KR20100102863A - Heat pump system - Google Patents

Heat pump system Download PDF

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Publication number
KR20100102863A
KR20100102863A KR1020090021145A KR20090021145A KR20100102863A KR 20100102863 A KR20100102863 A KR 20100102863A KR 1020090021145 A KR1020090021145 A KR 1020090021145A KR 20090021145 A KR20090021145 A KR 20090021145A KR 20100102863 A KR20100102863 A KR 20100102863A
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KR
South Korea
Prior art keywords
hot water
heat
heat exchanger
indoor
temperature
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Application number
KR1020090021145A
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Korean (ko)
Inventor
백현정
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백현정
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Priority to KR1020090021145A priority Critical patent/KR20100102863A/en
Publication of KR20100102863A publication Critical patent/KR20100102863A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/02Heat pumps of the compression type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07Details of compressors or related parts
    • F25B2400/075Details of compressors or related parts with parallel compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19Pressures
    • F25B2700/195Pressures of the condenser
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • F25B2700/2116Temperatures of a condenser
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency

Abstract

PURPOSE: A heat pump system is provided to implement hot water supply and cooling simultaneously in the summer season and hot water supply, heating, and hot air supply simultaneously in the winter season. CONSTITUTION: A heat pump system comprises an outdoor unit system(300), an indoor unit system(400), and a regenerator system(500). The outdoor unit system comprises compressors(1,2), a control valve(30), a four-way valve(5), an outdoor unit, expansion valves(20,21,22,23), a main control unit. The compressors compress refrigerant gas to high pressure and high temperature. The expansion valves expand the liquid coolant of high pressure and high temperature condensed by the condenser to the liquid coolant of low pressure. The four-way valve switches between cooling and heating. The indoor unit system comprises indoor units(50,51,52,53,54,55), expansion valves(24,25,26), and an indoor controller. The regenerator system comprises a hot water heat exchanger(40), a heating water heat exchanger(41), water tanks(7,8), and a water controller and stores hot water and heating water.

Description

Heat Pump System {HEAT PUMP SYSTEM}

The present invention relates to a multi-heat pump system, the purpose of which is to supply hot water and cooling at the same time in the summer, and to the energy-saving multi-heat pump system for supplying hot water, heating hot water and hot air at the same time in winter, refrigeration cycle in the summer By using the waste heat of the heavy condenser as a hot water heating heat source, hot water can be supplied without additional energy supply.In winter, the heat exchanger (40, 41) and the indoor unit are used as condensers to simultaneously supply hot water, warm water and warm air. It is to be able to supply.

Conventional heat pump systems include the following.

<Example 1>

 FIG. 7 is a heat and cooling heat pump system composed of a compressor 1, a condenser 3, an expansion valve 20, an evaporator 50, and a four-sided valve 5. ), Condenser (3), expansion valve (20), evaporator (50) and compressor (1) is operated, in the case of heating, compressor (1), four sides (5), evaporator (3), expansion valve (4), It is the most commonly sold cold and heating heat pump system driven by the condenser 50 and the compressor (1).

However, in the conventional cycle, the energy efficiency is low by heat-exchanging the heat of condensation of the compressor 1 from the condenser 3 to the atmosphere during the summer in the cycle, and the condensation pressure rises excessively when the outside air temperature rises. There is a risk of an increase in the operating power of the compressor (1) and burnout, and additionally, a hot water heater must be additionally installed, and only hot air is supplied to the winter season, and thus hot water for hot water and floor heating must be additionally operated.

    <Example 2>

 FIG. 8 is a heat and cooling heat pump system composed of a compressor 1, a condenser 3, an expansion valve 20, an evaporator 50 for water, and a four-sided valve 5. 5), it operates as a condenser (3), expansion valve 20, water evaporator (50) and compressor (1), in the case of egg heating, compressor (1), four sides (5), water evaporator (50), expansion valve ( 20), the most commonly sold heat pump system for cold and hot water operated by condenser (3) and compressor (1).

However, in the conventional cycle, the energy efficiency is low by heat-exchanging the heat of condensation of the compressor 1 from the condenser 3 to the atmosphere during the summer in the cycle, and the condensation pressure rises excessively when the outside air temperature rises. There is a risk of an increase in the operating power of the compressor (1) and burnout due to, and additionally, a hot water heater must be additionally installed, and since only hot water is supplied to the winter season, a hot water boiler must be additionally operated.

The present invention is to provide a hot water supply and cooling at the same time by using a multi-heat pump system at the same time, to provide an energy-saving multi-heat pump system for supplying hot water, heating hot water and hot air at the same time in winter.

The present invention is to supply hot water and cooling at the same time in summer, the hot water supply heat exchanger, hot water tank, hot water heat exchanger, and hot water tank to the existing multi-heat pump system to supply hot water, heating hot water and hot air at the same time in winter Heat storage of hot water and hot water at high temperature, the operation in two stages of condensation in the summer, and the three-phase condensation of hot water, heating hot water and indoor unit in the winter season.

The present invention is an application of a multi-heat pump system, the purpose of which is to supply hot water and cooling at the same time in the summer, and to the energy-saving system for supplying hot water, heating hot water and hot air at the same time in winter, condenser during the refrigeration cycle in the summer It can supply hot water supply without additional energy by using waste heat of hot water supply for heating water supply. In winter, it can supply hot water, warm water and warm air by using heat exchanger and indoor unit as condenser. The best residential space can be created by supplying hot air from indoor heating (condenser) and ondol heating, which are the characteristics of homes.

The multi-system of the present invention is a dual structure used by attaching the expansion side of the indoor unit to the outdoor unit and the indoor unit, respectively, and can be selectively applied according to the structure of the building, thereby simplifying installation and maintenance.

In addition, many problems occurred during floor heating due to the low outflow temperature of the heat pump, but by overcoming them with floor heating + warm air heating, it overcomes the limitation of hot air heating, which is a disadvantage of cold and heater, in winter Pioneering a new energy source as a heating heat source, and also has the effect of suppressing the generation of global warming gas CO2, and the high-temperature and high-pressure compressed refrigerant gas at the outlet of the compressor is condensed sequentially in the hot water heat exchanger hot water heat exchanger and condenser. By increasing the heat transfer area of the machine, the heating heat is increased by high-efficiency heat exchange, and the power consumption of the compressor is reduced by lowering the condensation pressure, and the compressor can be prevented from being burned out due to overload.

In order to achieve the above object, the multi-heat pump system according to the present invention, a compressor for compressing and discharging the refrigerant gas at a high temperature and high pressure state, a condenser for condensing the refrigerant compressed by the compressor in the liquid phase, condensing in the condenser The expansion valve for expanding the high temperature and high pressure liquid refrigerant to the low pressure liquid refrigerant, and by using the latent heat of evaporation of the refrigerant evaporated from the expansion valve to achieve the freezing effect by heat exchange with the object to be cooled In a multi-heat pump system comprising an evaporator for evaporating and returning a refrigerant gas of low temperature and low pressure to a compressor, and four sides for switching between cooling and heating,

The outdoor unit system 300 which consists of the said compressor 1, 2, the control side 30, the four-sided side 5, the outdoor unit 3, the expansion side 20, the expansion side 21, 22, 23, and the main controller 80. );

An indoor unit system 400 including the indoor units 50, 51, 52, 53, 54, 55, expansion valves 24, 25, 26, and indoor controllers 82, 83, 84, 85, 86, 87;

The hot water heat exchanger 40, the heating hot water heat exchanger 41, the water tanks (7, 8) and the water control device 81 to the heat storage and storage of the hot water and heating hot water, heat that is selectively operated when necessary A storage system 500 is featured.

The features and advantages of the present invention will become more apparent from the detailed description of the preferred embodiments based on the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors may properly interpret the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Hereinafter, an embodiment of a heat pump according to the present invention will be described with reference to the accompanying drawings.

1 is a cycle diagram showing a schematic diagram of a heat pump system according to the present invention.

Reference numerals 1 and 2 refer to compressors, which are used to suck refrigerant gas and compress and discharge it at high temperature and high pressure. The reciprocating type, crank type, swash plate type, wobble plate type, rotary type, scroll type, etc. are used depending on the purpose of use. Various types of compressors can be applied.

The discharge lines of the compressors 1 and 2 are connected to the four sides via the hot water heat exchanger 40 and the hot water heat exchanger 41, and the control valve 30 exchanges heat at the outlet of the compressor 1. The sides 40 and 41 are connected in parallel to the four sides, the four sides 5 is connected to the outdoor unit (3).

The hot water heat exchanger 40, the hot water heat exchanger 41, and the outdoor unit 3 are condensers during the cooling operation to condense into a liquid refrigerant of high temperature and high pressure by radiating the refrigerant gas discharged from the compressors 1 and 2 to discharge. It is. Although not shown in detail, the condenser is an air heat exchanger, and a plurality of tubes forming a predetermined flow path by connecting the inlet header and the outlet header and the inlet / outlet headers to communicate with each other, and between the tubes. Conventional forms with corrugated heating fins laminated to can be applied. Therefore, the air blown by the cooling fan passes through the heat transfer fins between the tubes, and in this process, the refrigerant flowing in the condenser is deprived of heat to the blown air to perform the condensation of the refrigerant.

In addition, when the condenser is a water heat exchanger in the form of a plate heat exchanger, a cell-and-tube heat exchanger, a spiral tube and a double tube heat exchanger, the heat is deprived of the heat in the water inside the heat exchanger, the heat is deprived, and the condensation of the refrigerant is performed.

On the other hand, the latent heat of evaporation at the inlet line side of the compressors 1 and 2 is evaporated by evaporating the refrigerant flowing from the expansion valves 21, 22, 23, 24, 25, and 26 to 21 → 26. Several indoor units (hereinafter referred to as 50 → 55) are connected to 50, 51, 52, 53, 54, and 55 to achieve the refrigeration effect by exchanging the object to be cooled with the refrigerant. The indoor unit (50 → 55, evaporator) includes a plurality of tubes forming a predetermined flow path by connecting an inlet header and an outlet header and the inlet / outlet headers so as to communicate with each other, and a corgate stacked between the tubes. The usual type with the heat transfer fins can be applied. Therefore, the air blown by the cooling fan passes through the heat transfer fins between the tubes, and in this process, the refrigerant flowing in the evaporator deprives the temperature (calories) of the blowing air to perform the evaporation of the refrigerant.

At the inlet end of the evaporator (50 → 55, indoor unit), the liquid refrigerant in the high temperature and high pressure state is supplied to the evaporator (50 → 55, indoor unit) so that the evaporation is easily performed by expanding the liquid refrigerant in the low pressure state by throttling. Expansion valves 21 to 26 are provided. Although not shown in detail here, the expansion valve 21 → 26 is an internal equalization type or capillary which controls the trajectory of the high-pressure refrigerant flow path through the pressure transfer rod by the expansion displacement of the diaphragm according to the temperature inside the temperature reduction chamber. Thermostatic expansion valves, such as TEV, capillary type, and electronic expansion valves, which are generally externally pressured to control the trajectory of the high-pressure refrigerant flow path by the expansion displacement of the diaphragm through the tube, can be used in various forms.

Hereinafter, an embodiment of a multi heat pump according to the present invention will be described with reference to the accompanying drawings.

In FIG. 1, the flow of the refrigerant is compressed into a refrigerant gas of a high temperature and high pressure in the compressors 1 and 2, and condensed into a liquid phase in the gas phase in a heat exchanger 40, 41, and a condenser. After the heat exchange, the gas phase is converted to the liquid phase, and the pressure is reduced by passing through the expansion valve (21 → 26), passing through the evaporator (50 → 55), and passing through the four sides (4) to the suction parts of the compressors (1, 2). 2) the control valve 30 is on the pipe bypassed to the four sides (5) without passing through the heat exchanger (40, 41), the outlet of the outdoor unit (3) is a structure connected to the expansion valve (21 → 26). .

In addition, the expansion valve (21, 22, 23) is attached to the outdoor unit system 300 is operated by the main controller 80, the expansion valve (24, 25, 26) is attached to the indoor unit (53, 54, 55) It is operated by indoor unit controllers 85, 86 and 87, and compressors 1 and 2 are two or three connected in parallel in a multi-heat pump system. Depending on the type, it can be operated simultaneously or alone.

And the indoor units (50, 51, 52, 53, 53, 54, 55) in Figure 1 is shown randomly 6 in this specification, in the actual product 2 or 3 or 10 or 20 various forms The quantity of indoor unit is determined by the capacity of multi heat pump.

In addition, the indoor units 50, 51, and 52 having the expansion valves 21, 22, and 23 attached to the outdoor unit system 300 may be manufactured in a combination of all, some, or no structures of the entire indoor units 50 → 55. This may be a matter of manufacturing, it is shown that Figure 1 of the present specification is merely a schematic structure.

Referring to the operation of the present invention, when the hot water heat exchanger (40, condenser), the hot water heat exchanger (41, condenser) and the outdoor unit (3) according to the combination type of operation, 1) summer hot water supply and cooling mode, 2) winter Hot water supply, hot water and hot air mode, 3) can be classified into winter hot air mode.

First, the hot water supply and cooling (cold wind) mode of the summer season is to cool the refrigerant gas of the high temperature and high pressure of the compressor (1, 2)

In the hot water supply heat exchanger 40 and the hot water heat exchanger 41, after the heat exchange with the water in the heat exchanger 40, 41 in the gas state, it is condensed with the refrigerant in the liquid state and passes through the four sides (5, a → b). (3, condenser) is drawn in.

The state of the refrigerant introduced into the outdoor unit 3 (condenser) is a liquid state, a gas state, and a partial gas state, and after the heat exchange with the outdoor air, the refrigerant is condensed and supercooled into a liquid state refrigerant, and the high pressure liquid refrigerant at the outlet of the outdoor unit 3 is After decompression through the expansion valve (21 → 26), it is exchanged with the indoor air in the indoor unit (50 → 55, evaporator), and then converted from the liquid phase to the gas phase, and then passes through the four sides (5, d → c) to the compressor (1, 2). Inhaled.

At this time, the hot water supply heat exchanger (40) and the hot water heat exchanger (41) has a structure of heat exchange with the high temperature and high pressure compressed refrigerant gas at the outlet of the compressor (1, 2), inside the hot water tank (7) and the hot water tank (8) As a mounted structure, a separate hot water supply heat source (boiler) is not required, and the hot water tank 8 is a structure in which the hot water tank 8 switches to an auxiliary hot water tank in summer, and is a high-temperature, high-pressure compressed refrigerant gas at the outlet of the compressors 1 and 2. Since condensation is sequentially performed in the hot water supply heat exchanger 40, the hot water heat exchanger 41, and the outdoor unit 3, the condenser, the condensation pressure is lowered when the outdoor air temperature rises in summer, thereby reducing the power consumption of the compressor (1, 2). It is possible to prevent the damage of the compressor due to the overload.

The control logic of this mode is explained by the operation of the main controller 80, the male control apparatus 81, and the indoor control apparatus 82, 83, 84, 85, 86, 87 and hereinafter referred to as 82 → 87 in FIG. The water control device 81 receives the temperature of the temperature sensors 61 and 62 and requests the opening of the control valve 30 of the outdoor unit system 300 when the water control device 81 is above the set value of the water control device 81. To the main controller 80, and the values of the condensation temperature sensor 60 and the condensation pressure sensor 70 are transmitted to the main controller 80.

The indoor control devices 82 → 87 are attached to the indoor units 50 → 55 or stand-alone, respectively, and are set by the indoor user's driving signal (On) and the indoor temperature set by the indoor user and the indoor temperature sensors 63, 64. , 65, 66, 67, 68) If the temperature is greater than the set value, the indoor unit (51 → 56) is instructed to operate the indoor unit fan motors (91, 92, 93, 94, 95, 96 or below 91 → 96). The interior control device (85, 86, 87) controls the expansion valve (24, 25, 26), the indoor control devices (82, 83, 84) are the expansion valve (21, 22, 23) without controlling, and transmits the operation of the indoor unit (51 → 56) to the main controller 80, and stops the indoor unit below the set value.

At this time, one or a part or all of the indoor units 51 → 55 are driven by the temperature set value and the operation signal of the user in each room.

The main control unit 80 is operated by the operation request signals of the indoor control unit 82 → 87 and the water control unit 81, and if there is an operation request, the operation request number of the indoor control unit 82 → 87 (indoor) Corresponding to the cooling load), direct or parallel operation of the compressors 1 and 2 is instructed, the four sides 5 and the control valve 30 are controlled, and the condensation temperature sensor 60 and the water control device 81 are controlled. The outdoor unit fan motor 90 is controlled by receiving the value of the condensation pressure sensor 70 and comparing with the set value inside the main controller 80, and the expansion valves 21, 22, and 23 are controlled by the respective indoor control devices 82,. 83, 84) when the operation request.

Next, in the hot water supply, hot water and hot air modes of the winter season, the hot and high-pressure refrigerant gases of the compressors 1 and 2 are supplied from the hot water heat exchanger 40 and the hot water heat exchanger 41 in a gaseous state. After the heat exchange with the water inside the condensed into the refrigerant in the liquid state through the four sides (5, a → d) is introduced into the indoor unit (50 → 55, condenser).

The state of the refrigerant introduced into the indoor unit (50 → 55, condenser) is a liquid state, gaseous state, and partial gas state, and after the heat exchange with the air in the room, condensation and supercooling with the refrigerant in the liquid state, the outlet of the indoor unit (50 → 55, condenser) The high pressure refrigerant of the refrigerant is decompressed while passing through the expansion valve (20), and after being exchanged with outdoor air in the outdoor unit (3, evaporator), converts from the liquid phase to the gas phase and passes through the four sides (5, b → c) to the compressor (1, 2). Inhaled.

At this time, the hot water supply heat exchanger (40) and the hot water heat exchanger (41) has a structure of heat exchange with the high temperature and high pressure compressed refrigerant gas at the outlet of the compressor (1, 2), inside the hot water tank (7) and the hot water tank (8) As a built-in structure, a separate hot water supply source (boiler) is not needed, and the hot water tank (8) is supplied as a heat source of a floor heating or a heating device in winter, so that the ondol heating and indoor unit (50 → 55), which is a characteristic of a Korean house, are provided. , Condenser) can create the best living space.

In addition, many problems occurred during floor heating due to the low outflow temperature of the heat pump, but by overcoming them with floor heating + warm air heating, it overcomes the limitation of hot air heating, which is a disadvantage of cold and heater, in winter It is to pioneer new energy sources as heating heat sources, and has the effect of suppressing the generation of global warming gas CO2.

In addition, since the high temperature and high pressure compressed refrigerant gas at the outlet of the compressors 1 and 2 is condensed sequentially in the hot water supply heat exchanger 40, the hot water heat exchanger 41 and the indoor unit (50 → 55, condenser), By increasing the heat transfer area, heating heat can be increased by high-efficiency heat exchange, reducing the power consumption of the compressors (1, 2) by lowering the condensation pressure (as described in Fig. 4), and preventing the damage of the compressor due to overload. Can be.

In addition, the refrigerant introduced into the outdoor unit (3, evaporator) is supercooled (see Fig. 4) to increase the freezing effect.

In this mode, the control logic in FIG. 3 receives the pressure and temperature of the condensation pressure sensor 70 and the condensation temperature sensor 60 in FIG. A request for opening the control valve 30 of the outdoor unit system 300 is made to the main controller 80, and the values of the condensation temperature sensor 60 and the condensation pressure sensor 70 are transmitted to the main controller 80. .

The indoor control unit 82 → 87 compares the set indoor temperature of the indoor user with the temperature of the indoor temperature sensors 63, 64, 65, 66, 67, and 68 according to the driving signal (On) of each indoor user. If less, the indoor unit (50 → 55) is instructed to operate the indoor indoor fan motor (91 → 96) (On), the indoor control device (85, 86, 87) is the expansion valve (24, 25, 26, the indoor control devices (82, 83, 84) do not control the expansion valve (21, 22, 23), and transmits the operation of the indoor unit (50 → 55) to the main controller 80, the set value In the above, the indoor unit is stopped.

At this time, the indoor unit (50 → 55) is one or a part or all of the type is driven by the temperature set value and the operation signal of the user of each room.

The main control unit 80 is operated by the operation request signals of the indoor control unit 82 → 87 and the water control unit 81, and if there is an operation request, the operation request number of the indoor control unit 82 → 87 (indoor heating) Corresponding to the load), direct or parallel operation of the compressors 1, 2 is instructed, the four sides 5, the control valve 30 and the expansion valve 20 are controlled, and the expansion valves 21, 22, 23 are respectively The indoor control device (82, 83, 84) of the driving request is controlled.

 Operation Description 3) In the warm air mode of the winter season, the refrigerant gas of the high temperature and high pressure of the compressors 1 and 2 enters the indoor unit 50 → 55 (condenser) via the control valve 30 and the four sides (5, a → d). .

The refrigerant introduced into the indoor unit (50 → 55, condenser) is a gaseous state and condensed into a refrigerant in a liquid state after heat exchange with the indoor air, and the refrigerant at the outlet of the indoor unit (50 → 55, condenser) passes through the expansion valve (20). After the pressure is reduced, the outdoor unit (3, evaporator) is exchanged with the outdoor air, and then converted into the gas phase from the liquid phase, and is sucked into the compressors (1, 2) through the four sides (5, b → c).

In this mode, since the hot water supply heat exchanger 40 and the hot water heat exchanger 41 do not exchange heat with the refrigerant gas, the hot water supply and hot water heating are not used, and the control valve 30 is operated in an open state. It is the same type as the existing cold and hot air multi heat pump.

The control logic of this mode is a form in which the water control device 81 does not operate in FIG. 3, and the indoor control devices 82 → 87 are connected to the indoor temperature set by the indoor user according to the driving signals On of each indoor user. If the temperature of the indoor temperature sensors (63, 64, 65, 66, 67, 68) is less than the set value, the indoor unit (50 → 55) is instructed to operate the indoor unit fan motor (91 → 96). The indoor control devices 85, 86 and 87 control the expansion valves 24, 25 and 26, and the indoor control devices 82, 83 and 84 do not control the expansion valves 21, 22 and 23. , And transmits the operation of the indoor unit (50 → 55) to the main controller 80, and stops the indoor unit above the set value.

At this time, the indoor unit (50 → 55) is one or a part or all of the type is driven by the temperature set value and the operation signal of the user of each room.

The main controller 80 is driven by the operation request signal of the indoor control device 82 → 87, and if there is an operation request, the main controller 80 corresponds to the number of operation requests (indoor heating load) of the indoor control device 82 → 87. Instructs the single or parallel operation of 1 and 2, controls the four sides 5, the control 30 and the expansion valve 20, the expansion valves 21, 22, 23 to the respective indoor control device 82, 83, 84) when the operation request.

The condensation pressure sensor 70 and the condensation temperature sensor 60 of the control logic may be selectively or in combination, the condensation pressure sensor 70 may cope with a pressure switch, the condensation temperature sensor 60 Can cope with temperature switch.

The outdoor unit system 300 of FIG. 1 has a form in which only one heat exchanger 40 is selectively attached as shown in FIG. 2 and is used as a hot water supply or a hot water heater, and the heat storage system 500 includes water. The tank 7 is a form installed one by one.

Although not shown herein, the heat exchangers 40 and 41 and the heat exchangers 40 and 41 of the heat storage system 500 may be attached to the outdoor unit system 300, and the outdoor unit system 300 and the heat storage system 500. ) May be manufactured in one system, and the control valve 30 may be omitted depending on the production type, and the order of the hot water supply heat exchanger 40 and the hot water heat exchanger 41 is based on the compressors 1 and 2. It can also be produced by changing the compressor (1) → hot water heat exchanger (41) → hot water supply heat exchanger (40) → four sides (5).

       4 is a diagram Pi illustrating a cycle of a heat pump system according to the present invention, where conventional refrigeration air conditioning cycles i1 ′, i2 ′, i3 operate at high pressure P2 ′ and low pressure P1 ′. In the cycles i1, i2, i3 of the invention, in the system operating at high pressure (P2) and low pressure (P1), the discharge temperature is i2 'is higher than i2, so i2' becomes high temperature, and the amount (i2'-i1 ') Since it is larger than this amount (i2-i1), the conventional refrigeration air conditioning system causes burnout due to the overload of the compressors (1, 2) with more work and a higher discharge temperature, and the unit cooling capacity (i1-i3) As it is larger than (i1'-i3 '), the cooling capacity of the evaporator 50 → 55 can be improved to cool the air at the outlet of the evaporator 50 → 55 to a lower temperature.

5 and 6 are time-pressure diagram and pressure-power diagram when the heat pump system is operated in summer hot water supply and cold wind mode according to the present invention, the conventional refrigeration air conditioning cycle (AB-C ') is a high pressure (P2') Cycle (ABC) of the present invention is a high pressure (P2), the power consumption at this time consumes W1 at P2, W2 at P2 ', so W2> W1, the cycle of the present invention is better than the conventional heat pump system High efficiency cycle with low energy consumption.

In addition, in the summer, cooling and hot water are simultaneously performed, thereby enabling high-efficiency operation of total energy efficiency = 2.5 + 3.5 = 6.0 by adding cooling energy efficiency (energy efficiency = cooling capacity / total energy input) 2.5 and heating energy efficiency 3.5.

1 is a schematic diagram showing a multi-heat pump system according to the present invention.

2 is a view showing another operating schematic diagram of a multi heat pump system according to the present invention;

3 is a diagram illustrating a control operation schematic diagram of a multi-heat pump system according to the present invention.

4 is a view showing a cycle diagram of a refrigeration air conditioning system according to the present invention

5 is a view showing a time-pressure diagram of a refrigeration air conditioning system according to the present invention;

6 is a view showing the pressure-consumption power of the refrigeration air conditioning system according to the present invention

7 is a schematic diagram of an example (1) of a conventional system.

8 is a schematic diagram of an example (2) of a conventional system.

Claims (6)

A compressor for compressing and discharging the refrigerant gas to a high temperature and high pressure state, a condenser for condensing the refrigerant compressed in the compressor to a liquid phase, and an expansion for expanding the high temperature and high pressure liquid refrigerant condensed in the condenser into a low pressure liquid refrigerant Evaporator and cold to return the low-temperature, low-pressure gaseous refrigerant gas to the compressor while achieving a freezing effect by heat exchange with the object to be cooled by using the latent heat of evaporation of the valve and the refrigerant expanded by the expansion valve. In the multi-heat pump system comprising a four-sided for heating switching, The outdoor unit system 300 which consists of the said compressor 1, 2, the control side 30, the four-sided side 5, the outdoor unit 3, the expansion side 20, the expansion side 21, 22, 23, and the main controller 80. ); An indoor unit system 400 including the indoor units 50, 51, 52, 53, 53, 54, 55, expansion valves 24, 25, 26, and indoor controllers 82, 83, 84, 85, 86, 87. ; The hot water heat exchanger 40, the heating hot water heat exchanger 41, the water tank (7, 8) and the water control device 81 to the heat storage and storage of the hot water and heating hot water, heat that is selectively operated when necessary Heat pump system characterized by a storage system (500). 2. The hot water supply heat exchanger (40) and the hot water heat exchanger (41) between the outlets of the compressors (1, 2) and the four sides (5), and each of the hot water tank (7) and the hot water tank (8) are attached. The multi-heat pump system of the attached form, the control side 30 is attached to directly connect the compressor (1, 2) and the four sides (5). The structure of claim 2, wherein the heat exchanger 40 and the water tank 7 are attached one by one, or the control valve 30 is omitted, or the compressors 1 and 2, as shown in FIG. The hot water heat exchanger 40 and the hot water heat exchanger 41 in the form of a reversed order, or one or both of the heat exchanger (40, 41) attached to the outdoor unit system 300, or Heat pump system, characterized in that the outdoor unit system 300 and the heat storage system 500 is made as a single system. The heat pump system according to claim 1, wherein the hot water tank (7) or the hot water tank (8) is omitted, or the hot water tank (7) and the hot water tank (8) are omitted. The method of claim 1, wherein the expansion edges 21, 22, and 23 are attached to the outdoor unit system 300, and the expansion edges 24, 25, and 26 are attached to the indoor units 53, 54, and 55, respectively. In the multi-heat, characterized in that the indoor unit (50, 51, 53) of the attached form of the expansion valve (21, 22, 23) to the outdoor unit system 300 is optionally configured in part, all or none Pump system. The system of claim 1, wherein the condensation pressure sensor 70 and the condensation temperature sensor 60 of the heat storage system 500 are optionally configured alone or in combination, and the condensation pressure sensor 70 is changed to a pressure switch. Or, the condensation temperature sensor 60 is changed to a temperature switch.
KR1020090021145A 2009-03-12 2009-03-12 Heat pump system KR20100102863A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305815B6 (en) * 2015-07-31 2016-03-23 Veskom, Spol. S R.O. Heat pump cooling module
CN111023227A (en) * 2019-11-21 2020-04-17 东南大学 Double-stage compression heat source tower heat pump system suitable for cold areas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305815B6 (en) * 2015-07-31 2016-03-23 Veskom, Spol. S R.O. Heat pump cooling module
CN111023227A (en) * 2019-11-21 2020-04-17 东南大学 Double-stage compression heat source tower heat pump system suitable for cold areas
CN111023227B (en) * 2019-11-21 2021-06-25 东南大学 Double-stage compression heat source tower heat pump system suitable for cold areas

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