KR100624810B1 - Device of Heat-Change for Air-conditioner - Google Patents

Device of Heat-Change for Air-conditioner Download PDF

Info

Publication number
KR100624810B1
KR100624810B1 KR1020040028227A KR20040028227A KR100624810B1 KR 100624810 B1 KR100624810 B1 KR 100624810B1 KR 1020040028227 A KR1020040028227 A KR 1020040028227A KR 20040028227 A KR20040028227 A KR 20040028227A KR 100624810 B1 KR100624810 B1 KR 100624810B1
Authority
KR
South Korea
Prior art keywords
heat
heat exchanger
storage tank
air conditioner
air
Prior art date
Application number
KR1020040028227A
Other languages
Korean (ko)
Other versions
KR20050102901A (en
Inventor
박정택
황윤제
Original Assignee
엘지전자 주식회사
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
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020040028227A priority Critical patent/KR100624810B1/en
Publication of KR20050102901A publication Critical patent/KR20050102901A/en
Application granted granted Critical
Publication of KR100624810B1 publication Critical patent/KR100624810B1/en

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G17/00Coffins; Funeral wrappings; Funeral urns
    • A61G17/06Sacks for corpses; Corpse wrappings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G17/00Coffins; Funeral wrappings; Funeral urns
    • A61G17/007Coffins; Funeral wrappings; Funeral urns characterised by the construction material used, e.g. biodegradable material; Use of several materials

Abstract

The present invention relates to a heat exchange device for an air conditioner, comprising: a heat storage tank for storing a high temperature liquid; It is composed of an air conditioner including a first heat exchanger for preheating air by supplying a high temperature liquid stored in the heat storage tank, and a second heat exchanger for allowing heat exchange with the refrigerant. The low pressure refrigerant exchanges heat with the preheated air passing through the first heat exchanger in the second heat exchanger, thereby increasing the efficiency of the air conditioner and recovering the heat of the hot water generated in the fuel cell. The efficiency is maximized.
Air Conditioner, Outdoor Unit, Heat Storage Tank, Heat Exchanger, Fuel Cell

Description

Heat exchanger of air conditioner {Device of Heat-Change for Air-conditioner}             

1 is a perspective view showing a separate air conditioner according to the prior art,

2 is a cross-sectional view of the outdoor unit of the air conditioner according to the prior art,

3 is a cross-sectional view showing a membrane assembly (MEA) of a typical fuel cell,

4 is a partially cutaway perspective view showing an embodiment of a heat exchange device of an air conditioner according to the present invention;

5 is a cross-sectional view of an outdoor unit of the heat exchanger of the air conditioner according to the present invention;

6 is a block diagram in which a fuel cell is connected to a heat exchange device of an air conditioner according to the present invention.

<Explanation of symbols on main parts of the drawings>

4: indoor unit 5: outdoor unit

6: heat storage tank 7: water pump

8 fuel cell stack 45 refrigerant piping

51: outdoor blower 53: first heat exchanger

54 second heat exchanger 55 compressor

57 casing 71 inlet pipe

72: outlet pipe 81: heat storage tank water supply pipe

The present invention relates to a heat exchange device of an air conditioner, and preheats the air supplied to the air conditioner by using a high temperature liquid stored in the heat storage tank during heating to improve the efficiency when the low temperature and low pressure refrigerant exchanges heat with air. It relates to a heat exchange device of an increasing air conditioner.

In general, an air conditioner is a device for treating intake air and supplying it to a building or a room so as to maintain indoor air in a comfortable condition.

The one-piece type and the separate type are functionally the same, but the one-piece type integrates the function of cooling heat dissipation, and is directly installed by drilling a hole in the wall of the house or by hanging the device on the window. The separate type is installed by separating the cooling heat dissipation function on the indoor side and the outdoor side. It is.

1 is a perspective view showing a separate air conditioner according to the prior art, Figure 2 is a cross-sectional view of the outdoor unit of the air conditioner according to the prior art.

The separate type air conditioner according to the prior art is composed of an indoor unit 1 and an outdoor unit 2, as shown in Figs. 1 and 2, the indoor unit (1) is to suck the air of the room into the indoor unit and discharge it to the room An indoor blower 11 and an indoor heat exchanger 13 for heating or cooling the air sucked into the indoor unit 1 by heat exchange with a refrigerant are mounted.

The outdoor unit 2 includes a casing 27 for creating a space therein, a compressor 25 for compressing a refrigerant provided in the casing 27, and outdoor air being sucked into the outdoor unit and then discharged back to the outdoor unit. The outdoor blower 21, and the outdoor heat exchanger 23 to heat exchange the air sucked by the outdoor blower 21 with the refrigerant. The indoor unit 1 and the outdoor unit 2 are connected to each other by a refrigerant pipe 15 through which the refrigerant can move.

When the indoor unit 1 of the conventional air conditioner configured as described above is heated and driven, the high temperature and high pressure refrigerant compressed by the compressor 25 is transferred to the indoor heat exchanger of the indoor unit 1 through the refrigerant pipe 15. 13) is sent to. The high-temperature, high-pressure gas refrigerant introduced into the indoor heat exchanger 13 condenses into a liquid and radiates heat of the refrigerant to the surroundings so that the indoor unit 1 functions as a heater. Then, the refrigerant passing through the indoor heat exchanger 13 is expanded at a low temperature and low pressure while passing through an expansion mechanism (not shown), flows into the outdoor heat exchanger 23, and passes through the outdoor heat exchanger 23. The refrigerant is evaporated to a gaseous state by heat exchange with ambient air, and circulated to the compressor 25.

3 is a cross-sectional view illustrating a membrane assembly (MEA) of a general fuel cell.

Fuel-Cell is a new, high-efficiency, pollution-free power generation unit that generates electricity directly from fuel by using electrochemical reactions. It has no exhaust gas and is environmentally friendly. Device. The basic principle of the fuel cell is to combine with hydrogen and oxygen to generate electricity while generating water.

The fuel cell is reacted in a stack, and as shown in FIG. 3, the stack is formed by sequentially stacking membrane assemblies (MEAs) 3, and the membrane assemblies 3 are anodes. At 32, 2H 2 ?? 4H + + 4e - The reaction (hereinafter referred to as the first reaction), this taking place in the cathode (Cathode) (33) O 2 + 4H + + 4e - ?? A 2H 2 O reaction (hereinafter referred to as a second reaction) occurs.

H + (hydrogen ion) generated in the cathode 32 passes through a polymer electrolyte 31 and moves to the cathode 72 to react.

In the cathode 32, e (electron) generated as a result of the first reaction generates energy at an external resistance, and then moves to the anode 33 to perform a second reaction at the anode 33. . As shown in the second reaction, water (H 2 O) is generated as a by-product of the fuel cell, and the water is stored in the heat storage tank.

However, in the air conditioner according to the prior art, when the refrigerant evaporates in the gas state in the outdoor unit during winter heating, the low temperature and low pressure refrigerant exchanges heat with the ambient air having a low temperature. There is a problem that the efficiency of the air conditioner is relatively lower than when made.

In addition, when the heat of the hot water generated in the fuel cell stored in the heat storage tank according to the prior art is not recovered, the efficiency of the fuel cell is 50% or less, which is ideally perfect for recovering the heat of the hot water generated in the fuel cell. There is a problem that the efficiency is relatively low compared to the efficiency of 80% of the case.

The present invention has been made to solve the above problems of the prior art, when the temperature of the outdoor air during the heating of the winter is low temperature, low-pressure refrigerant when the refrigerant evaporated in the gas state in the outdoor unit is a second heat exchanger Heat exchange with the preheated air passing through the first heat exchanger in the can increase the efficiency of the air conditioner, the hot water generated in the fuel cell is stored in the heat storage tank and the heat of the hot water is recovered in the first heat exchanger The purpose of the present invention is to provide a heat exchanger of an air conditioner in which the efficiency of a fuel cell is maximized.

The heat exchanger of the air conditioner according to the present invention for solving the above problems is a heat storage tank (Additional Energy Source) for storing a high temperature liquid; An outdoor unit casing having a space therein; First heat exchangers constituting outer portions of the left and right and rear surfaces of the casing; A second heat exchanger disposed to face the first heat exchanger inside the first heat exchanger so that the air preheated by the first heat exchanger is heat-exchanged with the refrigerant; And a water inlet pipe and a water outlet pipe connected to the first heat exchanger such that the hot liquid stored in the heat storage tank flows into the first heat exchanger.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a partially cutaway perspective view showing an embodiment of a heat exchanger of the air conditioner according to the present invention, Figure 5 is a cross-sectional view of the outdoor unit of the heat exchanger of the air conditioner according to the present invention.

The heat exchanger of the air conditioner according to the present embodiment has a refrigerant pipe connected to the indoor unit 4, the outdoor unit 5, and the indoor unit 4 and the outdoor unit 5, as shown in Figs. 45, a heat storage tank 6 for storing a high-temperature liquid, an inlet pipe 71 for moving hot water from the heat storage tank 6 to the outdoor unit 5, and hot water after heat exchange is performed in the outdoor unit 5 ), A water discharge pipe 72 moving to the heat storage tank 6 and a water pump 7 supplying energy for circulating the hot water.

The outdoor unit 5 includes a casing 57 constituting a space inside the outdoor unit, a first heat exchanger 53 constituting an outer portion of left, right, and rear sides of the outdoor unit, and the first heat exchanger 53. A second heat exchanger 54 which is installed to face the first heat exchanger 53 at an inner side thereof, and the water inlet pipe 71 and the water outlet pipe 72 are connected to the first heat exchanger 53; Is mounted.

Looking at the operation of the present invention configured as described above are as follows.

As shown in FIG. 5, when the water pump 7 is operated, hot water stored in the heat storage tank 6 is sent to the first heat exchanger 53 through the inlet pipe 71. The temperature of the outdoor air is increased while radiating the heat of the hot water to the outdoor air in the first heat exchanger 53. In addition, the hot water passing through the first heat exchanger 53 is sent back to the heat storage tank 6 through the discharge pipe 72 so that the hot water circulates.

On the other hand, when the indoor unit 4 of the air conditioner is heated and driven, the high temperature and high pressure refrigerant from the compressor 55 is sent to the indoor heat exchanger (not shown) of the indoor unit 4. The indoor heat exchanger dissipates heat of the refrigerant to the surroundings while the high temperature and high pressure gas refrigerant condenses into the liquid refrigerant, thereby allowing the indoor unit 4 to function as a heater. Then, the refrigerant passing through the indoor heat exchanger is expanded to a low temperature and low pressure while passing through an expansion mechanism (not shown), flows into the outdoor second heat exchanger 54, and passes through the outdoor second heat exchanger 54. The refrigerant is evaporated in a gaseous state by heat exchange with ambient air, and circulated to the compressor 55.

Therefore, even when the temperature of the outdoor air is very low during the heating of the winter season, the low-temperature, low-pressure refrigerant in the second heat exchanger 54 does not directly exchange heat with cold outdoor air, and the hot water and cold of the heat storage tank 6 are cold. Since the outdoor air heat-exchanges first in the first heat exchanger 53, the second heat exchanger 54 exchanges heat with the preheated air, and a large amount of low-temperature and low-pressure refrigerant is evaporated in a gaseous state. The efficiency is increased.

6 is a block diagram in which a fuel cell is connected to a heat exchange device of an air conditioner according to the present invention.

As shown in FIG. 6, the heat exchanger of the air conditioner according to the present embodiment includes an indoor unit 4, an outdoor unit 5, and a refrigerant pipe 45 connecting the indoor unit 4 and the outdoor unit 5. , The heat storage tank 6, an inlet pipe 71 for moving hot water from the heat storage tank 6 to the outdoor unit 5, and the hot water after heat exchange is transferred from the outdoor unit 5 to the heat storage tank 6. Water (72) and the water pump (7) for supplying the energy to circulate the hot water, and oxygen (O 2) and hydrogen (H 2 ) using water (H 2 O) and electricity And a heat storage tank water supply pipe 81 which is a passage through which water moves so that the water generated in the fuel cell stack 8 can be stored in the heat storage tank 6.

The high temperature liquid stored in the heat storage tank 6 is made of high temperature water which is a by-product generated in the process of generating electricity in the fuel cell stack 8, and the heat of the hot water in the first heat exchanger 53 is recovered. Accordingly, the efficiency of the fuel cell is also maximized, and the outdoor unit 5 is used to recover the heat of the hot water stored in the heat storage tank 6.

The fuel cells constituting the fuel cell stack 8 include PAFC (phosphate fuel cell), MCFC (molten carbonate fuel cell), SOFC (solid oxide fuel cell), and PEMFC (Proton Exchange Membrane Fuel-cell, solid). Polymer fuel cells). Among them, the Proton Exchange Membrane Fuel-cell (PEMFC) has an operating temperature of 80 degrees Celsius, which is a liquid at atmospheric pressure, unlike other types of fuel cells, such as PAFC at 200 degrees, MCFC at 650 degrees, and SOFC at 1000 degrees. Because it is present as it can be stored in the heat storage tank 6 as it is without the device for temperature management of the water (H 2 O) generated in the fuel cell and can be moved through the inlet pipe 71 and the outlet pipe (72).

As described above, the heat exchanger of the air conditioner according to the present invention has been described with reference to the illustrated drawings. Of course.

That is, the present invention can be applied to a power device that generates a high temperature liquid and a power generating device that generates a high temperature liquid in addition to the fuel cell exemplified, and also in various forms in the means for connecting the first heat exchange device and the heat storage tank. The furnace can be deformed, and of course, modifications such as the use of fins of various forms can also be applied to the method of heat transfer in the heat exchanger.

 A heat storage tank for storing the high temperature liquid configured as described above; An air conditioner comprising a first heat exchanger for supplying hot liquid stored in the heat storage tank to preheat the air, and a second heat exchanger for allowing the preheated air to exchange heat with the refrigerant. The heat exchanger of the heat preheating air in the second heat exchanger after the high temperature liquid of the heat storage tank in the first heat exchanger preheats the outside air when the low-temperature, low-pressure refrigerant heats the second heat exchanger during heating. Since the heat exchange with and has the advantage of increasing the efficiency of the air conditioner.

In addition, the first heat exchanger is provided inside the outdoor unit of the air conditioner, the heat exchanger of the air conditioner, the preheated air passing through the first heat exchanger when the heating is immediately introduced into the second heat exchanger when heating. Heat of the preheated air in the heat exchanger can be transferred to the refrigerant introduced into the outdoor unit from the second heat exchanger to the maximum without being leaked to the outside, thereby maximizing the efficiency of the air conditioner.

In addition, the hot liquid stored in the heat storage tank uses hot water (H 2 O), which is a by-product of the electricity generation in the fuel cell, as a medium, so that the hot water stored in the heat storage tank in the fuel cell has As heat is recovered, the efficiency of the fuel cell is maximized, and there is an advantage of using an outdoor unit installed in the existing unit without the need for a complicated device for recovering heat of hot water stored in the heat storage tank.

In addition, the heat exchanger of the air conditioner, characterized in that the high temperature liquid stored in the heat storage tank is moved to the first heat exchanger by using a water pump has an advantage that can move the high temperature liquid quickly and simply.

In addition, the fuel cell uses a PEMFC (Proton Exchange Membrane Fuel-cell) in the form of a polymer polymer fuel cell that is optimized at an operating temperature of 80 degrees Celsius, so that water (H 2 O) is different from the fuel cell PAFC (phosphate fuel cell), Unlike MCFC (Molten Carbonate Fuel Cell), SOFC (Solid Oxide Fuel Cell, etc.), because it exists as a liquid at atmospheric pressure, the water generated in the fuel cell (H 2 O) is stored in the heat storage tank without any device for temperature control. There is an advantage that it is easy to do and can be easily moved through the inlet and outlet.

Claims (5)

  1. A heat storage tank for storing a high temperature liquid;
    An outdoor unit casing having a space therein;
    First heat exchangers constituting outer portions of the left and right and rear surfaces of the casing;
    A second heat exchanger disposed to face the first heat exchanger inside the first heat exchanger so that the air preheated by the first heat exchanger is heat-exchanged with the refrigerant;
    And a water inlet pipe and a water outlet pipe connected to the first heat exchanger such that a high temperature liquid stored in the heat storage tank flows into the first heat exchanger.
  2. The method of claim 1,
    The heat exchanger of the air conditioner, characterized by further comprising a PEMFC (Proton Exchange Membrane Fuel-cell) in the form of a polymer electrolyte fuel cell to supply high temperature water to the heat storage tank and to generate electricity.
  3. The method according to claim 1 or 2,
    And a water pump for moving the high temperature liquid stored in the heat storage tank to the first heat exchanger.
  4. delete
  5. delete
KR1020040028227A 2004-04-23 2004-04-23 Device of Heat-Change for Air-conditioner KR100624810B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020040028227A KR100624810B1 (en) 2004-04-23 2004-04-23 Device of Heat-Change for Air-conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040028227A KR100624810B1 (en) 2004-04-23 2004-04-23 Device of Heat-Change for Air-conditioner

Publications (2)

Publication Number Publication Date
KR20050102901A KR20050102901A (en) 2005-10-27
KR100624810B1 true KR100624810B1 (en) 2006-09-20

Family

ID=37280971

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020040028227A KR100624810B1 (en) 2004-04-23 2004-04-23 Device of Heat-Change for Air-conditioner

Country Status (1)

Country Link
KR (1) KR100624810B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100802571B1 (en) * 2004-12-13 2008-02-13 엘지전자 주식회사 Air-conditioner using waste-heat from fuel cell

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010065961A (en) * 1999-12-30 2001-07-11 진금수 Heat pump type air conditioner
KR20020056134A (en) * 2000-12-29 2002-07-10 구자홍 Air-conditioner driving by fuel cell
KR20030030553A (en) * 2001-10-11 2003-04-18 (주)세티 Cogeneration system for fuel cell

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010065961A (en) * 1999-12-30 2001-07-11 진금수 Heat pump type air conditioner
KR20020056134A (en) * 2000-12-29 2002-07-10 구자홍 Air-conditioner driving by fuel cell
KR20030030553A (en) * 2001-10-11 2003-04-18 (주)세티 Cogeneration system for fuel cell

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
1020030030553

Also Published As

Publication number Publication date
KR20050102901A (en) 2005-10-27

Similar Documents

Publication Publication Date Title
US7470479B2 (en) Method and apparatus for warming-up fuel cell and fuel cell vehicle
JP2012253034A (en) Solid polymer fuel cell system
JP3722019B2 (en) Fuel cell system
KR101270614B1 (en) Co-generation
CN100375326C (en) Fuel cell system with back-heating exchanger
EP1884648A1 (en) Co-generation unit and control method of the same
JP5368732B2 (en) Evaporative cooling type fuel cell system and cooling method thereof
US7816048B2 (en) Fuel-cell power-generation system and method
KR101246524B1 (en) Polymer electrolyte type fuel cell generation system
US7045229B2 (en) Gas-supplying apparatus, gas-supplying mechanism and gas-supplying process in fuel cell
US7267900B2 (en) Fuel cell system
JP2005100752A (en) Fuel cell system
EP1463135B1 (en) Fuel cell system
JP4131038B2 (en) Fuel cell system
KR20090089859A (en) Fuel cell heat exchange systems and methods
JP2006528827A (en) Operation of low-temperature fuel cell generator
WO2012004985A1 (en) Hot water storage-type hot water supply system and method for operating same
JP2006507639A (en) Thermal energy control in electrochemical fuel cells
JP4994731B2 (en) Fuel cell power generation system
JP2000510637A (en) Method for utilizing enthalpy contained in exhaust gas of low temperature fuel cell and apparatus for implementing the method
CN1789863A (en) Cooling/heating apparatus using waste heat from fuel cell
JP4776391B2 (en) Waste heat utilization system
JP2007522623A (en) Subdivided cooling circuit for fuel cell system
KR100482709B1 (en) Solid polymer fuel cell
US7037610B2 (en) Humidification of reactant streams in fuel cells

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20100630

Year of fee payment: 5

LAPS Lapse due to unpaid annual fee