CN112577219A

CN112577219A - Refrigerating unit for vehicle, control method of refrigerating unit and refrigerator car

Info

Publication number: CN112577219A
Application number: CN202011554901.7A
Authority: CN
Inventors: 胡松; 刘旭东; 罗明英; 林海荣; 丁博文
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-03-30

Abstract

The invention discloses a refrigerating unit for a vehicle, a control method of the refrigerating unit and a refrigerator car. Wherein, the method comprises the following steps: monitoring the current wind direction; controlling a first driving device according to the current wind direction, and further controlling a refrigeration outer machine to rotate, so that the air inlet direction of the refrigeration outer machine is consistent with the current wind direction; the first driving device is in driving connection with the refrigerating outer machine and can drive the refrigerating outer machine to rotate on a horizontal plane. The invention provides a set of orientation adjusting structure of a refrigeration outdoor unit and a corresponding control scheme, which can adjust the orientation of the refrigeration outdoor unit according to the difference between the actual external wind field flowing condition and the vehicle running condition, so that the air inlet direction of the refrigeration outdoor unit is consistent with the current wind direction, the external wind field is effectively utilized, and the air inlet amount of the refrigeration outdoor unit is ensured. And the input power of the fan is condensed according to the vehicle speed, so that the aim of saving energy is fulfilled.

Description

Refrigerating unit for vehicle, control method of refrigerating unit and refrigerator car

Technical Field

The invention relates to the technical field of refrigeration, in particular to a refrigerating unit for a vehicle, a control method of the refrigerating unit and a refrigerated vehicle.

Background

In the prior art, the air intake of the condensation side of the refrigerator unit of the refrigerator car changes along with the change of the car speed, but the traditional refrigerator unit of the refrigerator car only arranges a certain inclination angle (generally 6-22 degrees) with the horizontal direction when the condenser is arranged so as to utilize the windward side of the car when the car runs. The method can improve the heat exchange capability of the condenser to a certain extent, so that the unit is energy-saving. However, in practical applications, the external wind field changes and the running conditions of the vehicle are complicated. The orientation of the outdoor unit has a relatively large influence on the air volume. Because the refrigerating outdoor unit is fixed on the top of the refrigerator car, the orientation of the refrigerating outdoor unit relative to the wind direction cannot be completely guaranteed in the running process of the car.

The problem that the air inlet effect of an outer refrigerating machine is affected due to the fact that the outer refrigerating machine of the refrigerator car is fixed in the direction in the prior art is solved.

Disclosure of Invention

The embodiment of the invention provides a refrigerating unit for a vehicle, a control method of the refrigerating unit and a refrigerator car, and aims to solve the problem that the air inlet effect of an outdoor refrigerating unit is affected due to the fact that the outdoor refrigerating unit of the refrigerator car is fixed in orientation in the prior art.

In order to solve the technical problem, the invention provides a control method of a refrigerating unit, wherein the method comprises the following steps: monitoring the current wind direction; controlling a first driving device according to the current wind direction, and further controlling a refrigeration outer machine to rotate, so that the air inlet direction of the refrigeration outer machine is consistent with the current wind direction; the first driving device is in driving connection with the refrigerating outer machine and can drive the refrigerating outer machine to rotate on a horizontal plane.

Further, monitoring the current wind direction includes: collecting wind speed through a wind speed collecting device; the air speed acquisition devices are arranged around the refrigerating outdoor unit; and carrying out statistical analysis on the wind speed of each wind speed acquisition device to determine the current wind direction.

Further, the wind speed of each wind speed acquisition device is subjected to statistical analysis, and the current wind direction is determined, wherein the statistical analysis comprises the following steps: dividing N adjacent wind speed acquisition devices into one group, and calculating the data sum of the wind speeds of the wind speed acquisition devices in each group; wherein N is less than or equal to M, and M is the total number of the wind speed acquisition devices; and determining the position of the group of wind speed acquisition devices with the maximum data sum as the current wind direction.

Further, according to the first drive arrangement of current wind direction control, and then control the outer machine rotation of refrigeration for the air inlet direction of the outer machine of refrigeration is unanimous with current wind direction, includes: determining the rotation angle of a rotating motor according to the current wind direction and the wind inlet direction of the refrigerating external unit; controlling a rotating motor to rotate according to the rotating angle so as to adjust the rotation of a rotating shaft, so that the refrigerating outer machine is driven to rotate, and the air inlet direction of the refrigerating outer machine is consistent with the current wind direction;

the first driving device comprises a rotating bracket assembly, one side of the refrigerating outer machine, which is far away from the air inlet end, is rotatably arranged on the rotating bracket assembly, and the rotating bracket assembly comprises a rotating motor and a rotating shaft.

Further, the method further comprises: monitoring the current speed of the vehicle where the refrigerating external machine is located; and adjusting the rotating speed of a condensing fan of the refrigerating outer machine according to the current vehicle speed.

Further, adjust the rotational speed of the outer machine's of refrigeration condensation fan according to current speed of a motor vehicle, include: if the current speed is less than a first preset value, controlling the condensing fan to keep a rated rotating speed; if the current vehicle speed is less than or equal to a second preset value, reducing the rotating speed of the condensing fan according to a preset proportion; and if the current vehicle speed is larger than a second preset value, closing the condensing fan.

Further, the method further comprises: monitoring the current speed of the vehicle; controlling a second driving device according to the current vehicle speed so as to adjust the inclination angle of the condenser; the condenser is rotatably arranged in the refrigeration outer machine, a heat exchange surface of the condenser and an included angle between air inlet directions of the refrigeration outer machine are the inclined angle, the second driving device is in driving connection with the condenser, and the driving device can drive the condenser to adjust the inclined angle.

Further, controlling the second driving device according to the current vehicle speed, thereby adjusting the inclination angle of the condenser, includes: determining a corresponding inclination angle according to the current vehicle speed; controlling the second driving device so that the inclination of the condenser is adjusted to the determined inclination.

Further, controlling the second driving device so as to adjust the inclination of the condenser to the determined inclination includes: controlling the number of rotation turns of a motor of the second driving device to adjust the height of a slide block assembly of the second driving device; the two installation supporting points in the length direction of the condenser respectively correspond to one second driving device, and the inclination angle of the condenser is adjusted by adjusting the height difference of the sliding block assemblies of the second driving devices at the two installation supporting points.

The present invention also provides a refrigeration unit for a vehicle, comprising: the air inlet direction of the refrigeration outer machine is parallel to the running direction of the vehicle; the first driving device is in driving connection with the refrigerating outer machine and can drive the refrigerating outer machine to rotate on a horizontal plane.

Further, the first driving device includes: the rotary bracket component, the outer machine of refrigeration keeps away from the rotatable setting in one side of air inlet end and is in on the rotary bracket component.

Further, the rotating bracket assembly includes: the rotating shaft is vertically arranged and used for driving the refrigerating outer machine to rotate; the rotating motor is arranged at the bottom of the rotating shaft and used for driving the rotating shaft to rotate; and the fixed support is arranged at the bottom of the rotating shaft and used for ensuring the stability of the rotating support component.

Further, the first driving device further includes:

the base bracket is arranged at the bottom of the refrigerating outer machine;

and the fixing bolt is used for fixing the refrigerating outer machine on the base bracket.

Further, the refrigeration unit further comprises:

the condenser is rotatably arranged in the refrigerating external machine, the air inlet direction of the refrigerating external machine is parallel to the running direction of the vehicle, and the included angle between the heat exchange surface of the condenser and the air inlet direction is an inclined angle;

and the second driving device is in driving connection with the condenser, and the driving device can drive the condenser to adjust the inclination angle.

Furthermore, the condenser at least comprises two mounting fulcrums, the number of the second driving devices is at least two, each second driving device is correspondingly connected to one mounting fulcrum, and each second driving device can drive and adjust the distance between the corresponding mounting fulcrum and the chassis; all the second driving devices adjust the position and the inclination angle of the condenser by adjusting the position of the mounting fulcrum.

Further, the second driving device includes:

a motor mounted on the chassis;

the screw rod is in driving connection with the motor output shaft;

and the sliding block assembly is in threaded connection with the screw rod and is fixedly connected with the corresponding mounting fulcrum.

The invention also provides a refrigerator car, wherein the refrigerator unit for the vehicle is included.

The invention also provides a computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the method as described above.

By applying the technical scheme of the invention, a set of orientation adjusting structure and a corresponding control scheme of the refrigeration outdoor unit are provided, the orientation of the refrigeration outdoor unit can be adjusted by the first driving device according to the difference between the actual external wind field flowing condition and the vehicle running condition, so that the air inlet direction of the refrigeration outdoor unit is consistent with the current wind direction, the external wind field is effectively utilized, and the air inlet amount of the refrigeration outdoor unit is ensured. And the position and the inclination angle of the condenser are adjusted through the second driving device so as to adjust the inclination angle of the condenser and the air inlet direction. The refrigeration unit is communicated with the vehicle and obtains real-time vehicle speed, and when the controller of the refrigeration unit obtains that the vehicle is located at a certain vehicle speed, the condenser is adjusted through the second driving device and controlled to the inclination angle with the optimal air inlet effect. By adjusting the placement angle of the condenser in real time, the air inlet volume of the condensation air duct can be maximized, and the condensation air duct is in the best air inlet effect constantly.

Drawings

FIG. 1 is a schematic structural view of a refrigerated vehicle according to an embodiment of the invention;

FIG. 2 is a schematic diagram of a refrigeration unit for a vehicle according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating a direction of intake wind of the outdoor unit according to the embodiment of the present invention;

fig. 4 is a schematic view illustrating a direction of intake wind of the outdoor unit according to the embodiment of the present invention;

FIG. 5 is a schematic diagram of a refrigeration unit for a vehicle according to one embodiment of the present invention;

fig. 6 is a schematic view of a structure of an outdoor unit of the refrigeration unit for a vehicle of fig. 5;

fig. 7 is a partially enlarged schematic view of the outdoor unit of fig. 6;

FIG. 8 is a flow chart of a method of controlling a refrigeration unit according to an embodiment of the present invention;

fig. 9 is a logic diagram of a control device for a refrigeration unit in accordance with an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the 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 invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.

Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Example 1

Fig. 1 is a schematic structural diagram of a refrigerator car according to an embodiment of the present invention, and as shown in fig. 1, a refrigeration unit of the refrigerator car includes an outdoor refrigeration unit 10 and an indoor refrigeration unit 20. The refrigeration outdoor unit is arranged on the top of the refrigerator car.

According to the characteristics of the refrigerating unit of the refrigerator car, under the conditions of different external wind field conditions and vehicle running modes, the air volume of the condensation wind field is different. Under the common influence of the two factors, the actual condition of the condensation wind field can influence the operation effect of the whole refrigerating unit.

The holes (air inlet ends) of the conventional refrigerating external unit are generally arranged in front of the refrigerating unit, namely in the direction of the head of the refrigerating unit. In order to improve the capacity of the whole refrigerating unit by utilizing the air quantity entering the condensation air duct from the front when the refrigerator car runs. However, in the practical application process, in the case of change of the external wind field condition and different conditions of refrigerator car operation, the forward hole always has the best influence on the air quantity of the unit. According to the simulation and actual test conditions, when the refrigerator car runs, the inlet air from the front of the refrigerating unit accounts for about 80% of the whole condensation air volume. However, due to the instability of the wind direction, the wind direction and the traveling direction of the vehicle head have certain deviation, so that the refrigerating unit of the refrigerator car needs to fully use the air volume of an external wind field in the operation process as much as possible.

In the use process of a common refrigerating unit, the refrigerating unit is fixed on a carriage and cannot move. In the invention, the refrigerating outer machine of the refrigerating unit of the refrigerator car can be rotationally adjusted through a mechanism. The air inlet direction of the refrigerating outer machine can be adjusted according to the control logic used in a matched mode, and finally the air inlet direction of the refrigerating outer machine which is adjusted under different conditions can reach the optimal air inlet amount.

Fig. 2 is a schematic structural view of a refrigerator group for a vehicle according to an embodiment of the present invention, as shown in fig. 2, the refrigerator group comprising: the refrigerator comprises an outdoor unit and a first driving device. The air inlet direction of the refrigerating outer machine is parallel to the running direction of the vehicle; the first driving device is in driving connection with the refrigerating external machine and can drive the refrigerating external machine to rotate on a horizontal plane. The first driving device includes: the rotary bracket component, the outer machine of refrigeration keeps away from the rotatable setting in one side of air inlet end on rotary bracket component. The rotating bracket assembly includes: and the rotating shaft 31 is vertically arranged and is used for driving the refrigerating external machine to rotate. And a rotating motor 32 disposed at the bottom of the rotating shaft 31 for driving the rotating shaft 31 to rotate. The fixed brackets 33 are disposed at the bottom of the rotating shaft 31 for ensuring the stability of the rotating bracket assembly, and in specific implementation, the number of the fixed brackets 33 (i.e., the bracket legs) can be set according to actual requirements, for example, three bracket legs can be provided for pursuing the effect of balance. The first driving device further includes: the refrigerator comprises a base support 34 arranged at the bottom of the refrigerator outer unit, a fixing bolt 35 used for fixing the refrigerator outer unit on the base support 34, a rotating pulley 36 arranged at the bottom of the fixing support 33, and a guide rail 37 used for matching with the sliding track of the rotating pulley 36.

The operating principle of the first driving device is as follows: the controller 38 (may also be referred to as an electric cabinet) determines the control of the wind direction, and transmits a signal determined by the controller 38 to the rotating electric machine 32. The rotating motor 32 can connect the rotating shaft 31 and the base bracket 34. The angle of the rotating shaft 31 can be adjusted through the rotating motor 32, and the rotating shaft 31 drives the refrigeration outdoor unit to rotate, so that the purpose of adjusting the air inlet direction of the refrigeration outdoor unit is achieved.

In order to adjust the air intake direction of the outdoor unit, the specific control logic of the controller 38 is as follows. A plurality of wind speed acquisition devices are arranged around the refrigerating unit. Each wind speed acquisition device can acquire the wind speed of each point. The wind speed data is transmitted back to the controller for analysis. Assuming that 16 wind speed collection devices are provided, every 4 wind speed collection devices can be used as an analysis unit, and the maximum sum of the wind speeds of the adjacent 4 wind speed collection devices is the current wind direction. If the judgment result of the current wind direction is maintained for a preset time (for example, 10s), the controller instructs the rotating motor 32 to work to drive the refrigeration outdoor unit to rotate, so that the central shaft of the refrigeration outdoor unit is aligned to the middle point of the 4 wind speed acquisition devices, and the air inlet direction of the refrigeration outdoor unit is consistent with the current wind direction. The total number M of the wind speed collecting devices and the number N of the groups may be determined according to actual conditions. Since there are four east-west-north-south orientations in the conventional sense, N may be set to M/4. Of course, in order to further refine the azimuth division of the wind direction, N may be set to M/8. It should be further noted that, in order to ensure the accuracy of monitoring the wind direction, when a plurality of wind speed collecting devices are arranged around the refrigerating unit, the wind speed collecting devices can be uniformly arranged around the refrigerating unit, so that each wind speed collecting device is accurately arranged in each direction, and the accuracy of monitoring the wind direction is effectively improved.

Fig. 3 and 4 are schematic diagrams of the direction of the intake air of the outdoor unit according to the embodiment of the present invention, assuming that the angle between the central axis of the vehicle compartment and the central axis of the refrigeration unit is defined as θ, 0< θ <360 °. No matter the vehicle is in a parking state, a low-speed running state or a high-speed running state, the included angle theta can be adjusted according to the wind direction monitored in real time, and the refrigeration outdoor unit is driven by the first driving device to achieve the purpose, so that the air inlet direction of the refrigeration outdoor unit is consistent with the wind direction, and the maximum utilization of the air inlet amount is achieved. In this embodiment, the air inlet of the refrigeration unit is disposed toward the traveling direction of the vehicle. It should be noted that, when the vehicle is traveling at a high speed, the frontal wind of the vehicle may be stronger than the natural wind direction at that time, and if this is the case, the outdoor cooling unit does not need to rotate (spin). If the vehicle is in a parking state or a low-speed running state, the natural wind direction at that time is stronger than the windward wind of the vehicle, and the included angle of the refrigerating outdoor unit can be adaptively adjusted.

After the air inlet direction of the refrigeration outdoor unit is adjusted, the rotating speed of the condensing fan 39 can be adjusted according to the current vehicle speed in order to achieve the energy-saving effect. If the current vehicle speed is less than the first preset value, controlling the condensing fan 39 to keep the rated rotating speed; if the first preset value is less than or equal to the current vehicle speed and less than or equal to the second preset value, reducing the rotating speed of the condensing fan 39 according to a preset proportion; and if the current vehicle speed is larger than the second preset value, closing the condensing fan 39. Thereby realizing the purpose of energy conservation.

Example 2

This embodiment provides the inclination adjustment structure of a set of condenser outside the orientation adjustment structure that provides a set of refrigeration to solve the fixed problem of the air inlet angle of condenser. The refrigeration unit is communicated with the vehicle and obtains real-time vehicle speed, and when the controller of the refrigeration unit obtains that the vehicle is located at a certain vehicle speed, the condenser is adjusted through the first driving device and controlled to the inclination angle with the optimal air inlet effect.

Referring to fig. 5 to 7, according to an embodiment of the present invention, a refrigeration unit for a vehicle is provided, including an outdoor refrigeration unit 10, a condenser 40, a second driving device 50, and an indoor refrigeration unit 70, where an air intake direction of the outdoor refrigeration unit 10 is parallel to a traveling direction of the vehicle. The condenser 40 is rotatably arranged in the outdoor unit 10, and an inclination angle is formed between a heat exchange surface of the condenser 40 and an air inlet direction; the second driving device 50 is in driving connection with the condenser 40, and the second driving device 50 can drive the condenser 40 to adjust the inclination angle.

It is further explained in conjunction with fig. 6 and 7 that the heat exchange surface of the condenser 40 is a heat exchange surface formed by the structure of the condenser itself, and generally refers to the largest area of the outer surface of the condenser 40, or refers to a heat exchange surface formed by the condenser 40 by fitting integrally.

Along with the change of the vehicle speed, the air intake of the windward side of the condenser is different, so that the fixed inclination angle cannot enable the condensation air duct to be in the best air intake effect all the time. Therefore, the refrigerator set of the invention adjusts the position and the inclination angle of the condenser through the second driving device so as to adjust the inclination angle of the condenser and the air inlet direction. The refrigeration unit is communicated with the vehicle and obtains the real-time vehicle speed, and when the controller of the refrigeration unit obtains that the vehicle is located at a certain vehicle speed (for example, 60km/h), the condenser is adjusted through the second driving device and is controlled to the inclination angle (for example, 11 degrees) with the optimal air intake effect. By adjusting the placement angle of the condenser in real time, the air inlet volume of the condensation air duct can be maximized, and the condensation air duct is in the best air inlet effect constantly.

Further, the refrigeration outdoor unit 10 includes an outer casing 11, a condensation air duct 12 is formed inside the outer casing 11, and the condenser 40 is disposed in the condensation air duct 12; an air inlet 13 and an air outlet 14 are arranged on the outer shell 11, and both the air inlet 13 and the air outlet 14 are communicated with the condensation air duct 12. In this embodiment, the condensation duct 12 is enclosed by canvas inside the outer casing 11, but may be enclosed by structures made of other materials in other embodiments.

Referring to fig. 6, the outer housing 11 includes a top plate 15 and a chassis 16, and the chassis 16 is a bottom base structure of the outer housing 11 and is mainly used for mounting on the roof of the vehicle. An air outlet 14 is arranged on the top plate 15, and a condensing fan 60 is arranged at the air outlet 14; at least part of the condensation air duct 12 is formed between the top plate 15 and the bottom plate 16, and the condenser 40 is located between the top plate 15 and the bottom plate 16. Through setting up air outlet 14 on roof 15, the direct discharge from the roof of the amount of wind of leading-in to outer machine 10 of refrigeration in the vehicle driving process can make the amount of wind air current more unobstructed like this, and heat exchange efficiency is higher.

In order to make the air intake direction of the structure-fitted cooling outdoor unit parallel to the traveling direction of the vehicle, in the present embodiment, the air intake 13 is disposed toward the traveling direction of the vehicle, and fig. 6 and 7 show the position of the air intake 13 and the air intake direction.

The air inlet 13 is located at the bottom of the outer casing 11, and the air outlet 14 is located at the top of the outer casing 11. In the running process of the vehicle, the air quantity is introduced from the air inlet 13 at the bottom, passes through the condenser 40 at the middle part and is discharged from the top plate, so that the air flow of the air quantity is smoother, and the heat exchange efficiency is higher.

Referring to fig. 7, the distance between the structural center point of the condenser 40 and the condensing fan 60 is H1, and the distance between the structural center point of the condenser 40 and the chassis 16 is H2; the second drive device 50 may drive the condenser 40 to move to adjust H1 and H2. The structural center point of condenser 40 may also be the center point of the heat exchange fitting volume of condenser 40, or the center point of the heat exchange surface of condenser 40.

After the desired inclination of the condenser is adjusted, the distance H1 between the condenser 40 and the condensing fan 60 and the distance H2 between the condenser 40 and the chassis 16 need to be calculated again. If H1 is less than H2, the height H1 is raised by the second drive means such that H1 is eventually greater than or equal to H2. The control principle is that H1 is always kept to be larger than H2 or H1 is equal to H2, two distance parameters of H1 and H2 are set and fed back to a specific structure, the structure can ensure that the condensation air channel is in an optimal state all the time, when H1 is equal to H2, the air resistance of the condensation air channel is minimum, the windward side and the air inlet heat exchange can be utilized to the maximum degree, and the air suction efficiency of the condensation fan is higher.

Further preferably, the condenser 40 of the present embodiment has a plate-shaped structure as a whole, and the structural center point of the condenser 40 is located at the center of the plate-shaped structure. The side surfaces of the plate-like structure of the condenser 40 are parallel to the heat exchange surfaces of the condenser 40. Since the physical shape of the condenser 40 is relatively fixed, a structural center point and a heat exchange surface can be defined. The condenser with the plate-shaped structure is more beneficial to adjusting the preset angle and the windward side, and the structure can improve the heat exchange efficiency.

Preferably, the second drive means 50 is mounted on the chassis 16 and the condenser 40 is connected to the second drive means 50. That is, the condenser 40 is directly mounted on the second driving device 50, and the second driving device 50 can directly rotate or move the condenser to adjust the inclination angle and height position (height of the condenser from the base pan) of the condenser.

Referring to fig. 6 and 7, the condenser 40 includes at least two mounting fulcrums 21, and at least two second driving devices 50, each second driving device 50 is correspondingly connected to one of the mounting fulcrums 21, and each second driving device 50 can drive and adjust a distance between the corresponding mounting fulcrum 21 and the chassis 16. All the second driving means 50 adjust the position and the inclination angle of the condenser 40 by adjusting the position of the mounting fulcrum 21. Each second driving device 50 can adjust the height of the mounting fulcrum 21, so as to directly or indirectly adjust the position of the condenser 40, generally speaking, at least two mounting fulcrums 21 can be adjusted to the inclination angle of the condenser 40, and more mounting fulcrums can make the adjustment more fine. If the height relation between H1 and H2 needs to be adjusted, the second driving device 50 can directly move the position of the mounting fulcrum 21 to meet the adjustment requirement.

Further, at least two mounting fulcrums 21 are provided on both ends of the condenser 40 in the length direction or the width direction, respectively. The arrangement at the above-mentioned positions can save the number of the mounting fulcrums 21 to the maximum extent, and at the same time, can control the inclination angle of the heat exchanger to the maximum efficiency, and the specific positions can be seen in fig. 6 and fig. 7, in this embodiment, although there are only two mounting fulcrums 21 (the positions of the two mounting fulcrums 21 can also be understood as the front end and the rear end in a certain direction of the condenser), the adjustment efficiency is also the highest.

It should be noted that the length of the condenser refers to the length of the longest portion of the condenser, and the condenser is configured to have a length, a width, and a thickness, and the length of the condenser is greater than the width and the length is greater than the thickness. If the condenser has a rectangular plate-like structure as shown in fig. 6, the length of the condenser is the length of the long side of the rectangle, i.e. the length of the condenser from left to right in fig. 6.

The two installation supporting points 21 are introduced, that is, two second driving devices 50 are correspondingly provided, each second driving device 50 comprises a motor 51, a screw rod 52 and a sliding block assembly 53, the motor 51 is installed on the chassis 16, the screw rod 52 is in driving connection with an output shaft of the motor 51, the sliding block assembly 53 is in threaded connection with the screw rod 52, and the sliding block assembly 53 is fixedly connected with the corresponding installation supporting point 21. As can be seen in fig. 3, by controlling the number of rotations of the two motors 51, the height of the slider assemblies 53 can be affected, and if the heights of the two slider assemblies 53 are different, the inclination angle of the condenser can be affected.

The screw rod 52 is driven to rotate by controlling the rotation of the motor 51 (stepping motor), and the up-and-down movement of the sliding block assembly 53 can be realized under the rotation of the screw rod 52. Because the front and back both ends of condenser are connected with two sliding block set 53 respectively, reciprocate the in-process at sliding block set 53, adjust the angle alpha of presetting of condenser, the second drive arrangement 50 of this embodiment is two, and two second drive arrangement 50 can the independent control, and then distinguish two sliding block set 53's position, under two sliding block set 53's cooperation, accomplish the adjustment of placing the position to the condenser. By adjusting the height of the sliding block component 53, the placing inclination angle alpha of the condenser is more than or equal to 0 degree and less than or equal to 22 degrees, and the distance between the condenser and the chassis is more than or equal to H2 and less than or equal to H1.

The embodiment also provides a refrigerator car, which comprises the refrigerating unit for the vehicle introduced above. The refrigerating outdoor unit is installed at the top position of the refrigerator car. The refrigerating unit can be applied to a refrigerator car, can automatically adjust the air inlet direction of the refrigerating unit according to the current wind direction, can also automatically adjust the placement inclination angle of the condenser according to the car speed, can realize the maximization of the air inlet amount, saves more energy and reduces the cost of the refrigerator car. The rotating speed of the condensing fan can be adjusted according to the vehicle speed, and the purpose of energy conservation is achieved.

Example 3

Fig. 8 is a flowchart of a control method of a refrigeration unit according to an embodiment of the present invention, as shown in fig. 8, the flowchart includes the steps of:

step S801, monitoring the current wind direction;

step S802, controlling a first driving device according to the current wind direction, and further controlling the refrigeration outdoor unit to rotate, so that the air inlet direction of the refrigeration outdoor unit is consistent with the current wind direction; the first driving device is in driving connection with the refrigeration outdoor unit and can drive the refrigeration outdoor unit to rotate on a horizontal plane.

In the embodiment, when the current wind direction is monitored, the wind speed can be collected through the wind speed collecting device; wherein, a plurality of wind speed collecting devices are arranged around the refrigerating outdoor unit; and carrying out statistical analysis on the wind speed of each wind speed acquisition device to determine the current wind direction. Specifically, N adjacent wind speed collection devices may be divided into one group, and the data sum of the wind speeds of the wind speed collection devices of each group is calculated; wherein N is less than or equal to M, and M is the total number of the wind speed acquisition devices; and determining the position of the group of wind speed acquisition devices with the maximum data sum as the current wind direction. When grouping is performed, since there are four directions of east-west-south-north in the conventional sense, N may be set to M/4. Of course, in order to further refine the azimuth division of the wind direction, N may be set to M/8. Therefore, the current wind direction can be monitored more accurately.

Then, determining the rotation angle of the rotating motor according to the current wind direction and the wind inlet direction of the refrigerating external machine; controlling the rotating motor to rotate according to the rotating angle so as to adjust the rotation of the rotating shaft, so that the refrigerating outer machine is driven to rotate, and the air inlet direction of the refrigerating outer machine is consistent with the current wind direction; wherein, first drive arrangement includes rotatory bracket component, and the outer rotatable setting in one side of keeping away from the air inlet end of refrigeration is on rotatory bracket component, and rotatory bracket component includes rotating electrical machines and rotation axis. Based on the method, the orientation of the refrigeration outdoor unit can be adjusted according to the difference between the actual external wind field flowing condition and the vehicle running condition, so that the air inlet direction of the refrigeration outdoor unit is consistent with the current wind direction, the external wind field is effectively utilized, and the air inlet amount of the refrigeration outdoor unit is ensured.

In order to ensure that the air intake of the refrigerating unit can meet the air quantity required by the working condition, the present embodiment can monitor the current vehicle speed of the vehicle where the refrigerating outer unit is located while adjusting the orientation of the refrigerating outer unit according to the current wind direction, and adjust the rotating speed of the condensing fan of the refrigerating outer unit according to the current vehicle speed. Specifically, if the current vehicle speed is less than a first preset value, controlling the condensing fan to keep a rated rotating speed; if the first preset value is smaller than or equal to the current vehicle speed and smaller than or equal to the second preset value, reducing the rotating speed of the condensing fan according to a preset proportion; and if the current vehicle speed is larger than a second preset value, closing the condensing fan. The first preset value is less than the second preset value, and in a specific application, the first preset value can be set to be 30km/h, and the second preset value can be set to be 60 km/h.

The present embodiment can also monitor the current speed of the vehicle in order to further guarantee the intake when adjusting the orientation of the outer machine of refrigeration according to the current wind direction. When the vehicle speed control method is applied specifically, the current vehicle speed of the vehicle can be obtained through communication with the vehicle; then, controlling a second driving device according to the current vehicle speed so as to adjust the inclination angle of the condenser; the condenser is rotatably arranged in the refrigerating external machine, an included angle between a heat exchange surface (particularly one end of the condenser close to the air inlet) of the condenser and the air inlet direction of the refrigerating external machine is the inclined angle, the second driving device is in driving connection with the condenser, and the second driving device can drive the condenser to adjust the inclined angle.

The position and the inclination angle of the condenser are adjusted through the second driving device, so that the inclination angle of the condenser and the air inlet direction is adjusted. The refrigeration unit is communicated with the vehicle and obtains real-time vehicle speed, and when the controller of the refrigeration unit obtains that the vehicle is located at a certain vehicle speed, the condenser is adjusted through the second driving device and controlled to the inclination angle with the optimal air inlet effect. By adjusting the placement angle of the condenser in real time, the air inlet volume of the condensation air duct can be maximized, and the condensation air duct is in the best air inlet effect constantly.

In specific application, after the current speed of a vehicle is monitored, the corresponding inclination angle is determined according to the current speed. In this embodiment, a calculation formula of the vehicle speed and the inclination angle is set. In the case where the vehicle speed V is less than a preset vehicle speed threshold value (e.g., 60km/h), the inclination angle α is V/h, h is a preset constant, and may be set to 3, for example, and in the case where the vehicle speed V ≧ the preset vehicle speed threshold value, the inclination angle is set to a preset maximum value.

After the inclination corresponding to the current vehicle speed is determined, the second driving device is controlled so that the inclination of the condenser is adjusted to the determined inclination. Specifically, the number of rotation turns of a motor of the second driving device is controlled to adjust the height of a slide block assembly of the second driving device; the two installation supporting points of the condenser respectively correspond to the second driving device, and the inclination angle of the condenser is influenced by the height difference of the sliding block assemblies of the second driving devices at the two installation supporting points. Referring to fig. 7, two motors 51 drive the height change of two slider assemblies 53, and the height difference of the two slider assemblies 53 affects the inclination angle of the condenser.

After controlling the second driving device according to the current vehicle speed so as to adjust the inclination angle of the condenser, the distance H1 between the structural center point of the condenser and the condensing fan and the distance H2 between the structural center point of the condenser and the chassis can be determined; and if the H1 is not equal to the H2, controlling the motor of the second driving device to rotate until the H1 is equal to the H2. Referring to fig. 7, the distance between H1 and H2 is adjusted by controlling the rotation of the two motors 51 so as to be consistent. When H1 equals H2, the windage of condensation wind channel is minimum, and can utilize windward side and the heat transfer of air inlet by the at utmost, and the condensation fan induced draft efficiency is higher.

The present embodiment also provides a preferable embodiment that after the second driving means is controlled according to the current vehicle speed to adjust the inclination angle of the condenser, the distance H1 between the structural center point of the condenser and the condensing fan and the distance H2 between the structural center point of the condenser and the chassis can be determined; and judging whether H2 is less than or equal to H1, if not, controlling the motor of the second driving device to rotate until H2 is less than or equal to H1. Thereby can reduce the windage in condensation wind channel, improve condensation fan's the efficiency of induced drafting.

In order to ensure that the condensation air quantity can meet the air quantity required by the working condition, the rotating speed of the condensation fan can be adjusted according to the current vehicle speed while the inclination angle of the condenser is adjusted according to the current vehicle speed. Specifically, if the current vehicle speed is less than a first preset value, controlling the condensing fan to keep a rated rotating speed; if the first preset value is smaller than or equal to the current vehicle speed and smaller than or equal to the second preset value, reducing the rotating speed of the condensing fan according to a preset proportion; and if the current vehicle speed is larger than a second preset value, closing the condensing fan. The first preset value is less than the second preset value, and in a specific application, the first preset value can be set to be 30km/h, and the second preset value can be set to be 60 km/h.

The refrigeration unit described in the above embodiment may further include a controller to implement the above control method. The controller is electrically connected with the first driving device and the second driving device and is used for controlling the first driving device according to the vehicle speed. Fig. 9 is a logic diagram of a control device of a refrigeration unit according to an embodiment of the present invention, and as shown in fig. 9, on one hand, a controller of the refrigeration unit determines a current wind direction according to wind speed data collected by a wind volume collecting device, and then controls a first driving device to drive an external refrigeration unit to rotate, so as to adjust an included angle θ of the external refrigeration unit.

On the other hand, the controller of the refrigerating unit communicates with a speedometer of the vehicle and obtains the real-time vehicle speed, and the inclination angles alpha of the condensers which are respectively corresponding to the vehicle speed V from 0km/h to 120km/h are assumed to be from 0 degree to 22 degrees. When the controller of the refrigerating unit of the refrigerated vehicle detects that the vehicle is at a certain vehicle speed (for example 60km/h) at the time, the control logic determines that the inclination angle alpha of the condenser needs to be controlled at 11 degrees at the time. Further, the controller raises and lowers the heights of the two sliding block assemblies by controlling the number of rotation turns of the two motors (the stepping motor 1 and the stepping motor 2) so that the inclination angle alpha of the condenser reaches 11 degrees. Furthermore, the controller can adjust the height relationship between H1 and H2 to ensure that the condensation duct is in an optimal state all the time. Specifically, if H2 is less than H1, then both motors are controlled to rotate simultaneously, raising height H2 so that H2 is ultimately equal to H1. If H2 is greater than H1, the two motors are controlled to rotate simultaneously, and the height H2 is reduced, so that H2 is equal to H1 finally. Therefore, the condensation air channel can be ensured to be in an optimal state (the windward side or the condensation fan is utilized to absorb air to the maximum extent).

On the other hand, the controller is electrically connected with the condensation fan and used for adjusting the rotating speed of the condensation fan according to the vehicle speed. When the vehicle speed V is less than 30km/h, the controller controls the condensing fan to keep the rated rotating speed. And if the vehicle speed is more than or equal to 30km/h and less than or equal to 60km/h, reducing the rotating speed of the condensing fan according to a preset proportion, for example, if the current vehicle speed is more than or equal to 45km/h, reducing the fan input by 50%. If the vehicle speed V is more than 60km/h, the condensing fan is completely closed, and the air quantity required by heat exchange of the condenser is provided by the windward side of the vehicle. Therefore, the condensing air quantity can meet the air quantity required by the limit working condition at any moment, and when the vehicle speed is more than 30km/h, the reduced fan power can enable the unit to achieve the energy-saving effect.

Example 4

The embodiment of the present invention provides software for implementing the technical solutions described in the above embodiments and preferred embodiments.

Embodiments of the present invention provide a non-volatile computer storage medium, where the computer storage medium stores computer-executable instructions, and the computer-executable instructions may execute a method for controlling a refrigeration unit in any of the above method embodiments.

The storage medium stores the software, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.

The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method of controlling a refrigeration unit, the method comprising:

monitoring the current wind direction;

controlling a first driving device according to the current wind direction, and further controlling a refrigeration outer machine to rotate, so that the air inlet direction of the refrigeration outer machine is consistent with the current wind direction;

the first driving device is in driving connection with the refrigerating outer machine and can drive the refrigerating outer machine to rotate on a horizontal plane.

2. The method of claim 1, wherein monitoring a current wind direction comprises:

collecting wind speed through a wind speed collecting device; the air speed acquisition devices are arranged around the refrigerating outdoor unit;

and carrying out statistical analysis on the wind speed of each wind speed acquisition device to determine the current wind direction.

3. The method of claim 2, wherein statistically analyzing the wind speed of each wind speed collection device to determine the current wind direction comprises:

dividing N adjacent wind speed acquisition devices into one group, and calculating the data sum of the wind speeds of the wind speed acquisition devices in each group; wherein N is less than or equal to M, and M is the total number of the wind speed acquisition devices;

and determining the position of the group of wind speed acquisition devices with the maximum data sum as the current wind direction.

4. The method of claim 1, wherein controlling the first driving device according to the current wind direction, and further controlling the outdoor cooling unit to rotate such that the wind direction of the outdoor cooling unit is consistent with the current wind direction comprises:

determining the rotation angle of a rotating motor according to the current wind direction and the wind inlet direction of the refrigerating external unit;

controlling a rotating motor to rotate according to the rotating angle so as to adjust the rotation of a rotating shaft, so that the refrigerating outer machine is driven to rotate, and the air inlet direction of the refrigerating outer machine is consistent with the current wind direction;

5. The method according to any one of claims 1 to 4, further comprising:

monitoring the current speed of the vehicle where the refrigerating external machine is located;

and adjusting the rotating speed of a condensing fan of the refrigerating outer machine according to the current vehicle speed.

6. The method of claim 5, wherein adjusting the speed of a condensing fan of the outdoor refrigeration unit according to the current vehicle speed comprises:

if the current speed is less than a first preset value, controlling the condensing fan to keep a rated rotating speed;

if the current vehicle speed is less than or equal to a second preset value, reducing the rotating speed of the condensing fan according to a preset proportion;

and if the current vehicle speed is larger than a second preset value, closing the condensing fan.

7. The method according to any one of claims 1 to 4, further comprising:

monitoring the current speed of the vehicle;

controlling a second driving device according to the current vehicle speed so as to adjust the inclination angle of the condenser;

the condenser is rotatably arranged in the refrigeration outer machine, a heat exchange surface of the condenser and an included angle between air inlet directions of the refrigeration outer machine are the inclined angle, the second driving device is in driving connection with the condenser, and the driving device can drive the condenser to adjust the inclined angle.

8. The method of claim 7, wherein controlling the second drive device to adjust the inclination of the condenser based on the current vehicle speed comprises:

determining a corresponding inclination angle according to the current vehicle speed;

controlling the second driving device so that the inclination of the condenser is adjusted to the determined inclination.

9. The method of claim 8, wherein controlling the second drive device to adjust the inclination of the condenser to the determined inclination comprises:

controlling the number of rotation turns of a motor of the second driving device to adjust the height of a slide block assembly of the second driving device; the two installation supporting points in the length direction of the condenser respectively correspond to one second driving device, and the inclination angle of the condenser is adjusted by adjusting the height difference of the sliding block assemblies of the second driving devices at the two installation supporting points.

10. A refrigeration unit for a vehicle, comprising:

the air inlet direction of the refrigeration outer machine is parallel to the running direction of the vehicle;

11. The refrigeration unit as set forth in claim 10 wherein the first drive includes:

the rotary bracket component, the outer machine of refrigeration keeps away from the rotatable setting in one side of air inlet end and is in on the rotary bracket component.

12. The refrigeration unit as set forth in claim 11 wherein said rotary bracket assembly includes:

the rotating shaft is vertically arranged and used for driving the refrigerating outer machine to rotate;

the rotating motor is arranged at the bottom of the rotating shaft and used for driving the rotating shaft to rotate;

and the fixed support is arranged at the bottom of the rotating shaft and used for ensuring the stability of the rotating support component.

13. The refrigeration unit as set forth in claim 11 wherein the first drive further includes:

the base bracket is arranged at the bottom of the refrigerating outer machine;

14. The refrigeration unit as set forth in claim 10 further comprising:

15. The refrigeration unit as set forth in claim 14,

the condenser at least comprises two mounting supporting points, at least two second driving devices are arranged on the condenser, each second driving device is correspondingly connected to one mounting supporting point, and each second driving device can drive and adjust the distance between the corresponding mounting supporting point and the chassis;

all the second driving devices adjust the position and the inclination angle of the condenser by adjusting the position of the mounting fulcrum.

16. The refrigeration unit as set forth in claim 15 wherein the second drive includes:

a motor mounted on the chassis;

the screw rod is in driving connection with the motor output shaft;

17. A refrigerator car characterized by comprising the refrigeration unit for a vehicle of any one of claims 10 to 16.

18. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 9.