CN109654611A - A kind of greenhouse constant-temperature heat pump unit and its control method - Google Patents
A kind of greenhouse constant-temperature heat pump unit and its control method Download PDFInfo
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- CN109654611A CN109654611A CN201811229429.2A CN201811229429A CN109654611A CN 109654611 A CN109654611 A CN 109654611A CN 201811229429 A CN201811229429 A CN 201811229429A CN 109654611 A CN109654611 A CN 109654611A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/001—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems in which the air treatment in the central station takes place by means of a heat-pump or by means of a reversible cycle
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/245—Conduits for heating by means of liquids, e.g. used as frame members or for soil heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Abstract
The invention discloses a kind of greenhouse constant-temperature heat pump units, including body and water tank, the inside of body is equipped with compressor, First Heat Exchanger, second heat exchanger and blower fan module, the inner cavity of body is separated into two parts up and down of air-out chamber and air-inlet cavity by blower fan module, compressor, First Heat Exchanger and the second heat exchanger are fixedly mounted in air-inlet cavity, suction side of second heat exchanger close to blower fan module, air-inlet cavity is equipped with the first air inlet with air communication in greenhouse, first air inlet is located at the lower section of the second heat exchanger, air-out chamber is equipped with the first air outlet with air communication in greenhouse, the outside that body is arranged in water tank is connect with First Heat Exchanger.The invention also discloses a kind of control methods using above-mentioned greenhouse constant-temperature heat pump unit.The present invention can satisfy the refrigeration inside greenhouse and the demand of heating, and since the setting of water tank, heat pump unit run Shi Nengyu First Heat Exchanger and generate preferable heat transfer effect, guarantee that heat pump unit operates normally.
Description
Technical field
The invention belongs to greenhouse constant temperature technology fields, more specifically to a kind of greenhouse constant-temperature heat pump unit and its control
Method processed.
Background technique
Greenhouse generallys use roof truss combination pipe network water circulation accumulation of heat constant temperature, earth source heat pump constant temperature, natural gas boiler+temperature at present
Three kinds of modes of canopy heat pipe combination constant temperature carry out, although these three modes can realize greenhouse constant temperature, but have the following problems:
1, accumulation of heat constant temperature being recycled using roof truss combination pipe network water, the warm canopy of this type is biggish to be influenced by geographical and environment,
Land utilization ratio is low, can only do heating, can not freeze, and drawback is more, is not suitable for large area plantation；
2, using earth source heat pump constant temperature, the utilization of underground water source receives more limitation, and earth source heat pump energy-saving efficiency is high, but
It is to be used for a long time to face pipeline scale, efficiency reduces, the problems such as difficult in maintenance；
3, using natural gas boiler+temperature canopy heat pipe combination constant temperature, heat pipe delivery requirements temperature is not less than 40 degree, but conducts heat
Low efficiency, pipeline laying density is big, and cost of investment is high, and is not able to satisfy cooling in summer demand, and additional cold source is needed to supplement.
Summary of the invention
It, can the technical problem to be solved by the present invention is to provide a kind of greenhouse constant-temperature heat pump unit and its control method
Meet the refrigeration inside greenhouse and the demand of heating, and due to the setting of water tank, it can be with the first heat exchange when heat pump unit is run
Device generates preferable heat transfer effect, guarantees that heat pump unit operates normally.
In order to solve the above-mentioned technical problem, one aspect of the present invention provides a kind of greenhouse constant-temperature heat pump unit, including
The inside of body and water tank, the body is equipped with compressor, First Heat Exchanger, the second heat exchanger and blower fan module, the blower
The inner cavity of the body is separated into two parts up and down of air-out chamber and air-inlet cavity, the suction side of the blower fan module and institute by module
Air-inlet cavity connection is stated, the positive pressure side of the blower fan module is connected to the air-out chamber, the compressor, First Heat Exchanger and second
Heat exchanger is fixedly mounted in the air-inlet cavity, second heat exchanger close to the blower fan module suction side, it is described into
Wind chamber is equipped with the first air inlet with air communication in greenhouse, and first air inlet is located at the lower section of second heat exchanger,
The air-out chamber is equipped with the first air outlet with air communication in greenhouse, and first air inlet is equipped with the first air inlet valve, described
First air outlet is equipped with the first outlet valve；The water tank is arranged in the outside of the body, and the water tank be equipped with water inlet pipe and
Outlet pipe, the water inlet pipe are connect with the water inlet of the First Heat Exchanger, and the outlet pipe goes out with the First Heat Exchanger
Mouth of a river connection.
As the preferred embodiment of greenhouse constant-temperature heat pump unit of the invention, the air-inlet cavity is equipped with and is connected to outside air
Second air inlet, second air inlet are located at the lower section of second heat exchanger, and the air-out chamber is equipped with to be connected with outside air
The second logical air outlet, second air inlet are equipped with the second air inlet valve, and second air outlet is equipped with the second outlet valve.
As the preferred embodiment of greenhouse constant-temperature heat pump unit of the invention, the greenhouse constant-temperature heat pump unit further includes being used for
Detect the carbon dioxide sensor of the gas concentration lwevel in greenhouse.
As the preferred embodiment of greenhouse constant-temperature heat pump unit of the invention, the greenhouse constant-temperature heat pump unit further includes control
Device, the controller are electrically connected with the carbon dioxide sensor, and the controller can be examined according to the carbon dioxide sensor
The signal measured controls the switch of the first air inlet valve, the first outlet valve, the second air inlet valve and the second outlet valve.
As the preferred embodiment of greenhouse constant-temperature heat pump unit of the invention, second heat exchanger is obliquely arranged in described
The suction side of blower fan module, and the periphery of second heat exchanger and the inner cavity of the body cooperate fixation.
As the preferred embodiment of greenhouse constant-temperature heat pump unit of the invention, first air inlet is by wind inlet channel and greatly
Canopy is connected, and first air outlet is connected by exhaust air flue with greenhouse.
As the preferred embodiment of greenhouse constant-temperature heat pump unit of the invention, the water tank is equipped with insulating layer.
In addition, another aspect of the present invention additionally provides a kind of application greenhouse constant-temperature heat pump described in every content above
The control method of unit,
When heating to greenhouse inside: heat pump unit is in refrigerating operaton, opens first air inlet valve and first and goes out
Air-valve, closes second air inlet valve and the second outlet valve, and the cold air of greenhouse is entered the wind by wind inlet channel by described first
Mouth enters the air-inlet cavity, and the First Heat Exchanger is evaporated by absorbing the heat of the Water in Water Tanks, and described second changes
Hot device condensation distributes heat and exchanges heat with the cold air for entering the air-inlet cavity, after cold air is heated to be hot-air, leads to
It crosses the blower fan module and is conveyed to greenhouse heat through first air outlet and exhaust air flue, when the air in greenhouse reaches heating
After target temperature, stop heat pump unit operation；
When freezing to greenhouse inside: heat pump unit is in heating operation, opens first air inlet valve and first and goes out
Air-valve, closes second air inlet valve and the second outlet valve, and the hot-air of greenhouse is entered the wind by wind inlet channel by described first
Mouth enters the air-inlet cavity, and heat is transmitted to the water tank heat storage, second heat exchanger by the First Heat Exchanger condensation heat dissipation
Heat is evaporated in hot-air by being absorbed into the air-inlet cavity, hot-air be absorbed heat cooling be cold air after,
Cold air is conveyed to greenhouse cooling through first air outlet and exhaust air flue by the blower fan module, when the air in greenhouse
After reaching refrigeration target temperature, stop heat pump unit operation.
The preferred embodiment of control method as greenhouse constant-temperature heat pump unit of the invention, heats greenhouse inside
When, when carbon dioxide sensor detects that the gas concentration lwevel in greenhouse is more than setting value, open first outlet valve
With the second air inlet valve, close first air inlet valve and the second outlet valve, fresh air by second air inlet enter it is described into
Wind chamber, the First Heat Exchanger are evaporated by absorbing the heat of the Water in Water Tanks, and the second heat exchanger condensation distributes
Heat simultaneously exchanges heat with the fresh air for entering the air-inlet cavity, and after fresh air is heated to be hot-air, hot-air passes through the blower
Module is conveyed to greenhouse heat through first air outlet and exhaust air flue, when the air in greenhouse reaches heating target temperature
Afterwards, stop heat pump unit operation.
The preferred embodiment of control method as greenhouse constant-temperature heat pump unit of the invention, when the air in greenhouse reaches system
After thermal target temperature, when carbon dioxide sensor detects the gas concentration lwevel in greenhouse still above setting value, described in unlatching
First outlet valve and the second air inlet valve close first air inlet valve and the second outlet valve, the blower fan module are opened, until two
When oxidation carbon sensor detects the gas concentration lwevel in greenhouse lower than setting value, the blower fan module is closed.
The preferred embodiment of control method as greenhouse constant-temperature heat pump unit of the invention, freezes to greenhouse inside
When, when carbon dioxide sensor detects that the gas concentration lwevel in greenhouse is more than setting value, open first outlet valve
With the second air inlet valve, close first air inlet valve and the second outlet valve, fresh air by second air inlet enter it is described into
Heat is transmitted to the water tank heat storage by wind chamber, the First Heat Exchanger condensation heat dissipation, and second heat exchanger is by being absorbed into
Heat is evaporated in the fresh air of the air-inlet cavity, and fresh air is absorbed heat cooling to pass through the blower fan module after cold air
It is conveyed to greenhouse cooling through first air outlet and exhaust air flue, after the air in greenhouse reaches refrigeration target temperature, is stopped
Only heat pump unit is run.
The preferred embodiment of control method as greenhouse constant-temperature heat pump unit of the invention, when the air in greenhouse reaches system
After cold target temperature, when carbon dioxide sensor detects the gas concentration lwevel in greenhouse still above setting value, described in unlatching
First outlet valve and the second air inlet valve close first air inlet valve and the second outlet valve, the blower fan module are opened, until two
When oxidation carbon sensor detects the gas concentration lwevel in greenhouse lower than setting value, the blower fan module is closed.
The preferred embodiment of control method as greenhouse constant-temperature heat pump unit of the invention, when the air in greenhouse realizes
After constant temperature, and when the water tank heat storage scarce capacity, water tank heat storage mode is opened, heat pump unit is in heating operation, opens institute
The second air inlet valve and the second outlet valve are stated, first air inlet valve and the first outlet valve are closed, fresh air is entered the wind by described second
Mouth enters the air-inlet cavity, and fresh air passes through second air outlet blowout after providing heat to the evaporation of second heat exchanger,
The First Heat Exchanger condensation distributes heat, and the cold water in the water tank enters the First Heat Exchanger by the outlet pipe
Inside after cold water exchanges heat and is heated to be hot water, enters the water tank by the water inlet pipe, gives the water tank heat storage.
Implement a kind of greenhouse constant-temperature heat pump unit of the invention and its control method, compared with prior art, has such as
It is lower the utility model has the advantages that
(1) compressor, First Heat Exchanger, the second heat exchanger and blower fan module are set to the inside of body by the present invention, are led to
The setting for crossing the first air inlet and the first air outlet makes that circulating air duct is connected to and formed with internal body inside greenhouse, works as heat pump
When unit is in heating operation, the hot-air in greenhouse enters air-inlet cavity by the first air inlet, and by the second heat exchanger to this
Hot-air carries out cooling and forms cold wind, returns in greenhouse under the action of blower fan module, and then achieve the purpose that refrigeration；Work as heat
When pump assembly is in refrigerating operaton, the cold air in greenhouse enters air-inlet cavity by the first air inlet, and by the second heat exchanger pair
The cold air carries out heat temperature raising and forms hot wind, returns in greenhouse under the action of blower fan module, and then reach the mesh of heating
's；As it can be seen that the present invention can satisfy the refrigeration inside greenhouse and the demand of heating, and due to the setting of water tank, heat pump unit
It runs Shi Nengyu First Heat Exchanger and generates preferable heat transfer effect, guarantee that heat pump unit operates normally.
(2) present invention passes through the setting of the second air inlet and the second air outlet, is connected to outside air simultaneously with internal body
Circulating air duct is formed, after the air in greenhouse realizes constant temperature, and when water tank heat storage scarce capacity, opens water tank heat storage mould
Formula, heat pump unit are in heating operation, open the second air inlet valve and the second outlet valve, close the first air inlet valve and the first outlet air
Valve, fresh air enter air-inlet cavity by the second air inlet, and fresh air passes through the second outlet air after providing heat to the evaporation of the second heat exchanger
Mouth blowout, First Heat Exchanger condensation distribute heat, and the cold water in water tank enters the inside of First Heat Exchanger, cold water by outlet pipe
After exchanging heat and being heated to be hot water, water tank, feed-tank accumulation of heat are entered by water inlet pipe, so that the temperature of the water of water tank be made to be maintained at
In the range of setting, the energy-efficient operation of constant-temperature heat pump unit is realized；When especially in winter, heat pump unit is in refrigeration fortune
Row, the heat that First Heat Exchanger need to absorb Water in Water Tanks are evaporated, and therefore, opening water tank heat storage mode can ensure that heat pump unit
It can operate normally at low ambient temperatures.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, the attached drawing to embodiment is simply situated between below
It continues.
Fig. 1 is a kind of structural schematic diagram of greenhouse constant-temperature heat pump unit provided by the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of preferred embodiment of greenhouse constant-temperature heat pump unit provided by the invention, including body 1 and water
The inside of case 2, the body 1 is equipped with compressor 3, First Heat Exchanger 4, the second heat exchanger 5 and blower fan module 6, the blower mould
The inner cavity of the body 1 is separated into two parts up and down of air-out chamber 7 and air-inlet cavity 8, the suction side of the blower fan module 6 by block 6
It is connected to the air-inlet cavity 8, the positive pressure side of the blower fan module 6 is connected to the air-out chamber 7, and the compressor 3, first exchanges heat
Device 4 and the second heat exchanger 5 are fixedly mounted in the air-inlet cavity 8, and second heat exchanger 5 is close to the blower fan module 6
Suction side, the air-inlet cavity 8 are equipped with the first air inlet 9 with air communication in greenhouse, and first air inlet 9 is located at described the
The lower section of two heat exchangers 5, the air-out chamber 7 are equipped with the first air outlet 10 with air communication in greenhouse, first air inlet 9
Equipped with the first air inlet valve 91, first air outlet 10 is equipped with the first outlet valve 101；The body 1 is arranged in the water tank 2
Outside, and the water tank 2 is equipped with water inlet pipe 21 and outlet pipe 22, the water inlet of the water inlet pipe 21 and the First Heat Exchanger 4
Connection, the outlet pipe 22 are connect with the water outlet of the First Heat Exchanger 4.
A kind of greenhouse constant-temperature heat pump unit of the invention as a result, by compressor 3, First Heat Exchanger 4,5 and of the second heat exchanger
Blower fan module 6 is set to the inside of body 1, by the setting of the first air inlet 9 and the first air outlet 10, makes greenhouse inside and machine
Circulating air duct is connected to and formed inside body 1, and when heat pump unit is in heating operation, the hot-air in greenhouse passes through the first air inlet
Mouth 9 enters air-inlet cavity 8, and carries out cooling to the hot-air by the second heat exchanger 5 and form cold wind, under the action of blower fan module 6
It returns in greenhouse, and then achievees the purpose that refrigeration；When heat pump unit is in refrigerating operaton, cold air in greenhouse passes through the
One air inlet 9 enters air-inlet cavity 8, and carries out heat temperature raising to the cold air by the second heat exchanger 5 and form hot wind, in blower fan module
It is returned in greenhouse under the action of 6, and then achievees the purpose that heating；As it can be seen that the present invention can satisfy refrigeration inside greenhouse and
The demand of heating, and due to the setting of water tank, heat pump unit runs Shi Nengyu First Heat Exchanger and generates preferable heat transfer effect,
Guarantee that heat pump unit operates normally.
More preferably, the air-inlet cavity 8 is equipped with the second air inlet 11 being connected to outside air, second air inlet 11
In the lower section of second heat exchanger 5, the air-out chamber 7 is equipped with the second air outlet 12 for being connected to outside air, and described second
Air inlet 11 is equipped with the second air inlet valve 111, and second air outlet 12 is equipped with the second outlet valve 121.
The present invention passes through the setting of the second air inlet 11 and the second air outlet 12 as a result, makes inside outside air and body 1
It is connected to and is formed circulating air duct, after the air in greenhouse realizes constant temperature, and when 2 heat storage capacity deficiency of water tank, opens water tank
Accumulation of heat mode, heat pump unit are in heating operation, open the second air inlet valve 111 and the second outlet valve 121, close the first air inlet valve
91 and first outlet valve 101, fresh air air-inlet cavity 8 is entered by the second air inlet 11, fresh air is provided to the evaporation of the second heat exchanger 5
It is blown out after heat by the second air outlet 12, the condensation of First Heat Exchanger 4 distributes heat, and the cold water in water tank 2 passes through outlet pipe 22
Into the inside of First Heat Exchanger 4, after cold water exchanges heat and is heated to be hot water, water tank 2, feed-tank 2 are entered by water inlet pipe 21
Accumulation of heat is maintained at the temperature of the water of water tank in range of set value, realizes the energy-efficient operation of constant-temperature heat pump unit；Especially exist
When winter, heat pump unit is in refrigerating operaton, and the heat that First Heat Exchanger need to absorb Water in Water Tanks is evaporated, and therefore, opens
Water tank heat storage mode can ensure that heat pump unit can operate normally at low ambient temperatures.
It should also be noted that, opening 101 He of the first outlet valve when the gas concentration lwevel in greenhouse is more than setting value
Second air inlet valve 111, closes the first air inlet valve 91 and the second outlet valve 121, and fresh air enters air-inlet cavity by the second air inlet 11
8, First Heat Exchanger 4 is evaporated by absorbing the heat of water in water tank 2, the condensation of the second heat exchanger 5 distribute heat and with entrance
The fresh air of air-inlet cavity 8 exchanges heat, and after fresh air is heated to be hot-air, hot-air is by blower fan module 6 through the first air outlet 10
Greenhouse heat is conveyed to exhaust air flue 14, it is seen then that by the setting of the second air inlet and the second air outlet, is conducive to greenhouse
Interior gas concentration lwevel is regulated and controled, and the gas concentration lwevel in greenhouse can be effectively prevent excessively high and the life of influence kind plant
It is long.
Illustratively, the greenhouse constant-temperature heat pump unit further includes the dioxy for detecting the gas concentration lwevel in greenhouse
Change carbon sensor, the gas concentration lwevel in avoidable greenhouse is excessively high and influences the growth of kind of plant.
Illustratively, the greenhouse constant-temperature heat pump unit further includes controller, and the controller and the carbon dioxide pass
Sensor electrical connection, the controller can control the first air inlet valve according to the signal that the carbon dioxide sensor detects
91, the switch of the first outlet valve 101, the second air inlet valve 111 and the second outlet valve 121.Such design, can more it is intelligent easily
Control the switching between each air-valve, the gas concentration lwevel in auto-control greenhouse.
Illustratively, the suction side of the blower fan module 6, and described second is obliquely arranged in second heat exchanger 5
The periphery of heat exchanger 5 and the inner cavity of the body 1, which cooperate, to be fixed, and such design can make the sky of the second heat exchanger and air-inlet cavity
The contact area of gas is bigger, exchanges heat more abundant.
Illustratively, first air inlet 9 is connected by wind inlet channel 13 with greenhouse, and first air outlet 10 is logical
It crosses exhaust air flue 14 to be connected with greenhouse, such design, be conducive to the placement more convenience of constant-temperature heat pump unit and do not limit to.
Illustratively, for excessive, the water tank 2 that guarantees that the temperature of the water in water tank is not influenced by outside air temperature
Equipped with insulating layer.
In addition, a kind of control method for applying greenhouse constant-temperature heat pump unit described in every content above provided by the invention
Preferred embodiment.
When heating to greenhouse inside: heat pump unit is in refrigerating operaton, and first air inlet is opened in controller control
Valve 91 and the first outlet valve 101 close second air inlet valve 111 and the second outlet valve 121, and the cold air of greenhouse is by air inlet
Air duct 13 enters the air-inlet cavity 8 by first air inlet 9, and the First Heat Exchanger 4 is by absorbing water in the water tank 2
Heat be evaporated, second heat exchanger 5, which condenses, to be distributed heat and is changed with the cold air for entering the air-inlet cavity 8
Heat after cold air is heated to be hot-air, is conveyed by the blower fan module 6 through first air outlet 10 and exhaust air flue 14
Greenhouse heat is given, after the air in greenhouse reaches heating target temperature, stops heat pump unit operation；
When freezing to greenhouse inside: heat pump unit is in heating operation, and first air inlet is opened in controller control
Valve 91 and the first outlet valve 101 close second air inlet valve 111 and the second outlet valve 121, and the hot-air of greenhouse is by air inlet
Air duct 13 enters the air-inlet cavity 8 by first air inlet 9, and heat is transmitted to institute by the condensation of First Heat Exchanger 4 heat dissipation
2 accumulation of heat of water tank is stated, heat is evaporated in hot-air of second heat exchanger 5 by being absorbed into the air-inlet cavity 8, and heat is empty
Gas is absorbed heat cooling as after cold air, cold air is by the blower fan module 6 through first air outlet 10 and outlet air wind
Road 14 is conveyed to greenhouse cooling, after the air in greenhouse reaches refrigeration target temperature, stops heat pump unit operation.
The control method of a kind of greenhouse constant-temperature heat pump unit of the invention as a result, can satisfy refrigeration inside greenhouse and
The demand of heating, and due to the setting of water tank, heat pump unit runs Shi Nengyu First Heat Exchanger and generates preferable heat transfer effect,
Guarantee that heat pump unit operates normally.
Illustratively, when being heated to greenhouse inside, when carbon dioxide sensor detects the carbon dioxide in greenhouse
When concentration is more than setting value, first outlet valve 101 and the second air inlet valve 111 are opened in controller control, close described first
Air inlet valve 91 and the second outlet valve 121, fresh air enter the air-inlet cavity 8, first heat exchange by second air inlet 11
Device 4 is evaporated by absorbing the heat of water in the water tank 2, the condensation of the second heat exchanger 5 distribute heat and with enter institute
The fresh air for stating air-inlet cavity 8 exchanges heat, and after fresh air is heated to be hot-air, hot-air is by the blower fan module 6 through described
One air outlet 10 and exhaust air flue 14 are conveyed to greenhouse heat, after the air in greenhouse reaches heating target temperature, stop heat
Pump assembly operation.In this way, passing through the setting of the second air inlet and the second air outlet, the switching of air-valve is controlled by controller, it is right
Gas concentration lwevel in greenhouse is regulated and controled, and the gas concentration lwevel in greenhouse can be effectively prevent excessively high and influence kind of plant
Growth.
Further, after the air in greenhouse reaches heating target temperature, carbon dioxide sensor is detected in greenhouse
Gas concentration lwevel still above setting value when, first outlet valve 101 and the second air inlet valve 111 are opened in controller control,
First air inlet valve 91 and the second outlet valve 121 are closed, the blower fan module 6 is opened, until carbon dioxide sensor detects
When gas concentration lwevel in greenhouse is lower than setting value, the blower fan module is closed.
Illustratively, when freezing to greenhouse inside, when carbon dioxide sensor detects the carbon dioxide in greenhouse
When concentration is more than setting value: first outlet valve 101 and the second air inlet valve 111 are opened in controller control, close described first
Air inlet valve 91 and the second outlet valve 121, fresh air enter the air-inlet cavity 8, first heat exchange by second air inlet 11
Heat is transmitted to 2 accumulation of heat of water tank by the condensation heat dissipation of device 4, and second heat exchanger 5 is by being absorbed into the new of the air-inlet cavity 8
Heat is evaporated in wind, fresh air be absorbed heat cooling be cold air after, by the blower fan module 6 through first outlet air
Mouth 10 and exhaust air flue 14 are conveyed to greenhouse cooling, after the air in greenhouse reaches refrigeration target temperature, stop heat pump unit
Operation.In this way, passing through the setting of the second air inlet and the second air outlet, the switching of air-valve is controlled by controller, in greenhouse
Gas concentration lwevel regulated and controled, the gas concentration lwevel in greenhouse can be effectively prevent excessively high and influence the growth of kind of plant.
Further, after the air in greenhouse reaches refrigeration target temperature, carbon dioxide sensor is detected in greenhouse
Gas concentration lwevel still above setting value when, first outlet valve 101 and the second air inlet valve 111 are opened in controller control,
First air inlet valve 91 and the second outlet valve 121 are closed, the blower fan module 6 is opened, until carbon dioxide sensor detects
When gas concentration lwevel in greenhouse is lower than setting value, the blower fan module 6 is closed.
Illustratively, after the air in greenhouse realizes constant temperature, and when 2 heat storage capacity deficiency of the water tank, water is opened
Case accumulation of heat mode, heat pump unit are in heating operation: second air inlet valve 111 and the second outlet valve are opened in controller control
121, first air inlet valve 91 and the first outlet valve 101 are closed, fresh air enters the air inlet by second air inlet 11
Chamber 8, fresh air pass through second air outlet 12 blowout after providing heat to the evaporation of second heat exchanger 5, and described first changes
The hot condensation of device 4 distributes heat, and the cold water in the water tank 2 enters the inside of the First Heat Exchanger 4 by the outlet pipe 22,
After cold water exchanges heat and is heated to be hot water, the water tank 2 is entered by the water inlet pipe 21, gives 2 accumulation of heat of water tank.In this way,
By the setting of the second air inlet and the second air outlet, the switching of air-valve is controlled by controller, protects the temperature of the water of water tank
It holds in range of set value, realizes the energy-efficient operation of constant-temperature heat pump unit；When especially in winter, heat pump unit is in refrigeration
Operation, the heat that First Heat Exchanger need to absorb Water in Water Tanks are evaporated, and therefore, opening water tank heat storage mode can ensure that heat pump machine
Group can operate normally at low ambient temperatures.
Above disclosed is only presently preferred embodiments of the present invention, cannot limit the right of the present invention with this certainly
Range, therefore according to equivalent variations made by scope of the present invention patent, it is still within the scope of the present invention.
Claims (13)
1. a kind of greenhouse constant-temperature heat pump unit, which is characterized in that including body and water tank, the inside of the body is equipped with compression
Machine, First Heat Exchanger, the second heat exchanger and blower fan module, the blower fan module by the inner cavity of the body be separated into air-out chamber and
Two parts up and down of air-inlet cavity, the suction side of the blower fan module are connected to the air-inlet cavity, the positive pressure side of the blower fan module
It is connected to the air-out chamber, the compressor, First Heat Exchanger and the second heat exchanger are fixedly mounted in the air-inlet cavity, institute
The second heat exchanger is stated close to the suction side of the blower fan module, the air-inlet cavity is equipped with the first air inlet with air communication in greenhouse
Mouthful, first air inlet is located at the lower section of second heat exchanger, and the air-out chamber is equipped with the with air communication in greenhouse
One air outlet, first air inlet are equipped with the first air inlet valve, and first air outlet is equipped with the first outlet valve；The water tank is set
It sets in the outside of the body, and the water tank is equipped with water inlet pipe and outlet pipe, the water inlet pipe and the First Heat Exchanger
Water inlet connection, the outlet pipe are connect with the water outlet of the First Heat Exchanger.
2. greenhouse constant-temperature heat pump unit as described in claim 1, which is characterized in that the air-inlet cavity is equipped with to be connected with outside air
The second logical air inlet, second air inlet are located at the lower section of second heat exchanger, and the air-out chamber is equipped with and external world's sky
Second air outlet of gas connection, second air inlet are equipped with the second air inlet valve, and second air outlet is equipped with the second outlet valve.
3. greenhouse constant-temperature heat pump unit as described in claim 1, which is characterized in that further include for detecting the dioxy in greenhouse
Change the carbon dioxide sensor of concentration of carbon.
4. greenhouse constant-temperature heat pump unit as claimed in claim 3, which is characterized in that further include controller, the controller with
The carbon dioxide sensor electrical connection, the controller can be controlled according to the signal that the carbon dioxide sensor detects
Make the switch of the first air inlet valve, the first outlet valve, the second air inlet valve and the second outlet valve.
5. greenhouse constant-temperature heat pump unit as described in claim 1, which is characterized in that second heat exchanger is obliquely arranged in
The suction side of the blower fan module, and the periphery of second heat exchanger and the inner cavity of the body cooperate fixation.
6. greenhouse constant-temperature heat pump unit as described in claim 1, which is characterized in that first air inlet passes through wind inlet channel
It is connected with greenhouse, first air outlet is connected by exhaust air flue with greenhouse.
7. greenhouse constant-temperature heat pump unit as described in claim 1, which is characterized in that the water tank is equipped with insulating layer.
8. a kind of control method using the described in any item greenhouse constant-temperature heat pump units of claim 1 to 7, which is characterized in that
When heating to greenhouse inside: heat pump unit is in refrigerating operaton, opens first air inlet valve and the first outlet valve,
The cold air of greenhouse enters the air-inlet cavity by first air inlet by wind inlet channel, and the First Heat Exchanger passes through suction
The heat for receiving the Water in Water Tanks is evaporated, second heat exchanger condensation distribute heat and with enter the cold of the air-inlet cavity
Air exchanges heat, after cold air is heated to be hot-air, by the blower fan module through first air outlet and outlet air wind
Road is conveyed to greenhouse heat, after the air in greenhouse reaches heating target temperature, stops heat pump unit operation；
When freezing to greenhouse inside: heat pump unit is in heating operation, opens first air inlet valve and the first outlet valve,
The hot-air of greenhouse enters the air-inlet cavity by first air inlet by wind inlet channel, and the First Heat Exchanger condensation dissipates
Heat is transmitted to the water tank heat storage by heat, in hot-air of second heat exchanger by being absorbed into the air-inlet cavity heat into
Row evaporation, hot-air are absorbed heat cooling as after cold air, cold air is by the blower fan module through first air outlet
It is conveyed to greenhouse cooling with exhaust air flue, after the air in greenhouse reaches refrigeration target temperature, stops heat pump unit operation.
9. the control method of greenhouse constant-temperature heat pump unit as claimed in claim 8, which is characterized in that the air-inlet cavity be equipped with
Second air inlet of outside air connection, second air inlet are located at the lower section of second heat exchanger, and the air-out chamber is set
There is the second air outlet being connected to outside air, second air inlet is equipped with the second air inlet valve, and second air outlet is equipped with
Second outlet valve；
When being heated to greenhouse inside, when carbon dioxide sensor detects that the gas concentration lwevel in greenhouse is more than setting value
When, first outlet valve and the second air inlet valve are opened, first air inlet valve and the second outlet valve are closed, fresh air passes through described
Second air inlet enters the air-inlet cavity, and the First Heat Exchanger is evaporated by absorbing the heat of the Water in Water Tanks, institute
It states the condensation of the second heat exchanger to distribute heat and exchange heat with the fresh air for entering the air-inlet cavity, fresh air is heated to be hot-air
Afterwards, hot-air is conveyed to greenhouse heat through first air outlet and exhaust air flue by the blower fan module, when in greenhouse
After air reaches heating target temperature, stop heat pump unit operation.
10. the control method of greenhouse constant-temperature heat pump unit as claimed in claim 9, which is characterized in that when the air in greenhouse
After reaching heating target temperature, when carbon dioxide sensor detects the gas concentration lwevel in greenhouse still above setting value, open
First outlet valve and the second air inlet valve are opened, first air inlet valve and the second outlet valve is closed, opens the blower fan module,
When carbon dioxide sensor detects the gas concentration lwevel in greenhouse lower than setting value, the blower fan module is closed.
11. the control method of greenhouse constant-temperature heat pump unit as claimed in claim 8, which is characterized in that the air-inlet cavity is equipped with
The second air inlet being connected to outside air, second air inlet are located at the lower section of second heat exchanger, the air-out chamber
Equipped with the second air outlet being connected to outside air, second air inlet is equipped with the second air inlet valve, and second air outlet is set
There is the second outlet valve；
When freezing to greenhouse inside, when carbon dioxide sensor detects that the gas concentration lwevel in greenhouse is more than setting value
When, first outlet valve and the second air inlet valve are opened, first air inlet valve and the second outlet valve are closed, fresh air passes through described
Second air inlet enters the air-inlet cavity, and heat is transmitted to the water tank heat storage by First Heat Exchanger condensation heat dissipation, and described the
Heat is evaporated in fresh air of two heat exchangers by being absorbed into the air-inlet cavity, and it is cold air that fresh air, which is absorbed heat cooling,
Afterwards, greenhouse cooling is conveyed to through first air outlet and exhaust air flue by the blower fan module, when the air in greenhouse reaches
To after refrigeration target temperature, stop heat pump unit operation.
12. the control method of greenhouse constant-temperature heat pump unit as claimed in claim 11, which is characterized in that when the air in greenhouse
After reaching refrigeration target temperature, when carbon dioxide sensor detects the gas concentration lwevel in greenhouse still above setting value, open
First outlet valve and the second air inlet valve are opened, first air inlet valve and the second outlet valve is closed, opens the blower fan module,
When carbon dioxide sensor detects the gas concentration lwevel in greenhouse lower than setting value, the blower fan module is closed.
13. the control method of greenhouse constant-temperature heat pump unit as claimed in claim 8, which is characterized in that the air-inlet cavity is equipped with
The second air inlet being connected to outside air, second air inlet are located at the lower section of second heat exchanger, the air-out chamber
Equipped with the second air outlet being connected to outside air, second air inlet is equipped with the second air inlet valve, and second air outlet is set
There is the second outlet valve；
After the air in greenhouse realizes constant temperature, and when the water tank heat storage scarce capacity, water tank heat storage mode, heat pump are opened
Unit is in heating operation, opens second air inlet valve and the second outlet valve, closes first air inlet valve and the first outlet air
Valve, fresh air enters the air-inlet cavity by second air inlet, after fresh air provides heat to the evaporation of second heat exchanger
It is blown out by second air outlet, the First Heat Exchanger condensation distributes heat, and the cold water in the water tank goes out described in
Water pipe enters the inside of the First Heat Exchanger, after cold water exchanges heat and is heated to be hot water, by described in water inlet pipe entrance
Water tank gives the water tank heat storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811229429.2A CN109654611A (en) | 2018-10-22 | 2018-10-22 | A kind of greenhouse constant-temperature heat pump unit and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811229429.2A CN109654611A (en) | 2018-10-22 | 2018-10-22 | A kind of greenhouse constant-temperature heat pump unit and its control method |
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| CN109654611A true CN109654611A (en) | 2019-04-19 |
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ID=66110325
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| CN201811229429.2A Pending CN109654611A (en) | 2018-10-22 | 2018-10-22 | A kind of greenhouse constant-temperature heat pump unit and its control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114532123A (en) * | 2022-03-01 | 2022-05-27 | 温州科技职业学院 | Low-cost fresh air device for agriculture based on difference in height |
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| CN1341834A (en) * | 2001-10-16 | 2002-03-27 | 陈志强 | Hot pump type air-conditioning water-heater |
| CN2727633Y (en) * | 2004-06-09 | 2005-09-21 | 广东科龙电器股份有限公司 | Double blast pipe heat pump water heater |
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