Air conveying system for refrigerator car

Abstract

The invention relates to the technical field of refrigerator cars, and discloses an air conveying system for a refrigerator car, which comprises a compartment, a condensing unit is fixed on the front side of the compartment, an evaporating unit is fixed on the front side in the compartment, the condensing unit is connected with the evaporating unit, and a front air conveying pipe and a rear air conveying pipe are respectively arranged in the compartment close to the front side and the rear side. And a plurality of branch air conveying pipes are communicated and fixed between the front air conveying pipe and the rear air conveying pipe. Cold air flow is output from the air exhaust holes and evenly distributed in the compartment, and the second grid is driven to be staggered or overlapped with the first grid, so that the opening degree of the air exhaust holes is controlled, and the cold air output amount of each air exhaust hole is controlled; and the second grille and the first grille are driven to plug the exhaust holes in a staggered mode, so that all airflow is input to the rear air conveying pipe, a cold air curtain is formed on the rear side of the compartment, cold air overflowing in the compartment is effectively reduced, and the interior of the compartment is kept at the low temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerated trucks, and in particular to an air supply system for refrigerated trucks. Background Art

[0002] In the cold chain transportation of food and medicine, heat preservation and moisture retention is the most basic requirement for transportation vehicles, and it is also a common problem to be solved. In the current food and medicine transportation process, mechanical refrigerated trucks have been widely used. The air supply system inside the refrigerated truck can help the cold air to be more evenly input into the interior of the car, ensuring the uniformity of the refrigeration inside the car.

[0003] An existing refrigerated truck compartment (Announcement No.: CN210680947U) has at least the following disadvantages: when the cargo inside the compartment needs to be loaded and unloaded, the compartment door is opened, so that the compartment air supply system can quickly output cold air from the door to the outside, resulting in rapid interaction between the external hot air and the interior of the compartment, thereby causing the air inside the compartment to drop rapidly, which not only increases the energy consumption when subsequently restoring the temperature inside the compartment, but may also cause the cargo to deteriorate. For this reason, the present invention is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an air supply system for a refrigerated vehicle.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A refrigerated vehicle air supply system includes a compartment, a condensing unit is fixed on the front side of the compartment, an evaporating unit is fixed on the front side of the interior of the compartment, the condensing unit is connected to the evaporating unit, a front air supply duct and a rear air supply duct are respectively arranged near the front and rear sides of the interior of the compartment, a plurality of branch air supply ducts are connected and fixed between the front air supply duct and the rear air supply duct, and an air outlet end of the evaporating unit is connected and fixed to the front side of the front air supply duct.

[0007] As a further solution of the present invention, a plurality of exhaust holes are provided on the bottom surface of the branch air duct, a first grille is fixed inside the exhaust hole, a second grille is arranged on the bottom surface of the first grille, a connecting rod is fixed between two adjacent front and rear second grilles among the plurality of second grilles, and a connecting plate is fixed between two adjacent left and right second grilles among the plurality of second grilles.

[0008] As a further solution of the present invention, two electric push rods are fixed to the rear side of the front air duct, and one end of the telescopic rods of the two electric push rods is respectively fixed to the front sides of the corresponding two connecting plates.

[0009] As a further solution of the present invention, two support rods are fixed between the front air duct and the rear air duct, and support holes are opened on one side of several connecting plates close to the left and right sides of the interior of the car, and the support rods and the internal sliding arrangement of the support holes.

[0010] As a further solution of the present invention, the bottom end of the rear air supply pipe is connected to and fixed with an air collecting tube, and the top opening of the air collecting tube is larger than the bottom opening.

[0011] As a further solution of the present invention, the transverse surface of the air collecting tube is a trapezoid, and the angle between the opening direction of the bottom end of the air collecting tube and the top of the carriage is 15° to 20°.

[0012] As a further solution of the present invention, a plurality of diverter tubes are provided on both sides of the interior of the carriage, the plurality of diverter tubes correspond to the positions of the plurality of exhaust holes, and the opening area of ​​the diverter tubes is half of the opening area of ​​the exhaust holes.

[0013] As a further solution of the present invention, two mounting plates are fixed on both sides of the diverter tube, and bolts are movably inserted into one side of the mounting plate, and the bolts are threadedly connected to the inner wall of the carriage.

[0014] As a further solution of the present invention, a fixed frame is fixed on the rear side of the carriage, and there are two doors rotating inside the fixed frame. A locking rod is provided on one side of the door, and two limit clamps are fixed on one side of the door. The locking rod and the limit clamps are internally movably sleeved, and a clamping block is fixed to the top and bottom ends of the locking rod. Four clamping grooves are provided on one side of the fixed frame, and the clamping block is rotatably clamped with the clamping groove. A locking plate is fixed on the outer wall of the locking rod, and a socket is provided on one side of the locking plate. A locking seat is fixed on one side of the door, and the locking plate and the socket are internally slidably inserted, and a lock hole is provided on the top surface of the locking seat.

[0015] As a further solution of the present invention, a photoelectric sensor is fixed on the right side of the interior of the carriage and close to the rear side, a controller is fixed on the front side of the carriage, and the condensing unit, electric push rod and photoelectric sensor are all electrically connected to the controller.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By adopting an evaporator unit, the cold air flow is connected inside the front air duct, the branch air duct and the rear air duct, and the air flow is output through the exhaust holes and evenly distributed inside the car. By driving the second grille and making it staggered or overlapped with the first grille, the opening of the exhaust holes is controlled, and the cold air output of each exhaust hole is controlled. When transporting or loading goods, the second grille is driven to staggered with the first grille to block the exhaust holes, so that all the air flow is input into the rear air duct, so that a cold air curtain is formed on the rear side of the car, which effectively reduces the overflow of cold air inside the car and keeps the interior of the car at a low temperature.

[0018] The airflow discharged from the exhaust hole is diverted by the diverter tube, so that the general airflow can quickly diffuse in the upper layer of the car, and the other half of the airflow is guided to the lower layer of the car through the diverter tube to diffuse, thereby ensuring a more uniform temperature inside the car.

[0019] By setting an air collecting duct at the bottom end of the rear air duct, the air flow intensity is greater when the cold air is output, and the air flow curtain wall can better prevent the cold air inside the car from overflowing. The angle between the opening direction of the bottom end of the air collecting duct and the top of the car is 15° to 20°, which can ensure that the output airflow is output to the interior of the car, further reducing the overflow of the cold zone and keeping the interior of the car at a low temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of an air supply system for a refrigerated vehicle proposed by the present invention;

[0021] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a compartment of an air supply system for a refrigerated vehicle proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the shunt tube of the air delivery system for a refrigerated vehicle proposed by the present invention;

[0023] Figure 4 for Figure 3 A is an enlarged schematic diagram of the local three-dimensional structure;

[0024] Figure 5 A schematic diagram of the three-dimensional structure of an air distribution pipe of an air distribution system for a refrigerated vehicle proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of a three-dimensional cross-sectional structure of an air distribution pipe of an air distribution system for a refrigerated vehicle proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the first grille and the second grille of an air supply system for a refrigerated vehicle proposed by the present invention.

[0027] In the figure: 1. car compartment; 101. condensing unit; 102. evaporating unit; 2. front air duct; 201. rear air duct; 202. branch air duct; 203. exhaust hole; 204. first grille; 205. second grille; 206. connecting plate; 207. electric push rod; 208. connecting rod; 3. support rod; 301. support hole; 4. air collecting tube; 5. diverter tube; 501. mounting plate; 502. bolt; 6. fixing frame; 601. car door; 602. locking rod; 603. clamping block; 604. clamping groove; 605. limit clamp ring; 606. locking plate; 607. locking seat; 608. jack; 609. lock hole; 7. photoelectric sensor; 701. controller. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1-Figure 4 As shown, an air supply system for a refrigerated vehicle includes a compartment 1, a condensing unit 101 is fixed to the front side of the compartment 1, an evaporating unit 102 is fixed to the front side of the interior of the compartment 1, the condensing unit 101 is connected to the evaporating unit 102, a front air supply duct 2 and a rear air supply duct 201 are respectively arranged near the front and rear sides of the interior of the compartment 1, a plurality of branch air supply ducts 202 are connected and fixed between the front air supply duct 2 and the rear air supply duct 201, and an air outlet end of the evaporating unit 102 is connected and fixed to the front side of the front air supply duct 2.

[0032] like Figure 2-Figure 5As shown, in this embodiment, a plurality of exhaust holes 203 are provided on the bottom surface of the branch air delivery pipe 202, a first grille 204 is fixed inside the exhaust hole 203, a second grille 205 is provided on the bottom surface of the first grille 204, a connecting rod 208 is fixed between two adjacent second grilles 205 in the front and rear of the plurality of second grilles 205, and a connecting plate 206 is fixed between two adjacent second grilles 205 in the left and right of the plurality of second grilles 205, by fixing the connecting rod 208 between the two adjacent second grilles 205 in the front and rear and the connecting plate 206 between the two adjacent second grilles 205 in the left and right, the plurality of second grilles 205 are formed as a whole, so that the connecting plate 206 can drive the second grille 205 to move, so that the second grille 205 cooperates with the first grille 204, so that the second grille 205 and the first grille 204 are misaligned or overlapped, the opening of the exhaust hole 203 is controlled, and the cold air output of each exhaust hole 203 is controlled.

[0033] like Figure 4-Figure 6 As shown, in this embodiment, two electric push rods 207 are fixed to the rear side of the front air duct 2, and one end of the telescopic rods of the two electric push rods 207 are respectively fixed to the front sides of the corresponding two connecting plates 206. By starting the electric push rods 207, the connecting plates 206 can be pushed, thereby controlling the movement of the second grille 205 to adjust the opening of the exhaust hole 203.

[0034] like Figure 4-Figure 7 As shown, in this embodiment, two support rods 3 are fixed between the front air duct 2 and the rear air duct 201, and support holes 301 are provided on one side of several connecting plates 206 on the left and right sides of the interior of the carriage 1. The support rods 3 and the internal sliding arrangement of the support holes 301 can support and limit the connecting plates 206 and the second grille 205 through the support rods 3.

[0035] like Figure 4-Figure 7 As shown, in this embodiment, the bottom end of the rear air duct 201 is connected to and fixed with an air collecting tube 4, and the top opening of the air collecting tube 4 is larger than the bottom opening. By arranging the air collecting tube 4 at the bottom end of the rear air duct 201, since the top opening of the air collecting tube 4 is larger than the bottom opening, the air flow intensity of the cold air flow is greater when it is output, so that the formed air flow curtain wall can better prevent the cold air inside the car 1 from overflowing.

[0036] like Figure 4-Figure 7 As shown, in the present embodiment, the transverse surface of the air collecting tube 4 is a trapezoid, and the angle between the opening direction of the bottom end of the air collecting tube 4 and the top of the carriage 1 is 15° to 20°. By setting the angle between the opening direction of the bottom end of the air collecting tube 4 and the top of the carriage 1 to be 15° to 20°, it can be ensured that the output airflow is output to the interior of the carriage 1, further reducing the overflow of the cold zone, so that the interior of the carriage 1 can maintain a low temperature.

[0037] like Figure 4-Figure 7 As shown, in this embodiment, a plurality of diverter tubes 5 are provided on both sides of the interior of the carriage 1, and the plurality of diverter tubes 5 correspond to the positions of the plurality of exhaust holes 203. The opening area of ​​the diverter tubes 5 is half of the opening area of ​​the exhaust holes 203. The airflow discharged from the exhaust holes 203 is diverted by the diverter tubes 5, so that the general airflow is quickly diffused in the upper layer of the carriage 1, and the other half of the airflow is guided to the lower layer of the carriage 1 through the diverter tubes 5 for diffusion, thereby ensuring that the temperature inside the carriage 1 is more uniform.

[0038] like Figure 5-Figure 7 As shown, in this embodiment, two mounting plates 501 are fixed on the left and right sides of the diverter tube 5, and a bolt 502 is movably inserted on one side of the mounting plate 501, and the bolt 502 is threadedly connected to the inner wall of the carriage 1. The two mounting plates 501 are fixed on both sides of the diverter tube 5, and the mounting plates 501 and the inner wall of the carriage 1 are detachably installed by the bolts 502. When a stronger refrigeration intensity is not required in winter, the diverter tube 5 can be removed, thereby increasing the storage space inside the carriage 1.

[0039] like Figure 5-Figure 7 As shown, in this embodiment, a fixed frame 6 is fixed to the rear side of the carriage 1, and two doors 601 are rotated inside the fixed frame 6. A locking rod 602 is provided on one side of the door 601. Two limit clamps 605 are fixed on one side of the door 601. The locking rod 602 and the limit clamp 605 are internally movably sleeved. A clamping block 603 is fixed to the top and bottom of the locking rod 602. Four clamping grooves 604 are provided on one side of the fixed frame 6. The clamping block 603 is rotatably clamped with the clamping groove 604. The locking rod 602 A locking plate 606 is fixed to the outer wall, a socket 608 is provided on one side of the locking plate 606, a locking seat 607 is fixed on one side of the door 601, the locking plate 606 is slidably inserted into the inner part of the socket 608, a locking hole 609 is provided on the top surface of the locking seat 607, the locking plate 606 is separated from the locking seat 607 by holding the locking plate 606, and the locking rod 602 is rotated, so that the card block 603 can be driven to separate from the card slot 604, and the door 601 can be pulled and opened.

[0040] like Figure 5-Figure 7As shown, in this embodiment, a photoelectric sensor 7 is fixed on the right side of the interior of the compartment 1 and near the rear side, a controller 701 is fixed on the front side of the compartment 1, the condensing unit 101, the electric push rod 207 and the photoelectric sensor 7 are all electrically connected to the controller 701. By setting the photoelectric sensor 7, when the door 601 is opened, the photoelectric sensor 7 receives sunlight or light from the outer wall for at least one minute, the photoelectric sensor 7 transmits an electrical signal to the controller 701, so that the controller 701 controls the electric push rod 207 to block the exhaust hole 203, so that a cold air curtain is automatically formed on the rear side of the interior of the compartment 1, thereby reducing the overflow of cold air inside the compartment 1.

[0041] From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: in use, the connecting plate 206 can be pushed by starting the electric push rod 207, and a connecting rod 208 is fixed between the two adjacent second grilles 205 in the front and rear, and a connecting plate 206 is fixed between the two adjacent second grilles 205 in the left and right, so that a plurality of second grilles 205 are integrally formed into a whole, so that driving the connecting plate 206 can drive the second grilles 205 to move, so that the second grilles 205 cooperate with the first grilles 204, so that the second grilles 205 and the first grilles 204 are misaligned or overlapped, and the opening of the exhaust hole 203 is controlled. The degree of cold air output of each exhaust hole 203 is controlled. The connecting plate 206 and the second grille 205 can be supported and limited by the support rod 3. When carrying or loading goods, the second grille 205 and the first grille 204 are driven to alternately block the exhaust holes 203, so that all the airflow is input to the rear air duct 201. By setting a gathering tube 4 at the bottom end of the rear air duct 201, since the top opening of the gathering tube 4 is larger than the bottom opening, the airflow intensity of the cold air flow is greater when it is output, so that the formed airflow curtain wall can better prevent the cold air inside the car 1 from overflowing. By setting the angle between the bottom opening direction of the gathering tube 4 and the top of the car 1 The angle of the airflow outputted from the exhaust hole 203 is 15° to 20°, which can ensure that the output airflow is outputted to the interior of the compartment 1, further reducing the overflow of the cold zone, so that the interior of the compartment 1 is kept at a low temperature. The airflow discharged from the exhaust hole 203 is diverted by the diverter tube 5, so that the general airflow is quickly diffused in the upper layer of the compartment 1, and the other half of the airflow is guided to the lower layer of the compartment 1 through the diverter tube 5 to diffuse, thereby ensuring that the temperature inside the compartment 1 is more uniform. Two mounting plates 501 are fixed on both sides of the diverter tube 5, and the mounting plates 501 and the inner wall of the compartment 1 are detachably mounted by bolts 502. When a strong refrigeration intensity is not required in winter, the diverter tube 5 can be removed to increase the temperature of the compartment. 1, by holding the locking plate 606, the locking plate 606 is separated from the locking seat 607, and the locking rod 602 is rotated, so that the clamping block 603 can be driven to separate from the clamping slot 604, and then the car door 601 can be pulled and opened. By setting the photoelectric sensor 7, when the car door 601 is opened, the photoelectric sensor 7 receives the sunlight or light of the outer wall for at least one minute, and the photoelectric sensor 7 transmits an electrical signal to the controller 701, so that the controller 701 controls the electric push rod 207 to block the exhaust hole 203, so that the rear side of the interior of the car 1 automatically forms a cold air curtain, thereby reducing the overflow of cold air in the car 1.

[0042] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An air supply system for a refrigerated vehicle, comprising a vehicle compartment (1), characterized in that: A condensing unit (101) is fixed on the front side of the carriage (1), an evaporating unit (102) is fixed on the front side of the interior of the carriage (1), the condensing unit (101) and the evaporating unit (102) are connected, a front air duct (2) and a rear air duct (201) are respectively arranged near the front and rear sides of the interior of the carriage (1), a plurality of branch air ducts (202) are connected and fixed between the front air duct (2) and the rear air duct (201), and an air outlet end of the evaporating unit (102) is connected and fixed to the front side of the front air duct (2).

2. The air supply system for a refrigerated vehicle according to claim 1, characterized in that: The bottom surface of the branch air delivery pipe (202) is provided with a plurality of exhaust holes (203), a first grille (204) is fixed inside the exhaust hole (203), a second grille (205) is arranged on the bottom surface of the first grille (204), a connecting rod (208) is fixed between two adjacent second grilles (205) in the front and rear of the plurality of second grilles (205), and a connecting plate (206) is fixed between two adjacent second grilles (205) in the left and right of the plurality of second grilles (205).

3. The air supply system for a refrigerated vehicle according to claim 2, characterized in that: Two electric push rods (207) are fixed to the rear side of the front air delivery pipe (2), and one end of the telescopic rods of the two electric push rods (207) is respectively fixed to the front sides of the corresponding two connecting plates (206).

4. The air supply system for a refrigerated vehicle according to claim 3, characterized in that: Two support rods (3) are fixed between the front air duct (2) and the rear air duct (201), and support holes (301) are provided on one side of a plurality of connecting plates (206) close to the left and right sides of the interior of the vehicle compartment (1), and the support rods (3) and the support holes (301) are slidably arranged inside.

5. The air supply system for a refrigerated vehicle according to claim 4, characterized in that: The bottom end of the rear air delivery pipe (201) is connected to and fixed with an air collecting tube (4), and the top opening of the air collecting tube (4) is larger than the bottom opening.

6. The air supply system for a refrigerated vehicle according to claim 5, characterized in that: The transverse surface of the air collecting tube (4) is a trapezoid, and the angle between the opening direction of the bottom end of the air collecting tube (4) and the top of the carriage (1) is 15° to 20°.

7. The air supply system for a refrigerated vehicle according to claim 6, characterized in that: A plurality of diverter tubes (5) are arranged on both left and right sides of the interior of the carriage (1), the plurality of diverter tubes (5) correspond to the positions of the plurality of exhaust holes (203), and the opening area of ​​the diverter tubes (5) is half of the opening area of ​​the exhaust holes (203).

8. The air supply system for a refrigerated vehicle according to claim 7, characterized in that: Two mounting plates (501) are fixed on both the left and right sides of the diverter tube (5), and a bolt (502) is movably inserted into one side of the mounting plate (501), and the bolt (502) is threadedly connected to the inner wall of the carriage (1).

9. The air supply system for a refrigerated vehicle according to claim 8, characterized in that: A fixed frame (6) is fixed on the rear side of the carriage (1), and two doors (601) are rotatably arranged inside the fixed frame (6), a locking rod (602) is arranged on one side of the door (601), and two limit clamping rings (605) are fixed on one side of the door (601), the locking rod (602) and the limit clamping ring (605) are movably sleeved inside, and a clamping block (603) is fixed on the top and bottom of the locking rod (602), and the fixed frame (6) One side of the vehicle door (601) is provided with four card slots (604), the card block (603) is rotatably connected with the card slots (604), a locking plate (606) is fixed to the outer wall of the locking rod (602), one side of the locking plate (606) is provided with a plug hole (608), one side of the vehicle door (601) is fixed with a locking seat (607), the locking plate (606) is slidably inserted into the inside of the plug hole (608), and a locking hole (609) is provided on the top surface of the locking seat (607).

10. The air supply system for a refrigerated vehicle according to claim 9, characterized in that: A photoelectric sensor (7) is fixed on the right side of the interior of the carriage (1) and close to the rear side, a controller (701) is fixed on the front side of the carriage (1), and the condensing unit (101), the electric push rod (207) and the photoelectric sensor (7) are all electrically connected to the controller (701).

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