CN104266407A - Air source heat pump unit - Google Patents
Air source heat pump unit Download PDFInfo
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- CN104266407A CN104266407A CN201410562204.4A CN201410562204A CN104266407A CN 104266407 A CN104266407 A CN 104266407A CN 201410562204 A CN201410562204 A CN 201410562204A CN 104266407 A CN104266407 A CN 104266407A
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- Prior art keywords
- valve
- valve port
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- pipe
- shell
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
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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)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses an air source heat pump unit. The air source heat pump unit comprises a compressor, a first four-way reversing valve, a second four-way reversing valve, a finned heat exchanger, a first shell and tube exchanger, a second shell and tube exchanger, a refrigerating one-way valve, a refrigerating throttling element, a heating one-way valve, a heating throttling element and a control valve; the first four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port; the second four-way valve comprises a fifth valve port, a sixth valve port, a seventh valve port and an eighth valve port; the first valve port is connected with an exhaust opening; the second valve port is connected with the fifth valve port; the third valve port and the seventh valve port are connected with an air suction port; the fourth valve port is connected with the fifth valve port of the second shell and tube heat exchanger; the sixth valve port is connected with a first pipe orifice of the finned heat exchanger; the eighth valve port is connected with a third pipe orifice of the first shell and tube type heat exchanger. According to the air source heat pump unit, a cold source, a heat source or domestic hot water is provided for a utilization side in a single mode and meanwhile the cold source and the heat source or the domestic hot water can be provided for the utilization side, and the unit efficiency is improved.
Description
Technical field
The present invention relates to refrigerating field, especially relate to a kind of net for air-source heat pump units.
Background technology
Existing net for air-source heat pump units can not provide low-temperature receiver and thermal source simultaneously, and all needs unwanted heat or cold to be discharged in air when providing low-temperature receiver or thermal source demand, causes waste, makes the efficiency of net for air-source heat pump units low.
Summary of the invention
The present invention is intended to solve the technical problem existed in prior art.For this reason, the object of the invention is to propose a kind of net for air-source heat pump units, low-temperature receiver and thermal source or domestic hot-water can be provided to use side simultaneously.
According to the net for air-source heat pump units of the embodiment of the present invention, comprising: compressor, described compressor has exhaust outlet and air entry; First four-way change-over valve, described first four-way change-over valve has first to fourth valve port, and described first valve port is connected with described exhaust outlet, and described 3rd valve port is connected with described air entry; Second four-way change-over valve, described second four-way change-over valve has the 5th to the 8th valve port, and described 5th valve port is connected with described second valve port, and described 7th valve port is connected with described air entry; Finned heat exchanger, described finned heat exchanger has the first to the second mouth of pipe, described first mouth of pipe is connected with described 6th valve port, described second mouth of pipe is respectively equipped with refrigeration check valve and heats restricting element, the described restricting element other end that heats is connected with control valve, and described control valve is connected by common line with the outlet of described refrigeration check valve; First shell and tube exchanger, described first shell and tube exchanger has the 3rd to the 4th mouth of pipe, and described 3rd mouth of pipe is connected with described 8th valve port, and described 4th mouth of pipe is connected with described common line by refrigeration restricting element; Second shell and tube exchanger, described second shell and tube exchanger has the 5th to the 6th mouth of pipe, and described 5th mouth of pipe is connected with described 4th valve port, and described 6th mouth of pipe is connected with described common line by heating check valve.
According to the net for air-source heat pump units of the embodiment of the present invention, low-temperature receiver and thermal source or domestic hot-water can be provided to use side simultaneously, low-temperature receiver and thermal source are all utilized, improve the efficiency of net for air-source heat pump units, also can carry out the utilization of single low-temperature receiver or thermal source simultaneously, and can by providing the pattern seamless switching of low-temperature receiver and thermal source for providing the pattern of single low-temperature receiver or thermal source simultaneously.
In addition, according to net for air-source heat pump units of the present invention, also there is following additional technical feature:
Alternatively, described control valve is magnetic valve.
Alternatively, described refrigeration restricting element is electric expansion valve.
Alternatively, heating restricting element described in is electric expansion valve or heating power expansion valve.
Particularly, described compressor is closed or semi-hermetic refrigerating compressor unit.
Alternatively, described compressor is helical-lobe compressor.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is for being in schematic diagram when providing low-temperature receiver, thermal source or domestic hot-water's output mode simultaneously according to the net for air-source heat pump units of the embodiment of the present invention;
Fig. 2 is for being in schematic diagram when meeting low-temperature receiver demand but also need the work shaping modes continuing to provide thermal source or domestic hot-water according to the net for air-source heat pump units of the embodiment of the present invention;
Fig. 3 is for being in schematic diagram when meeting thermal source demand but also need the work shaping modes continuing to provide low-temperature receiver according to the net for air-source heat pump units of the embodiment of the present invention;
Reference numeral:
Net for air-source heat pump units 1000, compressor 10, exhaust outlet b, air entry a,
First four-way change-over valve 20, first valve port c, the second valve port e, the 3rd valve port d, the 4th valve port f,
Second four-way change-over valve 30, the 5th valve port g, the 6th valve port i, the 7th valve port h, the 8th valve port j,
Finned heat exchanger 40, first mouth of pipe k, the second mouth of pipe l,
First shell and tube exchanger 50, the 3rd mouth of pipe m, the 4th mouth of pipe n,
Second shell and tube exchanger 70, the 5th mouth of pipe o, the 6th mouth of pipe p,
Refrigeration restricting element 60, refrigeration check valve 110,
Heat restricting element 100, heat check valve 80,
Common line 120, control valve 90,
First row mouth of a river q, second row mouth of a river r,
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Describe the net for air-source heat pump units 1000 according to the embodiment of the present invention below with reference to Fig. 1-Fig. 3, net for air-source heat pump units 1000 is described in detail.
As shown in Figure 1-Figure 3, according to the net for air-source heat pump units 1000 of the embodiment of the present invention, comprise: compressor 10, first four-way change-over valve 20, second four-way change-over valve 30, finned heat exchanger 40, first shell and tube exchanger 50, second shell and tube exchanger 70, refrigeration restricting element 60, refrigeration check valve 110, heat restricting element 100, heat check valve 80 and control valve 90, wherein, compressor 10 has air entry a and exhaust outlet b, particularly, compressor 10 is closed or semi-hermetic refrigerating compressor unit.Alternatively, compressor 10 is screw compressor, it should be noted that, the structure and working principle etc. of compressor 10 is prior art, is just not described in detail here.
First four-way change-over valve 20 has the first valve port c, the second valve port e, the 3rd valve port d, the 4th valve port f, first valve port c is connected with exhaust outlet b, 3rd valve port d is connected with air entry a, one of them conducting wherein in the first valve port c and the second valve port e and the 4th valve port f, another conducting in the 3rd valve port d and the second valve port e and the 4th valve port f.
Second four-way change-over valve 30 has the 5th valve port g, the 6th valve port i, the 7th valve port h, the 8th valve port j, 5th valve port g is connected with the second valve port e, 7th valve port h is connected with air entry a, one of them conducting wherein in the 5th valve port g and the 6th valve port i and the 8th valve port j, another conducting in the 7th valve port h and the 6th valve port i and the 8th valve port j.
Finned heat exchanger 40 has the first mouth of pipe k, the second mouth of pipe l, first mouth of pipe k is connected with the 6th valve port i, second mouth of pipe l is respectively equipped with refrigeration check valve 110 and heats restricting element 100, heat restricting element 100 other end to be connected with control valve 90, control valve 90 is connected by common line 120 with the outlet of refrigeration check valve 110; Specifically, the entrance of refrigeration check valve 110 is connected with the second mouth of pipe l, the outlet of refrigeration check valve 110 is connected with common line 120, the two ends heating restricting element 100 are connected with control valve 90 with the second mouth of pipe l respectively, control valve 90 other end is connected with common line 120, that is, heats restricting element 100 and control valve 90 is connected, then in parallel with refrigeration check valve 110, refrigeration check valve 110 is from the second mouth of pipe l to one-way conduction on the direction of common line 120.Particularly, control valve 90 has open mode and closed condition, and alternatively, control valve 90 is magnetic valve.
First shell and tube exchanger 50 has the 3rd mouth of pipe m, the 4th mouth of pipe n, and the 3rd mouth of pipe m is connected with the 8th valve port j, and the 4th mouth of pipe n is connected with common line 120 by refrigeration restricting element 60.Specifically, the outlet of refrigeration restricting element 60 is connected with the 4th mouth of pipe n, and the entrance of refrigeration restricting element 60 is connected with common line 120.Particularly, the restricting element 60 that freezes has open mode and closed condition.Alternatively, the restricting element 60 that freezes is electric expansion valve.Wherein, the first shell and tube exchanger 50 is provided with first row mouth of a river q, and the structure of the first shell and tube exchanger 50 and operation principle etc. are prior art, are just not described in detail here.
Second shell and tube exchanger 70 has the 5th mouth of pipe o, the 6th mouth of pipe p, 5th mouth of pipe o is connected with the 4th valve port f, 6th mouth of pipe p is connected with common line 120 by heating check valve 80, specifically, the entrance heating check valve 80 is connected with the 6th mouth of pipe p, the outlet heating check valve 80 is connected with common line 120, heats check valve 80 from the 6th mouth of pipe p to one-way conduction on the direction of common line 120.Wherein, the second shell and tube exchanger 70 is provided with second row mouth of a river r, and the structure of the second shell and tube exchanger 70 and operation principle etc. are prior art, are just not described in detail here.
As shown in Figure 1, when net for air-source heat pump units 1000 be in low-temperature receiver, thermal source or domestic hot-water's output mode are provided simultaneously time, first valve port c of the first four-way change-over valve 20 and the 4th valve port f conducting and the second valve port e and the 3rd valve port d conducting, 5th valve port g of the second four-way change-over valve 30 and the 6th valve port i conducting and the 7th valve port h and the 8th valve port j conducting, control valve 90 is in closed condition, and refrigeration restricting element 60 is in open mode.Now as illustrated by the arrows in fig. 1, the gas coolant of the HTHP of discharging from the exhaust outlet b of compressor 10 enters in the second shell and tube exchanger 70 by the first four-way change-over valve 20, refrigerant becomes liquid after release heat in the second shell and tube exchanger 70, liquid coolant flow through heat check valve 80 enter into refrigeration restricting element 60 in, refrigerant enters in the first shell and tube exchanger 50 after reducing pressure by regulating flow in refrigeration restricting element 60, refrigerant becomes gas after absorbing heat in the first shell and tube exchanger 50 and evaporating, gas coolant gets back to the air entry a of compressor 10 by the second four-way change-over valve 30, sucked by compressor 10, refrigerant is discharged after second compression in compressor 10 again, form kind of refrigeration cycle.Circulating refrigerant is without finned heat exchanger 40, and in finned heat exchanger 40, refrigerant gets back to the air entry a of compressor 10 through the second four-way change-over valve 30, first four-way change-over valve 20, is sucked, thus participate in kind of refrigeration cycle by compressor 10.
Due to refrigerant release heat in the second shell and tube exchanger 70, thus thermal source or domestic hot-water can be provided at the r place, the second row mouth of a river of the second shell and tube exchanger 70 to use side, when using side to be set as domestic hot-water's demand, net for air-source heat pump units 1000 can improve the temperature value at the r place, the second row mouth of a river of the second shell and tube exchanger 70 automatically.
Because refrigerant absorbs heat evaporation in the first shell and tube exchanger 50, thus low-temperature receiver can be provided at the q place, the first row mouth of a river of the first shell and tube exchanger 50 to use side.Net for air-source heat pump units 1000 can provide thermal source and low-temperature receiver simultaneously thus, and thermal source and low-temperature receiver can be utilized simultaneously, and without the need to release heat in finned heat exchanger or cold, the using energy source of net for air-source heat pump units 1000 reaches maximum.
As shown in Figure 2, when net for air-source heat pump units 1000 be in meet low-temperature receiver demand but also need the work shaping modes continuing to provide thermal source or domestic hot-water time, first valve port c of the first four-way change-over valve 20 and the 4th valve port f conducting and the second valve port e and the 3rd valve port d conducting, 5th valve port g of the second four-way change-over valve 30 and the 8th valve port j conducting and the 7th valve port h and the 6th valve port i conducting, control valve 90 is in opening, and refrigeration restricting element 60 is in closed condition.Now as denoted by the arrows in fig. 2, the gas coolant of the HTHP of discharging from the exhaust outlet b of compressor 10 enters in the second shell and tube exchanger 70 by the first four-way change-over valve 20, refrigerant becomes liquid after release heat in the second shell and tube exchanger 70, liquid coolant flows through and heats check valve 80, control valve 90 enters into and heats in restricting element 100, refrigerant enters into after reducing pressure by regulating flow in finned heat exchanger 40 heating in restricting element 100, refrigerant becomes gas after absorbing heat in finned heat exchanger 40 and evaporating, gas coolant gets back to the air entry a of compressor 10 by the second four-way change-over valve 30, sucked by compressor 10, refrigerant is discharged after second compression in compressor 10 again, form heat pump cycle.Circulating refrigerant gets back to the air entry a of compressor 10 through the second four-way change-over valve 30, first four-way change-over valve 20 without refrigerant in the first shell and tube exchanger 50, first shell and tube exchanger 50, sucked, thus participate in heat pump cycle by compressor 10.
Due to refrigerant release heat in the second shell and tube exchanger 70, thus thermal source or domestic hot-water can be provided at the r place, the second row mouth of a river of the second shell and tube exchanger 70 to use side, when using side to be set as domestic hot-water's demand, net for air-source heat pump units 1000 can improve the temperature value at the r place, the second row mouth of a river of the second shell and tube exchanger 70 automatically.
As shown in Figure 3, when net for air-source heat pump units 1000 be in meet thermal source demand but also need the work shaping modes continuing to provide low-temperature receiver time, first valve port c of the first four-way change-over valve 20 and the second valve port e conducting and the 3rd valve port d and the 4th valve port f conducting, 5th valve port g of the second four-way change-over valve 30 and the 6th valve port i conducting and the 7th valve port h and the 8th valve port j conducting, control valve 90 is in closed condition, and refrigeration restricting element 60 is in opening.Now as indicated by the arrows in fig. 3, the gas coolant of the HTHP of discharging from the exhaust outlet b of compressor 10 is by the first four-way change-over valve 20, second four-way change-over valve 30 enters in finned heat exchanger 40, refrigerant becomes liquid after release heat in finned heat exchanger 40, liquid coolant flows through refrigeration check valve 110 and enters in refrigeration restricting element 60, refrigerant enters in the first shell and tube exchanger 50 after reducing pressure by regulating flow in refrigeration restricting element 60, refrigerant becomes gas after absorbing heat in the first shell and tube exchanger 50 and evaporating, gas coolant gets back to the air entry a of compressor 10 by the second four-way change-over valve 30, sucked by compressor 10, refrigerant is discharged after second compression in compressor 10 again, form kind of refrigeration cycle.Circulating refrigerant gets back to the air entry a of compressor 10 through the first four-way change-over valve 20 without refrigerant in the second shell and tube exchanger 70, second shell and tube exchanger 70, sucked, thus participate in kind of refrigeration cycle by compressor 10.
Because refrigerant absorbs heat evaporation in the first shell and tube exchanger 50, thus low-temperature receiver can be provided at the q place, the first row mouth of a river of the first shell and tube exchanger 50 to use side.
According to the net for air-source heat pump units 1000 of the embodiment of the present invention, by being provided with finned heat exchanger 40, first cross valve 20, second cross valve 30, first shell and tube exchanger 50 and the first shell and tube exchanger 70, thus low-temperature receiver and thermal source or domestic hot-water not only can be provided to use side simultaneously, low-temperature receiver and thermal source are all utilized, improve the efficiency of net for air-source heat pump units 1000, also can carry out the utilization of single low-temperature receiver or thermal source simultaneously, and can by providing the pattern seamless switching of low-temperature receiver and thermal source for providing the pattern of single low-temperature receiver or thermal source simultaneously.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (6)
1. a net for air-source heat pump units, is characterized in that, comprising:
Compressor, described compressor has air entry and exhaust outlet;
First four-way change-over valve, described first four-way change-over valve has first to fourth valve port, and described first valve port is connected with described exhaust outlet, and described 3rd valve port is connected with described air entry;
Second four-way change-over valve, described second four-way change-over valve has the 5th to the 8th valve port, and described 5th valve port is connected with described second valve port, and described 7th valve port is connected with described air entry;
Finned heat exchanger, described finned heat exchanger has the first to the second mouth of pipe, described first mouth of pipe is connected with described 6th valve port, described second mouth of pipe is respectively equipped with refrigeration check valve and heats restricting element, the described other end heating restricting element is connected with control valve, and described control valve is connected by common line with the outlet of described refrigeration check valve;
First shell and tube exchanger, described first shell and tube exchanger has the 3rd to the 4th mouth of pipe, and described 3rd mouth of pipe is connected with described 8th valve port, and described 4th mouth of pipe is connected with described common line by refrigeration restricting element;
Second shell and tube exchanger, described second shell and tube exchanger has the 5th to the 6th mouth of pipe, and described 5th mouth of pipe is connected with described 4th valve port, and described 6th mouth of pipe is connected with described common line by heating check valve.
2. net for air-source heat pump units according to claim 1, is characterized in that, described control valve is magnetic valve.
3. net for air-source heat pump units according to claim 1, is characterized in that, described refrigeration restricting element is electric expansion valve.
4. net for air-source heat pump units according to claim 1, is characterized in that, described in heat restricting element be electric expansion valve or heating power expansion valve.
5. net for air-source heat pump units according to claim 1, is characterized in that, described compressor is closed or semi-hermetic refrigerating compressor unit.
6. net for air-source heat pump units according to claim 5, is characterized in that, described compressor is helical-lobe compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562204.4A CN104266407A (en) | 2014-10-21 | 2014-10-21 | Air source heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562204.4A CN104266407A (en) | 2014-10-21 | 2014-10-21 | Air source heat pump unit |
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| CN104266407A true CN104266407A (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410562204.4A Pending CN104266407A (en) | 2014-10-21 | 2014-10-21 | Air source heat pump unit |
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Cited By (2)
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| CN106642793A (en) * | 2017-03-08 | 2017-05-10 | 王维洲 | Multifunctional air source heat pump unit capable of uninterrupted heating |
| WO2017202198A1 (en) * | 2016-05-23 | 2017-11-30 | 广东美的暖通设备有限公司 | Multi-split system and method for controlling heating throttling element thereof |
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| WO2017202198A1 (en) * | 2016-05-23 | 2017-11-30 | 广东美的暖通设备有限公司 | Multi-split system and method for controlling heating throttling element thereof |
| EP3467390A4 (en) * | 2016-05-23 | 2019-07-31 | GD Midea Heating & Ventilating Equipment Co., Ltd. | Multi-split system and method for controlling heating throttling element thereof |
| CN106642793A (en) * | 2017-03-08 | 2017-05-10 | 王维洲 | Multifunctional air source heat pump unit capable of uninterrupted heating |
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