CN111426101A - Air source heat pump device capable of stably running in ultralow-temperature environment and control system thereof - Google Patents
Air source heat pump device capable of stably running in ultralow-temperature environment and control system thereof Download PDFInfo
- Publication number
- CN111426101A CN111426101A CN202010183620.9A CN202010183620A CN111426101A CN 111426101 A CN111426101 A CN 111426101A CN 202010183620 A CN202010183620 A CN 202010183620A CN 111426101 A CN111426101 A CN 111426101A
- Authority
- CN
- China
- Prior art keywords
- electromagnetic valve
- temperature
- communicated
- compressor
- economizer
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
-
- 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
-
- 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
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0401—Refrigeration circuit bypassing means for the compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/13—Economisers
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air source heat pump device stably operating in an ultralow temperature environment and a control system thereof, and relates to the technical field of air source heat pumps. The invention comprises a compressor, a condenser, a drying filter, an economizer, an evaporator, a gas-liquid separator, a liquid spraying electric solenoid valve and a one-way valve; the outlet of the compressor is sequentially communicated with a condenser and a dry filter; an outlet of the first drying filter is communicated with an inlet of the economizer, and the other outlet of the drying filter is communicated with the other inlet of the economizer through a first electromagnetic valve and a first expansion valve in sequence. According to the invention, whether the ambient temperature reaches the temperature threshold value of 30 ℃ is detected by the ambient temperature sensor, so that the liquid injection electric electromagnetic valve is controlled to be opened, the liquid injection electric electromagnetic valve enables the refrigerant with low temperature and medium pressure to be cooled and depressurized, then the refrigerant is mixed with the refrigerant gas in the gas-liquid separator to absorb heat, the temperature of the refrigerant in the gas-liquid separator is reduced, and the air suction temperature is reduced, so that the operation safety of the unit is ensured.
Description
Technical Field
The invention belongs to the technical field of air source heat pumps, and particularly relates to an air source heat pump device capable of stably running in an ultralow temperature environment and a control system thereof.
Background
At present, the demand of cold areas to air supply heat pump constantly increases, and cold areas heating period in winter is long and the user is big to the heat demand, and air supply heat pump can appear because of evaporating temperature is low excessively, the exhaust temperature is too high not enough problem of heating volume that leads to, and even under the ultra-low temperature environment, the compression is difficult to maintain normal work. Therefore, in the design work of the heat pump system, in order to ensure that the system can still keep normal operation under the low-temperature working condition and the ultra-low-temperature working condition, the air supply and liquid injection heat pump system is an effective design scheme.
In view of the problem of how to stably operate the air source heat pump under the ultralow temperature environment in order to meet the heating quantity requirement, the invention provides an air source heat pump device which stably operates under the ultralow temperature environment and a control system thereof; normal operation of the air source heat pump in an ultralow temperature environment is completed by using a gas supplementing and liquid spraying technology; namely: when the ambient temperature is more than or equal to minus 30 ℃, the enthalpy of the air supply is increased for the compressor, and when the ambient temperature is less than 30 ℃, the exhaust temperature can not be reduced by the air supply of the compressor, and the temperature is reduced by spraying liquid.
Disclosure of Invention
The invention aims to provide an air source heat pump device and a control system thereof which stably run in an ultralow temperature environment, and the low-pressure low-temperature refrigerant decompressed by a first expansion valve in an auxiliary circuit is properly preheated by an enhanced vapor injection system so as to reach proper medium pressure and is supplied to a compressor for secondary compression; and the refrigerant of the main circulation loop is supercooled before throttling through a liquid spraying cooling system, so that the enthalpy difference is increased.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to an air source heat pump device which stably runs in an ultralow temperature environment, comprising: the system comprises a compressor, a condenser, a drying filter, an economizer, an evaporator, a gas-liquid separator, a liquid spraying electric solenoid valve and a one-way valve; the outlet of the compressor is sequentially communicated with a condenser and a dry filter; an outlet of the first drying filter is communicated with an inlet of the first economizer, and the other outlet of the drying filter is communicated with the other inlet of the economizer through a first electromagnetic valve and a first expansion valve in sequence;
an outlet of the economizer is communicated with an air inlet of the compressor through a one-way valve, and the other outlet of the economizer is connected with two branches; one branch is communicated with the gas-liquid separator through a liquid spraying electric solenoid valve, and the other branch is communicated with the gas-liquid separator through a second solenoid valve, a second expansion valve and an evaporator in sequence; and the outlet of the gas-liquid separator is communicated with the air inlet of the compressor.
Preferably, the condenser is communicated with the drying filter through a liquid storage device.
A control system of an air source heat pump device which stably runs in an ultralow temperature environment comprises a main control panel, a compressor, a first electromagnetic valve, a second electromagnetic valve, a liquid spraying electric electromagnetic valve and an ambient temperature sensor; the environment temperature sensor monitors the environment temperature and transmits the environment temperature to the main control board; and the main control board controls the compressor, the first electromagnetic valve, the second electromagnetic valve and the liquid spraying electric electromagnetic valve to be switched on and off according to the environment temperature.
Preferably, the temperature threshold is prestored in a storage unit of the main control board; when the environment temperature is higher than a temperature threshold value, the main control board controls to open a first electromagnetic valve and a second electromagnetic valve; and when the ambient temperature is lower than the temperature threshold, the main control board controls to open the first electromagnetic valve, the second electromagnetic valve and the liquid spraying electric electromagnetic valve.
Preferably, the temperature threshold is from-40 to-20 ℃.
Preferably, the temperature threshold is-30 ℃.
One aspect of the present invention has the following advantageous effects:
1. on one hand, the invention forms an enhanced vapor injection system through the compressor, the condenser, the first electromagnetic valve, the first expansion valve, the economizer and the one-way valve, realizes the proper preheating of the low-pressure low-temperature refrigerant after the pressure reduction of the first expansion valve in the auxiliary circuit, so as to reach the proper medium pressure, and provides the low-pressure low-temperature refrigerant for the compressor to carry out secondary compression; on the other hand, the compressor, the condenser, the economizer, the evaporator and the gas-liquid separator form a liquid spraying cooling system, so that the main circulation loop refrigerant is supercooled before throttling, and the enthalpy difference is increased.
2. According to the invention, whether the ambient temperature reaches the temperature threshold value of 30 ℃ is detected by the ambient temperature sensor, so that the liquid spraying electric solenoid valve is controlled to be opened, low-temperature medium-pressure refrigerant liquid from the economizer is sprayed into the gas-liquid separator by the liquid spraying electric solenoid valve, the low-temperature medium-pressure refrigerant is cooled and depressurized by the liquid spraying electric solenoid valve, and then is mixed with the refrigerant gas in the gas-liquid separator to absorb heat, the temperature of the refrigerant in the gas-liquid separator is reduced, and the gas suction temperature is reduced, so that the operation safety of the unit is ensured.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an air source heat pump device operating stably in an ultra-low temperature environment according to the present invention;
FIG. 2 is a schematic structural diagram of a control system of an air source heat pump device operating stably in an ultra-low temperature environment according to the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-compressor, 2-condenser, 3-drying filter, 4-economizer, 41-first electromagnetic valve, 42-first expansion valve, 5-evaporator, 6-gas-liquid separator, 61-second electromagnetic valve, 62-second expansion valve, 7-hydrojet electric electromagnetic valve, 8-one-way valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "open," "upper," "middle," "length," "inner," and the like are used in an orientation or positional relationship for convenience in describing the present invention and for simplicity of description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1, the present invention is an air source heat pump device stably operating in an ultra-low temperature environment, including: the device comprises a compressor 1, a condenser 2, a drying filter 3, an economizer 4, an evaporator 5, a gas-liquid separator 6, a liquid spraying electric electromagnetic valve 7 and a one-way valve 8;
the outlet of the compressor 1 is communicated with a condenser 2 and a drying filter 3 in sequence; one outlet of the dry filter 3 is communicated with one inlet of the economizer 4, and the other outlet of the dry filter 3 is communicated with the other inlet of the economizer 4 through a first electromagnetic valve 41 and a first expansion valve 42 in sequence; the condenser 2 is communicated with the dry filter 3 through a liquid storage device 21;
one outlet of the economizer 4 is communicated with the air inlet of the compressor 1 through a one-way valve 8, and the other outlet of the economizer 4 is connected with two branches; one branch is communicated with the gas-liquid separator 6 through the liquid spraying electric solenoid valve 7, and the other branch is communicated with the gas-liquid separator 6 through the second solenoid valve 61, the second expansion valve 62 and the evaporator 5 in sequence; the outlet of the gas-liquid separator 6 is communicated with the air inlet of the compressor 1;
referring to fig. 2, the control system of the air source heat pump device stably operating in a low temperature environment is characterized by comprising a main control board, a compressor 1, a first electromagnetic valve 41, a second electromagnetic valve 61, a liquid injection electric electromagnetic valve 7 and an ambient temperature sensor; the environment temperature sensor monitors the environment temperature and transmits the environment temperature to the main control panel; the main control board controls the opening and closing of the compressor 1, the first electromagnetic valve 41, the second electromagnetic valve 61, and the liquid ejection electric electromagnetic valve 7 according to the ambient temperature.
Wherein, the temperature threshold value is prestored in the storage unit of the main control board; when the ambient temperature is higher than the temperature threshold, the main control board controls to open the first electromagnetic valve 41 and the second electromagnetic valve 61; when the ambient temperature is lower than the temperature threshold, the main control board controls to open the first electromagnetic valve 41, the second electromagnetic valve 61 and the liquid spraying electric electromagnetic valve 7; in practical use, ultralow temperature generally means that the temperature threshold is-40 to-20 ℃; now, the temperature threshold is taken to be-30 ℃.
When the heat pump type air conditioner is actually used, high-temperature and high-pressure refrigerant gas flowing out of the compressor 1 is cooled through the condenser 2, heat released by condensation is transferred to the intermediate medium, and the intermediate medium absorbing heat and increasing temperature is used for heating; the condensed refrigerant is divided into two paths, which are respectively as follows: a main circuit refrigeration circuit and an auxiliary circuit air supplement circuit.
The refrigerating liquid in the auxiliary circuit is decompressed to a certain intermediate pressure by the first expansion valve 42 and then becomes a medium-pressure gas-liquid mixture to exchange heat with the refrigerant liquid with higher temperature in the economizer 4; the refrigerant liquid of the auxiliary path absorbs heat and turns into gas, and then the gas passes through the one-way valve 8 and is supplemented into the working cavity of the compressor through the auxiliary air inlet of the compressor 1. In the above process, the refrigerant in the main path is supercooled in the economizer 4, and the supercooled refrigerant enters the evaporator 5 through the second expansion valve 62. The economizer 4 plays a key role in the whole process, and on one hand, the refrigerant in the main path is supercooled before throttling, so that the enthalpy difference is increased; on the other hand, the low-pressure and low-temperature refrigerant decompressed by the first expansion valve 42 in the auxiliary circuit is appropriately preheated to reach an appropriate intermediate pressure, and is supplied to the compressor 1 for secondary compression.
In the evaporator 5, the refrigerant in the main path absorbs the heat in the low-temperature environment and turns into low-pressure gas to enter a compressor suction cavity; after the compression in one section, the refrigerants of the main path and the auxiliary path are mixed in the working cavity of the compressor, the refrigerants are mixed while being compressed in the compressor 1 until the mixing process is finished, the mixed refrigerants are further compressed by the compressor and then are discharged out of the compressor 1, and the mixed refrigerants enter the condenser to form a closed working cycle of the enhanced vapor injection heat pump system.
The air supplement can improve low-temperature energy efficiency and heating capacity, and meanwhile, the exhaust temperature is controlled not to be too high, so that the system is unsafe. Obtained from practical practice, the temperature of minus 30 ℃ can be used as a critical temperature point, and the temperature of exhaust can be reduced by air supply at the temperature of minus 30 ℃. Below-30 ℃, the effect of reducing the exhaust temperature of the compressor by supplementing air is very little, and the operation of the compressor is limited due to the excessively high exhaust temperature. At this point, a small spray cycle is started to ensure the compressor operates normally.
The small spray circulation can be monitored by an ambient temperature sensor and transmitted to the main control board, and when the temperature shows that the temperature is less than-30 ℃, the spray one-way valve 8 is opened; although the exhaust temperature of the spray liquid can only be controlled and is not too high, the effects of increasing the energy efficiency and the heating capacity are not achieved; a spray liquid cooling small cycle, wherein the cycle schematic diagram of the spray liquid is shown in the figure 1, and the liquid taking position of the spray liquid can be that the liquid is taken in front of the economizer 4 or in back of the economizer 4; the liquid is taken after the economizer 4, so that the liquid taking temperature is slightly lower and the liquid spraying throttling is smaller. The refrigerant liquid of the low temperature middling pressure that comes out from economizer 4 is spouted to vapour and liquid separator 6 in by hydrojet electric solenoid valve 7, hydrojet electric solenoid valve 7 itself has the effect of throttle step-down, can let the refrigerant cooling step-down of low temperature middling pressure, then absorb heat with the low temperature low pressure refrigerant gas mixture inside vapour and liquid separator 6, wholly draw down the refrigerant temperature of vapour and liquid separator the inside for the temperature of breathing in reduces, corresponding exhaust temperature just then follows the reduction, thereby the operation safety of unit has been ensured.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. Air source heat pump device of steady operation under ultra-low temperature environment, its characterized in that includes: the device comprises a compressor (1), a condenser (2), a drying filter (3), an economizer (4), an evaporator (5), a gas-liquid separator (6), a liquid spraying electric solenoid valve (7) and a one-way valve (8);
the outlet of the compressor (1) is sequentially communicated with a condenser (2) and a drying filter (3); one outlet of the dry filter (3) is communicated with one inlet of the economizer (4), and the other outlet of the dry filter (3) is communicated with the other inlet of the economizer (4) through a first electromagnetic valve (41) and a first expansion valve (42) in sequence;
one outlet of the economizer (4) is communicated with an air inlet of the compressor (1) through a one-way valve (8), and the other outlet of the economizer (4) is connected with two branches; one branch is communicated with the gas-liquid separator (6) through a liquid spraying electric solenoid valve (7), and the other branch is communicated with the gas-liquid separator (6) through a second solenoid valve (61), a second expansion valve (62) and an evaporator (5) in sequence;
and the outlet of the gas-liquid separator (6) is communicated with the air inlet of the compressor (1).
2. The air source heat pump device stably operating in the ultra-low temperature environment as claimed in claim 1, wherein the condenser (2) is communicated with the dry filter (3) through a liquid storage device (21).
3. The control system of the air source heat pump apparatus stably operating under the ultra-low temperature environment according to any one of claims 1 or 2, characterized by comprising a main control board, a compressor (1), a first electromagnetic valve (41), a second electromagnetic valve (61), a liquid injection electric electromagnetic valve (7) and an ambient temperature sensor; the environment temperature sensor monitors the environment temperature and transmits the environment temperature to the main control board; and the main control board controls the on-off of the compressor (1), the first electromagnetic valve (41), the second electromagnetic valve (61) and the liquid spraying electric electromagnetic valve (7) according to the ambient temperature.
4. The control system of an air source heat pump device stably operating under an ultra-low temperature environment according to claim 3, wherein a temperature threshold value is pre-stored in a storage unit of the main control board; when the ambient temperature is higher than a temperature threshold value, the main control board controls to open a first electromagnetic valve (41) and a second electromagnetic valve (61); when the ambient temperature is lower than a temperature threshold value, the main control board controls to open the first electromagnetic valve (41), the second electromagnetic valve (61) and the liquid spraying electric electromagnetic valve (7).
5. The air source heat pump device and the control system thereof stably operating in the ultra-low temperature environment as claimed in claim 4, wherein the temperature threshold is-40 to-20 ℃.
6. The air source heat pump device and the control system thereof stably operating in the ultra-low temperature environment as claimed in claim 5, wherein the temperature threshold is-30 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010183620.9A CN111426101A (en) | 2020-03-16 | 2020-03-16 | Air source heat pump device capable of stably running in ultralow-temperature environment and control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010183620.9A CN111426101A (en) | 2020-03-16 | 2020-03-16 | Air source heat pump device capable of stably running in ultralow-temperature environment and control system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111426101A true CN111426101A (en) | 2020-07-17 |
Family
ID=71553536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010183620.9A Pending CN111426101A (en) | 2020-03-16 | 2020-03-16 | Air source heat pump device capable of stably running in ultralow-temperature environment and control system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111426101A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465217A (en) * | 2021-06-29 | 2021-10-01 | 青岛海尔空调电子有限公司 | Refrigeration system and control method for refrigeration system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650075A (en) * | 2009-09-07 | 2010-02-17 | 浙江正理生能科技有限公司 | Air source low-temperature heat pump water heater |
| EP2426437A2 (en) * | 2010-09-02 | 2012-03-07 | Guangzhou Deron Heat Source Facilities Co., Ltd. | Ultra low temperature heat pump system with secondary refrigerant injection mechanism |
| CN105258392A (en) * | 2015-10-15 | 2016-01-20 | 珠海格力电器股份有限公司 | Heat pump heating system, control method and heat pump water heater |
| CN105588365A (en) * | 2015-06-30 | 2016-05-18 | 青岛海信日立空调***有限公司 | Intense heat type outdoor unit, heat pump system and control method of intense heat type outdoor unit and heat pump system |
| CN108592463A (en) * | 2018-04-20 | 2018-09-28 | 珠海格力电器股份有限公司 | Air conditioner heat pump system and control method |
| CN109140841A (en) * | 2018-08-27 | 2019-01-04 | 珠海格力电器股份有限公司 | A kind of economizer air compensating system and air-conditioning system |
| CN110749116A (en) * | 2019-09-12 | 2020-02-04 | 浙江中广电器股份有限公司 | Enthalpy-increasing auxiliary road control method for low-temperature heat pump system, low-temperature heat pump system and enthalpy-increasing auxiliary road structure of low-temperature heat pump system |
-
2020
- 2020-03-16 CN CN202010183620.9A patent/CN111426101A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650075A (en) * | 2009-09-07 | 2010-02-17 | 浙江正理生能科技有限公司 | Air source low-temperature heat pump water heater |
| EP2426437A2 (en) * | 2010-09-02 | 2012-03-07 | Guangzhou Deron Heat Source Facilities Co., Ltd. | Ultra low temperature heat pump system with secondary refrigerant injection mechanism |
| CN105588365A (en) * | 2015-06-30 | 2016-05-18 | 青岛海信日立空调***有限公司 | Intense heat type outdoor unit, heat pump system and control method of intense heat type outdoor unit and heat pump system |
| CN105258392A (en) * | 2015-10-15 | 2016-01-20 | 珠海格力电器股份有限公司 | Heat pump heating system, control method and heat pump water heater |
| CN108592463A (en) * | 2018-04-20 | 2018-09-28 | 珠海格力电器股份有限公司 | Air conditioner heat pump system and control method |
| CN109140841A (en) * | 2018-08-27 | 2019-01-04 | 珠海格力电器股份有限公司 | A kind of economizer air compensating system and air-conditioning system |
| CN110749116A (en) * | 2019-09-12 | 2020-02-04 | 浙江中广电器股份有限公司 | Enthalpy-increasing auxiliary road control method for low-temperature heat pump system, low-temperature heat pump system and enthalpy-increasing auxiliary road structure of low-temperature heat pump system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465217A (en) * | 2021-06-29 | 2021-10-01 | 青岛海尔空调电子有限公司 | Refrigeration system and control method for refrigeration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3299747B1 (en) | Switchable two-stage cascade energy-saving ultralow-temperature refrigeration system for ships | |
| CN103148629B (en) | Gas-liquid phase ejector synergy refrigeration system for double temperature direct cooling-type refrigerator | |
| CN105333545B (en) | A kind of steam compressed combined refrigeration system of idle call heat pipe with injector | |
| CN110332635B (en) | Double-stage compression multi-air-supplementing refrigeration heat pump system, control method and air conditioner | |
| CN104596166A (en) | Air conditioner and air supplying and enthalpy adding method thereof | |
| CN100480598C (en) | Ejector cycle | |
| CN112665214B (en) | Integrated system based on energy storage type carbon dioxide circulation cold and heat supply and fire-fighting servo and operation method thereof | |
| CN109489292A (en) | A kind of air conditioner heat pump system with Gas-supplying enthalpy-increasing and battery thermal management function | |
| CN104976813A (en) | Air conditioner | |
| CN102901259A (en) | Double-machine double-stage compression refrigeration unit | |
| CN110207418A (en) | A kind of heat pump system and control method with double evaporating temperatures | |
| CN113310243B (en) | Mixed working medium low-temperature refrigeration circulation system adopting ejector and control method | |
| CN110953757A (en) | Liquid-spraying enthalpy-increasing heat pump unit and control method thereof | |
| CN111426101A (en) | Air source heat pump device capable of stably running in ultralow-temperature environment and control system thereof | |
| KR102173814B1 (en) | Cascade heat pump system | |
| CN205174909U (en) | Air conditioning system | |
| CN108482062A (en) | Electric automobile heat-pump type air-conditioning system with injector | |
| CN218380059U (en) | Overlapping hot fluorine defrosting type refrigeration and hot water dual supply unit | |
| CN216716662U (en) | Carbon dioxide direct evaporation type ice making system for artificial ice rink | |
| CN114459179B (en) | Artificial ice rink carbon dioxide direct evaporation type ice making system and application method thereof | |
| CN115183517A (en) | Cascade hot fluorine defrosting type freezing and hot water dual supply unit | |
| CN109307377A (en) | Using the two-stage self-cascade refrigeration system system and round-robin method of injector synergy | |
| CN115031421A (en) | Low-temperature skid-mounted refrigerating unit of hydrogenation machine | |
| CN210425610U (en) | Refrigeration system | |
| CN209524650U (en) | Air-conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200717 |
|
| RJ01 | Rejection of invention patent application after publication |