CN107192012A - Splitting heat pump air conditioner and the method for delaying its frosting - Google Patents
Splitting heat pump air conditioner and the method for delaying its frosting Download PDFInfo
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- CN107192012A CN107192012A CN201710304764.3A CN201710304764A CN107192012A CN 107192012 A CN107192012 A CN 107192012A CN 201710304764 A CN201710304764 A CN 201710304764A CN 107192012 A CN107192012 A CN 107192012A
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- value
- communication port
- gas communication
- setting value
- magnetic valve
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Classifications
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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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
Abstract
The embodiment of the present invention discloses a kind of splitting heat pump air conditioner, outdoor unit including controller and with compressor and outdoor heat converter, outdoor heat converter has gas communication port, gas communication port is connected by a four-way valve with the exhaust outlet or air inlet of compressor, it is additionally provided between the exhaust outlet of compressor and the gas communication port of outdoor heat converter on bypass line, bypass line and is provided with magnetic valve；Gas communication port is provided with baroceptor, the air pressure for detecting gas communication port；Controller receives the atmospheric pressure value Ps that baroceptor is detected in a heating mode, and the aperture of the atmospheric pressure value Ps electromagnetic valve for adjusting detected according to baroceptor, the air pressure of gas communication port is set to be more than or equal to setting atmospheric pressure value P0, outdoor unit frosting can effectively be delayed, therefore the present invention can solve the problem that the problem of how delaying outdoor unit frosting when splitting heat pump air conditioner is used for and heated.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of splitting heat pump air conditioner and the side for delaying its frosting
Method.
Background technology
Splitting heat pump air conditioner system is when heating, when outdoor environment temperature is below the freezing point, and the water in air steams
Gas will condense in heat exchanger surface, and change over time can form frost layer in heat exchanger surface, and frosting is directly increased and changed
Heat transfer resistance between the surface of hot device and moving air so that reduced by the rate of air circulation of heat exchanger, heat exchange efficiency reduction,
System heat exchange amount is caused to decline, the heating condition of system deteriorates, thus needs to take steps to defrosting.
In the prior art, occur to take measures to defrost again after frosting generally be directed to air-conditioner outdoor unit, typically take
The control model that indoor refrigeration outdoor is heated defrosts, therefore when frosting occurs for outdoor unit, can influence indoor heating effect, and
Defrosting process, equally can also have a strong impact on the heating effect of interior, reduce human comfort.
The content of the invention
A kind of method the embodiments of the invention provide splitting heat pump air conditioner and for delaying its frosting, it is intended to solve to work as
The problem of splitting heat pump air conditioner is used to how to delay outdoor unit frosting when heating.For some aspects of the embodiment to disclosure
There is a basic understanding, shown below is simple summary.The summarized section is not extensive overview, nor to determine to close
Key/important composition element or the protection domain for describing these embodiments.Its sole purpose is that some are presented with simple form is general
Read, in this, as the preamble of following detailed description.
First aspect according to embodiments of the present invention is there is provided a kind of splitting heat pump air conditioner, including controller and has
The outdoor unit of compressor and outdoor heat converter, outdoor heat converter has gas communication port, and gas communication port passes through a four-way
Valve is connected with the exhaust outlet or gas returning port of compressor, between the exhaust outlet of compressor and the gas communication port of outdoor heat converter also
It is provided with bypass line, bypass line and is provided with magnetic valve；Gas communication port is provided with baroceptor, for detecting gas
The air pressure of communication port；Controller receives the atmospheric pressure value Ps that baroceptor is detected in a heating mode, and according to air pressure sensing
The aperture for the atmospheric pressure value Ps electromagnetic valve for adjusting that device is detected, makes the air pressure of gas communication port be more than or equal to setting atmospheric pressure value P0.
P0 setting is associated with outdoor environment temperature.P0 value and outdoor environment temperature is inversely proportional.When outdoor environment temperature is higher,
When outdoor unit is not susceptible to frosting, it is smaller that P0 can be set, and when outdoor environment temperature is relatively low, outdoor unit is easy in heating operations
During generation frosting, it is larger that P0 can be set, can be with as long as the air pressure at outdoor heat converter gas communication port is more than P0
Judge that the pressure at gas communication port is larger, the surface temperature of outdoor heat converter is higher, and outdoor unit is not susceptible to frosting.
Second aspect according to embodiments of the present invention is used to delay the method for splitting heat pump air conditioner frosting there is provided a kind of,
Splitting heat pump air conditioner includes the outdoor unit with compressor and outdoor heat converter, and outdoor heat converter has gas circulation
Mouthful, gas communication port connect by the high pressure gas body mouthful or gas returning port of a four-way valve and compressor, the exhaust outlet of compressor with
It is additionally provided between the gas communication port of outdoor heat converter on bypass line, bypass line and is provided with magnetic valve；Method includes：
The atmospheric pressure value Ps of gas communication port is detected in a heating mode；According to the aperture of atmospheric pressure value Ps electromagnetic valve for adjusting, gas is set to circulate
The air pressure of mouth is more than or equal to setting atmospheric pressure value P0.
In the present invention, in operation of air conditioner heating mode, the gas communication port and the return-air of compressor of outdoor heat converter
Mouth connection, the exhaust outlet of compressor and the gas communication port of outdoor heat converter are additionally provided with bypass line, therefore compressor is arranged
High temperature and high pressure gas at gas port can be flowed to by bypass line to be set on the gas communication port of outdoor heat converter, bypass line
Magnetic valve is equipped with, the aperture of controller electromagnetic valve for adjusting controls to flow to the gas of outdoor heat converter from exhaust outlet of compressor
The flow of the high temperature and high pressure gas of communication port, makes the air pressure of gas communication port be more than or equal to setting atmospheric pressure value P0, therefore, it is possible to
Make the pressure of the gas communication port of outdoor heat converter remain at a higher scope, make pressure inside outdoor heat converter
Power is larger, and surface temperature is higher, effectively delays outdoor unit frosting, therefore the present invention can solve the problem that when splitting heat pump air conditioner is used for
The problem of how delaying outdoor unit frosting when heating.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the present invention
Example, and for explaining principle of the invention together with specification.
Fig. 1 is the structural representation of the splitting heat pump air conditioner of the embodiment of the present invention；
Fig. 2 is the structural representation of the controller of the splitting heat pump air conditioner of the embodiment of the present invention；
Fig. 3 is the method flow diagram for being used to delay splitting heat pump air conditioner frosting of the embodiment of the present invention；
Fig. 4 is the method flow diagram for being used to delay splitting heat pump air conditioner frosting of the embodiment of the present invention.
Description of reference numerals：10th, controller；11st, computing unit；12nd, judging unit；13rd, adjustment unit；20th, compressor；
21st, exhaust outlet；22nd, gas returning port；30th, four-way valve；40th, outdoor heat converter；41st, gas communication port；42nd, inlet；50th, air pressure
Sensor；60th, magnetic valve；70th, indoor heat converter；71st, air inlet；72nd, liquid outlet.
Embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Embodiment only represents possible change.Unless explicitly requested, otherwise single components and functionality is optional.One
The part of a little embodiments and feature can be included in or replace part and the feature of other embodiments.The implementation of the present invention
The scope of scheme includes the gamut of claims, and claims all obtainable equivalents.Herein
In, each embodiment individually or can be represented generally with term " invention ", and it is convenient that this is used for the purpose of, and if thing
The invention more than one is disclosed in reality, the scope for being not meant to automatically limit the application is any single invention or invention structure
Think.Herein, such as first and second or the like relational terms are used only for distinguishing an entity and another entity
Come, without requiring or implying between these entities there is any actual relation or order.Moreover, term " comprising ", " bag
Containing " or any other variant thereof is intended to cover non-exclusive inclusion, so that not only including that including a series of key elements
A little key elements, but also other key elements including being not expressly set out.Each embodiment herein is described by the way of progressive, often
What individual embodiment was stressed is all the identical mutual coherent of similar portion between the difference with other embodiment, each embodiment
See.For structure, product etc. disclosed in embodiment, because it is corresponding with part disclosed in embodiment, so retouching
That states is fairly simple, and related part is referring to method part illustration.
First embodiment of the invention provides a kind of splitting heat pump air conditioner, including controller 10 and with compressor 20 and room
The outdoor unit of outer heat-exchanger 40, outdoor heat converter 40 has gas communication port 41, and gas communication port 41 passes through a four-way valve
30 connect with the exhaust outlet 21 or gas returning port 22 of compressor 20, the exhaust outlet 21 of compressor 20 and the gas of outdoor heat converter 40
It is additionally provided between communication port 41 on bypass line, bypass line and is provided with magnetic valve 60；Gas communication port 41 is provided with air pressure
Sensor 50, for detecting the air pressure at gas communication port 41；Controller 10 receives baroceptor 50 and examined in a heating mode
The atmospheric pressure value Ps measured, and the aperture of the atmospheric pressure value Ps electromagnetic valve for adjusting 60 detected according to baroceptor 50.
Wherein, P0 setting is associated with outdoor environment temperature.P0 value and outdoor environment temperature is inversely proportional.Work as outdoor
Environment temperature is higher, when outdoor unit is not susceptible to frosting, and it is smaller that P0 can be set, and when outdoor environment temperature is relatively low, heats
When easily frosting occurs for outdoor unit in journey, it is larger that P0 can be set, as long as at the gas communication port 41 of outdoor heat converter 40
Air pressure be more than P0 when, it is possible to determine that the pressure at gas communication port 41 is larger, and the surface temperature of outdoor heat converter 40 is higher,
Outdoor unit is not susceptible to frosting.
Wherein, P0 span is refrigerant saturation evaporating temperature Ts corresponding evaporating pressure, saturation at 0~2 DEG C
Evaporating temperature Ts refers to the temperature under refrigerant air-liquid saturation state.P0 value is related to the species of selected refrigerant.No
Same refrigerant, P0 value is different, such as R22 refrigerants, when its Ts is 0 DEG C, and corresponding pressure value is 0.35Mpa.
In the present invention, in operation of air conditioner heating mode, the gas communication port 41 of outdoor heat converter 40 passes through four-way valve
30 are connected with the gas returning port 22 of compressor 20, and the exhaust outlet 21 of compressor 20 is gone back with the gas communication port 41 of outdoor heat converter 40
Outdoor heat can be flowed to by bypass line by being provided with the high temperature and high pressure gas at bypass line, therefore the exhaust outlet 21 of compressor 20
Magnetic valve 60 is provided with the gas communication port 41 of exchanger 40, bypass line, controller 10 is used to receive baroceptor 50
The pressure at gas communication port 41 detected, controller 10 is additionally operable to the aperture of electromagnetic valve for adjusting 60, that is, controlled from compressor
20 exhaust outlets 21 flow to the flow of the high temperature and high pressure gas of the gas communication port 41 of outdoor heat converter 40, make gas communication port 41
Air pressure be more than or equal to setting atmospheric pressure value P0, therefore, it is possible to make outdoor heat converter 40 gas communication port 41 pressure all the time
A higher scope is maintained at, makes that the internal pressure of outdoor heat converter 40 is larger, surface temperature is higher, effectively delays outdoor unit
Frosting, therefore the present invention can solve the problem that the problem of how delaying outdoor unit frosting when splitting heat pump air conditioner is used for and heated.
As shown in figure 1, a kind of splitting heat pump air conditioner of the present embodiment, including controller 10, compressor 20, four-way valve
30th, under outdoor heat converter 40, indoor heat converter 70, baroceptor 50 and magnetic valve 60, heating mode, compressor 20
Gas returning port 22 is connected by four-way valve 30 with the gas communication port 41 of outdoor heat converter 40, and the exhaust outlet 21 of compressor 20 passes through
Four-way valve 30 is connected with the air inlet 71 of indoor heat converter 70, and the liquid outlet 72 of indoor heat converter 70 passes through choke valve (figure
Not shown in) be connected with the inlet 42 of outdoor heat converter 40, therefore under heating mode, outdoor heat converter 40 is used as evaporation
Device, indoor heat converter 70 is used as condenser, the gas communication port 41 of outdoor heat converter 40 and the exhaust outlet 21 of compressor 20
Between be provided with bypass line, bypass line and be provided with magnetic valve 60, the gas communication port 41 of outdoor heat converter 40 is set
There is baroceptor 50, for detecting the air pressure at gas communication port 41, controller 10 receives air pressure sensing in a heating mode
The atmospheric pressure value Ps that device 50 is detected, and the aperture of the atmospheric pressure value Ps electromagnetic valve for adjusting 60 detected according to baroceptor 50, make
The air pressure of gas communication port 41 is more than or equal to setting atmospheric pressure value P0.
Wherein, setting atmospheric pressure value P0 setting is as described above, here is omitted, in the present embodiment, when air conditioner is used
When heating, the exhaust outlet 21 of compressor 20 is connected with the air inlet 71 of indoor heat converter 70, the gaseous coolant of HTHP
Release heat is used to heat in heat exchanger 70 indoors, and the liquid outlet 72 of indoor heat converter 70 passes through choke valve and outdoor heat
The inlet 42 of exchanger 40 is connected, and the liquid refrigerants of normal temperature and pressure absorbs heat gasification in outdoor heat converter 40, and leads to
Cross four-way valve 30 to be compressed and reuse inside the entrance compressor 20 of gas returning port 22 of compressor 20, because outdoor heat is handed over
Parallel operation 40 is used to absorb heat, and when refrigerant pressure is relatively low in outdoor heat converter 40, temperature is relatively low in outdoor heat converter 40,
The surface of outdoor heat converter 40 easily occurs in frosting, the present embodiment, in the exhaust outlet 21 and gas communication port 41 of compressor 20
Between be provided with bypass line, be provided with magnetic valve 60 on bypass line, the aperture of magnetic valve 60 is adjustable, at gas communication port 41
Baroceptor 50 is additionally provided with, baroceptor 50 is used to detect under the air pressure Ps at gas communication port 41, heating mode, control
Device 10 processed is additionally operable to receive Ps, and according to the aperture of Ps electromagnetic valve for adjusting 60, makes the air pressure at gas communication port 41 be more than or wait
In setting atmospheric pressure value P0, the air pressure at gas communication port 41 is made to remain at a higher scope, because refrigerant is from room
Flowed at the inlet 42 of outer heat-exchanger 40 at gas communication port 41, and refrigerant is to flow under pressure, therefore work as room
When pressure at the gas communication port 41 of outer heat-exchanger 40 is higher, pressure at the inlet 42 of outdoor heat converter 40 also compared with
Height, makes that the pressure in outdoor heat converter 40 is higher, and temperature is higher, effectively delays outdoor unit frosting.
In the above-described embodiments, the atmospheric pressure value Ps electromagnetic valve for adjusting 60 that controller 10 is detected according to baroceptor 50
Aperture has numerous embodiments, as an alternative embodiment, the gas that controller 10 is detected according to baroceptor 50
The aperture of pressure differential deltap P electromagnetic valve for adjusting 60 between pressure value Ps and setting atmospheric pressure value P0.Controller 10 is according between Ps and P0
The aperture of pressure differential deltap P electromagnetic valve for adjusting 60, makes control method calculate simple, easy to control.
Optionally, in the above-described embodiments, as shown in Fig. 2 controller 10 also includes：Computing unit 11, for calculating gas
Pressure differential deltap P between atmospheric pressure value Ps and setting atmospheric pressure value P0 that pressure sensor 50 is detected；Judging unit 12, for judging pressure difference
Region where Δ P；With adjustment unit 13, for magnetic valve 60 to be adjusted to the aperture corresponding to pressure differential deltap P regions.
In the present embodiment, pressure differential deltap P is calculated by computing unit 11, then by judging unit 12, judges pressure differential deltap P places
Region, finally according to the aperture of the region electromagnetic valve for adjusting 60 where pressure differential deltap P, therefore pass through computing unit 11, judge single
Member 12 and adjustment unit 13, controller 10 can be according to the aperture of pressure differential deltap P electromagnetic valve for adjusting 60, and can guarantee that magnetic valve 60
Aperture is corresponding with the region where pressure differential deltap P.
Optionally, in the above-described embodiments, adjustment unit 13 adjusts magnetic valve 60 corresponding to pressure differential deltap P regions
The embodiment of aperture have a variety of, as an alternative embodiment, when pressure differential deltap P is more than or equal to the first setting value A1
When, adjustment unit 13 closes magnetic valve 60；When pressure differential deltap P is less than the first setting value A1 but more than or equal to the second setting value A2
When, the aperture regulation of magnetic valve 60 is 1/4 by adjustment unit 13；When pressure differential deltap P is less than the second setting value A2 but is more than or equal to
During the 3rd setting value A3, the aperture regulation of magnetic valve 60 is 1/2 by adjustment unit 13；When pressure differential deltap P is less than the 3rd setting value A3
But during more than or equal to the 4th setting value A4, the aperture regulation of magnetic valve 60 is 3/4 by adjustment unit 13；When pressure differential deltap P is less than
During the 4th setting value A4, adjustment unit 13 is fully open by magnetic valve 60；Wherein, A1 ＞ A2 ＞ A3 ＞ A4 ＞ 0.Wherein A1 can be with
Value is carried out between 0.04~0.05Mpa, A1 value is relevant with the safe temperature of evaporator saturation temperature, when gas circulation
When temperature and saturation evaporating temperature Ts difference at mouth 41 are more than or equal to safe temperature, the surface of outdoor heat converter 40 affirmative is not
Can occur frosting, wherein safe temperature typically takes 4~5 DEG C, and it is too low that safe temperature takes, it is impossible to ensure to work as gas communication port 41
When the temperature at place is more than or equal to safe temperature with saturation evaporating temperature Ts difference, the surface of outdoor heat converter 40 will not be sent out certainly
Raw frosting, it is too high that safe temperature takes, then can have a strong impact on the heating effect of air-conditioning；A1 is the corresponding refrigerant of safe temperature
Pressure, when pressure differential deltap P is more than or equal to A1, illustrates that the pressure at gas communication port 41 is very high, now outdoor heat converter 40
Also will not occur frosting, it is not necessary to which the gaseous state to conveying HTHP at gas communication port 41 at the exhaust outlet 21 of compressor 20 is cold
Matchmaker, therefore adjustment unit 13 closes magnetic valve 60；A2 value sets corresponding with safe temperature with the opening amount region of magnetic valve 60
Refrigerant pressure it is relevant, in the present embodiment, magnetic valve 60 be provided with 4 different apertures, the corresponding system of safe temperature
The pressure of cryogen is 0.04~0.05Mpa, aperture interval correspondence 0.01Mpa~0.0125Mpa of magnetic valve 60 pressure
Adjustment region, therefore A2 can carry out value within the scope of A1 subtracts a pressure regulation area, such as A2 can be
Value between 0.03~0.04Mpa, when pressure differential deltap P is less than A1, and more than or equal to A2, illustrates at current gas communication port 41
Although pressure is higher, still it is impossible to meet the requirement of frost-free, the aperture regulation of magnetic valve 60 is 1/ by adjustment unit 13
4, the less high pressure gaseous refrigerant of control conveying, it becomes possible to reach the requirement more than or equal to setting atmospheric pressure value P0, make gas
Pressure at body communication port 41 is consistently greater than or equal to P0, delays outdoor unit frosting；Wherein A3 can subtract two pressure in A1
Value is carried out within the scope of adjustment region, such as A3 can carry out value between 0.02~0.03Mpa, when pressure differential deltap P is small
In the second setting value A2 but more than or equal to the 3rd setting value A3 when, illustrate that the pressure at current gas communication port 41 is relatively low, because
The aperture regulation of magnetic valve 60 is 1/2 by this adjustment unit 13, is made and being discharged at the exhaust outlet 21 of compressor 20 to gas communication port 41
More high pressure gaseous refrigerant, makes the pressure at gas communication port 41 be consistently greater than or equal to P0, delays outdoor unit frosting；
Wherein A4 can carry out value within the scope of A3 subtracts three adjustment regions, and such as A3 can enter between 0~0.02Mpa
Row value, when pressure differential deltap P is less than the 3rd setting value A3 but is more than or equal to the 4th setting value A4, illustrates at gas communication port 41
Pressure it is very low, adjustment unit 13 by the aperture regulation of magnetic valve 60 be 3/4, make the pressure at gas communication port 41 be consistently greater than
Or equal to P0, delay outdoor unit frosting；When pressure differential deltap P is less than A4, it is believed that the pressure at gas communication port 41 is extremely low, and regulation is single
Member 13 is fully open by magnetic valve 60, to a large amount of high pressure gaseous of supplement at gas communication port at the exhaust outlet 21 of compressor 20
Refrigerant, makes the pressure at gas communication port 41 be consistently greater than or equal to P0, delays outdoor unit frosting.
Optionally, in any of the above-described embodiment, in addition to temperature sensor (not shown), the temperature sensor
Near the gas communication port 41, for detecting the temperature Te at gas communication port 41, the controller 10 is additionally operable to root
A1, A2, A3 and A4 value are adjusted according to Te and saturation evaporating temperature Ts difference DELTA T.As an alternative embodiment, Δ
The value of A1, A2, A3 and A4 when the value of A1, A2, A3 and A4 during T >=0 are respectively smaller than Δ T ＜ 0.It is further alternative,
As Δ T >=0, A1 values 0.04Mpa, A2 value 0.03Mpa, A3 value 0.02Mpa, A4 value 0Mpa；As Δ T ＜ 0, A1
Value 0.05Mpa, A2 value 0.04Mpa, A3 value 0.03Mpa, A4 value 0.02Mpa.In the present embodiment, controller 10 is gone back
A1, A2, A3 and A4 value can be adjusted according to Te and Ts difference, makes the control of air-conditioning more accurate.Wherein Δ T=Te-
Ts。
Second embodiment of the invention discloses a kind of side for being used to delay the splitting heat pump air conditioner in any of the above-described embodiment
Method, as shown in figure 3, the control method includes：
Step S301：The atmospheric pressure value Ps of gas communication port is detected in a heating mode.
Step S302：According to the aperture of atmospheric pressure value Ps electromagnetic valve for adjusting.
Wherein, setting atmospheric pressure value P0 setting is as described above, here is omitted.In the present invention, heated in operation of air conditioner
During pattern, the gas communication port of outdoor heat converter is connected by four-way valve with the gas returning port of compressor, the exhaust outlet of compressor
The high temperature and high pressure gas energy at bypass line, therefore exhaust outlet of compressor is additionally provided with the gas communication port of outdoor heat converter
Enough flowed to by bypass line and be provided with magnetic valve on the gas communication port of outdoor heat converter 40, bypass line, air-conditioning passes through
Step S301 detects the atmospheric pressure value PS at gas communication port in a heating mode, then opening by step S302 electromagnetic valve for adjusting
Degree, makes the air pressure of gas communication port be more than or equal to setting atmospheric pressure value P0, therefore, it is possible to make the gas communication port of outdoor heat exchange 0
Pressure remain at a larger scope, make that outdoor heat converter internal pressure is larger, surface temperature is higher, effectively prolongs
Slow outdoor unit frosting, therefore the present invention can solve the problem that how to delay outdoor unit frosting when splitting heat pump air conditioner is used for and heated
Problem.
Optionally, in the above-described embodiments, step S302 also includes：According between atmospheric pressure value Ps and setting atmospheric pressure value P0
The aperture of pressure differential deltap P electromagnetic valve for adjusting.Air-conditioning makes controlling party according to the aperture of the pressure differential deltap P electromagnetic valve for adjusting between PS and P0
Method calculates simple, easy to control.
Optionally, in the above-described embodiments, as shown in figure 4, step S302 also includes：
Step S3021：Calculate the pressure differential deltap P between atmospheric pressure value Ps and setting atmospheric pressure value P0.
Step S3022：Judge the region where pressure differential deltap P.
Step S3023：By electromagnetism valve regulation to the aperture corresponding to pressure differential deltap P regions.
In the present embodiment, air-conditioning can calculate pressure differential deltap P by step S3021, can interpolate that by step S3022
The region gone out where pressure differential deltap P, by step S3023 can also according to the aperture of the region electromagnetic valve for adjusting where pressure differential deltap P,
Therefore by the present embodiment, air-conditioning can be according to the aperture of pressure differential deltap P electromagnetic valve for adjusting, and can guarantee that the aperture and pressure of magnetic valve
Region where poor Δ P is corresponding.
Optionally, in the above-described embodiments, step S3023 is specifically included：When pressure differential deltap P is more than or equal to the first setting value
During A1, magnetic valve is closed；When pressure differential deltap P is less than the first setting value A1 but is more than or equal to the second setting value A2, by magnetic valve
Aperture regulation be 1/4；When pressure differential deltap P is less than the second setting value A2 but is more than or equal to the 3rd setting value A3, by magnetic valve
Aperture regulation be 1/2；When pressure differential deltap P is less than the 3rd setting value A3 but is more than or equal to the 4th setting value A4, by magnetic valve
Aperture regulation be 3/4；It is when pressure differential deltap P is less than the 4th setting value A4, magnetic valve is fully open；Wherein, A1 ＞ A2 ＞ A3
＞ A4 ＞ 0.Wherein A1 setting when pressure differential deltap P is more than or equal to A1, illustrates gas stream as described above, here is omitted
Pressure at port 41 is very high, therefore magnetic valve 60 is closed in air-conditioning regulation, even if not to gas at the exhaust outlet 21 of compressor 20
The gaseous coolant of HTHP is conveyed at communication port 41, frosting will not also occur for outdoor heat converter 40；Wherein, A2 setting is such as
Upper described, here is omitted, when pressure differential deltap P is less than A1, and more than or equal to A2, illustrates the pressure at current gas communication port 41
Although power is it is impossible to meet the requirement of frost-free, also higher, therefore the aperture regulation of magnetic valve 60 is 1/4 by air-conditioning,
As long as the less high pressure gaseous refrigerant of conveying, it becomes possible to reach the requirement more than or equal to setting atmospheric pressure value P0, make gas
Pressure at communication port 41 is consistently greater than or equal to P0, delays outdoor unit frosting；Wherein, A3 setting is as described above, herein not
Repeat again, when pressure differential deltap P is less than the second setting value A2 but is more than or equal to the 3rd setting value A3, illustrate current gas communication port
Pressure at 41 is relatively low, and the aperture regulation of magnetic valve 60 is 1/2 by air-conditioning, is made at the exhaust outlet 21 of compressor 20 to gas communication port
The more high pressure gaseous refrigerant of 41 discharges, makes the pressure at gas communication port 41 be consistently greater than or equal to P0, delays outdoor
Machine frosting；Wherein A4 setting is as described above, here is omitted, when pressure differential deltap P is less than the 3rd setting value A3 but is more than or waits
In the 4th setting value A4, illustrate that the pressure at gas communication port 41 is very low, the aperture regulation of magnetic valve 60 is 3/4 by air-conditioning, order
Pressure at gas communication port 41 is consistently greater than or equal to P0, delays outdoor unit frosting；When pressure differential deltap P is less than A4, it is believed that gas
Pressure at body communication port 41 is extremely low, and air-conditioning is fully open by magnetic valve 60, airconditioning control at the exhaust outlet 21 of compressor 20 to
A large amount of high pressure gaseous refrigerants are supplemented at gas communication port, make the pressure at gas communication port 41 be consistently greater than or equal to P0,
Delay outdoor unit frosting.
Optionally, in any of the above-described embodiment, according to the temperature Te at gas communication port 41 and saturation evaporating temperature Ts
Difference DELTA T adjust A1, A2, A3 and A4 value.As an alternative embodiment, Δ T >=0 when A1, A2, A3 and A4
Value A1, A2, A3 and A4 when being respectively smaller than Δ T ＜ 0 value.It is further alternative, during Δ T >=0, A1 value 0.04Mpa,
A2 values 0.03Mpa, A3 value 0.02Mpa, A4 value 0Mpa；During Δ T ＜ 0, A1 values 0.05Mpa, A2 value 0.04Mpa,
A3 values 0.03Mpa, A4 value 0.02Mpa.In the present embodiment, taking for A1, A2, A3 and A4 is adjusted according to Te and Ts difference
Value, makes the control of air-conditioning more accurate.Wherein Δ T=Te-Ts.
It should be appreciated that the invention is not limited in the flow and structure for being described above and being shown in the drawings,
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim
System.
Claims (10)
1. a kind of splitting heat pump air conditioner, including controller and the outdoor unit with compressor and outdoor heat converter, the room
Outer heat-exchanger has gas communication port, and the gas communication port is by a four-way valve and the exhaust outlet or return-air of the compressor
Mouth connection, it is characterised in that also set up between the exhaust outlet of the compressor and the gas communication port of the outdoor heat converter
Have and be provided with magnetic valve on bypass line, the bypass line；The gas communication port is provided with baroceptor, for detecting
The air pressure of the gas communication port；The controller receives the atmospheric pressure value that the baroceptor is detected in a heating mode
Ps, and the atmospheric pressure value Ps detected according to the baroceptor adjusts the aperture of the magnetic valve.
2. splitting heat pump air conditioner as claimed in claim 1, it is characterised in that the controller is according to the baroceptor
Pressure differential deltap P between the atmospheric pressure value Ps and the setting atmospheric pressure value P0 that detect adjusts the aperture of the magnetic valve.
3. splitting heat pump air conditioner as claimed in claim 2, it is characterised in that the controller includes：
Computing unit, for calculating the pressure between the atmospheric pressure value Ps and the setting atmospheric pressure value P0 that the baroceptor detects
Poor Δ P；
Judging unit, for judging the region where the pressure differential deltap P；With,
Adjustment unit, for by the electromagnetism valve regulation to corresponding to the pressure differential deltap P regions aperture.
4. splitting heat pump air conditioner as claimed in claim 3, it is characterised in that
When the pressure differential deltap P is more than or equal to the first setting value A1, the adjustment unit closes the magnetic valve；
When the pressure differential deltap P is less than the first setting value A1 but is more than or equal to the second setting value A2, the adjustment unit
It is 1/4 by the aperture regulation of the magnetic valve；
When the pressure differential deltap P is less than the second setting value A2 but is more than or equal to the 3rd setting value A3, the adjustment unit
It is 1/2 by the aperture regulation of the magnetic valve；
When the pressure differential deltap P is less than the 3rd setting value A3 but is more than or equal to the 4th setting value A4, the adjustment unit
It is 3/4 by the aperture regulation of the magnetic valve；
When the pressure differential deltap P is less than the 4th setting value A4, the adjustment unit is fully open by the magnetic valve；Its
In, A1 ＞ A2 ＞ A3 ＞ A4 ＞ 0.
5. splitting heat pump air conditioner as claimed in claim 4, it is characterised in that also include：
Temperature sensor, the temperature sensor is located at the gas communication port, the temperature Te for detecting gas communication port,
The controller is additionally operable to adjust the first setting value A1, the second setting according to the temperature Te and saturation evaporating temperature Ts difference
Value A2, the 3rd setting value A3 and the 4th setting value A4 value.
6. a kind of method for being used to delay splitting heat pump air conditioner frosting, it is characterised in that methods described includes：
The atmospheric pressure value Ps of the gas communication port is detected in a heating mode；
The aperture of the magnetic valve is adjusted according to the atmospheric pressure value Ps.
7. method as claimed in claim 5, it is characterised in that according between the atmospheric pressure value Ps and the setting atmospheric pressure value P0
Pressure differential deltap P adjust the aperture of the magnetic valve.
8. method as claimed in claim 6, it is characterised in that the pressure according between atmospheric pressure value Ps and setting atmospheric pressure value P0
The aperture of poor Δ P electromagnetic valve for adjusting, including：
Calculate the pressure differential deltap P between the atmospheric pressure value Ps and the setting atmospheric pressure value P0；
Judge the region where the pressure differential deltap P；With,
By the electromagnetism valve regulation to the aperture corresponding to the pressure differential deltap P regions.
9. method as claimed in claim 7, it is characterised in that it is described by electromagnetism valve regulation to corresponding to pressure differential deltap P locations
The aperture in domain, including：
When the pressure differential deltap P is more than or equal to the first setting value A1, the magnetic valve is closed；
When the pressure differential deltap P is less than the first setting value A1 but is more than or equal to the second setting value A2, by the magnetic valve
Aperture regulation be 1/4；
When the pressure differential deltap P is less than the second setting value A2 but is more than or equal to the 3rd setting value A3, by the magnetic valve
Aperture regulation be 1/2；
When the pressure differential deltap P is less than the 3rd setting value A3 but is more than or equal to the 4th setting value A4, by the magnetic valve
Aperture regulation be 3/4；
It is when the pressure differential deltap P is less than the 4th setting value A4, the magnetic valve is fully open；Wherein, A1 ＞ A2 ＞ A3
＞ A4 ＞ 0.
10. method as claimed in claim 9, it is characterised in that also include：
Set according to the difference of the temperature at gas communication port and saturation evaporating temperature regulation the first setting value A1, described second
Definite value A2, the 3rd setting value A3 and the 4th setting value A4 value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710304764.3A CN107192012B (en) | 2017-05-03 | 2017-05-03 | Split heat pump air conditioner and method for delaying frosting of split heat pump air conditioner |
| PCT/CN2018/082317 WO2018201851A1 (en) | 2017-05-03 | 2018-04-09 | Split heat pump air conditioner and method for delaying frosting thereon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710304764.3A CN107192012B (en) | 2017-05-03 | 2017-05-03 | Split heat pump air conditioner and method for delaying frosting of split heat pump air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107192012A true CN107192012A (en) | 2017-09-22 |
| CN107192012B CN107192012B (en) | 2020-07-07 |
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ID=59873360
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710304764.3A Active CN107192012B (en) | 2017-05-03 | 2017-05-03 | Split heat pump air conditioner and method for delaying frosting of split heat pump air conditioner |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107192012B (en) |
| WO (1) | WO2018201851A1 (en) |
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| WO2018201851A1 (en) * | 2017-05-03 | 2018-11-08 | 青岛海尔空调电子有限公司 | Split heat pump air conditioner and method for delaying frosting thereon |
| CN109737557A (en) * | 2018-12-21 | 2019-05-10 | 青岛海尔空调电子有限公司 | A kind of air-conditioner outdoor unit antifrost control method and system |
| CN110360712A (en) * | 2018-04-09 | 2019-10-22 | 珠海格力电器股份有限公司 | A kind of air conditioning control method, device, storage medium and air-conditioning |
| CN110594959A (en) * | 2019-09-18 | 2019-12-20 | 宁波奥克斯电气股份有限公司 | Air conditioner control method |
| CN111998444A (en) * | 2020-08-07 | 2020-11-27 | 深圳中集天达吉荣航空制冷有限公司 | Airplane ground air conditioning unit and defrosting method thereof |
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| WO2018201851A1 (en) * | 2017-05-03 | 2018-11-08 | 青岛海尔空调电子有限公司 | Split heat pump air conditioner and method for delaying frosting thereon |
| CN110360712A (en) * | 2018-04-09 | 2019-10-22 | 珠海格力电器股份有限公司 | A kind of air conditioning control method, device, storage medium and air-conditioning |
| CN110360712B (en) * | 2018-04-09 | 2020-05-26 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
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| CN110594959B (en) * | 2019-09-18 | 2021-04-16 | 宁波奥克斯电气股份有限公司 | Air conditioner control method |
| CN111998444A (en) * | 2020-08-07 | 2020-11-27 | 深圳中集天达吉荣航空制冷有限公司 | Airplane ground air conditioning unit and defrosting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018201851A1 (en) | 2018-11-08 |
| CN107192012B (en) | 2020-07-07 |
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| CB03 | Change of inventor or designer information |
Inventor after: Ma Yunhua Inventor after: Wang Bo Inventor after: Gu Chao Inventor after: Guo Defang Inventor before: Ma Yunhua Inventor before: Gu Chao Inventor before: Guo Defang |
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Effective date of registration: 20201106 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd. |