WO2018063103A1 - A water-cooled split air conditioner capable of making hot water - Google Patents

A water-cooled split air conditioner capable of making hot water Download PDF

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Publication number
WO2018063103A1
WO2018063103A1 PCT/TH2017/000008 TH2017000008W WO2018063103A1 WO 2018063103 A1 WO2018063103 A1 WO 2018063103A1 TH 2017000008 W TH2017000008 W TH 2017000008W WO 2018063103 A1 WO2018063103 A1 WO 2018063103A1
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WO
WIPO (PCT)
Prior art keywords
water
refrigerant
heat exchanger
air conditioner
compressor
Prior art date
Application number
PCT/TH2017/000008
Other languages
French (fr)
Inventor
Somsak CHITIPALUNGSRI
Original Assignee
Chitipalungsri Somsak
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 TH1601005919A external-priority patent/TH170626A/en
Application filed by Chitipalungsri Somsak filed Critical Chitipalungsri Somsak
Publication of WO2018063103A1 publication Critical patent/WO2018063103A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F24H4/04—Storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/04—Desuperheaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/003—Indoor unit with water as a heat sink or heat source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/004—Outdoor unit with water as a heat sink or heat source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F25B2700/193—Pressures of the compressor
    • F25B2700/1931—Discharge pressures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F25B2700/193—Pressures of the compressor
    • F25B2700/1933—Suction pressures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2116—Temperatures of a condenser
    • F25B2700/21161—Temperatures of a condenser of the fluid heated by the condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator
    • F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator

Definitions

  • US patent document no. US 2008/0087027 Al discloses a water-cooled air conditioner including an indoor unit, an outdoor unit, a cooling tower and a boiler, wherein the indoor unit performs cooling or heating of a space; and including a first heat exchanger which performs exchanging between air and refrigerant.
  • the outdoor unit is installed separately from the indoor unit and includes a second heat exchanger which performs heat exchanging between water and ref igerant.
  • the cooling tower is connected to the outdoor unit and cools the water flowing to the second heat exchanger.
  • the boiler is connected to the outdoor unit and increases the temperature of the water flowing to the second heat exchanger.
  • the present invention relates to a water-cooled split air conditioner capable of making hot water comprising: an indoor unit functioning as indoor air cooler or heater; a water heating unit for making hot water for indoor use; and a cooling unit connected to the indoor unit and the water heating unit.
  • the cooling unit comprises a four- way valve connected to the indoor unit via a refrigerant tube for directing the flow of the refrigerant to a first direction or a second direction; a compressor connected to the four-way valve via a refrigerant tube for compressing the refrigerant; a first heat exchanger for exchanging the heat between the refrigerant of the air conditioner and the water of the water heating unit in order to heat up the water in the water heating unit, one end of the refrigerant tube in the first heat exchanger being connected to the compressor and the other end being connected to the four-way valve; and a second heat exchanger for exchanging the heat between the refrigerant of the air conditioner and the water of the external cooling tower, one end of the refrigerant tube
  • Fig. 1 shows the operation chart of the water-cooled split air conditioner capable of making hot water according to the present invention.
  • Fig. 1 shows the operation chart of the water-cooled split air conditioner capable of making hot water according to the present invention. This is only an exemplary embodiment which should not be, in any way, considered as limiting the present invention to such embodiment per se.
  • the water-cooled split air conditioner capable of making hot water comprises an indoor unit 1 functioning as indoor air cooler or heater; a water heating unit 2 for making hot water for indoor use; and a cooling unit 3 connected to the indoor unit 1 and the water heating unit 2.
  • the cooling unit 3 comprises a four- way valve 3.1 connected to the indoor unit 1 via a refrigerant tube for directing the flow of the refrigerant to a first direction or a second direction; a compressor 3.2 connected to the four- way valve 3.1 via a refrigerant tube for compressing the refrigerant; a first heat exchanger 3.3, for exchanging the heat between the refrigerant of the air conditioner and the water of the water heating unit 2 in order to heat up the water in the heating unit 2, one end of which is connected to the compressor 3.2 and the other end is connected to the four-way valve 3.1; and the second heat exchanger 3.4, for exchanging the heat between the refrigerant of the air conditioner and the water of the external cooling tower, one end of
  • the components such as the four-way valve 3. 1 , the compressor 3.2 , the first heat exchanger 3. 3 , the second heat exchanger 3 .4 , and the expansion valve 3.5 provided in the cooling unit 3 are advantageous in that it requires smaller space for installing the cooling unit 3 allowing the installation of the cooling unit 3 in a small space.
  • the cooling unit 3 may be installed within the room rather than in the porch e.g. on the ceiling, etc.
  • the four- way valve 3.1 directs the flow of the refrigerant to the first direction, thereby passing the indoor unit 1, the four-way valve 3.1, the compressor 3.2, the first heat exchanger 3.3, the four-way valve 3.1, the second heat exchanger 3.4 and the expansion valve 3.5, respectively.
  • the four-way valve 3.1 directs the flow of the refrigerant to the second direction, thereby passing the indoor unit 1 , the expansion valve 3.5, the second heat exchanger 3.4, the four- way valve 3.1, the compressor 3.2, the first heat exchanger 3.3 and the four- way valve 3.1, respectively.
  • the first direction makes the indoor unit 1 function as air cooler and the second direction makes the an indoor unit 1 function as heater.
  • providing the four- way valve 3.1 which directs the flow of the refrigerant to the first direction, making the indoor unit 1 function as air cooler or which directs the flow of the refrigerant to the second direction, making the indoor unit 1 function as heater is advantageous in that two functions are included in only one air conditioner, thereby minimizing the space required for installation i.e. users so not have to find two spaces for installing both the air conditioner and the water heater.
  • a water heating unit 2 comprises a water tank 2.1; a water outlet 2.2 one end of which is connected to the water tank 2.1 and the other end is connected to the first heat exchanger 3.3 for supplying the water to be heated to the first heat exchanger 3.3 a water inlet 2.3 one end of which is connected to the first heat exchanger 3.3; and the other end is connected to the water tank 2.1 for receiving the heated water from the first heat exchanger 3.3; a water pump 2.4 connected to the water inlet 2.3 for drawing and supplying the water; and a water temperature sensor 2.5 provided at the water inlet 2.3 for measuring the water temperature
  • the water pump 2.4 when the water temperature detected by the water temperature sensor 2.5 is lower than the predetermined value, the water pump 2.4 is activated and when the water temperature detected by the water temperature sensor 2.5 reaches the predetermined value, a water pump 2.4 is deactivated.
  • the heat exchange between the water of the water heating unit 2 and the refrigerant of the air conditioner in the first heat exchanger 3.3 is advantageous in that the heat from the air conditioner can be used to heat the up the water, thus the water heating unit 2 will no longer requires electricity to heat the water.
  • the cooling unit 3 further comprises a first refrigerant pressure gauge 3.6 for measuring the refrigerant pressure at one side of the compressor 3.2; a second refrigerant pressure gauge 3.7 for measuring the refrigerant pressure at the other side of the compressor 3.2; a first refrigerant temperature sensor 3.8 for measuring the refrigerant temperature at one side of the compressor 3.2; a second refrigerant temperature sensor 3.9 for measuring the refrigerant temperature at the other side of the compressor 3.2; and the third refrigerant temperature sensor 3.10 for measuring the refrigerant temperature at the outlet of the expansion valve 3.5.
  • the water-cooled split air conditioner capable of making hot water further comprises a control unit 4 for controlling the operation of the a compressor 3.2 based on the measurement data i.e. the pressure of the refrigerant before entering the compressor 3.2, the pressure of the refrigerant exiting the compressor 3.2, the temperature of the refrigerant before entering the compressor 3.2, the temperature of the refrigerant exiting the compressor 3.2, the temperature of the refrigerant exiting the expansion valve 3.5, the temperature of the refrigerant before entering the indoor unit 1, the temperature of the refrigerant exiting the indoor unit 1, the temperature of the water exiting the first heat exchanger 3.3, the temperature of the water before entering the second heat exchanger 3.4 and the temperature of the water exiting the second heat exchanger 3.4.
  • the measurement data i.e. the pressure of the refrigerant before entering the compressor 3.2, the pressure of the refrigerant exiting the compressor 3.2, the temperature of the refrigerant before entering the compressor 3.2, the temperature of the refrigerant exit
  • the water-cooled split air conditioner capable of making hot water according to the present invention comprises several components with features offering the advantages as mentioned above.
  • the water-cooled split air conditioner capable of making hot water according to the present invention is not limited to said components. Modifications and changes can still be made to thereto, or it can be embodied in any other fashion which would yield similar technical results. Said modifications and changes are considered to be within the spirit and the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

The present invention relates to a water-cooled split air conditioner capable of making hot water comprising: an indoor unit functioning as indoor air cooler or heater; a water heating unit for making hot water for indoor use; and a cooling unit connected to the indoor unit and the water heating unit. According to the present invention, the cooling unit comprises a four- way valve connected to the indoor unit via a refrigerant tube for directing the flow of the refrigerant to a first direction or a second direction; a compressor connected to the four-way valve via a refrigerant tube for compressing the refrigerant; a first heat exchanger for exchanging the heat between the refrigerant of the air conditioner and the water of the water heating unit in order to heat up the water in the water heating unit, one end of the refrigerant tube in the first heat exchanger being connected to the compressor and the other end being connected to the four- way valve; and a second heat exchanger for exchanging the heat between the refrigerant of the air conditioner and the water of the external cooling tower, one end of the refrigerant tube in the second heat exchanger being connected to the four-way valve and the other end being connected to the indoor unit via the refrigerant tube through an expansion valve.

Description

A WATER-COOLED SPLIT AIR CONDITIONER CAPABLE OF
MAKING HOT WATER
TECHNICAL FIELD
Engineering related to a water-cooled split air conditioner capable of making hot water
BACKGROUND OF THE INVENTION
In residential premises or condominiums nowadays, it is common to install a split air conditioner for the purpose of adjusting the temperature and a water heater for the purpose of normal consumption. Conventionally, an air conditioner and a water heater are installed separately i.e. in the form of separate system. Therefore, the use of both the air conditioner and the water heater consumes considerable energy. Also, in some cases, the outdoor unit of such air-cooled split air conditioners may be large to achieve sufficient cooling, thus the installation might not be achievable in some areas such as small condominium premises with limited space for installation.
Several techniques have been used to solve the above problems. Accordingly, we have researched the related prior arts and the following document was found:
US patent document no. US 2008/0087027 Al discloses a water-cooled air conditioner including an indoor unit, an outdoor unit, a cooling tower and a boiler, wherein the indoor unit performs cooling or heating of a space; and including a first heat exchanger which performs exchanging between air and refrigerant. The outdoor unit is installed separately from the indoor unit and includes a second heat exchanger which performs heat exchanging between water and ref igerant. The cooling tower is connected to the outdoor unit and cools the water flowing to the second heat exchanger. The boiler is connected to the outdoor unit and increases the temperature of the water flowing to the second heat exchanger.
However, the above problems remains unsolved despite this prior art.
SUMMARY OF THE INVENTION
The present invention relates to a water-cooled split air conditioner capable of making hot water comprising: an indoor unit functioning as indoor air cooler or heater; a water heating unit for making hot water for indoor use; and a cooling unit connected to the indoor unit and the water heating unit. According to the present invention, the cooling unit comprises a four- way valve connected to the indoor unit via a refrigerant tube for directing the flow of the refrigerant to a first direction or a second direction; a compressor connected to the four-way valve via a refrigerant tube for compressing the refrigerant; a first heat exchanger for exchanging the heat between the refrigerant of the air conditioner and the water of the water heating unit in order to heat up the water in the water heating unit, one end of the refrigerant tube in the first heat exchanger being connected to the compressor and the other end being connected to the four-way valve; and a second heat exchanger for exchanging the heat between the refrigerant of the air conditioner and the water of the external cooling tower, one end of the refrigerant tube in the second heat exchanger being connected to the four-way valve and the other end being connected to the indoor unit via the refrigerant tube through an expansion valve.
It is an object of the present invention to provide a water-cooled split air conditioner capable of making hot water comprising improved features and capable of overcoming the above-mentioned limitations, offering several advantages such as:
- improving the solution to the outdoor unit installation space-related limitations; - n inimizing the energy consumption of the air conditioner and the water heater
- having the ability to perform cooling or heating of the desired area.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 shows the operation chart of the water-cooled split air conditioner capable of making hot water according to the present invention. DETAILED DESCRIPTION
The water-cooled split air conditioner capable of making hot water according to the present invention will now be described in further detail with reference to the accompanying drawings.
Fig. 1 shows the operation chart of the water-cooled split air conditioner capable of making hot water according to the present invention. This is only an exemplary embodiment which should not be, in any way, considered as limiting the present invention to such embodiment per se.
The water-cooled split air conditioner capable of making hot water according to the present invention comprises an indoor unit 1 functioning as indoor air cooler or heater; a water heating unit 2 for making hot water for indoor use; and a cooling unit 3 connected to the indoor unit 1 and the water heating unit 2. According to the present invention, the cooling unit 3 comprises a four- way valve 3.1 connected to the indoor unit 1 via a refrigerant tube for directing the flow of the refrigerant to a first direction or a second direction; a compressor 3.2 connected to the four- way valve 3.1 via a refrigerant tube for compressing the refrigerant; a first heat exchanger 3.3, for exchanging the heat between the refrigerant of the air conditioner and the water of the water heating unit 2 in order to heat up the water in the heating unit 2, one end of which is connected to the compressor 3.2 and the other end is connected to the four-way valve 3.1; and the second heat exchanger 3.4, for exchanging the heat between the refrigerant of the air conditioner and the water of the external cooling tower, one end of which is connected to the four-way valve 3.1 and the other end is connected to the indoor unit 1 via a refrigerant tube through an expansion valve 3.5.
According to the above embodiment, the components such as the four-way valve 3. 1 , the compressor 3.2 , the first heat exchanger 3. 3 , the second heat exchanger 3 .4 , and the expansion valve 3.5 provided in the cooling unit 3 are advantageous in that it requires smaller space for installing the cooling unit 3 allowing the installation of the cooling unit 3 in a small space. For example, the cooling unit 3 may be installed within the room rather than in the porch e.g. on the ceiling, etc.
According to the present invention, the four- way valve 3.1 directs the flow of the refrigerant to the first direction, thereby passing the indoor unit 1, the four-way valve 3.1, the compressor 3.2, the first heat exchanger 3.3, the four-way valve 3.1, the second heat exchanger 3.4 and the expansion valve 3.5, respectively.
According to the present invention, the four-way valve 3.1 directs the flow of the refrigerant to the second direction, thereby passing the indoor unit 1 , the expansion valve 3.5, the second heat exchanger 3.4, the four- way valve 3.1, the compressor 3.2, the first heat exchanger 3.3 and the four- way valve 3.1, respectively.
According to the present invention, the first direction makes the indoor unit 1 function as air cooler and the second direction makes the an indoor unit 1 function as heater.
According to the above embodiment, providing the four- way valve 3.1 which directs the flow of the refrigerant to the first direction, making the indoor unit 1 function as air cooler or which directs the flow of the refrigerant to the second direction, making the indoor unit 1 function as heater, is advantageous in that two functions are included in only one air conditioner, thereby minimizing the space required for installation i.e. users so not have to find two spaces for installing both the air conditioner and the water heater. According to the present invention, a water heating unit 2 comprises a water tank 2.1; a water outlet 2.2 one end of which is connected to the water tank 2.1 and the other end is connected to the first heat exchanger 3.3 for supplying the water to be heated to the first heat exchanger 3.3 a water inlet 2.3 one end of which is connected to the first heat exchanger 3.3; and the other end is connected to the water tank 2.1 for receiving the heated water from the first heat exchanger 3.3; a water pump 2.4 connected to the water inlet 2.3 for drawing and supplying the water; and a water temperature sensor 2.5 provided at the water inlet 2.3 for measuring the water temperature
According to the present invention, when the water temperature detected by the water temperature sensor 2.5 is lower than the predetermined value, the water pump 2.4 is activated and when the water temperature detected by the water temperature sensor 2.5 reaches the predetermined value, a water pump 2.4 is deactivated.
According to the above embodiment, The heat exchange between the water of the water heating unit 2 and the refrigerant of the air conditioner in the first heat exchanger 3.3 is advantageous in that the heat from the air conditioner can be used to heat the up the water, thus the water heating unit 2 will no longer requires electricity to heat the water.
According to the present invention, the cooling unit 3 further comprises a first refrigerant pressure gauge 3.6 for measuring the refrigerant pressure at one side of the compressor 3.2; a second refrigerant pressure gauge 3.7 for measuring the refrigerant pressure at the other side of the compressor 3.2; a first refrigerant temperature sensor 3.8 for measuring the refrigerant temperature at one side of the compressor 3.2; a second refrigerant temperature sensor 3.9 for measuring the refrigerant temperature at the other side of the compressor 3.2; and the third refrigerant temperature sensor 3.10 for measuring the refrigerant temperature at the outlet of the expansion valve 3.5.
According to the present invention, the water-cooled split air conditioner capable of making hot water further comprises a control unit 4 for controlling the operation of the a compressor 3.2 based on the measurement data i.e. the pressure of the refrigerant before entering the compressor 3.2, the pressure of the refrigerant exiting the compressor 3.2, the temperature of the refrigerant before entering the compressor 3.2, the temperature of the refrigerant exiting the compressor 3.2, the temperature of the refrigerant exiting the expansion valve 3.5, the temperature of the refrigerant before entering the indoor unit 1, the temperature of the refrigerant exiting the indoor unit 1, the temperature of the water exiting the first heat exchanger 3.3, the temperature of the water before entering the second heat exchanger 3.4 and the temperature of the water exiting the second heat exchanger 3.4.
The water-cooled split air conditioner capable of making hot water according to the present invention comprises several components with features offering the advantages as mentioned above. However, the water-cooled split air conditioner capable of making hot water according to the present invention is not limited to said components. Modifications and changes can still be made to thereto, or it can be embodied in any other fashion which would yield similar technical results. Said modifications and changes are considered to be within the spirit and the scope of the present invention.

Claims

WHAT IS CLAIMED IS:
1. A water-cooled split air conditioner capable of making hot water comprising:
- an indoor unit (1) functioning as indoor air cooler or heater;
- a water heating unit (2) for making hot water for indoor use; and
- a cooling unit ( 3 ) connected to the indoor unit ( 1 ) and the water heating unit (2)
characterized in that
the cooling unit (3) comprises:
- a four-way valve (3. 1 ) connected to the indoor unit ( 1 ) via a refrigerant tube for directing the flow of the refrigerant to a first direction or a second direction;
- a compressor (3.2) connected to the four-way valve (3.1 ) via a refrigerant tube for compressing the refrigerant;
- a first heat exchanger (3.3) for exchanging the heat between the refrigerant of the air conditioner and the water of the water heating unit (2) in order to heat up the water in the water heating unit (2), one end of the refrigerant tube in the first heat exchanger (3.3) being connected to the compressor ( 3 .2 ) and the other end being connected to the four-way valve (3.1); and
- a second heat exchanger (3.4) for exchanging the heat between the refrigerant of the air conditioner and the water of the external cooling tower, one end of the refrigerant tube in the second heat exchanger (3 .4) being connected to the four- way valve (3 .1 ) and the other end being connected to the indoor unit ( 1 ) via the refrigerant tube through an expansion valve (3.5).
2. The water-cooled split air conditioner capable of making hot water according to claim 1 , wherein the four-way valve ( 3 . 1 ) directs the flow of the refrigerant to the first direction, thereby passing the indoor unit (1 ), the four-way valve (3.1 ), the compressor (3.2), the first heat exchanger (3.3), the four-way valve (3.1), the second heat exchanger (3.4) and the expansion valve (3.5), respectively.
3. The water-cooled split air conditioner capable of making hot water according to claim 1 , wherein the four-way valve ( 3 . 1 ) directs the flow of the refrigerant to the second direction, thereby passing the indoor unit ( 1 ) , the expansion valve ( 3 . 5 ) , the second heat exchanger (3.4), the four-way valve (3.1 ), the compressor (3.2), the first heat exchanger (3.3) and the four-way valve (3.1), respectively.
4. The water-cooled split air conditioner capable of making hot water according to claim 1 or 2, wherein the first direction makes the indoor unit (1) function as air cooler.
5. The water-cooled split air conditioner capable of making hot water according to claim 1 or 3, wherein the second direction makes the indoor unit (1) function as heater.
6. The water-cooled split air conditioner capable of making hot water according to claim 1, wherein the water heating unit (2) comprises:
- a water tank (2.1);
- a water outlet (2.2), one end of which is connected to the water tank (2.1 ) and the other end is connected to the first heat exchanger (3.3) for supplying the water to be heated to the first heat exchanger (3.3);
- a water inlet (2.3 ), one end of which is connected to the first heat exchanger (3.3) and the other end is connected to the water tank (2.1) for receiving the heated water from the first heat exchanger (3.3);
- a water pump ( 2 .4 ) connected to the water inlet ( 2 .3 ) for drawing and supplying the water; and
- a water temperature sensor ( 2 . 5 ) provided at the water inlet ( 2 . 3 ) for measuring the water temperature.
7. The water-cooled split air conditioner capable of making hot water according to claim 6 , wherein when the water temperature measured by the water temperature sensor (2.5) is less than the predetermined value, the water pump (2 .4 ) is activated and when the water temperature measured by the water temperature sensor (2.5) reaches the predetermined value, the water pump (2.4) is deactivated.
8. The water-cooled split air conditioner capable of making hot water according to any one of the preceding claims, wherein the cooling unit (3) further comprises:
- a first refrigerant pressure gauge (3 .6) for measuring the refrigerant pressure at one side of the compressor (3.2);
- a second refrigerant pressure gauge ( 3 . 7 ) for measuring the refrigerant pressure at the other side of the compressor (3.2);
- a first refrigerant temperature sensor ( 3 . 8 ) for measuring the refrigerant temperature at one side of the compressor (3.2);
- a second refrigerant temperature sensor ( 3 .9 ) for measuring the refrigerant temperature at the other side of the compressor (3.2); and - a third refrigerant temperature sensor ( 3 . 1 0 ) for measuring the refrigerant temperature at the outlet of the expansion valve (3.5).
9. The water-cooled split air conditioner capable of making hot water according to any one of the preceding claims further comprising a control unit ( 4 ) for controlling the operation of the compressor (3.2).
10. The water-cooled split air conditioner capable of making hot water according to claim 9, wherein the control unit (4) controls the operation of the compressor (3.2) based on the measurement data selected from the pressure of the refrigerant before entering the compressor (3.2), the pressure of the refrigerant exiting the compressor (3.2), the temperature of the refrigerant before entering the compressor ( 3 .2 ) , the temperature of the refrigerant exiting the compressor ( 3 .2 ), the temperature of the refrigerant exiting the expansion valve (3.5), the temperature of the refrigerant before entering the indoor unit (1 ), the temperature of the refrigerant exiting the indoor unit ( 1 ) , the temperature of the water exiting the first heat exchanger (3.3), the temperature of the water before entering the second heat exchanger (3.4) and the temperature of the water exiting the second heat exchanger (3.4).
PCT/TH2017/000008 2016-09-30 2017-02-15 A water-cooled split air conditioner capable of making hot water WO2018063103A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TH1601005919A TH170626A (en) 2016-09-30 Split air conditioner, cooled by water, that can make hot water.
TH1601005919 2016-09-30

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WO2018063103A1 true WO2018063103A1 (en) 2018-04-05

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916638A (en) * 1974-06-25 1975-11-04 Weil Mclain Company Inc Air conditioning system
JPS5840464A (en) * 1981-09-02 1983-03-09 三菱重工業株式会社 Air conditioner
JPS5935761A (en) * 1982-08-23 1984-02-27 株式会社袋井内山商会 Water cooling type heat pump
JPH07225064A (en) * 1994-02-15 1995-08-22 Hitachi Ltd Heat pump hot water supplying apparatus
US6263964B1 (en) * 1999-11-12 2001-07-24 Cheng-Fu Yang Heat exchanging apparatus of refrigeration system
US20050011210A1 (en) * 2003-07-17 2005-01-20 Kuo-An Wu Multifunctional energy-adjustable net control air conditioner
JP2009222314A (en) * 2008-03-17 2009-10-01 Denso Corp Refrigerating cycle device
JP2013104583A (en) * 2011-11-11 2013-05-30 Gunma Denki Kk Air-conditioning water heater

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916638A (en) * 1974-06-25 1975-11-04 Weil Mclain Company Inc Air conditioning system
JPS5840464A (en) * 1981-09-02 1983-03-09 三菱重工業株式会社 Air conditioner
JPS5935761A (en) * 1982-08-23 1984-02-27 株式会社袋井内山商会 Water cooling type heat pump
JPH07225064A (en) * 1994-02-15 1995-08-22 Hitachi Ltd Heat pump hot water supplying apparatus
US6263964B1 (en) * 1999-11-12 2001-07-24 Cheng-Fu Yang Heat exchanging apparatus of refrigeration system
US20050011210A1 (en) * 2003-07-17 2005-01-20 Kuo-An Wu Multifunctional energy-adjustable net control air conditioner
JP2009222314A (en) * 2008-03-17 2009-10-01 Denso Corp Refrigerating cycle device
JP2013104583A (en) * 2011-11-11 2013-05-30 Gunma Denki Kk Air-conditioning water heater

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