and second start ducts 100 and 200 are installed between the heating water tank 20, the water-cooled evaporator 30 and the heat pump 40. [25] The heating pipe 10 supplies hot water into the heating pipe 10, in which a user lives, to supply heat the interior of the room. The hot water is heated by the heat pump 30, and is circulated from the fourth pipe 50d to the first pipe 50a. [26] In this instance, the heating water tank 20 is a tank for temporarily storing the heating water supplied from the heating pipe 10, and again supplies the hot water into the heat pump 40 according to the circulated hot water cycle, so that the hot water is reheated therein. [27] The heating water tank 20 includes an inlet pipe 21 at one side of a bottom thereof and a drain pipe 22 at the other side of the bottom. Preferably, the hot water fed to the drain pipe 22 is previously detected by a temperature sensor 23 at a lower end of the heating water tank 20. [28] The temperature sensor 23 is to control that the apparatus is operated or stopped depending upon the temperature value set in the heating water tank 20. That is, the temperature sensor serves as a starter key. [29] The heat pump 40 is adapted so that condensation and evaporation are adjusted by an inverter 800, and the air-cooled evaporator 42 is communicated with a separate water- cooled evaporator 30.
[30] In this instant, the water-cooled evaporator 30 is supplied with the refrigerant which is heat-exchanged by the expansion valve 45, the refrigerant being circulated by the refrigerant pipe 43 branched from the inlet port and the outlet port of the air-cooled evaporator 42 in the refrigerant pipe 41 of the heat pump 40 including the compressor, the condenser, the expander, and the evaporator, as shown in FIG. 3. The hot water in the second duct 50b passing through the water-cooled evaporator 30 is cooled by the water-cooled evaporator 30 to prevent overload of the apparatus due to the excessive hot water when the hot water is re-circulated into the heat pump 40 by the three-way valve 120.
[31] A heating water circulating pump 500 is interposed between the outlet port of the heating pipe 10 of the first duct 50a and the outlet port of the heating water tank 20, and a hot water generating pump 600 is interposed between the outlet port of the three- way valve 120 and the inlet port of the heat pump 40.
[32] In this instance, the heating water circulating pump 500 is adapted to circulate the hot water heated by the heat pump 40 to a set temperature through the heating pipe 10, the first duct 50a, the heating water tank 20, and the waste supply pipe 25, which forms a heating water circulating cycle.
[33] The waste heat supply pipe 25 forms the heating water circulating cycle with the heating water circulating pump 500, and is installed on an upper end of the heating water tank 20 to be connected with the fourth duct 50d.
[34] The hot water generating pump 600 adjusts a flow rate of the hot water by PID control of the inverter 800, so that the heat pump 40 regulates the condensation of the condenser. The hot water generating pump 600 is disposed between the heating water tank 20 and the heat pump 40, and receives a signal from a temperature sensor installed at the outlet port of the heat pump to adjust the supply amount of the hot water from the hot water generating pump 600, thereby improving the condensation efficiency of the heat pump 40.
[35] That is, if the temperature of the hot water is higher than the set value of the inverter, the hot water generating pump 600 increases the supply amount of the hot water to be fed from the heat pump 40, while if the temperature of the hot water is lower than the set value of the inverter, the hot water generating pump 600 decreases the supply amount of the hot water. Thus, the condenser of the heat pump controls the condensation in the PID mode.
[36] The water-cooled evaporator 30 is connected to the lower portion of the heating water tank 20 and one side of the second duct 50b for the outlet port of the heating water tank. The refrigerant pipe 43 is connected to the other end of the feed pipe 120 by an expansion valve 130 which is communicated with the air-cooled evaporator 42.
[37] The water-cooled evaporator 30 is supplied with the refrigerant which is heat- exchanged by the expansion valve 130, the refrigerant being circulated by the refrigerant pipe 43 branched from the inlet port and the outlet port of the air-cooled evaporator 42 in the refrigerant pipe 41 of the heat pump 40 including the compressor, the condenser, the expander, and the evaporator, as shown in FIG. 3. The hot water in the second duct 50b passing through the water-cooled evaporator 30 is cooled by the water-cooled evaporator 30 to prevent overload of the apparatus due to the excessive hot water when the hot water is re-circulated into the heat pump 40 by the three-way valve 120.
[38] More specifically, the water-cooled evaporator 30 which is one element of the heat pump 40 is supplied with the refrigerant from the heat pump 40 through the expansion valve 130 and the refrigerant pipe 43, and lowers the temperature of the heated heating water by the supplied cold refrigerant gas to a given temperature according to the set value.
[39] For example, in the circulation of the heating water of 6O0C heated by the heat pump
40 which passes the indoor (heating pipe 10) from the fourth duct 50d and returns to the heat pump 40 through the heating water tank 20, if the heated heating water is fed into the heat pump 40 intact, it may induce the overload of the apparatus. In order to prevent the overload previously, the hot water passes through the water-cooled evaporator 100 comprising the three- wavy valve 120 between the heating water tank 20 and the heat pump 40. Consequently, the circulated hot water is lowered to 4O0C (in the duct 40c), and then is fed into the air-cooled evaporator 32d of the heat pump.
[40] It is to improve the overload of a conventional heat pump 40 which is driven only by air cooling according to the atmosphere temperature. In particular, the heating water is heat-exchanged by the combination of the air-cooled evaporator 42 and the water- cooled evaporator 30, thereby improving the thermal efficiency of the heat pump.
[41] The first start circuit pipe 100 includes a check valve 110 at one end of the fourth duct 50d which is connected to the heating pipe 10 and the heat pump 40. The closed circuit is formed by connecting one side of the fourth duct 50d with one side of the third duct 50c through which the cold heating water of initial start flows. The three- way valve 120 is installed at a coupling point of the third duct 50c to mix the hot water with the cold hot water at the set temperature value.
[42] The first start circuit pipe 100 is started by a temperature sensor 23 built in the heating water tank 20. After the heating water start to circulate, the hot water circuited by the operation of the hot water generating pump 600 is forcibly fed into the first start circuit pipe 100 to form a closed circuit from the three-way valve 120 through the third duct 50c to the heat pump 40. The closed circuit preheats a part of the whole heating water at the initial start, thereby increasing the temperature of the heating water which is gradually circulated.
[43] More specifically, the start cycle is formed by feeding the heating water through the first start circuit pipe 100, the third duct 50c and the heat pump 40 by the heating water generating pump 600. Consequently, the temperature of the heating water is gradually increased from 1O0C to 6O0C so that the water is smoothly circulated in the apparatus.
[44] A given amount of the heat water is forcibly drawn from the fourth duct 50d among the first to fourth ducts 50a to 50d by the hot water generating pump 600 at the initial start, and is guided through the first start circuit pipe 100 (recycled in a bypass pipe type). Consequently, by preheating not the whole hot water but a part of the hot water at the start of the heat pump, the start efficiency is increased and the overload is prevented in the winter.
[45] In this instance, the three-way valve 120 of the first start circuit pipe closes the first start circuit 100 if it reaches the set temperature value.
[46] The three-way valve 120 is installed on the feed pipe 121 of the first start circuit pipe
100 and the third duct 50c passing through the heat pump 40, and is adapted to mix the hot water of the first start circuit pipe 100 and the hot water of the third duct 50c according to the set temperature value.
[47] The fourth duct 50d is provided with a check valve 110 of the first start circuit pipe
100 to prevent the hot water from flowing back into the heat pump 40.
[48] The second start circuit pipe 200 is branched from the first start circuit pipe 100 to guide a part of the cold heating water at the initial start. An electronic valve 210 is installed on one side of the circuit, which is closed if the hot water is higher than the set temperature value and is opened if the hot water is lower than the set temperature value. The electronic valve 210 is connected to one side of the second duct 50b which is connected to the water-cooled evaporator 30 in such a way that the temperature of the heating water is lowered by the water-cooled evaporator 30 when it is fed to the heat pump 40.
[49] In this instance, the electronic valve 210 is closed if the temperature is higher than the set temperature value, for example, 3O0C, while the electronic valve 210 is opened if the temperature is lower than the set temperature value. Consequently, opening and closing of the electronic valve is selected depending upon the temperature of the hot water fed from the first start circuit pipe 100 which is supplied to the heat pump 40.
[50] It is to prevent the overload of the heat pump 40 at the initial start, so as to interrupt the inflow of the overheated hot water into the heat pump 40.
[51] That is, the hot water is fed into the water-cooled evaporator 30 to lower the temperature again (e.g., 2O0C) only if the set temperature value is less than 3O0C. The hot water is mixed with the hot water of the first start circuit pipe 100 by the three-way valve 120, so that the hot water of a proper temperature is fed into the heat pump 40.
[52] The hot water which is preheated to the set temperature value by the first and second start circuit pipes 100 and 200 is circulated through the first to fourth ducts 50a to 50d and the heating pipe 10 to gradually heat the whole hot water. This is accomplished by the heating water circulating pump 500 and the hot water generating pump 600 at the first duct 50a or the third duct 50c.
[53] The air-cooled evaporator 42 of the heat pump and the hot water generating pump
600 of the third duct are controlled by the inverter 800 operating the whole the system. The flow rate of the hot water supplied by the hot water generating pump 600 is controlled in the PID control mode by the temperature sensor 810 built in the outlet port of the heat pump 40, thereby adjusting the condensation of the heat pump. The air- cooled evaporator proportionally controls the evaporation by the temperature sensor 820 built in the outlet port of the heat pump.
[54] While this invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiment and the drawings. On the contrary, it is intended to cover various modifications and variations within the spirit and scope of the appended claims. Industrial Applicability
[55] As can be seen from the foregoing, the heat pump-type heating apparatus of both air cooling and water cooling according to the present invention can prevent breakdown and malfunction of the heating apparatus due to sudden and excessive overload of the heat pump at the initial start to heat the entire cold heating water remaining in the circulation conduit comprising the indoor heating pipe by only the heat pump in winter, in which the closed loop is formed to firstly heat and circulate a part of the entire heating water, and in which the three-way valve and the electronic valve are installed on both sides of first and second start circuit, and are organically opened and closed according to the set temperature value, thereby preventing the excessive overload at the initial start of the heat pump and gradually mixing the heating water heated by a given temperature with the remaining water in the entire circulation conduit.
[56]

Claims

Claims
[1] A heat pump-type heating apparatus of both air cooling and water cooling including a heating pipe 10 for supplying a heating water in a room, a heating water tank 20 supplied with the heating water from the heating pipe 10, a water- cooled evaporator 30 for lowering the heating water fed from the heating water tank 20 to a set temperature value, a heat pump 40 for heating the water cooled by the water-cooled evaporator 30 and feeding it to the heating pipe 10, and a plurality of first to fourth ducts 50a, 50b, 50c and 50d for connecting the heating pipe 10, the heating water tank 20, the water-cooled evaporator 30 and the heat pump 40, the heat pump-type heating apparatus: a first start circuit pipe 100 including a check valve 110 at one end of the fourth duct 50d which is connected to the heating pipe 10 and the heat pump 40, in which a closed circuit is formed by connecting one side of the fourth duct 50d with one side of the third duct 50c through which the cold heating water of initial start flows, and a three-way valve 120 is installed at a coupling point of the third duct 50c to mix the hot water with the cold hot water at the set temperature value; and a second start circuit pipe 200 branched from the first start circuit pipe 100 for guiding a part of the cold heating water at initial start, in which an electronic valve 210 is installed on one side of the second start circuit pipe, which is closed if the hot water is higher than the set temperature value and is opened if the hot water is lower than the set temperature value, and the electronic valve 210 is connected to one side of the second duct 50b which is connected to the water- cooled evaporator 30 in such a way that the temperature of the heating water is lowered by the water-cooled evaporator 30 when it is fed to the heat pump 40.
[2] The heat pump-type heating apparatus as claimed in claim 1, wherein the check valve 700 of the first start circuit pipe 100 is provided on the fourth duct 50d to prevent the hot water from flowing back into the heat pump 40.
[3] The heat pump-type heating apparatus as claimed in claim 1 or 2, wherein the three-way valve 120 of the first start circuit pipe is adapted to close the first start circuit pipe 100 if the temperature reaches the set temperature value at the initial start, and then circulate the hot water of the third duct 50c through the water- cooled evaporator 30.
PCT/KR2007/003505 2006-08-21 2007-07-20 Heat pump-type heating apparatus of both air cooling and water cooling WO2008023889A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20060078621 2006-08-21
KR10-2006-0078621 2006-08-21
KR10-2006-0118154 2006-11-28
KR1020060118154A KR100695975B1 (en) 2006-08-21 2006-11-28 Heat-pump type heating apparatus used as gas and water

Publications (1)

Publication Number Publication Date
WO2008023889A1 true WO2008023889A1 (en) 2008-02-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2007/003505 WO2008023889A1 (en) 2006-08-21 2007-07-20 Heat pump-type heating apparatus of both air cooling and water cooling

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WO (1) WO2008023889A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113959190A (en) * 2021-10-15 2022-01-21 青岛海尔空调电子有限公司 Method and device for controlling heat pump dryer, electronic equipment and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5765547A (en) * 1980-10-08 1982-04-21 Mitsubishi Electric Corp Hot water feeder
KR20030023531A (en) * 2001-09-13 2003-03-19 산요 덴키 가부시키가이샤 Heat Pump Type Hot Water Supply Apparatus
JP2004108597A (en) * 2002-09-13 2004-04-08 Mitsubishi Electric Corp Heat pump system
KR100556200B1 (en) * 2005-11-29 2006-03-03 (주)유일멀티하이테크 Heat pump type hot water supply combined use air and water refrirant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5765547A (en) * 1980-10-08 1982-04-21 Mitsubishi Electric Corp Hot water feeder
KR20030023531A (en) * 2001-09-13 2003-03-19 산요 덴키 가부시키가이샤 Heat Pump Type Hot Water Supply Apparatus
JP2004108597A (en) * 2002-09-13 2004-04-08 Mitsubishi Electric Corp Heat pump system
KR100556200B1 (en) * 2005-11-29 2006-03-03 (주)유일멀티하이테크 Heat pump type hot water supply combined use air and water refrirant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113959190A (en) * 2021-10-15 2022-01-21 青岛海尔空调电子有限公司 Method and device for controlling heat pump dryer, electronic equipment and storage medium
CN113959190B (en) * 2021-10-15 2023-02-28 青岛海尔空调电子有限公司 Method and device for controlling heat pump dryer, electronic apparatus, and storage medium

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