CN112254292A - Method and device for dual-evaporator air conditioning system control, and air conditioner - Google Patents

Abstract

The present application relates to the technical field of air-conditioning control, and discloses a method for controlling a dual-evaporator air-conditioning system. The method includes: acquiring an air-conditioning system operating mode, a first evaporator coil temperature T1 and a second evaporator coil temperature T2; when the difference ΔT between the temperature T1 of the first evaporator coil and the temperature T2 of the second evaporator coil is greater than the set temperature value, adjust the first temperature according to the operating mode of the air conditioning system and the difference ΔT. A regulating valve opening Y1, and/or, regulating a second regulating valve opening Y2. The embodiment of the present disclosure realizes that the operating state of the air conditioning system is adjusted according to the real-time shunt situation of the evaporator, which can effectively improve the uniformity of the air outlet temperature of the air conditioning system in a timely manner, and improve the user experience. The application also discloses a control and air conditioner for a dual-evaporator air conditioning system.

Description

Method and device for dual-evaporator air conditioning system control, and air conditioner

technical field

The present application relates to the technical field of air-conditioning control, for example, to a method and device for controlling a dual-evaporator air-conditioning system, and an air conditioner.

Background technique

At present, with the continuous improvement of people's living standards, consumers' requirements for air conditioners have gradually increased, and the dual evaporative air conditioning system has emerged as the times require. The branches where the two evaporators are located are arranged in parallel, and the outlets of the two evaporators are connected with the inlet of the compressor. The prior art provides a variety of control schemes for the dual-evaporator air conditioning system, usually through a simple "T"-shaped three-way to divide the flow, or two expansion valves with electromagnetic switches are selected, and the electromagnetic expansion valve is controlled according to the set time period. on or off for shunting.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

When the shunt deviation occurs, it cannot be actively adjusted, resulting in a large temperature difference between the air-conditioning outlet air.

SUMMARY OF THE INVENTION

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended to be an extensive review, nor to identify key/critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

Embodiments of the present disclosure provide a method and device for controlling a dual-evaporator air conditioning system, and an air conditioner, to solve the technical problem of inability to actively adjust when a diversion deviation occurs, resulting in a large temperature difference between the left and right outlet air of the air conditioner.

In some embodiments, the method includes:

Obtain the operating mode of the air conditioning system, the temperature T1 of the first evaporator coil and the temperature T2 of the second evaporator coil;

When the difference ΔT between the first evaporator coil temperature T1 and the second evaporator coil temperature T2 is greater than the set temperature value, the first adjustment is adjusted according to the air conditioning system operating mode and the difference ΔT The valve opening Y1, and/or, adjust the second regulating valve opening Y2.

In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to, when executing the program instructions, perform the above-described method for dual-evaporator air conditioning system control.

In some embodiments, the air conditioner includes: two evaporators and means for dual evaporator air conditioning system control as described above.

The method and device for controlling a dual-evaporator air conditioning system, and the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

The device used for dual-evaporator air conditioning system control adjusts the opening of two regulating valves based on the operating mode of the air conditioning system, the temperature of the first evaporator coil and the temperature of the second evaporator coil, and realizes the real-time adjustment of the diversion according to the evaporator. The operating status of the air-conditioning system can effectively improve the uniformity of the air temperature of the air-conditioning system in a timely and effective manner, and improve the user experience.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the accompanying drawings, which are not intended to limit the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings do not constitute a limitation of scale, and in which:

1 is a schematic diagram of a method for controlling a dual-evaporator air conditioning system provided by an embodiment of the present disclosure;

2 is a schematic diagram of another method for controlling a dual-evaporator air conditioning system provided by an embodiment of the present disclosure;

3 is a schematic diagram of another method for controlling a dual-evaporator air conditioning system provided by an embodiment of the present disclosure;

4 is a schematic structural diagram of a dual evaporator provided by an embodiment of the present disclosure;

5 is a schematic structural diagram of an air outlet provided by an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of an apparatus for controlling a dual-evaporator air conditioning system provided by an embodiment of the present disclosure.

Detailed ways

In order to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, numerous details are provided to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for the purposes of implementing the embodiments of the disclosure described herein. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion.

Unless stated otherwise, the term "plurality" means two or more.

In this embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an "or" relationship. For example, A/B means: A or B.

The term "and/or" is an associative relationship describing objects, indicating that three relationships can exist. For example, A and/or B, means: A or B, or, A and B three relationships.

The method and device provided by the embodiments of the present disclosure are used to control a dual-evaporator air conditioning system. 4 is a schematic structural diagram of a dual evaporator provided by an embodiment of the present disclosure, including: a first evaporator 1, a second evaporator 2, a first evaporator coil 3, a second evaporator coil 4, a first regulator Valve 5, second regulating valve 6 and "T" type three-way 7. FIG. 5 is a schematic structural diagram of an air outlet provided by an embodiment of the present disclosure, including: a first air outlet 8 and a second air outlet 9 . The first evaporator 1 and the second evaporator 2 shown in FIG. 4 are respectively installed in the structure where the first air outlet 8 and the second air outlet 9 shown in FIG. 5 are located.

1 is a schematic diagram of a method for controlling a dual-evaporator air conditioning system provided by an embodiment of the present disclosure, including the following steps:

S101 , acquiring the operation mode of the air conditioning system, the temperature T1 of the first evaporator coil and the temperature T2 of the second evaporator coil.

S102, when the difference ΔT between the temperature T1 of the first evaporator coil and the temperature T2 of the second evaporator coil is greater than the set temperature value, adjust the opening of the first regulating valve according to the operating mode of the air conditioning system and the difference ΔT degree Y1, and/or, adjust the opening degree Y2 of the second regulating valve. Optionally, the set temperature value is 1°C to 2°C. Optionally, the set temperature value is 1°C, 1.2°C, 1.4°C, 1.5°C, 1.6°C, 1.8°C or 2°C.

In different embodiments, there are various control schemes for the first regulating valve opening degree Y1 and the second regulating valve opening degree Y2. In some embodiments, only the first regulating valve opening Y1 is adjusted. In some embodiments, only the second regulating valve opening Y2 is adjusted. In some embodiments, adjusting the opening degree Y1 of the first regulating valve and the opening degree Y2 of the second regulating valve at the same time can speed up the regulation of the air conditioning system to a stable state.

Among them, when the difference ΔT is greater than the set temperature value, there is a risk of a large temperature difference at the air outlet. Adjusting the opening degree Y1 of the first regulating valve and the opening degree Y2 of the second regulating valve based on the difference ΔT can ensure that both The split flow between evaporators is balanced, so that the air temperature at the air outlet is the same, improving the comfort of the air outlet and improving the user experience.

In the embodiment of the present disclosure, the device for controlling the dual-evaporator air conditioning system adjusts the opening of the two regulating valves based on the air conditioning system operating mode, the temperature of the first evaporator coil and the temperature of the second evaporator coil, so as to realize the The real-time diversion of the evaporator adjusts the operating state of the air conditioning system, which can effectively improve the uniformity of the air temperature at the outlet of the air conditioning system in a timely and effective manner, and improve the user experience.

2 is a schematic diagram of a method for controlling a dual-evaporator air conditioning system provided by an embodiment of the present disclosure, including the following steps:

S201 , acquiring the operation mode of the air conditioning system, the temperature T1 of the first evaporator coil and the temperature T2 of the second evaporator coil.

S202, it is determined whether the difference ΔT between the temperature T1 of the first evaporator coil and the temperature T2 of the second evaporator coil is greater than the set temperature value Ts.

S203, when the difference ΔT is greater than the set temperature value Ts, and the operation mode of the air-conditioning system is the cooling mode, step S205 or step S206 is executed.

S204, when the difference value ΔT is greater than the set temperature value Ts, and the operation mode of the air-conditioning system is the heating mode, step S207 or step S208 is executed.

S205 , when the operating mode of the air conditioning system is the cooling mode and the temperature T1 of the first evaporator coil is greater than the temperature T2 of the second evaporator coil, control the opening degree Y2 of the second regulating valve to decrease.

S206, when the operating mode of the air conditioning system is the cooling mode and the temperature T1 of the first evaporator coil is lower than the temperature T2 of the second evaporator coil, control the opening degree Y1 of the first regulating valve to decrease.

S207 , when the operating mode of the air conditioning system is the heating mode and the temperature T1 of the first evaporator coil is greater than the temperature T2 of the second evaporator coil, control the opening degree Y1 of the first regulating valve to decrease.

S208 , when the operating mode of the air conditioning system is the heating mode and the temperature T1 of the first evaporator coil is lower than the temperature T2 of the second evaporator coil, control the opening degree Y2 of the second regulating valve to decrease.

S209, when the difference ΔT is less than or equal to the set temperature value Ts, keep the state of the first regulating valve opening degree Y1 and the second regulating valve opening degree Y2 unchanged.

In the embodiment of the present disclosure, the device for controlling the dual-evaporator air conditioning system adjusts the opening of the two regulating valves based on the air conditioning system operating mode, the temperature of the first evaporator coil and the temperature of the second evaporator coil, so as to realize the The real-time diversion of the evaporator adjusts the operating state of the air conditioning system, which can effectively improve the uniformity of the air temperature at the outlet of the air conditioning system in a timely and effective manner, and improve the user experience.

3 is a schematic diagram of another method for controlling a dual-evaporator air conditioning system provided by an embodiment of the present disclosure, including the following steps:

S301 , acquiring the operation mode of the air conditioning system, the temperature T1 of the first evaporator coil and the temperature T2 of the second evaporator coil.

S302, determine whether the difference ΔT between the temperature T1 of the first evaporator coil and the temperature T2 of the second evaporator coil is greater than the set temperature value Ts.

S303 , when the difference ΔT is greater than the set temperature value Ts and the operation mode of the air-conditioning system is the cooling mode, step S305 , step S306 , step S307 or step S308 are executed.

S304 , when the difference ΔT is greater than the set temperature value Ts, and the operation mode of the air conditioning system is the heating mode, step S308 , step S309 , step S310 or step S311 are executed.

S305, when the operating mode of the air-conditioning system is the cooling mode, and the difference ΔT is less than or equal to the first set difference, if the temperature T1 of the first evaporator coil is greater than the temperature T2 of the second evaporator coil, control the first evaporator coil temperature T2. The second regulating valve opening Y2 decreases.

S306, when the operating mode of the air-conditioning system is the cooling mode and the difference ΔT is less than or equal to the first set difference, if the temperature T1 of the first evaporator coil is less than the temperature T2 of the second evaporator coil, control the first evaporator coil temperature T2. A regulating valve opening Y1 decreases.

S307, when the operating mode of the air-conditioning system is the cooling mode and the difference ΔT is greater than the first set difference, if the temperature T1 of the first evaporator coil is greater than the temperature T2 of the second evaporator coil, control the first adjustment The valve opening degree Y2 is increased, and the second regulating valve opening degree Y1 is controlled to decrease.

S308, when the operating mode of the air-conditioning system is the cooling mode and the difference ΔT is greater than the first set difference, if the temperature T1 of the first evaporator coil is lower than the temperature T2 of the second evaporator coil, control the first adjustment The valve opening degree Y1 is decreased, and the second regulating valve opening degree Y2 is controlled to increase.

S309, when the operating mode of the air-conditioning system is the heating mode and the difference ΔT is less than or equal to the second set difference, if the temperature T1 of the first evaporator coil is greater than the temperature T2 of the second evaporator coil, control the The opening degree Y1 of the first regulating valve decreases.

S310, when the operating mode of the air-conditioning system is the heating mode and the difference ΔT is less than or equal to the second set difference, if the temperature T1 of the first evaporator coil is less than the temperature T2 of the second evaporator coil, control the The opening degree Y2 of the second regulating valve decreases.

S311, when the operating mode of the air-conditioning system is the heating mode and the difference ΔT is greater than the second set difference, if the temperature T1 of the first evaporator coil is greater than the temperature T2 of the second evaporator coil, control the first The opening degree Y1 of the regulating valve is decreased, and the opening degree Y2 of the second regulating valve is controlled to increase.

S312, when the operating mode of the air-conditioning system is the heating mode and the difference ΔT is greater than the second set difference, if the temperature T1 of the first evaporator coil is less than the temperature T2 of the second evaporator coil, control the first The opening degree Y1 of the regulating valve is increased, and the opening degree Y2 of the second regulating valve is controlled to decrease.

S313, when the difference ΔT is less than or equal to the set temperature value Ts, keep the state of the first regulating valve opening degree Y1 and the second regulating valve opening degree Y2 unchanged.

Wherein, in steps S307 and S308, when the difference ΔT is greater than the first set difference, simultaneously adjusting the opening degree Y1 of the first regulating valve and the opening degree Y2 of the second regulating valve can speed up the first evaporator coil. The temperature T1 and the temperature T2 of the second evaporator coil reach a balance to avoid the temperature difference at the air outlet of the air conditioner being too large. Similarly, in steps S311 and S312, when the difference ΔT is greater than the second set difference, simultaneously adjusting the opening degree of the first regulating valve Y1 and the opening degree of the second regulating valve Y2 can speed up the first evaporator pan. The tube temperature T1 and the second evaporator coil temperature T2 reach a balance to avoid excessive temperature difference at the air outlet of the air conditioner.

In some embodiments, the first set difference is the same as the second set difference. Optionally, the first set difference is 3°C to 5°C. Optionally, set the difference to 3°C, 4°C or 5°C.

In the embodiment of the present disclosure, the device for controlling the dual-evaporator air conditioning system adjusts the opening of the two regulating valves based on the air conditioning system operating mode, the temperature of the first evaporator coil and the temperature of the second evaporator coil, so as to realize the The real-time diversion of the evaporator adjusts the operating state of the air conditioning system, which can effectively improve the uniformity of the air temperature at the outlet of the air conditioning system in a timely and effective manner, and improve the user experience.

In some embodiments, before adjusting the opening degree Y1 of the first regulating valve and/or adjusting the opening degree Y2 of the second regulating valve, the method further includes: determining the adjustment amount of the valve opening degree according to the difference ΔT; and the current regulating valve opening to determine the target regulating valve opening.

In some embodiments, the relationship between the difference ΔT and the adjustment amount is as follows:

△Y=k*△T*f

Among them, △Y is the adjustment amount; k is the adjustment coefficient; f is the maximum opening of the control valve. Optionally, the adjustment coefficient is 0.01 to 0.05. Optionally, the adjustment factor is 0.01, 0.02, 0.03, 0.04 or 0.05.

In some embodiments, the method for controlling a dual-evaporator air conditioning system further includes: adjusting the first regulating valve opening Y1 and the first regulating valve opening degree Y1 and the first regulating valve opening degree Y1 when the change value of the compressor operating frequency per unit time is greater than the set frequency. 2. Adjust the valve opening Y2 to the set opening. Optionally, the opening degree is set to be 0.5f˜0.8f. Optionally, set the opening to 0.5f, 0.6f, 0.7f or 0.8f. Among them, f is the maximum opening of the regulating valve. In the embodiment of the present disclosure, when the frequency change of the compressor exceeds the set frequency, the original balance of the air conditioning system changes, and the flow distribution of the left and right evaporators changes. The heat and flow imbalance caused by the different openings of the left and right regulating valves, that is, at a certain frequency, the corresponding opening degrees of the two regulating valves when the flow of the left and right evaporators are balanced cannot be applied to the entire frequency range of the compressor.

Optionally, the set frequency is 10 Hz to 20 Hz. Optionally, the set frequency is 10Hz, 12Hz, 14Hz, 16Hz, 18Hz or 20Hz. Among them, the set frequency is less than or equal to the change amount of the compressor when adjusting the adjacent wind speed. The set frequency should not be too large. When the frequency changes, such as the rapid change of the frequency due to the change of the windshield or the occurrence of protection, it is not conducive to the rapid restoration of the stable and balanced state of the system. The set frequency should not be too small. If the set frequency is too small, a slight change in the frequency will cause the opening to be continuously adjusted, which is not conducive to the stable control of the system. Taking the heating mode as an example: with the stable operation of heating, the temperature of the coil gradually increases until it reaches the maximum value. When the maximum value is higher than the set protection temperature value, the compressor frequency will decrease. If the set frequency is too small, the fine-tuning of the frequency change can meet the system protection requirements and simultaneously adjust the opening of the first control valve Y1 and the opening of the second control valve Y2 to the set opening, which is not conducive to the balance of the system and the high efficiency of control change.

In some embodiments, after the change value of the operating frequency of the compressor per unit time is greater than the set frequency, and the first regulating valve opening Y1 and the second regulating valve opening Y2 are adjusted to the set opening, stable operation After the first set time, the first regulating valve opening Y1 and the second regulating valve opening Y2 are adjusted. Optionally, the second set time is 15 to 20 minutes. Optionally, the second set time is 15 minutes, 16 minutes, 17 minutes, 18 minutes, 19 minutes or 20 minutes. Maintain stable operation for the first set time to ensure that the entire system is in a stable and balanced state. At this time, adjusting the opening degree of the first regulating valve Y1 and the opening degree of the second regulating valve Y2 can reduce the pressure of the evaporator.

In some embodiments, the initial opening degrees of the first regulating valve opening degree Y1 and the second regulating valve opening degree Y2 are set opening degrees each time the power is turned on, and the regulating valve is adjusted for the first set time to maintain stable operation. The opening is adjusted.

In some embodiments, in the process of adjusting the first regulating valve opening degree Y1 and the second regulating valve opening degree Y2, the interval between two adjacent adjustments is greater than or equal to the second set time. Optionally, the second set time is 1-3 minutes. Optionally, the second set time is 1 minute, 2 minutes or 3 minutes.

In some embodiments, after the difference ΔT between the temperature T1 of the first evaporator coil and the temperature T2 of the second evaporator coil is converted from a value greater than the set temperature value to a value less than the set temperature value, a third set time interval Then judge the difference ΔT between the temperature T1 of the first evaporator coil and the temperature T2 of the second evaporator coil, and adjust the opening degree of the first regulating valve Y1 or the second regulating valve when ΔT is greater than the set temperature value. The opening degree of opening Y2. Wherein, the third set time is greater than the second set time. Optionally, the third set time is 5-10 minutes. Optionally, the third set time is 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes or 10 minutes.

In some embodiments, the opening degree of the regulating valve is greater than or equal to the set limit value, that is, after the opening degree of any regulating valve is adjusted to the set limit value, the regulating valve does not continue to decrease the opening degree. Optionally, set the limit to 0.3f to 0.5f. Optionally, set the limit to 0.3f, 0.4f or 0.5f. Among them, f is the maximum opening of the regulating valve.

Embodiments of the present disclosure provide an apparatus for controlling a dual-evaporator air conditioning system, including: a processor and a memory storing program instructions, the processor is configured to execute the above-mentioned program instructions when executing the program instructions. A method of controlling a dual-evaporator air conditioning system.

With reference to FIG. 6 , an embodiment of the present disclosure provides an apparatus for controlling a dual-evaporator air conditioning system, including a processor (processor) 600 and a memory (memory) 601 . Optionally, the apparatus may further include a communication interface (Communication Interface) 602 and a bus 603 . The processor 600 , the communication interface 602 , and the memory 601 can communicate with each other through the bus 603 . Communication interface 602 may be used for information transfer. The processor 600 may invoke logic instructions in the memory 601 to execute the method for the control of the dual-evaporator air conditioning system of the above-described embodiments.

In addition, the above-mentioned logic instructions in the memory 601 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

As a computer-readable storage medium, the memory 601 can be used to store software programs and computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 600 executes the function application and data processing by executing the program instructions/modules stored in the memory 601, that is, the method for controlling the dual-evaporator air conditioning system in the above embodiment is implemented.

The memory 601 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 601 may include high-speed random access memory, and may also include non-volatile memory.

Embodiments of the present disclosure provide an air conditioner, including the above-mentioned device for controlling a dual-evaporator air conditioning system.

Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions, where the computer-executable instructions are configured to execute the above-mentioned method for controlling a dual-evaporator air conditioning system.

Embodiments of the present disclosure provide a computer program product, where the computer program product includes a computer program stored on a computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, causes all The computer executes the above-described method for dual-evaporator air conditioning system control.

The above-mentioned computer-readable storage medium may be a transient computer-readable storage medium, and may also be a non-transitory computer-readable storage medium.

The technical solutions of the embodiments of the present disclosure may be embodied in the form of software products, and the computer software products are stored in a storage medium and include one or more instructions to enable a computer device (which may be a personal computer, a server, or a network equipment, etc.) to execute all or part of the steps of the methods described in the embodiments of the present disclosure. The aforementioned storage medium may be a non-transitory storage medium, including: U disk, removable hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk, etc. A medium that can store program codes, and can also be a transient storage medium.

The foregoing description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. The examples are only representative of possible variations. Unless expressly required, individual components and functions are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. Also, the terms used in this application are used to describe the embodiments only and not to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a" (a), "an" (an) and "the" (the) are intended to include the plural forms as well, unless the context clearly dictates otherwise. . Similarly, the term "and/or" as used in this application is meant to include any and all possible combinations of one or more of the associated listings. Additionally, when used in this application, the term "comprise" and its variations "comprises" and/or including and/or the like refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, or device that includes the element. Herein, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, reference may be made to the description of the method section for relevant parts.

Those skilled in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. Skilled artisans may use different methods for implementing the described functionality for each particular application, but such implementations should not be considered beyond the scope of the disclosed embodiments. The skilled person can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units can refer to the corresponding processes in the foregoing method embodiments, and details are not repeated here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to apparatuses, devices, etc.) may be implemented in other ways. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units may only be a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be combined Or it can be integrated into another system, or some features can be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. This embodiment may be implemented by selecting some or all of the units according to actual needs. In addition, each functional unit in the embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more functions for implementing the specified logical function(s) executable instructions. In some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, operations or steps corresponding to different blocks may also occur in different sequences than those disclosed in the description, and sometimes there is no specific relationship between different operations or steps. order. For example, two consecutive operations or steps may, in fact, be performed substantially concurrently, or they may sometimes be performed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented in special purpose hardware-based systems that perform the specified functions or actions, or special purpose hardware implemented in combination with computer instructions.

Claims (10)

1. A method for dual evaporator air conditioning system control, comprising:

acquiring an air conditioning system operation mode, a first evaporator coil temperature T1 and a second evaporator coil temperature T2;

and in the case that the difference DeltaT between the first evaporator coil temperature T1 and the second evaporator coil temperature T2 is larger than a set temperature value, adjusting a first adjusting valve opening Y1 and/or adjusting a second adjusting valve opening Y2 according to the air conditioning system operation mode and the difference DeltaT.

2. The method of claim 1, wherein adjusting a first regulator valve opening Y1, and/or adjusting a second regulator valve opening Y2, as a function of the air conditioning system operating mode and the difference Δ T comprises:

controlling the second regulating valve opening degree Y2 to be reduced when the air-conditioning system operation mode is a cooling mode and the first evaporator coil temperature T1 is greater than the second evaporator coil temperature T2;

and controlling the opening degree Y1 of the first regulating valve to be reduced when the operation mode of the air conditioning system is a cooling mode and the first evaporator coil temperature T1 is less than the second evaporator coil temperature T2.

3. The method of claim 2, wherein adjusting a first regulator valve opening Y1, and/or adjusting a second regulator valve opening Y2, as a function of the air conditioning system operating mode and the difference Δ T comprises:

controlling the first regulating valve opening degree Y1 to be reduced when the air conditioning system operation mode is a heating mode and the first evaporator coil temperature T1 is greater than the second evaporator coil temperature T2;

and controlling the opening degree Y2 of the second regulating valve to be reduced under the condition that the operation mode of the air conditioning system is a heating mode and the temperature T1 of the first evaporator coil is less than the temperature T2 of the second evaporator coil.

4. The method of claim 1, wherein adjusting a first regulator valve opening Y1, and/or adjusting a second regulator valve opening Y2, as a function of the air conditioning system operating mode and the difference Δ T comprises:

when the air conditioning system operation mode is a cooling mode and the difference DeltaT is smaller than or equal to a first set difference, if the first evaporator coil temperature T1 is greater than the second evaporator coil temperature T2, controlling the opening degree Y2 of the second regulating valve to be reduced; controlling the first regulating valve opening degree Y1 to decrease if the first evaporator coil temperature T1 is less than the second evaporator coil temperature T2;

when the air conditioning system operation mode is a cooling mode and the difference DeltaT is greater than the first set difference, if the first evaporator coil temperature T1 is greater than the second evaporator coil temperature T2, controlling the first regulating valve opening Y2 to increase and controlling the second regulating valve opening Y1 to decrease; if the first evaporator coil temperature T1 is less than the second evaporator coil temperature T2, the first regulating valve opening Y1 is controlled to decrease and the second regulating valve opening Y2 is controlled to increase.

5. The method of claim 4, wherein adjusting a first regulator valve opening Y1, and/or adjusting a second regulator valve opening Y2, as a function of the air conditioning system operating mode and the difference Δ T comprises:

if the air conditioning system operation mode is a heating mode and the difference DeltaT is smaller than or equal to a second set difference, controlling the opening degree Y1 of the first regulating valve to be reduced if the first evaporator coil temperature T1 is greater than the second evaporator coil temperature T2; controlling the second regulating valve opening degree Y2 to decrease if the first evaporator coil temperature T1 is less than the second evaporator coil temperature T2;

when the air conditioning system operation mode is a heating mode and the difference DeltaT is greater than the second set difference, if the first evaporator coil temperature T1 is greater than the second evaporator coil temperature T2, controlling the first regulating valve opening Y1 to be reduced and controlling the second regulating valve opening Y2 to be increased; if the first evaporator coil temperature T1 is less than the second evaporator coil temperature T2, the first regulating valve opening Y1 is controlled to increase and the second regulating valve opening Y2 is controlled to decrease.

6. The method of any one of claims 1 to 5, further comprising, prior to adjusting the first regulating valve opening Y1, and/or, prior to adjusting the second regulating valve opening Y2:

determining the adjustment quantity of the opening of the adjusting valve according to the difference value delta T;

and determining the target regulating valve opening according to the regulating quantity and the current regulating valve opening.

7. The method according to claim 6, characterized in that the difference Δ T and the adjustment quantity have the following relationship:

△Y＝k*△T*f

wherein Δ Y is the adjustment amount; k is an adjustment coefficient; f is the maximum opening of the regulating valve.

8. The method of claim 6 or 7, further comprising: and adjusting the first and second adjusting valve openings Y1 and Y2 to a set opening degree in case that a variation value of the operating frequency of the compressor per unit time is greater than a set frequency.

9. An apparatus for dual evaporator air conditioning system control comprising a processor and a memory having stored thereon program instructions, wherein the processor is configured to perform the method for dual evaporator air conditioning system control of any of claims 1-8 when executing the program instructions.

10. An air conditioner comprising two evaporators and the apparatus for controlling a dual evaporator air conditioning system as claimed in claim 9.

Images