CN107940677A - A kind of control method and device for slowing down air-conditioner outdoor unit frosting - Google Patents
A kind of control method and device for slowing down air-conditioner outdoor unit frosting Download PDFInfo
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- CN107940677A CN107940677A CN201711049768.8A CN201711049768A CN107940677A CN 107940677 A CN107940677 A CN 107940677A CN 201711049768 A CN201711049768 A CN 201711049768A CN 107940677 A CN107940677 A CN 107940677A
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Abstract
The invention discloses a kind of control method for slowing down air-conditioner outdoor unit frosting, belong to air-conditioning technical field.Control method includes：Obtain outer coil temperature；Determine the temperature variations of outer coil temperature；When outer coil temperature is higher than outdoor dew-point temperature, and the rate temperature change of outer coil temperature increases, control unlatching slows down the operation of frosting device.The situation of change for the outer coil temperature that the control method that the present invention slows down air-conditioner outdoor unit frosting is detected according to defrosting sensor determines to slow down the operating status of frosting device, the change of the micro frosting situation of air-conditioning caused by the factors such as external environment condition can be taken into account, so as to so that slowing down the operating status of frosting device can match with actual defrosting demand, control is more accurate, ensure that operational energy efficiency of the air-conditioning under severe cold microthermal climate.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of control method and dress for slowing down air-conditioner outdoor unit frosting
Put.
Background technology
As the improvement of people's living standards, air-conditioning equipment has also come into huge numbers of families, domestic air conditioning, central air-conditioning
Use it is more and more common, requirement of the user for comfort of air conditioner is also higher and higher, existing during air-conditioning use to ask
Topic is also gradually spilt cruelly, one of them is exactly the problem of outdoor unit frosting when air-conditioning is run under harsh climate is freezed.
When air-conditioning is in the larger area operation in low temp area or wind and snow, the condenser outer surface institute condensation water of outdoor unit
Stream can be dropped onto on chassis, and in the case of air conditioner long-play, the condenser and chassis that can cause air conditioner freeze
Problem, the ice sheet condensed on outdoor unit can hinder the refrigerant of inside and the heat exchange of outdoor environment so that the refrigeration effect of air-conditioning
Rate declines, and in order to ensure the heating effect of air-conditioning, air-conditioning has to improve Power operation, this also results in the extra consumption of electric energy
With the raising of customer using cost.
The content of the invention
The present invention provides a kind of control method and device for slowing down air-conditioner outdoor unit frosting, it is intended to solves air-conditioner outdoor unit
Frosting ice formation issues when running in the winter time or under harsh climate.In order to which some aspects of the embodiment to disclosure have a base
This understanding, shown below is simple summary.The summarized section is not extensive overview, nor to determine key/critical group
Into element or describe the protection domains of these embodiments.Its sole purpose is that some concepts are presented with simple form, is made with this
For the preamble of following detailed description.
According to the first aspect of the invention, there is provided a kind of control method for slowing down air-conditioner outdoor unit frosting, including：Obtain
Take outer coil temperature；Determine the temperature variations of outer coil temperature；When outer coil temperature is higher than outdoor dew-point temperature, and external disk
During the rate temperature change increase of tube temperature degree, control unlatching slows down the operation of frosting device.
In a kind of optional embodiment, determining the temperature variations of outer coil temperature includes：Determine detection cycle
First temperature difference of current outer coil temperature and the first outer coil temperature acquired in previous order acquired in interior current order；
Determine the first outer coil temperature and second of the second outer coil temperature acquired in its previous order acquired in previous order
Temperature difference；According to the comparative result of the first temperature difference and the second temperature difference, the feelings of the rate temperature change of definite outer coil temperature
Condition.
In a kind of optional embodiment, according to the comparative result of the first temperature difference and the second temperature difference, external disk is determined
The temperature variations of tube temperature degree, including：When the first temperature difference is more than the second temperature difference, rate temperature change increase；When
When one temperature difference is less than the second temperature difference, rate temperature change reduces.
In a kind of optional embodiment, control method further includes：Obtain outside the 3rd when slowing down the operation of frosting device
Coil temperature；Determine the temperature variations of the 3rd outer coil temperature；When the 3rd outer coil temperature is higher than outdoor dew-point temperature, and
During the rate temperature change increase of the 3rd outer coil temperature, control is closed after slowing down frosting device operation setting duration.
In a kind of optional embodiment, control method further includes：When the 3rd outer coil temperature is higher than outdoor dew point temperature
Degree, and during the rate temperature change reduction of the 3rd outer coil temperature, control slows down the closing of frosting device.
According to the second aspect of the invention, a kind of control device for slowing down air-conditioner outdoor unit frosting is additionally provided, including：
First acquisition unit, for obtaining outer coil temperature；First determination unit, for determining the temperature change feelings of outer coil temperature
Condition；First control unit, for being higher than outdoor dew-point temperature when outer coil temperature, and the rate temperature change of outer coil temperature increases
When big, control unlatching slows down the operation of frosting device.
In a kind of optional embodiment, the first determination unit includes：First determination subelement, for determining detection week
First temperature difference of current outer coil temperature and the first outer coil temperature acquired in previous order in the phase acquired in current order
Value；Second determination subelement, for determining acquired in the first outer coil temperature and its previous order acquired in previous order
The second outer coil temperature the second temperature difference；3rd determination subelement, for according to the first temperature difference and the second temperature difference
Comparative result, determines the situation of the rate temperature change of outer coil temperature.
In a kind of optional embodiment, the 3rd determination subelement is specifically used for：When the first temperature difference is more than the second temperature
During difference, the increase of temperature rate of change；When the first temperature difference is less than the second temperature difference, temperature rate of change subtracts
It is small.
In a kind of optional embodiment, control method further includes：Second acquisition unit, slows down frosting dress for obtaining
Put the 3rd outer coil temperature during operation；Second determination unit, for determining the temperature variations of the 3rd outer coil temperature；The
Two control units, for being higher than outdoor dew-point temperature, and the temperature change speed of the 3rd outer coil temperature when the 3rd outer coil temperature
When rate increases, control is closed after slowing down frosting device operation setting duration.
In a kind of optional embodiment, the second control unit is additionally operable to：When the 3rd outer coil temperature is higher than outdoor dew
Point temperature, and during the rate temperature change reduction of the 3rd outer coil temperature, control slows down the closing of frosting device.
It is of the invention to be using beneficial effect possessed by above-mentioned technical proposal：
The outer coil temperature that the control method that the present invention slows down air-conditioner outdoor unit frosting is detected according to defrosting sensor
Situation of change determines to slow down the operating status of frosting device, can take into account the micro knot of air-conditioning caused by the factors such as external environment condition
The change of white situation, so as to so that slowing down the operating status of frosting device can match with actual defrosting demand, control
It is more accurate, it ensure that operational energy efficiency of the air-conditioning under severe cold microthermal climate.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Attached drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the present invention
Example, and for explaining the principle of the present invention together with specification.
Fig. 1 is the flow chart one of the control method of the present invention according to shown by an exemplary embodiment；
Fig. 2 is the flowchart 2 of the control method of the present invention according to shown by an exemplary embodiment；
Fig. 3 is the structure diagram one of the control device of the present invention according to shown by an exemplary embodiment；
Fig. 4 is the structure diagram two of the control device of the present invention according to shown by an exemplary embodiment；
Fig. 5 is the partial structural diagram of the air-conditioner outdoor unit of the present invention according to shown by an exemplary embodiment；
Fig. 6 is the structure diagram of the radiating piece of the present invention according to shown by an exemplary embodiment.
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.Other embodiments can include structure, logic, it is electric, process and other change.Embodiment
Only represent possible change.Unless explicitly requested, otherwise single components and functionality is optional, and the order operated can be with
Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The scope of bright embodiment includes the gamut of claims, and claims is all obtainable equivalent
Thing.Herein, 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 in fact disclosing the invention more than one, the scope for being not meant to automatically limit the application is any single invention
Or inventive concept.Herein, relational terms such as first and second and the like be used only for by an entity or operation with
Another entity or operation distinguish, and without requiring or implying, there are any actual relation between these entities or operation
Or order.Moreover, term " comprising ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that
So that process, method or equipment including a series of elements not only include those key elements, but also including being not explicitly listed
Other element, or further include as this process, method or the intrinsic key element of equipment.In the feelings not limited more
Under condition, the key element that is limited by sentence "including a ...", it is not excluded that in the process including the key element, method or equipment
In also there are other identical element.Each embodiment herein is described by the way of progressive, and each embodiment stresses
Be all difference with other embodiment, between each embodiment identical similar portion mutually referring to.For implementing
For method, product etc. disclosed in example, due to its with embodiment disclosed in method part it is corresponding, so the comparison of description is simple
Single, reference may be made to the description of the method.
Fig. 1 is the flow chart one of the control method of the present invention according to shown by an exemplary embodiment.
As shown in Figure 1, the present invention provides a kind of control method for slowing down air-conditioner outdoor unit frosting, available for air-conditioning in the winter
When working in the case of easily leading to outdoor unit frosting and freezing, it is clear that the micro frosting to air-conditioning carries out defrost for season or harsh climate
Remove, specifically, the process step of the control method includes：
S101, obtain outer coil temperature；
Exemplified by split-type air conditioner, split-type air conditioner includes indoor unit and outdoor unit, wherein, indoor unit be arranged at parlor,
The room areas such as bedroom, outdoor unit are then arranged at the outdoor areas such as skin, roof.Outdoor unit is equipped with defrosting sensor,
Defrosting sensor is located outside the outer coil pipe position of machine, can sense the temperature change of outer coil pipe, in this way, in step S101,
Outer coil temperature can detect to obtain by the temperature sensor, and join as the outer coil temperature of this control flow
Number.
Meanwhile outdoor unit is additionally provided with another outer temperature sensor, can be used for detecting outdoor environment temperature, in this way, air-conditioning
According to according to the outdoor environment temperature detected by outer temperature sensor, the condensation temperature under Current Temperatures situation is calculated.
Such as, in embodiment, a kind of calculation of optional solidifying dew-point temperature is as follows：
Tes=C × Tao- α,
Wherein：Tes is solidifying dew-point temperature, and Tao is outdoor environment temperature, and C is design factor, and α is constant.
Preferably, in the case where outdoor environment temperature Tao is less than 0 DEG C, the preferred value of design factor C is 0.8C；In room
In the case that external environment temperature Tao is greater than or equal to 0 DEG C, the preferred value of design factor C is 0.6.
α values are generally 6.
S102, the temperature variations for determining outer coil temperature；
Fig. 2 is the flowchart 2 of the control method of the present invention according to shown by an exemplary embodiment；Illustrated in fig. 2
In embodiment, the temperature variations of outer coil temperature are determined in step S102, its specific steps includes：
S201, determine acquired in current outer coil temperature in detection cycle acquired in current order and previous order the
First temperature difference of one outer coil temperature；
In the present embodiment, in the control flow that air-conditioning performs the present invention, the defrosting sensor of air-conditioning is not only to examine
Survey a single temperature value, but the coil temperature outside repeated detection in the detection cycle of setting, therefore, can be according to adjacent order
Detected outer coil temperature, calculates the temperature difference of two outer coil temperatures of adjacent order.
For example, in a certain optional embodiment, detection cycle is set as 2 minutes, in 2 minutes, at interval of 30s
Once outer coil temperature, the outer coil temperature parameter detected include 3.1 DEG C (0s moment) for detection, and 3 DEG C (during 30s
Carve), 2.7 DEG C (the 1st minute moment), 2.6 DEG C (the 1st point of 30s moment) and 2.4 DEG C (the 2nd minute moment)；In this manner it is possible to count
The temperature difference between the temperature value of adjacent order is calculated, obtained temperature difference is followed successively by 0.1 DEG C, 0.3 DEG C, 0.1 DEG C, 0.2 DEG C.
In step s 201, current order is by taking wherein n-th (n ＞ 2) a order as an example, such as with the in previous embodiment the 1st
Current order n of moment minute as this case, then the current outer coil temperature detected by n-th is 2.7 DEG C；Current order n
Previous order be n-1, then can determine that the first outer coil temperature that the (n-1)th order detects is 3 DEG C by above-described embodiment.
Therefore, first temperature difference of current outer coil temperature and the first outer coil temperature is may further determine that in step S201
It is worth for -0.3 DEG C.For the ease of the subsequently comparison to different temperature difference, the temperature difference calculated in step generally takes its absolute value,
I.e. on the occasion of.
S202, determine the first outer coil temperature acquired in previous order and the second external disk acquired in its previous order
Second temperature difference of tube temperature degree；
In the embodiment of abovementioned steps S201, previous order is the (n-1)th order, then the previous order of the (n-1)th order is
N-th -2 order, the second outer coil temperature detected by the n-th -2 order are 3.1 DEG C, therefore, can be further in step S202
Determine the first outer coil temperature and second of the second outer coil temperature acquired in its previous order acquired in previous order
Temperature difference is -0.1 DEG C.Similarly, go the second temperature difference on the occasion of 0.1 DEG C.
S203, the comparative result according to the first temperature difference and the second temperature difference, determine the temperature change speed of outer coil temperature
The situation of rate.
In the present embodiment, external disk is determined according to the comparative result of the first temperature difference and the second temperature difference in step S203
The situation of the rate temperature change of tube temperature degree, particularly may be divided into situations below：
When the first temperature difference is more than the second temperature difference, rate temperature change increase, i.e. outer coil temperature is at (n-1)th time
The temperature that range of temperature in sequence to the period of n-th sequence was more than in the period of the n-th -2 order to the (n-1)th order becomes
Change amplitude, at this point it is possible to determine that outer coil temperature temperature change is very fast, easily there is the problem of quick-frozen frosting in air-conditioner outdoor unit；
When the first temperature difference is less than the second temperature difference, rate temperature change reduces, i.e. outer coil temperature is at (n-1)th time
The temperature that range of temperature in sequence to the period of n-th sequence was less than in the period of the n-th -2 order to the (n-1)th order becomes
Change amplitude, at this point it is possible to determine the problem of outer coil temperature temperature change is slower, and air-conditioner outdoor unit is less prone to quick-frozen frosting.
Whether S103, judge outer coil temperature higher than outdoor dew-point temperature, if it is, performing step S104；
In embodiments of the present invention, if outer coil temperature is less than outdoor dew-point temperature, the frosting problem of air-conditioning is tighter
Weight, therefore can then perform step S106, enable default defrosting process flow operation.
Such as, enabled in step 106 air-conditioning it is default defrosting flow a kind of implementation be：Air-conditioning switches to refrigeration mode
Operation.When air-conditioning performs refrigeration mode, the flow direction of the high temperature refrigerant of the discharge of compressor is first to flow through outdoor heat exchanger, it
Afterwards, then indoor heat exchanger is flowed into, finally flows back into compressor, above-mentioned type of flow circulation carries out.In this way, flow through outdoor heat exchanger
High temperature refrigerant heat transfer to the outer surface of outdoor heat exchanger, its ice sheet condensed can be made to be melted into liquid water droplets drippage
Or directly distil, so as to fulfill the ice layer thickness of outdoor unit outer surface is reduced using the high temperature refrigerant heat of compressor, or even
The purpose of frost is removed completely.
S104, judge whether the rate temperature change of outer coil temperature increases, if it is, performing step S105；
In embodiments of the present invention, if outer coil temperature and rate temperature change do not increase, illustrate air-conditioning not
Easily there is the problem of micro frosting, at this time, air-conditioning can perform step S107, maintain air-conditioning heating mode operation.
S105, be higher than outdoor dew-point temperature when outer coil temperature, and during the rate temperature change increase of outer coil temperature, controls
Unlatching processed slows down the operation of frosting device.
In embodiment, the defrosting control method of the prior art is less than outdoor dew-point temperature primarily directed to outer coil temperature
When the outer temperature situation that easily freezes of air-conditioner outdoor unit, and have ignored outer coil temperature when being higher than outdoor dew-point temperature, outer coil pipe
The outer temperature changing condition of temperature change too fast (such as fast cooling), under this kind of outer warm changing condition, air-conditioner outdoor unit can also hold
Easily there is the problem of condensing micro frost, influence the heat exchange efficiency of air-conditioning, therefore, technical scheme is to propose one
The solution of outdoor unit frosting problem when kind is higher than outdoor dew-point temperature for outer coil temperature, outer coil temperature changes too fast is answered
To method.
In an embodiment of the present invention, it is of the invention in order to improve to slowing down the defrosting control accuracy during operation of frosting device
Control method further include：
S108, acquisition slow down the 3rd outer coil temperature during the operation of frosting device；
S109, the temperature variations for determining the 3rd outer coil temperature；
S110, be higher than outdoor dew-point temperature, and the rate temperature change of the 3rd outer coil temperature when the 3rd outer coil temperature
During increase, control is closed after slowing down frosting device operation setting duration.
S111, be higher than outdoor dew-point temperature, and the rate temperature change of the 3rd outer coil temperature when the 3rd outer coil temperature
During reduction, control slows down the closing of frosting device.
In the above-described embodiments, air-conditioning performs the judgement of the determination process and step S110 and S111 in step S109
Journey is referred to previous embodiment, and therefore not to repeat here.
Fig. 3 is the structure diagram one of the control device of the present invention according to shown by an exemplary embodiment.
As shown in figure 3, present invention also offers a kind of control device for slowing down air-conditioner outdoor unit frosting, which can
Carried out applied to the defrosting flow that the control method flow for slowing down air-conditioner outdoor unit frosting in above-described embodiment performs air-conditioning
Control to adjust, specifically, the control device 300 includes：
First acquisition unit 301, for obtaining outer coil temperature；
First determination unit 302, for determining the temperature variations of outer coil temperature；
First control unit 303, for being higher than outdoor dew-point temperature when outer coil temperature, and the temperature of outer coil temperature becomes
When changing speed increase, control unlatching slows down the operation of frosting device.
Control device of the present invention can determine to slow down according to the situation of change for the outer coil temperature that defrosting sensor detects
The operating status of frosting device, can take into account the change of the micro frosting situation of air-conditioning caused by the factors such as external environment condition, from
And the operating status for slowing down frosting device can be allow to match with actual defrosting demand, control is more accurate, ensure that
Operational energy efficiency of the air-conditioning under severe cold microthermal climate.
Fig. 4 is the structure diagram two of the control device of the present invention according to shown by an exemplary embodiment.
As shown in figure 4, present invention also offers a kind of control device for slowing down air-conditioner outdoor unit frosting, the control device
The defrosting flow that the control method flow for slowing down air-conditioner outdoor unit frosting that can be applied in above-described embodiment performs air-conditioning into
Row controls to adjust, specifically, the control device 400 includes first acquisition unit 410, the first determination unit 420 and the first control
Unit 430.
In embodiment, first acquisition unit 410, for obtaining the external disk tube temperature detected by outdoor defrosting sensor
Degree.
In embodiment, the first determination unit 420 includes the definite son single 422 and the 3rd of the first determination subelement 421, second
Determination subelement 423.
Wherein, the first determination subelement 421, for determining the current external disk tube temperature in detection cycle acquired in current order
First temperature difference of degree and the first outer coil temperature acquired in previous order；
Second determination subelement 422, for determining the first outer coil temperature acquired in previous order and its previous order
Second temperature difference of the second acquired outer coil temperature；
3rd determination subelement 423, for the comparative result according to the first temperature difference and the second temperature difference, determines outer coil pipe
The situation of the rate temperature change of temperature.
In embodiment, the 3rd determination subelement 423 is specifically used for：When the first temperature difference is more than the second temperature difference, really
Determine rate temperature change increase；When the first temperature difference is less than the second temperature difference, temperature rate of change reduces.
In embodiment, the first control unit 430 is used for when outer coil temperature is higher than outdoor dew-point temperature, and external disk tube temperature
During the rate temperature change increase of degree, control unlatching slows down the operation of frosting device.
In embodiments of the present invention, control device 400 further includes：
Second acquisition unit 440, slows down the 3rd outer coil temperature during the operation of frosting device for obtaining；
Second determination unit 450, for determining the temperature variations of the 3rd outer coil temperature；
Second control unit 460, for being higher than outdoor dew-point temperature, and the 3rd outer coil temperature when the 3rd outer coil temperature
Rate temperature change increase when, control slow down frosting device operation setting duration after close.
In embodiment, the second control unit 460 is additionally operable to：When the 3rd outer coil temperature is higher than outdoor dew-point temperature, and
When the rate temperature change of 3rd outer coil temperature reduces, control slows down the closing of frosting device.
In addition, realize technical scheme for the ease of those skilled in the art, preferably, present invention also offers
One kind slows down air-conditioning frosting device, and the concrete structure for slowing down air-conditioning frosting device is illustrated below.
Fig. 5 is the partial structural diagram of the air-conditioner outdoor unit of the present invention according to shown by an EXAMPLE Example.
As shown in figure 5, the outdoor unit for the air-conditioning that control method of the present invention and control device are applied mainly include compressor,
Between outdoor heat exchange and slow down the device of air-conditioner outdoor unit frosting, wherein, device mainly includes regenerative apparatus, radiating piece, ajutage
Outdoor heat exchanger can will be delivered to by the hot high temperature air of the waste-heat of compressor with component, devices such as driving devices, with
The zonule frosting of outdoor heat exchanger outer surface is eliminated in time, is prevented frosting problem from further deteriorating, is delayed frosting so as to reach,
Extend the heating operation time, lift the purpose of low-temperature heating effect.
Specifically, regenerative apparatus wraps up in the outside of at least part body arranged on compressor, for example, in embodiment, accumulation of heat
Device includes the case of tube structure, and the internal diameter of tube structure is greater than or equal to the outside diameter of compressor block, and case is sheathed on pressure
The outside of contracting machine, and form close fit with the shell body of compressor.
Preferably, when compressor is compressed work, heat caused by its compression chamber part is more, therefore, this hair
The case of bright regenerative apparatus can be sheathed on the compression chamber part of compressor.It should be appreciated that regenerative apparatus of the present invention
Structure type is not limited to tube structure, and those skilled in the art can be according to the needs of close fit, to the knot of regenerative apparatus
Structure carries out adaptive improvement, so as to the air passing space of closing be may be constructed between regenerative apparatus and compressor, to reduce pressure
The loss for the heat that contracting machine distributes, improves organic efficiency of the regenerative apparatus to heat of compressor, therefore should also cover in the present invention
Protection domain within.
In an embodiment of the present invention, regenerative apparatus is made of heat-storing material, as by heat-storing material intervolve into it is foregoing
Tube structure, optionally, the adsorptive heat-storage material of heat-storing material selection loose structure are made, such as zeolite, silica gel material.
In this way, the inside of tube structure can form the porous channel for air flow made of heat-storing material, easy to not
Flowing in space of the synthermal air in heat-storing material or between tube structure and the shell body of compressor.
In an embodiment of the present invention, radiating piece is arranged at outdoor heat exchanger, and has multiple heat emission holes, radiating piece tool
There is air flow passage, and air flow passage is connected with multiple heat emission holes；Radiating piece is connected by ajutage and regenerative apparatus
It is logical, in this way, the hot-air in regenerative apparatus by heating can be delivered to the air flow passage of radiating piece via ajutage, it
Afterwards, hot-air is blown out from heat emission hole, in this way, can change the surrounding environment of outdoor heat exchanger via the hot-air that heat emission hole is blown out
Temperature, raises outdoor heat exchanger ambient temperature, and the frost condensed on outdoor heat exchanger outer surface is absorbing surrounding environment
Melt after the heat of temperature or distil, so as to achieve the purpose that to eliminate the outer surface frosting of outdoor unit.
Fig. 6 is the structure diagram of the radiating piece of the present invention according to shown by an exemplary embodiment.
As shown in fig. 6, in embodiment, radiating piece is platy structure,
In a kind of optional technical solution, radiating piece is tabular or tubular structure, and radiating piece is set up in outdoor heat exchanger
At least side.
In a kind of optional technical solution, outdoor heat exchanger has U-shaped heat exchange pipeline section, and radiating piece has to exchange heat with U-shaped
The heat radiating flat tube of pipeline section position correspondence, one or more heat radiating flat tubes are intercalated on tabular or tubular structure.
In a kind of optional technical solution, heat emission hole includes the uniformly distributed heat dissipation micropore in each heat radiating flat tube.
In embodiment, the air flow order slowed down in the device of air-conditioner outdoor unit frosting is flowed to from regenerative apparatus
Radiating piece, therefore, to ensure the lasting progress of hot-air defrost process, is respectively equipped with out on the case of regenerative apparatus of the present invention
Air port and air inlet, wherein, air outlet is connected with ajutage, and the hot-air in regenerative apparatus is delivered to air-supply via air inlet
In pipe；Air inlet is then connected with the external environment condition of regenerative apparatus, to supplement the sky flowed out via air outlet from external environment condition
Gas.
In this way, sequence of flow of the air in regenerative apparatus is：Extraneous air enters the storage of regenerative apparatus via air inlet
In the porous space of hot material or in the space between tube structure and the shell body of compressor, afterwards, by the waste heat of compressor
The hot-air heated is discharged into ajutage by air outlet again.In this way, regenerative apparatus can be mended endlessly from air inlet
Cold air is filled, and the hot-air after heating is delivered to radiating piece via ajutage, with lasting to outdoor heat exchanger
White ice-melt.
Preferably, air outlet positioned at the position vertically above of air inlet, in this way, hot-air after heating is close due to itself
Degree reduces, thus gradually on float on the top of case, and enter via air outlet in air supply duct, newly filled into reducing air inlet
Cooling of the cold air on heated hot-air influence.
In embodiment, it is of the invention in order to provide the hot-air transfer efficiency for the device for slowing down air-conditioner outdoor unit frosting
Device is additionally provided with driving device, available for certain driving air-flow from regenerative apparatus via ajutage to radiating piece.
Optionally, driving device includes air blower, and in embodiment, the defeated air port of air blower is connected with air inlet, drum
Wind turbine can suck the Cryogenic air in external environment condition in the case where itself blade rotates the vacuum force produced, and be blown from defeated air port
To the air inlet of regenerative apparatus, air quantity is filled into improve regenerative apparatus.Meanwhile by varying the rotating speed of air blower, can be with
Change air supply velocity and air output that the present invention slows down the device of air-conditioner outdoor unit frosting, to meet not assimilating for outdoor heat exchanger
White demand.
In embodiment, the device of the invention for slowing down air-conditioner outdoor unit frosting further includes sensor and controller, wherein, pass
Sensor is used to detect outdoor environment temperature；Controller is electrically connected with sensor and driving device respectively, and controller is used to sense
When the outdoor environment temperature that device is detected meets defrosting temperature conditionss, driving device operation is opened in control.Therefore, sensor is passed through
With the detection deterministic process of controller, can be in outdoor heat exchanger may open defrosting function under the temperature conditionss of frosting,
The defeated wind pushing wind manipulation of driving device is opened, to slow down the frosting problem of outdoor heat exchanger；It is also possible to outdoor heat exchanger is not
In that may control closing defrosting function under the temperature conditionss of frosting, driving device is shut down, to reduce the extra power consumption of air-conditioning.
Present invention also offers a kind of air-conditioning, the outdoor unit of air-conditioning is equipped with any one of previous embodiment and slows down air conditioning chamber
The device of outer machine frosting.Using the air-conditioning of the device, can the quick defrost of heat exchanging device when there is slight frosting, delay frosting
Time, lifts low-temperature heating effect；Simultaneously as outdoor heat exchanger is to absorb heat from its external environment condition in a heating mode,
Therefore, the waste heat of compressor can also be delivered to outdoor heat exchanger by the device of the invention, so as to improve to more than compressor
Efficiency of utilization, enhances the heating performance of air-conditioning.
It should be appreciated that the invention is not limited in the flow and structure that are described above and are shown in the drawings,
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by appended claim
System.
Claims (10)
- A kind of 1. control method for slowing down air-conditioner outdoor unit frosting, it is characterised in that including：Obtain outer coil temperature；Determine the temperature variations of outer coil temperature；When the outer coil temperature is higher than outdoor dew-point temperature, and the rate temperature change of the outer coil temperature increases, control Unlatching processed slows down the operation of frosting device.
- 2. control method according to claim 1, it is characterised in that the temperature variations for determining outer coil temperature Including：Determine the current outer coil temperature in detection cycle acquired in current order and the first outer coil pipe acquired in previous order First temperature difference of temperature；Determine the described first outer coil temperature acquired in the previous order and the second external disk acquired in its previous order Second temperature difference of tube temperature degree；According to the comparative result of first temperature difference and second temperature difference, the temperature change of the outer coil temperature is determined The situation of speed.
- 3. control method according to claim 2, it is characterised in that described according to first temperature difference and described second The comparative result of temperature difference, determines the temperature variations of the outer coil temperature, including：When first temperature difference is more than second temperature difference, the rate temperature change increase；When first temperature difference is less than second temperature difference, the rate temperature change reduces.
- 4. control method according to claim 1, it is characterised in that further include：Slow down the 3rd outer coil temperature during the operation of frosting device described in acquisition；Determine the temperature variations of the 3rd outer coil temperature；When the 3rd outer coil temperature is higher than the outdoor dew-point temperature, and the temperature change speed of the 3rd outer coil temperature When rate increases, control is closed after slowing down frosting device operation setting duration.
- 5. control method according to claim 4, it is characterised in that further include：When the 3rd outer coil temperature is higher than the outdoor dew-point temperature, and the temperature change speed of the 3rd outer coil temperature When rate reduces, control slows down the closing of frosting device.
- A kind of 6. control device for slowing down air-conditioner outdoor unit frosting, it is characterised in that including：First acquisition unit, for obtaining outer coil temperature；First determination unit, for determining the temperature variations of outer coil temperature；First control unit, for being higher than outdoor dew-point temperature, and the temperature of the outer coil temperature when the outer coil temperature When rate of change increases, control unlatching slows down the operation of frosting device.
- 7. control method according to claim 6, it is characterised in that first determination unit includes：First determination subelement, for determining the current outer coil temperature in detection cycle acquired in current order and previous order First temperature difference of the first acquired outer coil temperature；Second determination subelement, for determining the described first outer coil temperature acquired in the previous order and its previous order Second temperature difference of the second acquired outer coil temperature；3rd determination subelement, for the comparative result according to first temperature difference and second temperature difference, determines described The situation of the rate temperature change of outer coil temperature.
- 8. control method according to claim 7, it is characterised in that the 3rd determination subelement is specifically used for：When first temperature difference is more than second temperature difference, the rate temperature change increase is determined；When first temperature difference is less than second temperature difference, determine that the rate temperature change reduces.
- 9. control method according to claim 6, it is characterised in that further include：Second acquisition unit, for obtaining the 3rd outer coil temperature slowed down when frosting device is run；Second determination unit, for determining the temperature variations of the 3rd outer coil temperature；Second control unit, for being higher than the outdoor dew-point temperature, and the 3rd external disk when the 3rd outer coil temperature During the rate temperature change increase of tube temperature degree, control is closed after slowing down frosting device operation setting duration.
- 10. control method according to claim 9, it is characterised in that second control unit is additionally operable to：When the 3rd outer coil temperature is higher than the outdoor dew-point temperature, and the temperature change speed of the 3rd outer coil temperature When rate reduces, control slows down the closing of frosting device.
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| CN110243050A (en) * | 2019-06-21 | 2019-09-17 | 宁波奥克斯电气股份有限公司 | A kind of control method, device and air conditioner postponing air conditioner frosting |
| CN110779164A (en) * | 2019-11-13 | 2020-02-11 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device, air conditioner and computer readable storage medium |
| CN110836456A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Control method for inhibiting frosting of air conditioner |
| CN112283880A (en) * | 2020-09-17 | 2021-01-29 | 珠海格力电器股份有限公司 | Control system and control method for preventing air conditioner from freezing |
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| CN110836456A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Control method for inhibiting frosting of air conditioner |
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