CN214523266U

CN214523266U - Parking air conditioner and air conditioning system

Info

Publication number: CN214523266U
Application number: CN202023344183.9U
Authority: CN
Inventors: 李俊峰; 吴会丽; 朱守朝
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-29
Anticipated expiration: 2030-12-30

Abstract

The application provides a parking air conditioner and an air conditioning system, wherein the parking air conditioner comprises a shell, an evaporator, a controller component and a compressor assembly, wherein the shell is provided with an accommodating cavity and an air return opening; the evaporator is positioned in the accommodating cavity; the controller assembly is positioned in the accommodating cavity and positioned on one side of the evaporator, the controller assembly comprises a controller body structure and a heat dissipation structure, the heat dissipation structure is positioned on the surface of the controller body structure, the controller body structure comprises a power device, the heat dissipation structure is used for dissipating heat of the power device, the controller body structure, the evaporator and the shell form a return air cavity, the heat dissipation structure is positioned in the return air cavity, and the shell corresponding to the return air cavity is provided with a return air inlet; the compressor assembly is located and holds intracavity and evaporimeter intercommunication. The parking air conditioner ensures that the reliability of the parking air conditioner is better and ensures that the comfort in the vehicle is better.

Description

Parking air conditioner and air conditioning system

Technical Field

The application relates to the field of parking air conditioners, in particular to a parking air conditioner and an air conditioning system.

Background

With the rapid development of the logistics industry, the number of freight trucks is gradually increased, trucks are mostly transported for a long distance, and non-driving states such as traffic jam, loading and unloading, rest and the like are difficult to avoid in the driving process. When the air conditioner of the original truck is started, the engine cannot be stopped, and the driver of the truck is required to bear high oil consumption cost and increased maintenance cost caused by engine abrasion after long-term use. The appearance of the parking air conditioner relieves the dilemma that a truck driver does not start the air conditioner due to overhigh cost, provides a new solution for comfortable traveling, adopts 24V power supply of a vehicle-mounted storage battery to supply power for the parking air conditioner, does not consume the energy of a fuel engine, and has the advantages of comfort, energy conservation and the like.

The overhead integral parking air conditioner has the advantages of compact and simple structure, convenience in installation and the like, and becomes a mainstream product of the parking air conditioner. However, in the existing product, the controller is usually directly placed on the parking air conditioner chassis, and generally cannot be placed at the position where air circulates in order to meet the waterproof requirement, and an active heat dissipation mode cannot be configured, and in addition, the overhead air conditioner is influenced by solar radiation, the temperature inside the shell can reach more than 60 ℃, and the factors can bring great influences on the temperature rise and the reliability of components of the controller. Many products adopt the method of restriction complete machine power or electric current, prevent other reliability problems such as power device heating, consequently led to parking air conditioner refrigerating output not enough under the daytime especially has solar radiation's the condition, led to the travelling comfort in the car relatively poor.

The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The main object of this application is to provide a parking air conditioner and air conditioning system to solve the relatively poor problem of travelling comfort of the parking air conditioner among the prior art.

According to an aspect of an embodiment of the present invention, there is provided a parking air conditioner, comprising a housing, an evaporator, a controller assembly and a compressor assembly, wherein the housing has a receiving cavity, and the housing further has an air return opening; the evaporator is positioned in the accommodating cavity; the controller assembly is positioned in the accommodating cavity and positioned on one side of the evaporator, the controller assembly comprises a controller body structure and a heat dissipation structure, the heat dissipation structure is positioned on the surface of the controller body structure, the controller body structure comprises a power device, the heat dissipation structure is used for dissipating heat of the power device, the controller body structure, the evaporator and the shell form a return air cavity, the heat dissipation structure is positioned in the return air cavity, and the shell corresponding to the return air cavity is provided with the return air inlet; the compressor assembly is located in the accommodating cavity and the evaporator is communicated.

Optionally, the controller assembly is disposed obliquely within the receiving cavity.

Optionally, the height direction of the heat dissipation structure is perpendicular to the wind direction in the return air cavity.

Optionally, the controller assembly comprises a box body with an opening, a box cover, a mounting plate and a main plate, wherein a first accommodating port is formed on the surface of the box body opposite to the opening; the box cover is arranged on the opening of the box body in a covering manner and forms a control accommodating cavity with the box body; the mounting plate is provided with a second accommodating port, the box body is arranged on the mounting plate, and the first accommodating port and the second accommodating port are correspondingly arranged; the mainboard comprises a mainboard body and a heat dissipation structure, the mainboard body further comprises a power device, the heat dissipation structure is in contact with the power device, the mainboard body is located in the control containing cavity, and the heat dissipation structure protrudes out of the box body through the first containing port and the second containing port.

Optionally, the parking air conditioner further comprises a throttling component, a condensing fan component, a condenser, a chassis component, an evaporator assembly, an evaporating fan component and an internal machine component, wherein the throttling component is located in the accommodating cavity and communicated with the evaporator; the condensation fan assembly is positioned in the accommodating cavity and communicated with the throttling assembly; the condenser is positioned in the accommodating cavity and communicated with the condensing fan assembly and the compressor assembly respectively; the chassis assembly is positioned in the accommodating cavity and positioned on the other side of the condensing fan assembly; the evaporator assembly is positioned in the accommodating cavity; the evaporation fan assembly is positioned in the accommodating cavity and positioned on one side of the evaporator; the inner machine component is located in the accommodating cavity and located on the air outlet side of the evaporation fan component, and the air outlet of the inner machine component is the air outlet of the air conditioner.

According to the utility model discloses on the other hand, still provide an air conditioning system, include: any one of the parking air conditioners.

The application discloses parking air conditioner, including casing, evaporimeter, controller subassembly and compressor assembly, the controller subassembly includes controller body structure and heat radiation structure, controller body structure the evaporimeter and the casing forms the return air chamber, heat radiation structure is located in the return air chamber, just the return air chamber corresponds the casing has the return air inlet. The utility model provides a parking air conditioner is through inciting somebody to action heat radiation structure places in the return air chamber, guaranteed heat radiation structure can dispel the heat through return air current in the car, guaranteed on the controller subassembly heat radiation structure's temperature rise control has guaranteed in lower scope parking air conditioner's reliability is better, has avoided causing the relatively poor problem of travelling comfort in the car among the prior art for preventing the reliability problem, has guaranteed that the travelling comfort in the car is better. In addition, in the scheme, the heat dissipation structure is only arranged in the return air duct of the evaporator, so that the problem that condensation is easily caused when the whole controller assembly is placed in the return air duct is avoided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

fig. 1 shows a front schematic view of a parking air conditioner according to an embodiment of the present application;

fig. 2 shows a front side schematic view of a parking air conditioner according to an embodiment of the present application;

FIG. 3 shows an exploded schematic view of a controller assembly according to an embodiment of the present application;

FIG. 4 shows a schematic diagram of air circulation in a parking air conditioner according to an embodiment of the present application;

fig. 5 shows a flowchart generated by a control method of a parking air conditioner according to an embodiment of the present application;

FIG. 6 is a schematic view showing time-varying control parameters of a parking air conditioner according to an embodiment of the present application;

fig. 7 shows a schematic diagram of a control device of a parking air conditioner according to an embodiment of the present application.

Wherein the figures include the following reference numerals:

100. a throttle assembly; 101. a condensing fan assembly; 102. a condenser; 103. a compressor assembly; 104. a chassis assembly; 105. an evaporator assembly; 106. a controller assembly; 106a, a box cover; 106b, a cartridge body; 106c, a main board body; 106d, a heat dissipation structure; 106e, a mounting plate; 107. a housing; 108. an evaporator; 109. an evaporation fan assembly; 110. an air return opening; 111. an air outlet of the air conditioner; 112. an inner machine assembly.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.

As mentioned in the background of the invention, the comfort of the parking air conditioner in the prior art is poor, and in order to solve the above problems, in an exemplary embodiment of the present application, a parking air conditioner and an air conditioning system are provided.

According to an exemplary embodiment of the present application, there is provided a parking air conditioner, as shown in fig. 1 and 2, including a housing 107, an evaporator 108, a controller assembly 106, and a compressor assembly 103, wherein the housing 107 has a receiving cavity, the housing 107 further has a return air inlet 110; the evaporator 108 is located in the accommodating cavity; the controller assembly 106 is located in the accommodating cavity and located at one side of the evaporator 108, the controller assembly 106 includes a controller body structure and a heat dissipation structure 106d, the heat dissipation structure 106d is located on a surface of the controller body structure, the controller body structure includes a power device, the heat dissipation structure 106d is used for dissipating heat of the power device, the controller body structure, the evaporator 108 and the housing 107 form a return air cavity, the heat dissipation structure is located in the return air cavity, and the housing 107 corresponding to the return air cavity has the return air opening 110; the compressor assembly 103 is located in the accommodating cavity and the evaporator 108 is communicated with the accommodating cavity.

The parking air conditioner comprises a shell, an evaporator, a controller assembly and a compressor assembly, wherein the controller assembly comprises a controller body structure and a heat dissipation structure, the controller body structure, the evaporator and the shell form an air return cavity, the heat dissipation structure is located in the air return cavity, and the shell corresponding to the air return cavity is provided with the air return opening. The above-mentioned parking air conditioner of this application through placing above-mentioned heat radiation structure in above-mentioned return air chamber, has guaranteed that above-mentioned heat radiation structure can dispel the heat through return air current in the car, has guaranteed that above-mentioned heat radiation structure's on the above-mentioned controller subassembly temperature rise control is in lower within range, has guaranteed that above-mentioned parking air conditioner's reliability is better, has avoided causing the relatively poor problem of travelling comfort in the car for preventing the reliability problem among the prior art, has guaranteed that the travelling comfort in the car is better. In addition, in the scheme, the heat dissipation structure is only arranged in the return air duct of the evaporator, so that the problem that condensation is easily caused when the whole controller assembly is placed in the return air duct is avoided.

In a specific embodiment, the heat dissipation structure is a heat dissipation plate, but the heat dissipation structure may also be other heat dissipation devices or components.

According to a specific embodiment of the present application, the controller assembly is obliquely disposed within the receiving cavity. The inclination angle of the controller assembly can be reasonably arranged according to the space limitation of the shell, and the range of the inclination angle can be 0-90 degrees.

In another specific embodiment of this application, above-mentioned heat radiation structure's direction of height is perpendicular with the wind direction of above-mentioned return air intracavity, that is to say, above-mentioned heat radiation structure is parallel with the wind direction of above-mentioned return air intracavity, and the surface that the air can flow through heat radiation structure very smoothly like this has guaranteed that heat radiation structure causes for the return air wind channel in return air chamber windage resistance less, has alleviated above-mentioned heat radiation structure to original return air wind channel's influence betterly.

According to another specific embodiment of the present application, as shown in fig. 3, the controller assembly 106 includes a box body 106b having an opening, a box cover 106a, a mounting plate 106e, and a main plate, wherein a surface of the box body 106b opposite to the opening has a first receiving opening; the box cover 106a is covered on the opening of the box body 106b, and forms a control accommodating cavity with the box body 106 b; the mounting plate 106e has a second receiving opening, the box body 106b is disposed on the mounting plate 106e, and the first receiving opening and the second receiving opening are disposed correspondingly; the motherboard includes a motherboard body 106c and a heat dissipation structure 106d, the motherboard body 106c further includes a power device, the heat dissipation structure 106d is disposed in contact with the power device, the motherboard body 106c is located in the control accommodation cavity, and the heat dissipation structure 106d protrudes from the box body 106b through the first accommodation opening and the second accommodation opening. According to the method, the heat dissipation structure is arranged in contact with the power device, so that heat generated by heating of the power device can be quickly transferred to the heat dissipation structure, the temperature rise of the power device is further controlled in a lower range, and the parking air conditioner is further guaranteed to be good in reliability.

According to another specific embodiment of the present application, as shown in fig. 1 and fig. 2, the parking air conditioner further includes a throttling component 100, a condensing fan component 101, a condenser 102, a chassis component 104, an evaporator assembly 105, an evaporating fan component 109 and an internal machine component 112, wherein the throttling component 100 is located in the accommodating cavity and is communicated with the evaporator 108; the condensing fan assembly 101 is located in the accommodating cavity and is communicated with the throttling assembly 100; the condenser 102 is located in the accommodating cavity and is communicated with the condensing fan assembly 101 and the compressor assembly 103 respectively; the chassis assembly 104 is located in the accommodating cavity and located on the other side of the condensing fan assembly 101; the evaporator assembly 105 is located in the receiving cavity; the evaporation fan assembly 109 is located in the accommodating cavity and located at one side of the evaporator 108; the inner unit assembly is located in the accommodating cavity and located on the air outlet side of the evaporation fan assembly 109, and the air outlet of the inner unit assembly 112 is the air outlet 111 of the air conditioner.

In a specific embodiment, as shown in fig. 4, the air circulation process of the parking air conditioner of the present application is: the refrigerant is compressed from the compressor assembly 103 into high-temperature high-pressure superheated gas to enter the condenser 102, the refrigerant in the condenser 102 is radiated by the condensing fan component 101 to form a medium-temperature supercooled liquid refrigerant, the refrigerant passes through the throttling component 100 to form a low-temperature gas-liquid two-phase refrigerant, and then the refrigerant enters the evaporator 108, and the low-temperature gas-liquid two-phase refrigerant absorbs the heat of air in the vehicle and is evaporated into superheated steam to return to the air suction port of the compressor assembly 103. Meanwhile, the air in the vehicle is drawn by the evaporation fan assembly 109, flows through the evaporator 108 from the inside of the vehicle through the air return opening 110, is cooled into low-temperature dry air, then returns to the inside of the vehicle again through the air outlet, and the effect of reducing the temperature in the vehicle is achieved in a circulating manner.

According to another exemplary embodiment of the present application, there is provided a control method of a parking air conditioner.

Fig. 5 is a flowchart of a control method of a parking air conditioner according to an embodiment of the present application. As shown in fig. 5, the method comprises the steps of:

step S101, obtaining air flow and temperature in a vehicle, and calculating a first target frequency of compressor operation according to the air flow and the temperature in the vehicle;

step S102, performing PI (proportional-integral) operation or PID (proportion-integral) operation according to the temperature in the vehicle and a first preset temperature to obtain a second target frequency, wherein the PI operation is proportional-integral operation which is an algorithm for controlling through proportion and integral of deviation, and the PID operation is proportional-integral-Differential operation which is an algorithm for controlling through proportion, integral and Differential of deviation;

step S103, determining the minimum of the first target frequency and the second target frequency as a target frequency;

step S104, controlling the compressor to operate according to the target frequency, and acquiring the temperature of a power device in real time;

and step S105, controlling at least the running frequency of the compressor according to the relationship between the temperature of the power device and the temperature threshold value.

The control method of the parking air conditioner comprises the steps of firstly obtaining the air flow and the temperature in the vehicle, and calculating a first target frequency of the operation of a compressor according to the air flow and the temperature in the vehicle; then according to the temperature in the vehicle and a first preset temperature, performing PI operation or PID operation to obtain a second target frequency; then, determining the minimum target frequency in the first target frequency and the second target frequency; controlling the compressor to operate according to the target frequency, and acquiring the temperature of a power device in real time; and finally, at least controlling the operating frequency of the compressor according to the relationship between the temperature of the power device and the temperature threshold value. According to the method, the running frequency of the compressor is controlled, so that the temperature in the automobile is lower, the air conditioner flow is larger, and the comfort in the automobile is better. Meanwhile, the heat dissipation effect of the heat dissipation structure of the parking air conditioner is better, the temperature rise of a power device of the parking air conditioner is lower, the reliability of the parking air conditioner is better, and the problem that the comfort in the vehicle is poor due to the fact that the reliability problem is solved in the prior art.

In a specific embodiment of the present application, calculating a first target frequency of compressor operation based on the air flow rate in the vehicle and the temperature in the vehicle includes: determining a flow rate range to which the air flow rate in the vehicle belongs, the flow rate range including a first flow rate range, a second flow rate range and a third flow rate range, the first flow rate range being a range smaller than or equal to a first predetermined flow rate, the second flow rate range being a range larger than the first predetermined flow rate and smaller than or equal to a second predetermined flow rate, the third flow rate range being a range larger than the second predetermined flow rate, the first predetermined flow rate being smaller than the second predetermined flow rate; determining a temperature range to which the temperature in the vehicle belongs, the temperature range including a first temperature range, a second temperature range and a third temperature range, the first temperature range being a range equal to or less than a first predetermined temperature, the second temperature range being a range greater than the first predetermined temperature and less than a second predetermined temperature, the third temperature range being a range equal to or greater than the second predetermined temperature, the first predetermined temperature being less than the second predetermined temperature; the first target frequency is determined based on the flow rate range to which the air flow rate in the vehicle belongs and the temperature range to which the temperature in the vehicle belongs. Therefore, the temperature in the vehicle is further ensured to be lower, the air conditioner flow is further ensured to be larger, and the heat radiation effect of the heat radiation structure of the parking air conditioner is further ensured to be better.

In order to further ensure that the heat dissipation effect of the heat dissipation structure of the parking air conditioner is good, further ensure that the temperature rise of a power device of the parking air conditioner is low, and further ensure that the reliability of the parking air conditioner is good, in an actual application process, the first target frequency is determined according to the flow range to which the air flow in the vehicle belongs and the temperature range to which the temperature in the vehicle belongs, and the method includes the following steps: determining the first target frequency to be a first predetermined frequency when the temperature in the vehicle is within the first temperature range and the air flow rate in the vehicle is within the first flow rate range, which indicates that the temperature in the vehicle is low and the air flow rate is small; determining the first target frequency to be a second predetermined frequency in a case where the temperature in the vehicle is within the first temperature range and the air flow rate in the vehicle is within the second flow rate range, which indicates that the temperature in the vehicle is low and the air flow rate is medium, the second predetermined frequency being greater than the first predetermined frequency; determining the first target frequency to be a third predetermined frequency, the third predetermined frequency being greater than the second predetermined frequency, when the temperature in the vehicle is within the first temperature range and the air flow rate in the vehicle is within the third flow rate range, which indicates that the temperature in the vehicle is low and the air flow rate is high; determining that the first target frequency is a fourth predetermined frequency when the temperature in the vehicle is within the second temperature range and the air flow rate in the vehicle is within the first flow rate range, the air flow rate being smaller and representing the medium temperature in the vehicle; determining the first target frequency to be a fifth predetermined frequency when the temperature in the vehicle is within the second temperature range and the air flow rate in the vehicle is within the second flow rate range, the temperature in the vehicle being moderate and the air flow rate being moderate, the fifth predetermined frequency being greater than the fourth predetermined frequency; determining the first target frequency to be a sixth predetermined frequency, the sixth predetermined frequency being greater than the fifth predetermined frequency, when the temperature in the vehicle is within the second temperature range and the air flow rate in the vehicle is within the third flow rate range, the air flow rate being indicative of a moderate temperature in the vehicle and the air flow rate being greater in this case; determining that the first target frequency is a seventh predetermined frequency when the temperature in the vehicle is within the third temperature range and the air flow rate in the vehicle is within the first flow rate range, which indicates that the temperature in the vehicle is high and the air flow rate is low; determining the first target frequency to be an eighth predetermined frequency, the eighth predetermined frequency being greater than the seventh predetermined frequency, in a case where the temperature in the vehicle is within the third temperature range and the air flow rate in the vehicle is within the second flow rate range, which is indicative of a high temperature in the vehicle and a medium air flow rate; in a case where the temperature in the vehicle is within the third temperature range and the air flow rate in the vehicle is within the third flow rate range, which is indicative of a high temperature in the vehicle and a high air flow rate, the first target frequency is determined to be a ninth predetermined frequency, and the ninth predetermined frequency is greater than the eighth predetermined frequency.

In a specific embodiment, the first predetermined flow rate is V4, the second predetermined flow rate is V2, the first predetermined temperature is Tin2, the second predetermined temperature is Tin1, the first predetermined frequency is F3, the second predetermined frequency is F3 +. DELTA.F 5, the third predetermined frequency is F3 +. DELTA.F 6, the fourth predetermined frequency is F2, the fifth predetermined frequency is F2 +. DELTA.F 3, the sixth predetermined frequency is F2 +. DELTA.F 4, the seventh predetermined frequency is F1, the eighth predetermined frequency is F1 +. DELTA.F 1, and the ninth predetermined frequency is F1 +. DELTA.F 2, and the correspondence relationship is shown in the following table.

In another specific embodiment of this application, above-mentioned parking air conditioner still includes interior subassembly and interior fan, and above-mentioned interior subassembly is located and holds the intracavity and is located the air-out side of evaporating fan subassembly, and the air outlet of above-mentioned interior subassembly is the air outlet of above-mentioned air conditioner, and above-mentioned interior subassembly includes air-out wind channel and display panel, according to the big or small relation of the temperature of above-mentioned power device and temperature threshold value, controls the operating frequency of above-mentioned compressor at least, include: determining whether the temperature of the power device is greater than the temperature threshold; when the temperature of the power device is larger than the temperature threshold value, reducing the running frequency of the compressor and increasing the rotating speed of the inner fan; and controlling the compressor to continue to operate at the target frequency when the temperature of the power device is less than or equal to the temperature threshold. Therefore, the temperature rise of the power device is further ensured to be low, and the parking air conditioner is further ensured to have good reliability.

In an actual application process, after the operating frequency of the compressor is reduced and the rotating speed of the inner fan is increased for a predetermined time period, at least the operating frequency of the compressor is controlled according to the relationship between the temperature of the power device and the temperature threshold, and the method includes the following steps: and controlling the air conditioner to operate according to the target frequency.

Fig. 6 shows a graph of time variation of various parameters of the parking air conditioner according to a specific embodiment of the present application. The curve diagram describes the change of each parameter of the parking air conditioner in the conventional vehicle interior temperature drop process, and the change is the embodiment of the system state parameter of the parking air conditioner in the actual operation. Wherein, the first curve 113 is the variation of the temperature of the power device of the controller with time, and the second curve 114 is the variation of the output frequency of the compressor with time; the third curve 115 is the variation of the temperature in the vehicle with time; the fourth curve 116 is the air flow rate in the vehicle over time. According to the temperature change in the vehicle and the temperature rise condition of a power device of the controller, the output frequency change of the compressor in the whole process is divided into the following four control stages:

the time period of 0-t 1 is a starting operation stage of the whole machine, in the stage, the temperature Tin in the vehicle is highest and starts to slowly fall, the temperature of a power device is lower (equal to the room temperature) but starts to slowly rise, the frequency of the compressor is controlled to quickly rise to the highest frequency F1 after the machine is started, and the maximum air flow V1 is controlled. In the stage, the output frequency of the compressor is gradually increased from small to small, and the heat generated by the power device is slowly increased; at the moment, although the heat exchange temperature difference between the controller radiating fin and the temperature in the vehicle is small; however, because the air volume of the internal machine is large (corresponding to the air volume of V1), that is, the air velocity flowing through the heat dissipation structure 106d is the largest, the heat dissipation requirement of the controller can be satisfied. Therefore, the requirement of rapid frequency rising of the air conditioner compressor can be met at the stage, and the temperature rising requirement of a power device of the controller can also be met.

the time period from t1 to t2 is a rapid cooling operation stage, in order to ensure the temperature reduction effect in the vehicle, the frequency of the compressor is maintained to be the highest frequency F1, the air flow is maintained to be the maximum V1, the temperature in the vehicle is rapidly reduced, the temperature of the power device begins to rapidly rise and reaches the peak TP2, and the power device tends to be stable. In the process, the power device of the controller generates heat maximally and constantly, the temperature Tin in the vehicle is reduced, the temperature of the radiating fin is increased, and the heat exchange temperature difference between the radiating fin of the controller and the temperature in the vehicle is quickly pulled open; and the air volume of the internal machine is the maximum (V1), namely the air speed flowing through the heat dissipation structure 106d is the maximum; the temperature rise of the module and the temperature fall in the vehicle have hysteresis, the hysteresis changes of the module and the temperature fall in the vehicle have a complementary relation, the temperature difference between the temperature in the vehicle and the radiating fins is rapidly increased along with the temperature rise of the module and the temperature fall in the vehicle, and the surface wind speed of the radiating fins is the largest, so that the radiating efficiency of the radiating fins in the process is better and better, the cooling requirement of the controller can be met, the compressor can be guaranteed to output at the maximum frequency, and the temperature fall effect in the vehicle is guaranteed.

And the time period from t2 to t3 is an in-vehicle load adaptation operation stage, and when the in-vehicle temperature is reduced to a certain value, the output frequency of the compressor is controlled to be reduced in a step manner, so that the in-vehicle temperature is prevented from being oscillated due to excessive reduction of the in-vehicle temperature. The heat generation of the power device of the controller begins to reduce, the air volume in the automobile also begins to reduce, but the temperature in the automobile still drops, and the temperature difference between the temperature in the automobile and the heat radiating fins becomes the dominant factor of the heat exchange efficiency of the heat radiating fins in the process, so the temperature of the power device begins to drop in the process.

the time period from t3 to t4 is an in-vehicle temperature stable maintaining operation stage, in the stage, the in-vehicle temperature reaches a set temperature, the output frequency of the compressor is controlled to be F2, and the in-vehicle temperature can be maintained only enough; in order to meet the requirement of comfort in the vehicle, the air volume of the internal machine is also reduced to the minimum V5; at this time, the heating value of the power device of the controller is the minimum, and the in-vehicle temperature Tin2 is the minimum, so that even the minimum wind speed can meet the cooling requirement of the radiating fin.

It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.

The embodiment of the present application further provides a control device of a parking air conditioner, and it should be noted that the control device of the parking air conditioner of the embodiment of the present application may be used to execute the control method for the parking air conditioner provided in the embodiment of the present application. The following describes a control device for a parking air conditioner according to an embodiment of the present application.

Fig. 7 is a schematic diagram of a control device of a parking air conditioner according to an embodiment of the present application. As shown in fig. 7, the apparatus includes an acquisition unit 10 for acquiring an air flow rate and a temperature in a vehicle, and calculating a first target frequency of compressor operation based on the air flow rate and the temperature in the vehicle, an arithmetic unit 20, a determination unit 30, a first control unit 40, and a second control unit 50; the operation unit is used for performing PI operation or PID operation according to the temperature in the vehicle and a first preset temperature to obtain a second target frequency, wherein the PI operation is proportional integral operation and is an algorithm for controlling through proportion and integral of deviation, and the PID operation is proportional integral derivative operation and is an algorithm for controlling through proportion, integral and derivative of deviation; the determining unit 30 is configured to determine a minimum target frequency of the first target frequency and the second target frequency; the first control unit 40 is configured to control the compressor to operate according to the target frequency, and obtain the temperature of the power device in real time; the second control unit 50 is configured to control at least an operating frequency of the compressor according to a magnitude relationship between a temperature of the power device and a temperature threshold.

The control device of the parking air conditioner acquires the air flow rate and the temperature in the vehicle through the acquisition unit, and calculates a first target frequency of the operation of the compressor according to the air flow rate and the temperature in the vehicle; performing PI (proportional integral) operation or PID (proportion integration differentiation) operation by the operation unit according to the temperature in the vehicle and a first preset temperature to obtain a second target frequency; determining, by the determining unit, a minimum target frequency of the first target frequency and the second target frequency; controlling the compressor to operate according to the target frequency through the first control unit, and acquiring the temperature of a power device in real time; and controlling at least the operating frequency of the compressor by the second control unit according to the relationship between the temperature of the power device and the temperature threshold value. According to the method, the running frequency of the compressor is controlled, so that the temperature in the automobile is lower, the air conditioner flow is larger, and the comfort in the automobile is better. Meanwhile, the heat dissipation effect of the heat dissipation structure of the parking air conditioner is better, the temperature rise of a power device of the parking air conditioner is lower, the reliability of the parking air conditioner is better, and the problem that the comfort in the vehicle is poor due to the fact that the reliability problem is solved in the prior art.

In a specific embodiment of the present application, the acquiring unit includes a first determining subunit, a second determining subunit, and a third determining subunit, where the first determining subunit is configured to determine a flow rate range to which the air flow rate in the vehicle belongs, the flow rate range includes a first flow rate range, a second flow rate range, and a third flow rate range, the first flow rate range is a range smaller than or equal to a first predetermined flow rate, the second flow rate range is a range larger than the first predetermined flow rate and smaller than or equal to a second predetermined flow rate, the third flow rate range is a range larger than the second predetermined flow rate, and the first predetermined flow rate is smaller than the second predetermined flow rate; the second determining subunit is configured to determine a temperature range to which the temperature in the vehicle belongs, the temperature range including a first temperature range, a second temperature range, and a third temperature range, the first temperature range being a range equal to or lower than a first predetermined temperature, the second temperature range being a range greater than the first predetermined temperature and smaller than a second predetermined temperature, the third temperature range being a range equal to or higher than the second predetermined temperature, the first predetermined temperature being smaller than the second predetermined temperature; the third determining subunit is configured to determine the first target frequency based on the flow rate range to which the air flow rate in the vehicle belongs and the temperature range to which the temperature in the vehicle belongs. Therefore, the temperature in the vehicle is further ensured to be lower, the air conditioner flow is further ensured to be larger, and the heat radiation effect of the heat radiation structure of the parking air conditioner is further ensured to be better.

In order to further ensure that the heat dissipation effect of the heat dissipation structure of the parking air conditioner is good, further ensure that the temperature rise of a power device of the parking air conditioner is low, and further ensure that the reliability of the parking air conditioner is good, in an actual application process, the third determining subunit includes a first determining module, a second determining module, a third determining module, a fourth determining module, a fifth determining module, a sixth determining module, a seventh determining module, an eighth determining module, and a ninth determining module, wherein the first determining module is configured to determine that the first target frequency is a first predetermined frequency, when the temperature in the vehicle is within the first temperature range and the air flow in the vehicle is within the first flow range, the first determining module represents that the temperature in the vehicle is low and the air flow is small; the second determining module is configured to determine the first target frequency to be a second predetermined frequency when the temperature in the vehicle is within the first temperature range and the airflow rate in the vehicle is within the second flow rate range, which is indicative of a low temperature in the vehicle and a medium airflow rate, and the second predetermined frequency is greater than the first predetermined frequency; the third determining module is configured to determine the first target frequency to be a third predetermined frequency, the third predetermined frequency being greater than the second predetermined frequency, when the temperature in the vehicle is within the first temperature range and the air flow rate in the vehicle is within the third flow rate range, which indicates that the temperature in the vehicle is low and the air flow rate in the vehicle is high; the fourth determining module is configured to determine that the first target frequency is a fourth predetermined frequency when the temperature in the vehicle is within the second temperature range and the airflow rate in the vehicle is within the first flow rate range, which indicates that the temperature in the vehicle is medium and the airflow rate is small; the fifth determining module is configured to determine that the first target frequency is a fifth predetermined frequency when the temperature in the vehicle is within the second temperature range and the airflow rate in the vehicle is within the second flow rate range, which is indicative of the temperature in the vehicle being moderate and the airflow rate being moderate, and the fifth predetermined frequency is greater than the fourth predetermined frequency; the sixth determining module is configured to determine that the first target frequency is a sixth predetermined frequency, and the sixth predetermined frequency is higher than the fifth predetermined frequency, when the temperature in the vehicle is within the second temperature range and the air flow rate in the vehicle is within the third flow rate range, which indicates that the temperature in the vehicle is medium and the air flow rate is high; the seventh determining module is configured to determine that the first target frequency is a seventh predetermined frequency when the temperature in the vehicle is within the third temperature range and the airflow rate in the vehicle is within the first flow rate range, which indicates that the temperature in the vehicle is high and the airflow rate is low; the eighth determining module is configured to determine that the first target frequency is an eighth predetermined frequency, and the eighth predetermined frequency is greater than the seventh predetermined frequency, when the temperature in the vehicle is within the third temperature range and the airflow rate in the vehicle is within the second flow rate range, which indicates that the temperature in the vehicle is high and the airflow rate in the vehicle is medium; the ninth determining module is configured to determine that the first target frequency is a ninth predetermined frequency, and the ninth predetermined frequency is greater than the eighth predetermined frequency, when the temperature in the vehicle is within the third temperature range and the air flow rate in the vehicle is within the third flow rate range, which indicates that the temperature in the vehicle is high and the air flow rate is high.

In another specific embodiment of the present application, the parking air conditioner further includes an inner unit assembly and an inner fan, the inner unit assembly is located in the accommodating cavity and located on an air outlet side of the evaporation fan assembly, an air outlet of the inner unit assembly is an air outlet of the air conditioner, the inner unit assembly includes an air outlet duct and a display panel, the second control unit includes a fourth determining subunit, a reducing subunit and a first control subunit, wherein the fourth determining subunit is configured to determine whether a temperature of the power device is greater than the temperature threshold; the reducing subunit is used for reducing the operating frequency of the compressor and increasing the rotating speed of the inner fan under the condition that the temperature of the power device is greater than the temperature threshold; the first control subunit is configured to control the compressor to continue operating at the target frequency when the temperature of the power device is less than or equal to the temperature threshold. Therefore, the temperature rise of the power device is further ensured to be low, and the parking air conditioner is further ensured to have good reliability.

In an actual application process, the second control unit includes a second control subunit, and the second control subunit is configured to control the air conditioner to operate according to the target frequency after reducing the operating frequency of the compressor and increasing the rotation speed of the internal fan for a predetermined time period.

The control device of the parking air conditioner comprises a processor and a memory, the acquisition unit, the operation unit, the determination unit, the first control unit, the second control unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.

The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problem that the comfort of the parking air conditioner in the prior art is poor is solved by adjusting the kernel parameters.

The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.

An embodiment of the utility model provides a storage medium has the procedure stored thereon, and this procedure realizes above-mentioned parking air conditioner's control method when being executed by the treater.

The embodiment of the utility model provides a treater, above-mentioned treater are used for the operation procedure, and wherein, above-mentioned parking air conditioner's control method is carried out in the operation of above-mentioned procedure.

The embodiment of the utility model provides an equipment, equipment include treater, memory and storage on the memory and can be at the procedure of treater operation, realize at least following step when treater executive program:

step S102, carrying out PI operation or PID operation according to the temperature in the vehicle and a first preset temperature to obtain a second target frequency;

The device herein may be a server, a PC, a PAD, a mobile phone, etc.

The present application further provides a computer program product adapted to perform a program of initializing at least the following method steps when executed on a data processing device:

According to still another exemplary embodiment of the present application, there is also provided an air conditioning system including: any one of the above-described parking air conditioners, one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any one of the above-described methods.

The air conditioning system described above, comprising any of the above-described parking air conditioners, one or more processors, memory, and one or more programs including instructions for performing any of the above-described methods. The above-mentioned air conditioning system of this application, through the operating frequency who controls above-mentioned compressor, it is lower to have guaranteed the temperature in the car to and air conditioner flow is great, and it is better to have guaranteed to stay air conditioning system's travelling comfort. Meanwhile, the heat dissipation effect of the heat dissipation structure of the parking air conditioner is better, the temperature rise of a power device of the parking air conditioner is lower, the reliability of the parking air conditioner is better, and the problem that the comfort in the vehicle is poor due to the fact that the reliability problem is solved in the prior art.

In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:

1) the parking air conditioner comprises a shell, an evaporator, a controller assembly and a compressor assembly, wherein the controller assembly comprises a controller body structure and a heat dissipation structure, the controller body structure, the evaporator and the shell form an air return cavity, the heat dissipation structure is located in the air return cavity, and the shell corresponding to the air return cavity is provided with the air return opening. The above-mentioned parking air conditioner of this application through placing above-mentioned heat radiation structure in above-mentioned return air chamber, has guaranteed that above-mentioned heat radiation structure can dispel the heat through return air current in the car, has guaranteed that above-mentioned heat radiation structure's on the above-mentioned controller subassembly temperature rise control is in lower within range, has guaranteed that above-mentioned parking air conditioner's reliability is better, has avoided causing the relatively poor problem of travelling comfort in the car for preventing the reliability problem among the prior art, has guaranteed that the travelling comfort in the car is better. In addition, in the scheme, the heat dissipation structure is only arranged in the return air duct of the evaporator, so that the problem that condensation is easily caused when the whole controller assembly is placed in the return air duct is avoided.

2) The control method of the parking air conditioner comprises the steps of firstly obtaining air flow and temperature in a vehicle, and calculating a first target frequency of compressor operation according to the air flow and the temperature in the vehicle; then according to the temperature in the vehicle and a first preset temperature, performing PI operation or PID operation to obtain a second target frequency; then, determining the minimum target frequency in the first target frequency and the second target frequency; controlling the compressor to operate according to the target frequency, and acquiring the temperature of a power device in real time; and finally, at least controlling the operating frequency of the compressor according to the relationship between the temperature of the power device and the temperature threshold value. According to the method, the running frequency of the compressor is controlled, so that the temperature in the automobile is lower, the air conditioner flow is larger, and the comfort in the automobile is better. Meanwhile, the heat dissipation effect of the heat dissipation structure of the parking air conditioner is better, the temperature rise of a power device of the parking air conditioner is lower, the reliability of the parking air conditioner is better, and the problem that the comfort in the vehicle is poor due to the fact that the reliability problem is solved in the prior art.

3) The control device of the parking air conditioner acquires the air flow and the temperature in the vehicle through the acquisition unit, and calculates a first target frequency of the operation of the compressor according to the air flow and the temperature in the vehicle; performing PI (proportional integral) operation or PID (proportion integration differentiation) operation by the operation unit according to the temperature in the vehicle and a first preset temperature to obtain a second target frequency; determining, by the determining unit, a minimum target frequency of the first target frequency and the second target frequency; controlling the compressor to operate according to the target frequency through the first control unit, and acquiring the temperature of a power device in real time; and controlling at least the operating frequency of the compressor by the second control unit according to the relationship between the temperature of the power device and the temperature threshold value. According to the method, the running frequency of the compressor is controlled, so that the temperature in the automobile is lower, the air conditioner flow is larger, and the comfort in the automobile is better. Meanwhile, the heat dissipation effect of the heat dissipation structure of the parking air conditioner is better, the temperature rise of a power device of the parking air conditioner is lower, the reliability of the parking air conditioner is better, and the problem that the comfort in the vehicle is poor due to the fact that the reliability problem is solved in the prior art.

4) An air conditioning system of the present application, comprising any of the above-described parking air conditioners, one or more processors, memory, and one or more programs including instructions for performing any of the above-described methods. The above-mentioned air conditioning system of this application, through the operating frequency who controls above-mentioned compressor, it is lower to have guaranteed the temperature in the car to and air conditioner flow is great, and it is better to have guaranteed to stay air conditioning system's travelling comfort. Meanwhile, the heat dissipation effect of the heat dissipation structure of the parking air conditioner is better, the temperature rise of a power device of the parking air conditioner is lower, the reliability of the parking air conditioner is better, and the problem that the comfort in the vehicle is poor due to the fact that the reliability problem is solved in the prior art.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A parking air conditioner, comprising:

the shell is provided with a containing cavity and an air return opening;

the evaporator is positioned in the accommodating cavity;

the controller assembly is positioned in the accommodating cavity and positioned on one side of the evaporator, the controller assembly comprises a controller body structure and a heat dissipation structure, the heat dissipation structure is positioned on the surface of the controller body structure, the controller body structure comprises a power device, the heat dissipation structure is used for dissipating heat of the power device, the controller body structure, the evaporator and the shell form a return air cavity, the heat dissipation structure is positioned in the return air cavity, and the shell corresponding to the return air cavity is provided with the return air inlet;

and the compressor assembly is positioned in the accommodating cavity and communicated with the evaporator.

2. Parking air conditioner according to claim 1, characterized in that the controller assembly is arranged obliquely in the receiving cavity.

3. The parking air conditioner of claim 1, wherein the height direction of the heat dissipation structure is perpendicular to the wind direction in the return air cavity.

4. Parking air conditioner according to claim 3, characterized in that said controller assembly comprises:

a case having an opening, the case having a first receiving opening on a surface thereof opposite to the opening;

the box cover is covered on the opening of the box body and forms a control accommodating cavity with the box body;

the mounting plate is provided with a second accommodating port, the box body is arranged on the mounting plate, and the first accommodating port and the second accommodating port are correspondingly arranged;

the mainboard comprises a mainboard body and a heat dissipation structure, wherein the mainboard body further comprises a power device, the heat dissipation structure is in contact with the power device, the mainboard body is located in the control accommodating cavity, and the heat dissipation structure protrudes out of the box body through the first accommodating port and the second accommodating port.

5. The parking air conditioner of claim 1, further comprising:

the throttling assembly is positioned in the accommodating cavity and communicated with the evaporator;

the condensation fan assembly is positioned in the accommodating cavity and communicated with the throttling assembly;

the condenser is positioned in the accommodating cavity and is communicated with the condensing fan assembly and the compressor assembly respectively;

the chassis assembly is positioned in the accommodating cavity and positioned on the other side of the condensing fan assembly;

the evaporator assembly is positioned in the accommodating cavity;

the evaporation fan assembly is positioned in the accommodating cavity and positioned on one side of the evaporator;

the inner machine component is positioned in the accommodating cavity and positioned on the air outlet side of the evaporation fan component, and the air outlet of the inner machine component is the air outlet of the air conditioner.

6. An air conditioning system, comprising: parking air conditioner according to any of claims 1 to 5.