A vehicle-mounted air conditioner anti-freezing air guide device

Abstract

This utility model discloses a vehicle-mounted air conditioning anti-freezing and defrosting device, relating to the field of vehicle-mounted air conditioning technology for engineering vehicles. It aims to solve the problems of evaporators in engineering vehicle air conditioning systems easily freezing and frosting under low temperature and high humidity conditions, the impact of traditional shutdown defrosting on construction progress, and the high energy consumption and poor adaptability of electric defrosting methods. The device includes a housing, inside which, from rear to front, are arranged a fan, a heating chamber, an evaporation chamber, and an air supply baffle. The heating chamber contains a heating pipe, and the evaporation chamber contains an evaporator and a temperature sensor. The air supply baffle has an air supply chamber, a guide chamber, adjusting blades, and a telescopic cylinder for controlling the blades. The bottom of the housing has a guide chamber and a water collection tray. A control panel electrically connects all components. This utility model can monitor the evaporator temperature in real time, and uses air circulation combined with the heating pipe to achieve defrosting without shutting down the system. It features low energy consumption, adaptive control, an easily removable and cleanable water collection tray, and is suitable for engineering vehicle operating conditions, ensuring operational efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vehicle-mounted air conditioning technology, and in particular to a vehicle-mounted air conditioning anti-freezing and defreezing device. Background Technology

[0002] As core equipment in infrastructure, mining, and other fields, engineering vehicles often need to operate continuously in harsh environments with low temperatures and high humidity. Onboard air conditioning is crucial for ensuring driver comfort and preventing driver fatigue. However, in actual use, the evaporators of existing engineering vehicle air conditioners are prone to freezing and frosting. Specific defects are as follows:

[0003] In low-temperature and high-humidity environments, the surface temperature of the evaporator can easily drop below the dew point. Water vapor in the air condenses into frost on the evaporator fins. If the temperature remains below 0°C, the frost layer will freeze into ice, blocking the gaps between the fins. This will cause a significant decrease in the air conditioning airflow, failure of the cooling and temperature control function, and inability to meet the ambient temperature and humidity requirements of the driver. At the same time, the fan load will increase, and long-term operation may cause motor overload damage, increasing maintenance costs.

[0004] The shortcomings of traditional defrosting methods:

[0005] Downtime for defrosting: This requires suspending the operation of engineering vehicles, which seriously affects the construction progress, especially in continuous operation scenarios such as tunnel construction and emergency rescue, where downtime losses are significant.

[0006] Electric defrosting: requires additional high-power electric heating tubes, which account for a high proportion of the vehicle's total energy consumption, and uneven heating can easily lead to local overheating of the evaporator, shortening the equipment's lifespan;

[0007] Lack of adaptability: Traditional devices do not take into account the bumpy and dusty working conditions of engineering vehicles. Defrosting water dripping can easily damage the vehicle's electrical components, and maintenance is difficult.

[0008] Therefore, this application provides a vehicle air conditioning anti-freezing defrost device to meet the requirements. Utility Model Content

[0009] The purpose of this application is to provide a vehicle air conditioning anti-freezing and defrosting device that can monitor the evaporator temperature in real time, provide early warning of freezing risks, and avoid excessive frost accumulation; utilizes the air conditioning's own air circulation combined with heating pipes to achieve uninterrupted defrosting without affecting the continuous operation of engineering vehicles; collects defrosting water to prevent leakage and damage to vehicle parts, and is suitable for bumpy working conditions; has a simple structure, is easy to maintain, and reduces the cost of later use.

[0010] To achieve the above objectives, this application provides the following technical solution:

[0011] A vehicle air conditioning antifreeze and defreezing device includes a housing, an air inlet on the rear side of the bottom plate of the housing, a dustproof screen at the air inlet, a control panel and an air outlet at the front of the housing, the control panel integrating a display screen and a mode switching button, and a dustproof filter on the inner side of the air outlet for easy disassembly and cleaning.

[0012] The interior of the housing is provided with a fan, a heating chamber, an evaporation chamber and an air supply baffle in sequence from back to front. The air supply baffle is provided with an air supply chamber. The fan, heating chamber, evaporation chamber and air supply chamber are connected to each other in pairs to form a closed-loop air path.

[0013] The heating chamber is equipped with a heating tube, and the evaporation chamber is equipped with an evaporator and a temperature sensor. The temperature sensor is used to detect the temperature of the evaporator in real time. The temperature sensor is attached to the fins in the middle of the evaporator by thermally conductive silicone to detect the evaporator temperature in real time.

[0014] The bottom of the air supply cavity is provided with a guide cavity, and the front of the air supply cavity is hinged with an adjusting blade. There are multiple sets of adjusting blades that are evenly arranged. The adjusting blades can close the front of the air supply cavity. The housing is provided with a telescopic cylinder for controlling the opening and closing angle of the adjusting blades. The bottom adjusting blades can close the top opening of the guide cavity.

[0015] The bottom of the housing is provided with a flow guide chamber, the top opening of the flow guide chamber is connected to the bottom opening of the flow guide cavity, and the air outlet of the flow guide chamber faces the air inlet;

[0016] The control panel is electrically connected to the fan, the heating element, the temperature sensor, and the telescopic cylinder.

[0017] Preferably, the front ends of the adjusting blades are all hinged to the front of the air supply cavity, and the rear ends of the adjusting blades are all hinged to the synchronizing rod to ensure that multiple sets of blades move synchronously and avoid airflow deviation. The bottom of the adjusting blades is provided with symmetrical arc-shaped guides at both ends. The bottom plate of the air supply cavity is provided with slots that are adapted to the arc-shaped guides. The air supply baffle is provided with guide sleeves that are adapted to the arc-shaped guides. The ends of the two sets of arc-shaped guides are connected to a horizontal plate. The telescopic cylinder drives the arc-shaped guides through the horizontal plate.

[0018] Preferably, the fixed end of the telescopic cylinder is hinged to the upper front side of the air supply baffle, and the telescopic end of the telescopic cylinder is hinged to the middle of the horizontal plate to achieve stable blade drive.

[0019] Preferably, the air supply baffle is provided with a baffle plate, which is located at the front end of the air supply cavity, and the size of the baffle plate matches the position of the telescopic cylinder to avoid the airflow directly impacting the telescopic cylinder and causing malfunction.

[0020] Preferably, the bottom of the flow guide chamber is provided with a water collection trough, and a water collection tray is provided below the water collection trough. The bottom of the evaporation chamber is provided with a drain pipe, which penetrates the shell and the bottom end of the drain pipe corresponds to the position of the water collection tray.

[0021] Preferably, the bottom surface of the flow guide chamber is provided with a fastening strip, and there are multiple sets of fastening strips. The outer side of the top opening of the water collection tray is provided with a fastening plate, which is adapted to the fastening strip. The fastening plate and the fastening strip are fixed by bolts, which facilitates the disassembly and cleaning of the water collection tray.

[0022] In summary, the technical effects and advantages of this utility model are as follows:

[0023] 1. Defrosting without stopping the machine, ensuring operational efficiency: Through the hot air circulation defrosting path, the fan maintains a medium to low air volume during the defrosting process, without the need to stop the operation of engineering vehicles, and the defrosting time is significantly shortened compared to traditional shutdown defrosting.

[0024] 2. Low energy consumption design, reducing operating costs: Utilizing the existing air source of the air conditioner, only the heating element is needed for auxiliary heating, which significantly reduces defrosting energy consumption compared to pure electric defrosting, making it suitable for the energy-saving needs of engineering vehicles;

[0025] 3. Adaptive control, reducing manual intervention: Temperature sensors monitor the evaporator temperature in real time, automatically starting and stopping the defrosting mode, eliminating the need for manual operation by the driver, reducing workload, and providing strong adaptability and high reliability.

[0026] 4. Easy to maintain and clean: The water collection tray connected by the fastener strip and plate is quick and efficient to disassemble and clean, and is easy to maintain, making it suitable for dusty working environments. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a front view structural diagram of the present invention;

[0030] Figure 3 This utility model Figure 2 A schematic diagram of the AA cross-sectional structure;

[0031] Figure 4 This is a schematic diagram of the air supply baffle of this utility model.

[0032] In the diagram: 1. Housing; 2. Fan; 3. Heating chamber; 4. Evaporation chamber; 5. Air supply baffle; 6. Flow guide chamber; 7. Water collection tray; 10. Air inlet; 11. Control panel; 12. Air outlet; 30. Heating tube; 40. Evaporator; 41. Temperature sensor; 42. Drain pipe; 50. Air supply chamber; 51. Telescopic cylinder; 52. Flow guide chamber; 53. Adjusting blade; 54. Synchronizing rod; 55. Arc-shaped guide; 56. Guide sleeve; 57. Wind baffle; 60. Fastening strip; 70. Fastening plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example: Reference Figure 1-4 The vehicle air conditioning antifreeze and defreezing device shown includes a housing 1, an air inlet 10 is provided on the rear side of the bottom plate of the housing 1, a dustproof net is provided at the air inlet 10, and a control panel 11 and an air outlet 12 are provided at the front of the housing 1.

[0035] Inside the housing 1, from back to front, there are a fan 2, a heating chamber 3, an evaporation chamber 4 and an air supply baffle 5. The air supply baffle 5 is provided with an air supply cavity 50. The fan 2, heating chamber 3, evaporation chamber 4 and air supply cavity 50 are connected to each other to form a closed-loop air path.

[0036] Heating tube 30 is provided in heating chamber 3, and evaporator 40 and temperature sensor 41 are provided in evaporator chamber 4. Temperature sensor 41 is attached to the fins of evaporator 40 with thermally conductive silicone to detect the temperature of evaporator 40 in real time.

[0037] The bottom of the air supply cavity 50 is provided with a guide cavity 52. ​​The front of the air supply cavity 50 is hinged with an adjusting blade 53. There are three sets of adjusting blades 53, which are evenly arranged. The adjusting blades 53 can close the front of the air supply cavity 50. The housing 1 is provided with a telescopic cylinder 51 for controlling the opening and closing angle of the adjusting blades 53. The bottom adjusting blades 53 can close the top opening of the guide cavity 52, thereby changing the air path and realizing the switching between normal operation of the air conditioner and the defrosting function.

[0038] The bottom of the housing 1 is provided with a flow guide chamber 6, the top opening of the flow guide chamber 6 is connected to the bottom opening of the flow guide cavity 52, and the air outlet of the flow guide chamber 6 faces the air inlet 10.

[0039] The control panel 11 is electrically connected to the fan 2, heating element 30, temperature sensor 41, and telescopic cylinder 51.

[0040] As one implementation method in this embodiment, the opening and closing of the adjusting blade 53 is driven by the telescopic cylinder 51, such as... Figure 3 , Figure 4 As shown, the front ends of the adjusting blades 53 are all hinged to the front of the air supply cavity 50, and the rear ends of the adjusting blades 53 are all hinged to the synchronizing rod 54. The left and right ends of the bottom adjusting blades 53 are symmetrically provided with arc-shaped guides 55. The bottom plate of the air supply cavity 50 is provided with a slot that matches the arc-shaped guides 55. The air supply baffle 5 is provided with a guide sleeve 56 that matches the arc-shaped guides 55. The ends of the two sets of arc-shaped guides 55 are connected to a horizontal plate. The telescopic cylinder 51 drives the arc-shaped guides 55 through the horizontal plate.

[0041] As one implementation method in this embodiment, to ensure the synchronous opening and closing of the adjusting blades 53, such as Figure 4 As shown, the fixed end of the telescopic cylinder 51 is hinged to the upper front side of the air supply baffle 5, and the telescopic end of the telescopic cylinder 51 is hinged to the middle of the horizontal plate.

[0042] As one implementation method in this embodiment, to protect the telescopic cylinder 51 and extend its service life, such as... Figure 3 , Figure 4 As shown, the air supply baffle 5 is provided with a baffle plate 57, which is located at the front end of the air supply cavity 50, and the size and position of the baffle plate 57 are matched with those of the telescopic cylinder 51.

[0043] As one implementation method in this embodiment, to facilitate draining the thawed water from the evaporation chamber 4, such as... Figure 3 As shown, the bottom of the flow guide chamber 6 is provided with a water collection tank, and the bottom of the water collection tank is provided with a water collection plate 7. The bottom of the evaporation chamber 4 is provided with a drain pipe 42, which penetrates the shell 1 and the bottom end of the drain pipe 42 is adapted to the water collection plate 7.

[0044] As one implementation method in this embodiment, to facilitate the disassembly and assembly of the water collection tray 7, such as Figure 1 , Figure 2 As shown, the bottom surface of the diversion chamber 6 is provided with three sets of fastening strips 60, which are set along the three sides of the rectangular water collection trough. The outer side of the top opening of the water collection tray 7 is provided with a fastening plate 70, which is compatible with the fastening strips 60 and is fixed to the fastening strips 60 by bolts.

[0045] The working principle of this utility model is as follows: During normal cooling operation, the driver selects the cooling mode and sets the target temperature through the control panel 11 at the front of the housing 1. Then, the control panel 11 controls the fan 2 to start and the heating tube 30 to be de-energized. After the outside air is filtered by the dust filter of the air inlet 10, it enters the fan 2 and is pressurized. It flows through the heating chamber 3 without heating. Then, it enters the evaporation chamber 4 to exchange heat with the evaporator 40. The cooled air enters the air supply chamber 50.

[0046] Simultaneously, the telescopic cylinder 51 shortens, and the bottom adjusting vane 53 is fully opened via the arc-shaped guide 55. At the same time, all adjusting vanes 53 are fully opened via the synchronizing rod 54, and the bottom adjusting vane 53 closes the top opening of the guide cavity 52. ​​Cold air passes through the air supply cavity 50, then through the air supply baffle 5, and is then delivered into the cab via the air supply outlet 12, achieving cooling. When the air passes through the air supply baffle 5, it is blocked and diverted by the baffle plate 57, flowing past both sides of the telescopic cylinder 51 to prevent direct airflow from damaging it. During this process, the condensate produced by the evaporator 40 flows into the water collection tray 7 via the drain pipe 42. When the temperature sensor 41 detects that the temperature of the evaporator 40 is ≤0℃, the display screen of the control panel 11 shows "Defrosting in progress," automatically activating the "Defrosting Mode."

[0047] In defrosting mode, the telescopic cylinder 51 extends and slides along the guide sleeve 56 via the drive arc-shaped guide 55, causing the bottom adjusting blade 53 to rotate. At the same time, the synchronous rod 54 drives the other adjusting blades 53 to rotate until the adjusting blades 53 close the air supply cavity 50, exposing the top opening of the guide cavity 52. ​​The heating tube 30 is energized for heating, and the fan 2 continues to run, supplying air to the heating cavity 3. After the air enters through the air inlet 10, it is pressurized by the fan 2 and heated by the heating cavity 3, raising the air temperature. It then enters the evaporation cavity 4, where it exchanges heat with the frost layer of the evaporator 40, melting the frost.

[0048] After the hot air carrying water vapor enters the air supply cavity 50, the airflow flows into the guide chamber 6 through the guide cavity 52. ​​The water vapor condenses into water on the inner wall of the guide chamber 6, falls into the water collection tank and flows into the water collection pan 7. The dried hot air flows back to the air inlet 10 through the air outlet of the guide chamber 6 and enters the fan 2 again, forming a "hot air circulation defrosting" path.

[0049] When the temperature sensor 41 detects that the temperature of the evaporator 40 has returned to normal, the control panel 11 automatically shuts off the heating element 30, inserts the buckle plate 70 into the buckle strip 60, and installs the water collection tray 7 under the water collection tank.

[0050] The electromechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments; they are common knowledge.

[0051] Components not described in detail in this article are existing technologies.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle-mounted air conditioning anti-freezing and defrosting device, comprising a housing (1), characterized in that: An air inlet (10) is provided on the rear side of the bottom plate of the housing (1), and a dustproof net is provided at the air inlet (10). A control panel (11) and an air outlet (12) are provided at the front of the housing (1). The interior of the housing (1) is provided with a fan (2), a heating chamber (3), an evaporation chamber (4) and an air supply baffle (5) in sequence from back to front. The air supply baffle (5) is provided with an air supply cavity (50). The fan (2), the heating chamber (3), the evaporation chamber (4) and the air supply cavity (50) are connected to each other in pairs. The heating chamber (3) is provided with a heating tube (30), and the evaporation chamber (4) is provided with an evaporator (40) and a temperature sensor (41). The temperature sensor (41) is used to detect the temperature of the evaporator (40) in real time. The bottom of the air supply cavity (50) is provided with a guide cavity (52), and the front part of the air supply cavity (50) is hinged with an adjusting blade (53). There are multiple sets of adjusting blades (53) and they are evenly arranged. The adjusting blades (53) can close the front part of the air supply cavity (50). The housing (1) is provided with a telescopic cylinder (51) for controlling the opening and closing angle of the adjusting blades (53). The bottom adjusting blades (53) can close the top opening of the guide cavity (52). The bottom of the housing (1) is provided with a flow guide chamber (6), the top opening of the flow guide chamber (6) is connected to the bottom opening of the flow guide cavity (52), and the air outlet of the flow guide chamber (6) faces the air inlet (10). The control panel (11) is electrically connected to the fan (2), the heating tube (30), the temperature sensor (41), and the telescopic cylinder (51).

2. The air defrosting and anti-freezing device of a vehicle air conditioner according to claim 1, characterized in that: The front ends of the adjusting blades (53) are all hinged to the front of the air supply cavity (50), and the rear ends of the adjusting blades (53) are all hinged to the synchronizing rod (54). The left and right ends of the adjusting blades (53) at the bottom are symmetrically provided with arc-shaped guides (55). The bottom plate of the air supply cavity (50) is provided with a slot that matches the arc-shaped guide (55). The air supply baffle (5) is provided with a guide sleeve (56) that matches the arc-shaped guide (55). The ends of the two sets of arc-shaped guides (55) are connected to a horizontal plate. The telescopic cylinder (51) drives the arc-shaped guides (55) through the horizontal plate.

3. The air defrosting and deicing device according to claim 2, characterized in that: The fixed end of the telescopic cylinder (51) is hinged to the upper front side of the air supply baffle (5), and the telescopic end of the telescopic cylinder (51) is hinged to the middle of the horizontal plate.

4. The air defrosting and deicing device according to claim 3, characterized in that: The air supply baffle (5) is provided with a baffle plate (57), which is located at the front end of the air supply cavity (50), and the size of the baffle plate (57) matches the position of the telescopic cylinder (51).

5. The air defrosting and anti-freezing device of a vehicle air conditioner according to claim 1, characterized in that: The bottom of the flow guide chamber (6) is provided with a water collection trough, and a water collection plate (7) is provided below the water collection trough. The bottom of the evaporation chamber (4) is provided with a drain pipe (42), which penetrates the shell (1). The bottom end of the drain pipe (42) corresponds to the position of the water collection plate (7).

6. The air defrosting and deicing device according to claim 5, wherein: The bottom surface of the flow guide chamber (6) is provided with a fastening strip (60), and there are multiple sets of the fastening strip (60). The outer side of the top opening of the water collection tray (7) is provided with a fastening plate (70), which is adapted to the fastening strip (60), and the fastening plate (70) and the fastening strip (60) are fixed by bolts.

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