CN113739460B - Evaporator defrosting treatment method and device and heat pump equipment - Google Patents
Evaporator defrosting treatment method and device and heat pump equipment Download PDFInfo
- Publication number
- CN113739460B CN113739460B CN202110986600.XA CN202110986600A CN113739460B CN 113739460 B CN113739460 B CN 113739460B CN 202110986600 A CN202110986600 A CN 202110986600A CN 113739460 B CN113739460 B CN 113739460B
- Authority
- CN
- China
- Prior art keywords
- evaporator
- defrosting
- refrigerant flow
- heat exchange
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The application relates to an evaporator defrosting processing method, an evaporator defrosting processing device and heat pump equipment, and belongs to the technical field of evaporator defrosting, and the application comprises the following steps: acquiring the refrigerant flow of an evaporator; judging a satisfied defrosting judgment condition after determining that the evaporator enters a heat exchange promotion state by using the refrigerant flow, wherein the heat exchange promotion state is a state that frost is attached to the evaporator but the evaporation effect is enhanced; and performing defrosting treatment on the evaporator based on the judged defrosting judgment condition. Through this application, help making the defrosting opportunity control of evaporimeter more accurate.
Description
Technical Field
The application belongs to the technical field of evaporator defrosting, and particularly relates to an evaporator defrosting processing method and device and heat pump equipment.
Background
When the evaporator of the heat pump equipment is used for refrigerating, the evaporator exchanges heat with ambient air and absorbs heat from the ambient air, the evaporator is easy to frost, and along with the continuous accumulation of frost layers, the heat transfer thermal resistance between a refrigerant and the air in the evaporator is increased, so that the heat transfer of the evaporator is deteriorated, and the evaporation effect of the refrigerant in the evaporator is reduced.
In the related art, the defrosting control of the evaporator is often a rough control mode, such as periodic defrosting, defrosting judged by outdoor environment temperature, and the like, the frosting condition of the evaporator is not accurate enough, and the defrosting time control of the evaporator is not accurate enough.
Disclosure of Invention
Therefore, the method and the device for defrosting the evaporator and the heat pump equipment are provided, and the problem that the defrosting timing is not accurate enough due to the fact that the frosting condition of the evaporator is not accurate enough in evaporator defrosting control in the related technology is solved.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect, the present application provides a method of evaporator defrost treatment, the method comprising:
acquiring the refrigerant flow of an evaporator;
judging a satisfied defrosting judgment condition after determining that the evaporator enters a heat exchange promotion state by utilizing the refrigerant flow, wherein the heat exchange promotion state is a state that the evaporator is attached with frost but the evaporation effect is enhanced;
and performing defrosting treatment on the evaporator based on the judged defrosting judgment condition.
Further, the determining, by using the refrigerant flow, a defrosting determination condition that is satisfied after it is determined that the evaporator enters the heat exchange promotion state includes:
and after the evaporator is determined to enter the heat exchange promotion state, if the refrigerant flow rises to reach or exceed the vibration defrosting flow set value, judging that the vibration defrosting judgment condition is met.
Further, the defrosting the evaporator based on the judged defrosting judgment condition includes:
and if the judgment result shows that the vibration defrosting judgment condition is met, controlling to start the vibration generator to enable the evaporator to vibrate, so that a frost layer on the evaporator falls off until the refrigerant flow is detected to be lower than the vibration stop flow set value.
Further, the set value of the vibration defrosting flow rate is a floating upper limit value of the refrigerant flow rate in a non-frosted state of the evaporator.
Further, the method further comprises:
and if the interval time between two adjacent starting vibration generators is less than a preset time threshold, performing heating defrosting control on the evaporator.
Further, the determining, by using the refrigerant flow, that the evaporator enters the heat exchange promotion state and the satisfied defrosting determination condition includes:
and after the evaporator is determined to enter the heat exchange promoting state, if the refrigerant flow rises to reach or exceed the heating defrosting flow set value, judging that the heating defrosting judgment condition is met.
Further, the heating defrosting flow rate set value is greater than the floating upper limit value of the refrigerant flow rate in the state that the evaporator is not frosted.
Further, the defrosting the evaporator based on the judged defrosting judgment condition includes:
and if the heating defrosting judgment condition is met, performing heating defrosting control on the evaporator.
Further, the acquiring a refrigerant flow rate of the evaporator includes:
when the ambient temperature of the evaporator is reduced to a target temperature, the refrigerant flow of the evaporator is obtained, wherein the target temperature is a temperature greater than zero degree.
In a second aspect, the present application provides an evaporator defrosting processing apparatus, the apparatus comprising:
the acquisition module is used for acquiring the refrigerant flow of the evaporator;
the judging module is used for judging a satisfied defrosting judging condition after determining that the evaporator enters a heat exchange promoting state by utilizing the refrigerant flow, wherein the heat exchange promoting state is a state that frost is attached to the evaporator but the evaporation effect is enhanced;
and the defrosting processing module is used for carrying out defrosting processing on the evaporator based on the judged defrosting judgment condition.
In a third aspect, the present application provides a heat pump apparatus comprising:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of any of the above methods.
Further, the heat pump apparatus includes: a refrigerator or an air conditioner.
This application adopts above technical scheme, possesses following beneficial effect at least:
the method utilizes the refrigerant flow in the evaporator to carry out defrosting control judgment, the refrigerant flow change in the evaporator can represent the evaporation change condition of the refrigerant in the evaporator, at the initial stage of frost formation of the evaporator, latent heat is released when a frost layer is formed, the roughness and the heat transfer area of the heat transfer surface of the evaporator are increased, so that the evaporator enters a heat exchange promotion state, the evaporation effect of the evaporator is enhanced, the refrigerant flow is reduced, the frost layer is gradually thickened along with the increase of the frost formation degree, the heat transfer coefficient begins to be reduced due to the increase of the heat resistance, the evaporation effect of the refrigerant in the evaporator is inhibited from being gradually embodied, correspondingly, the refrigerant flow in the evaporator is gradually improved, based on the condition, after the evaporator is determined to enter the heat exchange promotion state, the refrigerant flow of the evaporator is utilized, the influence of the frost formation of the evaporator on the heat exchange effect can be more accurately obtained, and on the basis, the defrosting treatment is carried out on the evaporator, and the defrosting time is controlled more accurately.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart illustrating a method of evaporator defrost treatment according to an exemplary embodiment;
FIG. 2 is a schematic cross-sectional view of a tube wall at an early stage of evaporator frost formation, in accordance with an exemplary embodiment;
FIG. 3 is a schematic view of a cross-section of a tube wall showing a later stage of evaporator frost formation in accordance with an exemplary embodiment;
FIG. 4 is a block diagram schematic of an evaporator defrost treatment apparatus according to an exemplary embodiment;
fig. 5 is a block diagram schematic diagram illustrating a heat pump apparatus according to an exemplary embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a flow chart illustrating an evaporator defrosting process method according to an exemplary embodiment, which may be applied to a heat pump apparatus, which may include, but is not limited to, at least one of the following: a refrigerator, an air conditioner, etc., the evaporator defrosting processing method comprising the steps of:
and step S101, acquiring the refrigerant flow of the evaporator.
The evaporator generally has a plurality of refrigerant branches connected in parallel, and the refrigerant flow conditions in each refrigerant branch are substantially the same, so that the subsequent steps can be performed on any one refrigerant branch at the refrigerant flow rate.
The refrigerant flow monitoring device can select a certain position in the middle of the refrigerant branch as a refrigerant flow monitoring point, and in practical application, each refrigerant branch of the evaporator is obtained by one U-shaped pipe and two bent pipes which are respectively connected to two ends of the U-shaped pipe. In practical application, a certain position of the U pipe can be selected as a flow monitoring point to obtain the flow of the refrigerant.
The following judgment processing steps are triggered by acquiring the refrigerant flow of the evaporator, and for the acquisition opportunity of the refrigerant flow of the evaporator, the following embodiment is provided in the application, when the ambient temperature where the evaporator is located is reduced to the target temperature, the refrigerant flow of the evaporator is acquired, wherein the target temperature is the temperature greater than zero degree. In practical application, if the heat pump device is a refrigerator, the heat pump device can be applied to a refrigeration house, and the refrigeration temperature in the refrigeration house is the ambient temperature of the evaporator. If the heat pump equipment is an air conditioner, in winter, the indoor space of the air conditioner is heated, the heat exchanger of the outdoor unit is an evaporator, and the outdoor environment temperature is the environment temperature of the evaporator. In practical applications, the target temperature may be set to 5 ℃, when the ambient temperature of the evaporator is reduced to 5 ℃, the evaporation temperature of the evaporator is below 0 ℃, and if the air humidity is high enough, the evaporator will frost. It is noted that the above-mentioned setting of the target temperature of 5 ℃ is merely an exemplary illustration, and the target temperature includes, but is not limited to, 5 ℃.
And S102, judging a satisfied defrosting judgment condition after the evaporator enters a heat exchange promotion state by utilizing the refrigerant flow, wherein the heat exchange promotion state is a state that frost is attached to the evaporator but the evaporation effect is enhanced.
The refrigerant flow change in the evaporator can represent the refrigerant evaporation change condition in the evaporator, when the evaporator works, the refrigerant is evaporated and absorbs heat in the evaporator, the refrigerant is changed from a liquid phase to a gas phase, the refrigerant evaporation condition in the evaporator is stable in a frost-free state, and under the condition, the refrigerant flow is maintained within a certain fluctuation range (Q1 +/-Delta Q), wherein Q1 is a theoretical stable value of the refrigerant flow in the frost-free state, and Delta Q is a floating threshold value.
Referring to fig. 2 at the initial stage of evaporator frosting, fig. 2 is a schematic view of a cross section of a tube wall at the initial stage of evaporator frosting according to an exemplary embodiment, the evaporator refrigerant pipeline 1 has less frosting, the roughness of the heat transfer surface and the heat transfer area of the evaporator are increased, and the heat transfer capacity of the evaporator is enhanced, and simultaneously, because latent heat is released when the frost layer 2 is formed, the evaporation effect of the evaporator refrigerant is enhanced, the evaporation capacity of the refrigerant in the evaporator is greater than that in the previous normal frostless heat exchange state, the evaporator enters a heat exchange promotion state at the initial stage of frosting, the refrigerant evaporation and heat exchange are more sufficient under the heat exchange promotion state, the refrigerant flow is reduced, under the condition, the refrigerant flow is less than Q1- Δ Q, so that the refrigerant flow can be less than the floating lower limit value of the refrigerant flow under the frostless state of the evaporator, to determine that the evaporator enters the heat exchange promotion state.
Along with the increase of the frosting degree, the frosting layer is gradually thickened, the heat transfer coefficient begins to be reduced due to the increase of the heat resistance, the evaporation inhibition effect of the frosting layer is gradually reflected, correspondingly, the refrigerant flow in the evaporator is gradually increased, and when the refrigerant flow in the evaporator is increased to be larger than or equal to the floating lower limit value (Q1-delta Q) of the refrigerant flow in the non-frosting state, the heat exchange promotion state formed by the frosting of the evaporator is finished. When the refrigerant flow in the evaporator rises in a floating interval (Q1 +/-delta Q) of the refrigerant flow in the non-frosted state in the frosted state, the evaporation effect of the refrigerant of the evaporator shows the evaporation effect in the frostless normal heat exchange state, namely, the refrigerant is in the heat exchange maintaining state in the frosted state.
Under the frosting condition, the evaporator is in a heat exchange promotion state and a heat exchange maintaining state, and the heat exchange effect of the evaporator is not reduced.
When the frost layer continues to thicken, the effect of frost inhibition heat exchange is further increased, when the flow rate of the refrigerant in the evaporator is increased to be larger than the floating upper limit value (Q1+ delta Q) of the flow rate of the refrigerant in the non-frost state, the heat exchange capacity of the evaporator is indicated to be lower than the lower limit value of the normal condition, if the evaporator continues to frost, the heat exchange effect of the evaporator is increasingly poor until the corresponding heat exchange effect cannot be effectively generated. Referring to fig. 3, fig. 3 is a schematic cross-sectional view of a tube wall at a later frosting stage of an evaporator according to an exemplary embodiment, in which an evaporator refrigerant tube 1 is covered with a thick frost layer 2, and the heat exchange effect of the evaporator is seriously affected by the frost layer 2.
Based on the analysis of the frosting degree corresponding to the refrigerant flow after the evaporator enters the heat exchange promotion state, the application of defrosting judgment conditions including but not limited to the following conditions can be set, the influence of the frosting of the evaporator on the heat exchange effect can be obtained more accurately, and the defrosting opportunity can be controlled more accurately.
In an embodiment, the determining, by using the refrigerant flow rate, that the defrosting determination condition is satisfied after it is determined that the evaporator enters the heat exchange promotion state includes:
and after the evaporator is determined to enter the heat exchange promotion state, if the flow of the refrigerant rises to reach or exceed a vibration defrosting flow set value, judging that the vibration defrosting judgment condition is met.
Specifically, the vibration defrosting judgment condition is used for triggering defrosting of the evaporator in a vibration defrosting layer mode. In practical application, an oscillator can be arranged on the evaporator, and the evaporator is vibrated by opening the oscillator to drop the frost layer on the evaporator.
In practical application, the vibration defrosting flow set value can select a flow value in the middle of frosting, the frost layer is not thick in the middle of frosting, and the frost layer is easy to drop by vibration of the vibration generator.
In practical application, a value between [ Q1, Q1+ Δ Q ] can be selected as a vibration defrosting flow set value, after the heat exchange promotion state, in the interval, the heat exchange effect of the evaporator is in a holding state and is developed to be lower than a normal (non-frosting state) lower limit value, however, the adverse effect of the frost layer on the heat exchange of the evaporator does not cause the heat exchange capacity of the heat exchanger to be lower than the normal state, which indicates that the frost layer is thin and is easy to drop through a vibration mode. The value of this interval is regarded as the vibration defrosting flow setting value, after getting into the heat transfer and promoting the state, before evaporimeter refrigerant flow reachd this value, the heat transfer effect of evaporimeter does not embody and is less than the normality, can not necessarily defrost, and when evaporimeter refrigerant flow reachd this value, judge and satisfy vibration defrosting judgement condition, trigger the vibration defrosting, let the frost layer drop on the evaporimeter, like this, according to the frost layer condition of dropping, the evaporimeter will get into heat transfer and promote state or heat transfer hold the state, can prolong the promotion or the effect of keeping of frosting to the evaporation heat transfer.
In one embodiment, the oscillating defrost flow rate setting is a floating upper limit (Q1+ Δ Q) of the refrigerant flow rate when the evaporator is not frosted. The floating upper limit value of the refrigerant flow under the state that the evaporator is not frosted is used as a vibration defrosting flow set value, and the vibration defrosting is triggered under the condition that the heat exchange effect of the evaporator shows reduction, so that the promotion or the maintenance effect of frosting on evaporation heat exchange can be prolonged to the maximum extent.
In an embodiment, the determining, by using the refrigerant flow rate, that the defrosting determination condition is satisfied after it is determined that the evaporator enters the heat exchange promotion state includes:
and after the evaporator is determined to enter the heat exchange promoting state, if the refrigerant flow rises to reach or exceed the heating defrosting flow set value, judging that the heating defrosting judgment condition is met.
Specifically, the heating defrosting judgment condition is used for triggering defrosting in a manner of heating the evaporator, and defrosting is thorough in a heating manner.
In one embodiment, the heating defrost flow rate setting value is greater than a floating upper limit of the refrigerant flow rate in a non-frosted state of the evaporator.
When the refrigerant flow is larger than the floating upper limit value (Q1+ delta Q) of the refrigerant flow under the condition that the evaporator is not frosted, the heat exchange effect of the evaporator is lower than the normal lower limit value, the frosting of the evaporator has an adverse effect on the working capacity of the heat pump equipment, and when the adverse effect of the frosting on the heat exchange of the evaporator reaches a set degree, the corresponding refrigerant flow value is used as a heating defrosting flow set value and is used as a heating defrosting time to trigger the heating defrosting of the evaporator.
And step S103, defrosting the evaporator based on the judged defrosting judgment condition.
The defrosting judgment condition is a defrosting judgment condition based on the refrigerant flow after the evaporator is determined to enter the heat exchange promotion state, and the influence of the evaporator frosting on the heat exchange effect can be obtained more accurately through the defrosting judgment condition, so that the defrosting opportunity can be controlled more accurately. On the basis, the defrosting treatment is triggered to be carried out on the evaporator, so that the defrosting control can be more accurate.
In one embodiment, the defrosting the evaporator based on the determined defrosting determination condition includes:
and if the judgment result shows that the vibration defrosting judgment condition is met, controlling to start the vibration generator to enable the evaporator to vibrate, so that a frost layer on the evaporator falls off until the refrigerant flow is detected to be lower than the vibration stop flow set value.
In the practical application of the scheme, the evaporator can be provided with the vibration generator, and the evaporator is vibrated by opening the vibration generator, so that the frost layer on the evaporator falls off. Through this scheme, let the frost layer drop, can make the evaporimeter reenter heat transfer promotion state or heat transfer holding state under the frosting condition to the promotion of extension frosting to the evaporation or the holding effect, and then the normal operating condition of extension heat pump equipment.
In practical application, the vibration-stopped flow setting value can select a flow value under the effect of maintaining heat exchange of frost on the evaporator, and can select a flow value between [ Q1- Δ Q, Q1] as the vibration-stopped flow setting value, when the frost layer vibrates and falls, the refrigerant flow may be in a smaller Q1- Δ Q interval, so as to enhance the heat exchange effect of the evaporator again, and the refrigerant flow may be in an interval which is greater than or equal to Q1- Δ Q and smaller than the vibration-stopped flow setting value, so as to maintain the heat exchange effect of the evaporator. Meanwhile, a sufficient margin flow interval is formed to delay the re-satisfaction of the vibration defrosting judgment condition.
Further, the method further comprises:
and if the interval time between two adjacent starting vibration generators is less than a preset time threshold, performing heating defrosting control on the evaporator.
Specifically, the starting interval time of the vibration generator is smaller than the preset time threshold, which indicates that the frost layer is accumulated too fast under the current weather condition, the time for promoting and maintaining the effect of heat exchange of the evaporator by frosting is short, and the method is not suitable for frequently starting the vibration generator to vibrate the frost layer to drop to defrost, and the evaporator needs to be heated and defrosted.
In one embodiment, the defrosting the evaporator based on the determined defrosting determination condition includes:
and if the heating defrosting judgment condition is met, performing heating defrosting control on the evaporator.
Specifically, after the refrigerant flow is judged to rise to or exceed the heating defrosting flow set value, the heating defrosting control of the evaporator is triggered, the heating defrosting control can be the four-way valve reversing heating defrosting control, the evaporator can also be provided with an electric heating device, and the evaporator is heated and defrosted by the heat heated by the electric heating device.
In practical application, the heating defrosting flow set value can be set to be larger than the vibration defrosting flow set value, so as to judge whether the vibration defrosting judgment condition is met or not firstly and trigger vibration defrosting.
According to the scheme of the related embodiment, the defrosting control and judgment are carried out by utilizing the flow of the refrigerant in the evaporator, the promotion and maintenance effects of frosting on the heat exchange of the evaporator can be fully utilized, and the energy-saving effect of the equipment can be improved by defrosting after the defrosting is carried out.
Referring to fig. 4, fig. 4 is a block diagram of an evaporator defrosting processing unit according to an exemplary embodiment, the evaporator defrosting processing unit 4 includes:
an obtaining module 401, configured to obtain a refrigerant flow rate of an evaporator;
a determining module 402, configured to determine, by using the refrigerant flow, a satisfied defrosting determination condition after determining that the evaporator enters a heat exchange promotion state, where the heat exchange promotion state is a state where frost is attached to the evaporator but an evaporation effect is enhanced;
and a defrosting processing module 403, configured to perform defrosting processing on the evaporator based on the determined defrosting determination condition.
Further, the determining module 402 is specifically configured to:
and after the evaporator is determined to enter the heat exchange promotion state, if the refrigerant flow rises to reach or exceed the vibration defrosting flow set value, judging that the vibration defrosting judgment condition is met.
Further, the defrosting processing module 403 is specifically configured to: and if the judgment result shows that the vibration defrosting judgment condition is met, controlling to start the vibration generator to enable the evaporator to vibrate, so that a frost layer on the evaporator falls off until the refrigerant flow is detected to be lower than the vibration stop flow set value.
Further, the set value of the vibration defrosting flow rate is a floating upper limit value of the refrigerant flow rate in a non-frosted state of the evaporator.
Further, the defrosting processing module 403 is further specifically configured to:
and if the interval time between two adjacent starting vibration generators is less than a preset time threshold, performing heating defrosting control on the evaporator.
Further, the determining module 402 is specifically configured to:
and after the evaporator is determined to enter the heat exchange promoting state, if the refrigerant flow rises to reach or exceed the heating defrosting flow set value, judging that the heating defrosting judgment condition is met.
Further, the heating defrosting flow rate set value is greater than the floating upper limit value of the refrigerant flow rate in the state that the evaporator is not frosted.
Further, the defrosting processing module 403 is specifically configured to: and if the heating defrosting judgment condition is met, performing heating defrosting control on the evaporator.
Further, the obtaining module 401 is specifically configured to:
when the ambient temperature of the evaporator is reduced to a target temperature, the refrigerant flow of the evaporator is obtained, wherein the target temperature is a temperature greater than zero degrees.
With regard to the evaporator defrosting processing means 4 in the above embodiment, the specific manner in which the respective modules perform the operations has been described in detail in the above embodiment of the related method, and will not be explained in detail here.
Referring to fig. 5, fig. 5 is a block diagram schematically illustrating a heat pump apparatus according to an exemplary embodiment, the heat pump apparatus 5 including:
one or more memories 501 having executable programs stored thereon;
one or more processors 502 for executing the executable programs in the memory 501 to implement the steps of any of the methods described above.
Further, the heat pump apparatus 5 includes, but is not limited to: a refrigerator or an air conditioner.
In the specific application, the heat pump equipment 5 is provided with the oscillator on the evaporator, the evaporator is made to vibrate by opening the oscillator, a frost layer on the evaporator drops, vibration defrosting is realized, the heat pump equipment also has the heating defrosting function, the four-way valve can be used for reversing to realize heating defrosting, the evaporator can also be provided with the electric heating device, and the evaporator is heated and defrosted by using the heat heated by the electric heating device.
With regard to the heat pump apparatus 5 of the above-described embodiment, the specific manner in which the processor 502 executes the program stored in the memory 501 has been described in detail in the embodiment related to the method, and will not be described in detail here.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, the meaning of "plurality" means at least two unless otherwise specified.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and further, as used herein, connected may include wirelessly connected; the term "and/or" is used to include any and all combinations of one or more of the associated listed items.
Any process or method descriptions in flow charts or otherwise described herein may be understood as: represents modules, segments or portions of code which include one or more executable instructions for implementing specific logical functions or steps of a process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (11)
1. An evaporator defrosting process method, comprising:
acquiring the refrigerant flow of an evaporator;
judging a satisfied defrosting judgment condition after determining that the evaporator enters a heat exchange promotion state by using the refrigerant flow, wherein the heat exchange promotion state is a state that frost is attached to the evaporator but the evaporation effect is enhanced;
performing defrosting processing on the evaporator based on the judged defrosting judgment condition;
wherein, after determining that the evaporator enters the heat exchange promotion state by using the refrigerant flow, the judging the satisfied defrosting judgment condition comprises:
and after the evaporator is determined to enter the heat exchange promotion state, if the refrigerant flow rises to reach or exceed the vibration defrosting flow set value, judging that the vibration defrosting judgment condition is met.
2. The method according to claim 1, wherein the defrosting an evaporator based on the judged defrosting judgment condition includes:
and if the judgment result shows that the vibration defrosting judgment condition is met, controlling to start the vibration generator to enable the evaporator to vibrate, so that a frost layer on the evaporator falls off until the refrigerant flow is detected to be lower than the vibration stop flow set value.
3. The method of claim 1, wherein the vibration defrost flow rate set point is a floating upper limit of refrigerant flow rate in an evaporator non-frosted state.
4. The method according to any one of claims 1-3, further comprising:
and if the interval time between two adjacent starting vibration generators is less than a preset time threshold, performing heating defrosting control on the evaporator.
5. The method according to any one of claims 1 to 3, wherein the determining, by using the refrigerant flow rate, whether the defrosting determination condition is satisfied after determining that the evaporator enters the heat exchange promotion state includes:
and after the evaporator is determined to enter the heat exchange promoting state, if the refrigerant flow rises to reach or exceed the heating defrosting flow set value, judging that the heating defrosting judgment condition is met.
6. The method as claimed in claim 5, wherein the heating defrost flow rate setting value is greater than a floating upper limit of a refrigerant flow rate in an unfrozen state of the evaporator.
7. The method according to claim 5, wherein the defrosting the evaporator based on the judged defrosting judgment condition includes:
and if the heating defrosting judgment condition is met, performing heating defrosting control on the evaporator.
8. The method as claimed in claim 1, wherein said obtaining a refrigerant flow rate of the evaporator comprises:
when the ambient temperature of the evaporator is reduced to a target temperature, the refrigerant flow of the evaporator is obtained, wherein the target temperature is a temperature greater than zero degree.
9. An evaporator defrosting process apparatus, characterized in that the apparatus comprises:
the acquisition module is used for acquiring the refrigerant flow of the evaporator;
the judging module is used for judging a satisfied defrosting judging condition after determining that the evaporator enters a heat exchange promoting state by utilizing the refrigerant flow, wherein the heat exchange promoting state is a state that frost is attached to the evaporator but the evaporation effect is enhanced;
the defrosting processing module is used for carrying out defrosting processing on the evaporator based on the judged defrosting judgment condition;
the judging module is specifically configured to: and after the evaporator is determined to enter the heat exchange promotion state, if the refrigerant flow rises to reach or exceed the vibration defrosting flow set value, judging that the vibration defrosting judgment condition is met.
10. A heat pump apparatus, comprising:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of the method of any one of claims 1-8.
11. The heat pump apparatus according to claim 10, wherein the heat pump apparatus comprises: a refrigerator or an air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110986600.XA CN113739460B (en) | 2021-08-26 | 2021-08-26 | Evaporator defrosting treatment method and device and heat pump equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110986600.XA CN113739460B (en) | 2021-08-26 | 2021-08-26 | Evaporator defrosting treatment method and device and heat pump equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113739460A CN113739460A (en) | 2021-12-03 |
| CN113739460B true CN113739460B (en) | 2022-06-07 |
Family
ID=78733169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110986600.XA Active CN113739460B (en) | 2021-08-26 | 2021-08-26 | Evaporator defrosting treatment method and device and heat pump equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113739460B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279110B (en) * | 2022-03-01 | 2022-05-20 | 浙江乾丰智能科技有限公司 | Intelligent defrosting device and method for air energy water heater |
| CN115289742B (en) * | 2022-07-13 | 2023-11-14 | 珠海格力电器股份有限公司 | Evaporator defrosting control method, evaporator defrosting control device and refrigeration equipment |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02219967A (en) * | 1989-02-20 | 1990-09-03 | Sanyo Electric Co Ltd | Method for controlling defrosting in refrigerating plant |
| JPH0320552A (en) * | 1989-06-19 | 1991-01-29 | Sanyo Electric Co Ltd | Deforosting control method for refrigerator |
| JPH0331638A (en) * | 1989-06-28 | 1991-02-12 | Daikin Ind Ltd | Operation controller for air conditioning apparatus |
| CN1246609A (en) * | 1998-08-31 | 2000-03-08 | 大宇电子株式会社 | Refrigerator defrost control method |
| JP2010060150A (en) * | 2008-09-01 | 2010-03-18 | Mitsubishi Electric Corp | Heat pump device |
| JP2011127853A (en) * | 2009-12-18 | 2011-06-30 | Mitsubishi Electric Corp | Heat pump device |
| WO2014137060A1 (en) * | 2013-03-04 | 2014-09-12 | 주식회사 두텍 | Apparatus for detecting time to defrost evaporation heat exchanger based on bypass airflow measurement and method for controlling operations of same |
| CN109506401A (en) * | 2018-11-09 | 2019-03-22 | 珠海格力电器股份有限公司 | A kind of defrosting control method, system and the storage medium of multi-connected machine heat pump |
| CN110513949A (en) * | 2019-08-28 | 2019-11-29 | 长虹美菱股份有限公司 | A kind of defrosting control method and device |
| CN110701838A (en) * | 2019-10-30 | 2020-01-17 | 宁波奥克斯电气股份有限公司 | Method for judging defrosting of heat pump and heat pump defrosting system |
| CN110986466A (en) * | 2019-12-16 | 2020-04-10 | 长虹美菱股份有限公司 | Self-adaptive defrosting control method |
| CN111089393A (en) * | 2019-12-12 | 2020-05-01 | 珠海格力电器股份有限公司 | Intelligent defrosting method and device for air cooler and controller |
| CN113203182A (en) * | 2021-04-26 | 2021-08-03 | 广东美的暖通设备有限公司 | Defrosting control method and device for air conditioner, air conditioner and storage medium |
-
2021
- 2021-08-26 CN CN202110986600.XA patent/CN113739460B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02219967A (en) * | 1989-02-20 | 1990-09-03 | Sanyo Electric Co Ltd | Method for controlling defrosting in refrigerating plant |
| JPH0320552A (en) * | 1989-06-19 | 1991-01-29 | Sanyo Electric Co Ltd | Deforosting control method for refrigerator |
| JPH0331638A (en) * | 1989-06-28 | 1991-02-12 | Daikin Ind Ltd | Operation controller for air conditioning apparatus |
| CN1246609A (en) * | 1998-08-31 | 2000-03-08 | 大宇电子株式会社 | Refrigerator defrost control method |
| JP2010060150A (en) * | 2008-09-01 | 2010-03-18 | Mitsubishi Electric Corp | Heat pump device |
| JP2011127853A (en) * | 2009-12-18 | 2011-06-30 | Mitsubishi Electric Corp | Heat pump device |
| WO2014137060A1 (en) * | 2013-03-04 | 2014-09-12 | 주식회사 두텍 | Apparatus for detecting time to defrost evaporation heat exchanger based on bypass airflow measurement and method for controlling operations of same |
| CN109506401A (en) * | 2018-11-09 | 2019-03-22 | 珠海格力电器股份有限公司 | A kind of defrosting control method, system and the storage medium of multi-connected machine heat pump |
| CN110513949A (en) * | 2019-08-28 | 2019-11-29 | 长虹美菱股份有限公司 | A kind of defrosting control method and device |
| CN110701838A (en) * | 2019-10-30 | 2020-01-17 | 宁波奥克斯电气股份有限公司 | Method for judging defrosting of heat pump and heat pump defrosting system |
| CN111089393A (en) * | 2019-12-12 | 2020-05-01 | 珠海格力电器股份有限公司 | Intelligent defrosting method and device for air cooler and controller |
| CN110986466A (en) * | 2019-12-16 | 2020-04-10 | 长虹美菱股份有限公司 | Self-adaptive defrosting control method |
| CN113203182A (en) * | 2021-04-26 | 2021-08-03 | 广东美的暖通设备有限公司 | Defrosting control method and device for air conditioner, air conditioner and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113739460A (en) | 2021-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108613473B (en) | Wind cooling refrigerator and its control method of defrost, control system, controller | |
| CN113739460B (en) | Evaporator defrosting treatment method and device and heat pump equipment | |
| CN110762754B (en) | Intelligent defrosting method and system for air conditioner and air conditioner | |
| CN107906808B (en) | Method and device for controlling defrosting of air conditioner | |
| CN110608511A (en) | Air conditioner heating control method, controller and air conditioner | |
| CN109737560B (en) | Air conditioner defrosting control method and device and air conditioner | |
| CN111365825A (en) | Air conditioner defrosting control method and device and air conditioner | |
| CN111811198A (en) | Defrosting control method and device and electric equipment | |
| CN109253524B (en) | Control method of heat pump system, heat pump system and air conditioner | |
| CN112032941A (en) | Control method of air conditioner | |
| CN113266932A (en) | Method and device for controlling defrosting of air conditioner, storage medium and air conditioner | |
| CN111089393A (en) | Intelligent defrosting method and device for air cooler and controller | |
| CN112484379A (en) | Defrosting control method and device of refrigerator, controller and refrigerator | |
| WO2021002087A1 (en) | Air conditioner | |
| CN110332653B (en) | Outdoor unit defrosting control method, device and equipment | |
| CN115711511A (en) | Thermal fluorination defrosting control method and device and refrigeration equipment | |
| CN115095956B (en) | Air conditioner and defrosting control method thereof | |
| CN112539515A (en) | Method and device for defrosting of air conditioner and air conditioner | |
| CN109612028A (en) | A kind of method that air-conditioner outdoor unit judges the on-line monitoring to defrost and control system | |
| WO2022054278A1 (en) | Inference device and learning device | |
| JP3497255B2 (en) | Refrigeration equipment | |
| CN114135946A (en) | Defrosting system and method of air conditioner and air conditioner | |
| CN114279120A (en) | Oil return control method and device and air conditioning system | |
| JP2550649B2 (en) | Refrigeration equipment | |
| CN105066354A (en) | Control method and device for air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |