CN115077119B - Energy-saving air conditioner capable of quickly defrosting without stopping - Google Patents
Energy-saving air conditioner capable of quickly defrosting without stopping Download PDFInfo
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- CN115077119B CN115077119B CN202210776716.5A CN202210776716A CN115077119B CN 115077119 B CN115077119 B CN 115077119B CN 202210776716 A CN202210776716 A CN 202210776716A CN 115077119 B CN115077119 B CN 115077119B
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- 238000010257 thawing Methods 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 30
- 239000007788 liquid Substances 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- 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
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- 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
- F25B39/00—Evaporators; Condensers
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a non-stop quick defrosting energy-saving air conditioner, which comprises a compressor, an indoor heat exchanger, a throttling element, an outdoor heat exchanger and a four-way conversion valve, wherein the outdoor heat exchanger comprises at least three heat exchange units, each heat exchange unit comprises at least three heat exchange pipe groups, and two branch pipes formed by connecting the heat exchange pipe groups in parallel are respectively connected to a total collecting pipe A, a total collecting pipe B, a total collecting pipe C and a total collecting pipe D through control valves; the four-way switching valve is characterized in that an interface of the four-way switching valve is connected with a compressor outlet, an interface of the four-way switching valve is connected with a compressor inlet, an interface of the four-way switching valve is connected with an indoor heat exchanger chamber, a throttling element and a total converging pipe B in sequence, the total converging pipe A is connected to the four-way switching valve interface, a pipeline between the indoor heat exchanger and the throttling element is connected to a pipeline of the total converging pipe C or a pipeline between the compressor outlet and the interface of the four-way switching valve is connected to a pipeline of the total converging pipe D, and a flow control valve is arranged on the pipeline.
Description
Technical Field
The present invention relates to an air conditioner, and more particularly, to a heat pump type air conditioner.
Background
An air conditioner in the prior art mainly comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a throttling element and a corresponding conversion valve group. In winter, because the outdoor air temperature is lower, when the refrigerant evaporates and absorbs heat in the outdoor heat exchanger, the outdoor heat exchanger often frosts to influence the heat absorption, and in order to solve the problem, in the prior art, a reverse operation method is adopted to realize defrosting by converting heating operation into refrigerating operation, and the mode is changed into a heating operation mode after the defrosting is completed.
The defects are that: when the evaporator is frosted, the heating operation state of the evaporator can be stopped, so that the indoor temperature obviously fluctuates.
Disclosure of Invention
The invention aims to provide an energy-saving air conditioner capable of quickly defrosting without stopping a large and medium-sized air conditioner, so that heating work can be continuously performed during defrosting, indoor temperature is not perceived to fluctuate during defrosting, defrosting time is extremely short, energy consumption is extremely low, and the energy-saving air conditioner is an energy-saving air conditioner.
The purpose of the invention is realized in the following way:
the utility model provides an energy-saving air conditioner of quick defrosting of non-stop, includes compressor, indoor heat exchanger, throttling element, outdoor heat exchanger, its characterized in that: the outlet of the compressor is connected with a four-way switching valve, and the four-way switching valve comprises four interfaces, namely an interface I, an interface II, an interface III and an interface IV; when in operation, the four-way switching valve has two working states, and when in heating operation, the first interface is communicated with the second interface, and the third interface is communicated with the fourth interface; during refrigeration operation, the first interface of the four-way switching valve is communicated with the fourth interface, and the second interface is communicated with the third interface; the outlet of the compressor is connected with the first port of the four-way switching valve; the interface III of the four-way switching valve is connected with the inlet of the compressor;
the outdoor heat exchanger comprises at least three heat exchange units, each heat exchange unit comprises at least three heat exchange tube groups, and each heat exchange tube group is formed by connecting a plurality of heat exchange tubes in series; each heat exchange tube group is connected in parallel in the heat exchange unit to form two branch collecting pipes;
the other branch collecting pipe in each heat exchange unit of the outdoor heat exchanger is also divided into two paths, one path is connected to the main collecting pipe B through a control valve, and the other path is connected to the main collecting pipe D through a control valve;
the first port of the four-way switching valve is connected with the second port of the four-way switching valve through the indoor heat exchanger and the throttling element in sequence;
the total converging pipe C is connected to the connecting pipeline between the indoor heat exchanger and the throttling element, and the total converging pipe D is connected to a pipeline between the outlet of the compressor and the first port of the four-way switching valve.
The heat exchange tube groups of all the heat exchange units of the outdoor heat exchanger are provided with shared heat exchange fins.
Further, all heat exchange tube groups in each heat exchange unit of the outdoor heat exchanger are independently provided with shared heat exchange fins in the heat exchange unit.
Further, a flow control valve is provided on a line between the indoor heat exchanger and the throttling element and a line connected to the main collecting pipe C again or on a line between the compressor outlet and the first port of the four-way switching valve and a line connected to the main collecting pipe D again. The opening degree of the flow control valve is adjustable, and the proper opening degree can control the energy for separating the fluidized frost in a proper proportion, so that the optimization of the system operation parameters is facilitated. Once the flow control valve is opened in operation, the flow control valve can be opened without being closed, and the opening and closing of the flow dividing frost shunt is controlled by other control valves, and the control valves can be controlled by an instrument to automatically operate by adopting electromagnetic valves.
The invention has the following operation modes.
Conventional heating operation mode: the four-way switching valve is in a heating operation mode, all heat exchange unit heat exchangers of the outdoor heat exchanger are connected in parallel through the opening and closing part control valve to be used as evaporators to absorb air energy, and the indoor heat exchanger is used as a condenser to output hot air.
Normal cooling mode of operation: the four-way conversion valve is in a refrigerating operation mode, the indoor heat exchanger is used as an evaporator to absorb indoor air energy, and the heat exchangers of all heat exchange units of the outdoor heat exchanger are connected in parallel through the opening and closing part control valve to be used as a condenser to emit heat energy outwards.
Heating defrosting operation mode: when the four-way switching valve is in a heating operation mode, a part of refrigerant is shunted from the high-temperature high-pressure refrigerant at the outlet of the compressor by opening and closing a related control valve to flow through one heat exchange unit separated from the outdoor heat exchanger, the frost on the fins of the corresponding area of the heat exchange unit is quickly heated and melted to be removed, and the rest heat exchange units of the outdoor heat exchanger still serve as an evaporator to absorb the heat energy of air. By opening and closing the related control valve, one heat exchange unit among n heat exchange units of the outdoor heat exchanger is frosted, and most of the rest heat exchange units still serve as heat energy of air absorbed by the evaporator, and the refrigerant of the heat exchange units is compressed by the compressor to generate high temperature, so that hot air is output without interruption during defrosting. The value of n of the present invention is at least equal to 3 and is not limited to 3; when n is equal to 3, 2/3 or 67% of heat exchange units still serve as evaporators to absorb heat energy of air when one heat exchange unit is turned into frost, so that at least the temperature of hot air output by the system is not obviously reduced, the temperature fluctuation is not obvious, the value of n is less than 3, the temperature of hot air output by the system is obviously reduced, and the temperature fluctuation is large; the larger the value of n is, the better the effect is, the larger proportion of heat exchange units still serve as evaporators to absorb heat energy of air when defrosting is carried out, for example, n is equal to 6, 5/6 of heat exchange units, namely 83%, are still served as evaporators to absorb heat energy of air when defrosting is carried out on one heat exchange unit in turn, the influence of defrosting on output hot air is almost negligible, the influence on the energy efficiency ratio of a system is also negligible, and the influence on the energy efficiency ratio of the system is great when defrosting in the prior art due to interruption of output hot air. However, the number of n is too large, the number of control valves to be installed is too large, and the number of n is 6 or 5; in a very powerful system, the number of heat exchange tube groups included in each heat exchange unit is increased from 3 to 6 or even more than 20, and the value of n does not need to be excessively increased.
The distance between any heat exchange unit in the defrosting cycle and frosting heat transfer on the heat exchange fin of the area where the heat exchange unit is heated is within half of the pipe distance on average, and the heat transfer is efficient in metal, so that the heat transfer distance is short, the heat is fast, the defrosting time is extremely short, and the total energy consumption of defrosting is low. The defrosting control is simple, the defrosting is automatic if the defrosting is set to be slightly frosted, the defrosting time is shorter, and the defrosting time of each heat exchange unit only needs 2 to 3 seconds.
The beneficial effects of the invention are that: can defrost very fast, the defrosting energy consumption is low, and the influence on outputting hot air is extremely low when defrosting, and outputting hot air is not interrupted, and the indoor temperature is not reduced. In addition, the manufacturing process is simple and easy, the outdoor heat exchanger only needs one fan, one set of heat exchanger shell and one air path system, and the cost is low.
Drawings
Fig. 1 is a schematic diagram of the operation of a first construction of the present invention.
Fig. 2 is a schematic diagram of the operation of a second construction of the present invention.
In the figure, a compressor 1, an indoor heat exchanger 2, a throttling element 3, an outdoor heat exchanger 4, a heat exchange fin 5, an interface a, an interface b, an interface c, an interface d, 101, 102, 103, 201, 202, 203, 301, 302 and 303 heat exchange tube groups, an F1 control valve I, an F2 control valve II, an F3 control valve III, an F4 control valve IV, an F5 control valve five, an F6 control valve six, an F7 control valve seven, an F8 control valve eight, an F9 control valve nine, an F10 control valve ten, an F11 control valve eleven, an F12 control valve twelve, an F0 flow control valve and M1, M2, M3, N1, N2 and N3 branch collecting pipes.
Detailed Description
Example 1
As shown in fig. 1, the energy-saving air conditioner capable of quickly defrosting without stopping comprises a compressor 1, an indoor heat exchanger 2, a throttling element 3 and an outdoor heat exchanger 4, wherein an outlet of the compressor 1 is connected with a four-way switching valve, and the four-way switching valve comprises four interfaces, namely an interface A, an interface B, an interface three c and an interface four d; when in operation, the four-way switching valve has two working states, and when in heating operation, the interface A of the four-way switching valve is communicated with the interface B, and the interface three is communicated with the interface four d; during refrigeration operation, the first port a of the four-way switching valve is communicated with the fourth port d, and the second port b of the four-way switching valve is communicated with the third port c of the four-way switching valve; the outlet of the compressor 1 is connected with an interface a of the four-way switching valve; the interface three c of the four-way switching valve is connected with the inlet of the compressor 1;
the outdoor heat exchanger 4 comprises three heat exchange units, wherein each heat exchange unit comprises three heat exchange tube groups which are respectively marked as 101, 102, 103, 201, 202, 203, 301, 302 and 303; each heat exchange tube group is formed by connecting a plurality of heat exchange tubes in series; each heat exchange tube group is connected in parallel in the heat exchange unit to form two branch collecting pipes; each heat exchange tube group is formed by connecting a plurality of heat exchange tubes in series. The heat exchange units are all connected in parallel to form two branch collecting pipes, a branch collecting pipe M1 and a branch collecting pipe N1 corresponding to a first heat exchange unit, a branch collecting pipe M2 and a branch collecting pipe N2 corresponding to a second heat exchange unit, a branch collecting pipe M3 and a branch collecting pipe N3 corresponding to a third heat exchange unit, and the heat exchange units of the three heat exchange units are provided with a common heat exchange fin 5;
the branch collecting pipe M1 is connected with the main collecting pipe B through a control valve F1, the branch collecting pipe N1 is connected with the main collecting pipe A through a control valve F2,
the branch collecting pipe M2 is connected with the main collecting pipe B through a control valve five F5, the branch collecting pipe N2 is connected with the main collecting pipe A through a control valve six F6,
the branch collecting pipe M3 is connected with the main collecting pipe B through a control valve nine F9, the branch collecting pipe N3 is connected with the main collecting pipe A through a control valve ten F10,
the branch collecting pipe M1 is connected with the main collecting pipe D through a control valve three F3, the branch collecting pipe N1 is connected with the main collecting pipe C through a control valve four F4,
the branch collecting pipe M2 is connected with the main collecting pipe D through a control valve seven F7, the branch collecting pipe N2 is connected with the main collecting pipe C through a control valve eight F8,
the branch pipe M3 is connected with the main pipe D through the control valve eleven F11, the branch pipe N3 is connected with the main pipe C through the control valve twelve F12,
the total converging pipe A is connected with the interface four d of the four-way switching valve, and the interface two B of the four-way switching valve is connected with the total converging pipe B through the indoor heat exchanger 2 and the throttling element 3 in sequence;
a flow control valve F0 is provided in the line between the indoor heat exchanger 2 and the throttling element 3, which is in turn connected to said main collecting pipe C. The opening degree of the flow control valve is adjustable, and the proper opening degree can control the energy for separating the fluidized frost in a proper proportion, so that the optimization of the system operation parameters is facilitated. Once the flow control valve is opened in operation, the flow control valve can be opened without being closed, and the opening and closing of the flow dividing frost shunt is controlled by other control valves, and the control valves can be controlled by an instrument to automatically operate by adopting electromagnetic valves.
All heat exchange units are provided with a common heat exchange fin 5.
The present embodiment has several modes of operation as follows:
in the operation mode, the four-way switching valve interface a and the interface B in the four-way switching valve in the figure 1 are communicated, the four-way switching valve interface three c and the interface four d are communicated, the control valve F1, the control valve F2, the control valve F5, the control valve F6, the control valve nine F9 and the control valve ten F10 are opened, the control valve F3, the control valve F4, the control valve seven F7, the control valve eight F8, the control valve eleven F11 and the control valve twelve F12 are closed, at the moment, the heat exchange tube groups of the three heat exchange units of the outdoor heat exchanger 4 are all connected in parallel to the total inlet and outlet tubes of the outdoor heat exchanger 4, namely the total collector tube A and the total collector tube B, act as an evaporator, after absorbing air energy, high-temperature high-pressure air state refrigerant enters the inlet of the compressor 1 through the four-way switching valve interface four d and the interface three c, the high-temperature high-pressure air state refrigerant enters the indoor heat exchanger 2 acting as a condenser through the four-way switching valve interface one a and the interface two B, and the refrigerant is condensed into liquid or gas-liquid mixed state air state at the same time enters the evaporator 4 to act as the outdoor heat exchanger to absorb heat energy again. The flow control valve F0 is normally open without any effect on the operating mode.
In the second normal refrigeration operation mode, the first port a and the fourth port d of the four-way switching valve in fig. 1 are connected, the second port B and the third port c of the four-way switching valve are connected, the first control valve F1, the second control valve F2, the fifth control valve F5, the sixth control valve F6, the ninth control valve F9 and the tenth control valve F10 are opened, the third control valve F3, the fourth control valve F4, the seventh control valve F7, the eighth control valve F8, the eleventh control valve F11 and the twelfth control valve F12 are closed, at the moment, all heat exchange tube sets of the three heat exchange units of the outdoor heat exchanger 4 are connected in parallel to the total inlet and outlet tubes of the outdoor heat exchanger 4, namely the total collecting tube A and the total collecting tube B, the refrigerant after releasing energy to the outside enters the indoor heat exchanger 2 through the total collecting tube B and the throttling element 3, at the moment, the indoor heat exchanger 2 serving as an evaporator absorbs indoor air energy to reduce the indoor temperature, the refrigerant enters the inlet of the four-way switching valve ports 1 through the second port B and the third port c in sequence after the temperature is increased, the outlet of the compressor 1 enters the inlet of the compressor 1 through the first port a and the fourth port d, the heat exchange tube enters the fourth port d and the working cycle is released to the outdoor heat exchanger 4. The normally open flow control valve F0 has no effect on the second operating mode.
And the four-way switching valve is in the same state as the four-way switching valve in the first operation mode, and the opening of the flow control valve F0 is permanently opened and is not closed after the opening is adjusted to the optimal COP value of the system. The first step of defrosting is performed alternately, the first control valve F1 and the second control valve F2 are closed, the fifth control valve F5, the sixth control valve F6, the ninth control valve F9 and the tenth control valve F10 are opened, the third control valve F3 and the fourth control valve F4 are opened, the seventh control valve F7, the eighth control valve F8, the eleventh control valve F11 and the twelfth control valve F12 are closed, the second heat exchange unit and the third heat exchange unit of the outdoor heat exchanger 4 are connected in parallel to the main inlet and outlet pipes of the outdoor heat exchanger 4, namely the main collecting pipe A and the main collecting pipe B, act as evaporators, the air energy is absorbed and then enters the inlet of the compressor 1 through the interface four d and the interface three c of the four-way switching valve, the high-temperature high-pressure gaseous refrigerant at the outlet of the compressor 1 enters the indoor heat exchanger 2 acting as condensers through the interface one a and the interface two B of the four-way switching valve, and the refrigerant is condensed into liquid or gas-liquid mixed state to enter the outdoor heat exchanger 4 acting as evaporators through the throttling element 3 at the same time of outputting hot air to complete a heating work cycle of the main circuit. The first heat exchange unit is connected to the total converging pipe C and the total converging pipe D in parallel; a part of the high-temperature and high-pressure gaseous refrigerant at the outlet of the compressor 1 is split and flows to a pipeline between the indoor heat exchanger 2 and the throttling element 3 through the total converging pipe D, the control valve three F3, the first heat exchange unit, the control valve four F4, the total converging pipe C and the flow control valve F0, is mixed with the main loop refrigerant, and then flows and runs along with the main loop refrigerant. When the high-temperature high-pressure gaseous refrigerant flows through the first heat exchange unit, the frosting on the heat exchange fin 5 of the area where the high-temperature high-pressure gaseous refrigerant belongs is quickly melted and removed. The unused heat energy in the defrosting process is rapidly transferred to the refrigerant in the adjacent heat exchange units through the common heat exchange fins 5, so that the overall temperature of the evaporator refrigerant is beneficial, and the loss of heat energy taken away along with the air flow of the fan is reduced.
In the second step of defrosting in turn, the control valve five F5 and the control valve six F6 are closed, the control valve one F1, the control valve two F2, the control valve nine F9 and the control valve ten F10 are opened, the control valve seven F7 and the control valve eight F8 are opened, the control valve three F3, the control valve four F4, the control valve eleven F11 and the control valve twelve F12 are closed, at the moment, the first heat exchange unit and the third heat exchange unit of the outdoor heat exchanger 4 are connected in parallel to the total inlet and outlet pipes of the outdoor heat exchanger 4, namely the total converging pipe A and the total converging pipe B, act as evaporators, after absorbing air energy, the air energy enters the inlet of the compressor 1 through the four-way switching valve interface four d and the interface three c, the high-temperature high-pressure gaseous refrigerant at the outlet of the compressor 1 enters the indoor heat exchanger 2 acting as condensers through the four-way switching valve interface one a and the interface two B, and the refrigerant is condensed into liquid or gas-liquid mixed state through the throttling element 3 to enter the outdoor heat exchanger 4 acting as evaporators to complete a heating work cycle of a main circuit. At this time, the second heat exchange unit is connected in parallel to the header pipe C and the header pipe D, and a part of the high-temperature and high-pressure gaseous refrigerant at the outlet of the compressor 1 is split and flows through the header pipe D, the control valve seven F7, the second heat exchange unit, the control valve eight F8, the header pipe C and the flow control valve F0 to the pipeline between the indoor heat exchanger 2 and the throttling element 3, is mixed with the main circuit refrigerant, and then flows and runs along with the main circuit refrigerant. When the high-temperature high-pressure gaseous refrigerant flows through the second heat exchange unit, the frosting on the heat exchange fin 5 of the area where the high-temperature high-pressure gaseous refrigerant belongs is quickly melted and removed. The unused heat energy in the defrosting process is rapidly transferred to the refrigerant in the adjacent heat exchange unit through the common heat exchange fin 5, which is beneficial to the overall temperature of the evaporator refrigerant and reduces heat energy loss.
And in the third step of defrosting in turn, when the high-temperature high-pressure gaseous refrigerant flows through the third heat exchange unit, the frosting on the heat exchange fin 5 of the area where the high-temperature high-pressure gaseous refrigerant belongs is quickly melted and removed, and the process and the principle are not repeated.
The heat transfer distance of any heat exchange unit in the defrosting cycle to the heat exchange fin 5 of the area where the heat exchange unit belongs is within a pipe distance when being heated, the heat transfer distance is high-efficiency heat transfer in the metal, the heat transfer distance is extremely short, the heat is rapid, the defrosting time is extremely short, and the total energy consumption of defrosting is very low. Since during defrosting, when any one heat exchange unit is subjected to heat defrosting, other heat exchange units are still used as evaporators, and the indoor heat exchanger 2 outputs hot air continuously.
The flow control valve F0 can control the flow of the refrigerant for separating the frost when the defrosting operation is performed, the energy efficiency ratio is reduced due to the overlarge flow, the energy shortage time of the defrosting is prolonged due to the overlarge flow, the disadvantage is also caused, and the energy efficiency ratio is optimal due to the proper flow.
Example 2
As shown in fig. 2, the non-stop rapid defrosting energy-saving air conditioner with the second structure,
which differs from embodiment 1 in that all heat exchange tube groups in the respective heat exchange units of the outdoor heat exchanger 4 are independently provided with a common heat exchange fin 5 in the unit. By arranging the common heat exchange fins 5 in this way, when one heat exchange unit is used for defrosting, the heat exchange fins 5 of the adjacent heat exchange unit are not heated to influence the heat energy absorbed by the air, otherwise, the temperature of the partial areas of the heat exchange fins 5 of the adjacent heat exchange unit is higher than the temperature of the air, and the heat exchange fins 5 of the areas cannot absorb the heat energy of the air because the heat energy of the air can only be conducted to objects with lower temperature than the heat energy of the air. Example 2 has a further improvement in energy efficiency ratio over example 1. Example 1 has the advantage of being close to the traditional manufacturing method with little change.
In patent implementation, in some cases, a gas-liquid separator, a liquid storage tank and the like are needed to be added, the throttle elements in the prior art are various, the detailed expression is not carried out in the drawings, and the increase and decrease of the structures are all within the protection scope of the patent.
Claims (1)
1. The utility model provides an energy-saving air conditioner of quick defrosting of non-stop, includes compressor, indoor heat exchanger, throttling element, outdoor heat exchanger, its characterized in that: the outlet of the compressor is connected with a four-way switching valve, and the four-way switching valve comprises four interfaces, namely an interface I, an interface II, an interface III and an interface IV; when in operation, the four-way switching valve has two working states, and when in heating operation, the first interface is communicated with the second interface, and the third interface is communicated with the fourth interface; during refrigeration operation, the first interface of the four-way switching valve is communicated with the fourth interface, and the second interface is communicated with the third interface; the outlet of the compressor is connected with the first port of the four-way switching valve; the interface III of the four-way switching valve is connected with the inlet of the compressor;
the outdoor heat exchanger comprises at least three heat exchange units, each heat exchange unit comprises at least three heat exchange tube groups, and each heat exchange tube group is formed by connecting a plurality of heat exchange tubes in series; each heat exchange tube group is connected in parallel in the heat exchange unit to form two branch collecting pipes;
the other branch collecting pipe in each heat exchange unit of the outdoor heat exchanger is also divided into two paths, one path is connected to the main collecting pipe B through a control valve, and the other path is connected to the main collecting pipe D through a control valve;
the first port of the four-way switching valve is connected with the second port of the four-way switching valve through the indoor heat exchanger and the throttling element in sequence;
the total converging pipe C is connected to a connecting pipeline of the indoor heat exchanger and the throttling element, and the total converging pipe D is connected to a pipeline between an outlet of the compressor and a first port of the four-way switching valve;
a flow control valve is arranged on a pipeline between the indoor heat exchanger and the throttling element and a pipeline of the total collecting pipe C or a pipeline between the outlet of the compressor and the first port of the four-way switching valve and a pipeline of the total collecting pipe D;
all heat exchange units of the outdoor heat exchanger are provided with shared heat exchange fins.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210776716.5A CN115077119B (en) | 2022-07-01 | 2022-07-01 | Energy-saving air conditioner capable of quickly defrosting without stopping |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210776716.5A CN115077119B (en) | 2022-07-01 | 2022-07-01 | Energy-saving air conditioner capable of quickly defrosting without stopping |
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| CN115077119A CN115077119A (en) | 2022-09-20 |
| CN115077119B true CN115077119B (en) | 2024-04-09 |
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| CN115235141B (en) * | 2022-07-14 | 2023-10-31 | 黄永年 | Efficient defrosting heat pump type small air conditioner |
Citations (11)
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| CN109539762A (en) * | 2018-11-29 | 2019-03-29 | 河南中瑞制冷科技有限公司 | A kind of composition open and close formula circulating heat pump drying system |
| CN110553328A (en) * | 2019-09-09 | 2019-12-10 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN211977301U (en) * | 2019-12-13 | 2020-11-20 | 广东志高暖通设备股份有限公司 | Air conditioning system with function of defrosting without stopping machine |
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2022
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| CN101706186A (en) * | 2009-05-25 | 2010-05-12 | 广东志高空调有限公司 | Defrosting device of air heat energy heat pump water heater |
| JP2011195021A (en) * | 2010-03-19 | 2011-10-06 | Denso Corp | Heat pump device for vehicle |
| WO2015059792A1 (en) * | 2013-10-24 | 2015-04-30 | 三菱電機株式会社 | Air conditioner |
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| CN108895584A (en) * | 2018-07-19 | 2018-11-27 | 广东志高暖通设备股份有限公司 | A kind of multiple heat pump circulating device that not shutting down defrost and promote heating capacity |
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| CN110553328A (en) * | 2019-09-09 | 2019-12-10 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN211977301U (en) * | 2019-12-13 | 2020-11-20 | 广东志高暖通设备股份有限公司 | Air conditioning system with function of defrosting without stopping machine |
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| CN115077119A (en) | 2022-09-20 |
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