Power assembly engine and whole vehicle test room constant temperature and humidity system

Abstract

The utility model discloses a constant-temperature and constant-humidity system for a power assembly engine and a whole vehicle test room, which is characterized in that a set of constant-humidity device is additionally arranged on an original combined air conditioner to realize a humidifying function of a combined air conditioning unit. The constant humidity device comprises a water storage tank, a water pump, an electromagnetic proportional valve, an atomizer, a humidity sensor and a controller; the water storage tank is installed on the air inlet side of the combined air conditioner and communicated with the outside through a tap water pipeline, and tap water is injected into the water storage tank. The water storage tank is connected with a water pump through a pipeline, the water pump is connected with an atomizer through a pipeline, an electromagnetic proportional valve is arranged on the connecting pipeline, and an air feeder of the combined air conditioner blows atomized fresh air to an air inlet of the test room; the humidity sensor is arranged at an air supply port of the combined air conditioner to the test room; the controller is connected with the humidity sensor, the water pump and the electromagnetic proportional valve.

Description

Technical Field

[0001] The utility model belongs to the technical field of constant temperature and humidity systems in test chambers, and specifically relates to a constant temperature and humidity system for powertrain engine and complete vehicle test chambers, and is particularly suitable for constant temperature and humidity control in test chambers when dynamometer complete vehicle simulation tests are performed in the test chambers. Background Art

[0002] The combined air conditioning units in the powertrain engine and vehicle test rooms only controlled the test room temperature and pressure, limiting test conditions. When humidity testing of the vehicle or engine was required, the test equipment was unable to meet these requirements. Users were forced to conduct vehicle testing in Hainan or in an environmental warehouse, leaving the test room unused. This resulted in low test room utilization, wasted resources due to the limited lifespan of the test equipment, and high failure rates when the equipment was not used for extended periods. Summary of the Invention

[0003] In order to solve the above-mentioned problems existing in the prior art, the utility model provides a constant temperature and humidity system for a powertrain engine and complete vehicle test room. A constant humidity device is added to the original combined air conditioner to realize the humidification function of the combined air-conditioning unit, thereby achieving the temperature, pressure and humidity control functions of the combined air-conditioning unit, improving the test conditions, laying the foundation for subsequent complex test conditions, and improving both equipment utilization and R&D efficiency.

[0004] The purpose of this utility model is achieved through the following technical solutions, in conjunction with the accompanying drawings:

[0005] A constant temperature and humidity system for a powertrain engine and vehicle test room, comprising a combined air conditioner arranged outside the test room vent and a constant humidity device added to the combined air conditioner; the constant humidity device comprises a water tank 1, a water pump 6, an electromagnetic proportional valve 7, an atomizer, a humidity sensor 10 and a controller 11; the water tank 1 is installed on the air inlet side of the combined air conditioner, the water tank 1 is connected to the outside through a tap water pipe 12, and tap water is injected into the water tank 1; the water tank 1 is connected to the water pump 6 through a pipe, the water pump 6 is connected to the atomizer 8 through a pipe, and an electromagnetic proportional valve 7 is provided on the connecting pipe, and the air supply fan 13 of the combined air conditioner blows the atomized fresh air to the air inlet of the test room; the humidity sensor 10 is arranged at the air supply port of the combined air conditioner to the test room; the controller 11 is respectively connected to the humidity sensor 10, the water pump 6, and the electromagnetic proportional valve 7.

[0006] Furthermore, a solenoid valve 5 is provided on the tap water pipeline 12 , and the solenoid valve 5 is connected to the controller 11 .

[0007] Furthermore, a liquid level sensor is provided in the water storage tank 1 , and the liquid level sensor is connected to the controller 11 .

[0008] Furthermore, the liquid level sensor consists of a low liquid level sensor 2 , a normal liquid level sensor 3 and a high liquid level sensor 4 .

[0009] Furthermore, a guide plate 9 is provided on one side of the atomizer 8, and the blower 13 of the combined air conditioner blows the atomized fresh air through the guide plate 9 to the air inlet of the test room.

[0010] The utility model has the following advantages:

[0011] The utility model realizes the requirement of controlling humidity without changing the function of the original equipment, reduces equipment procurement costs, meets test needs, and improves research and development efficiency.

[0012] Other humidification devices use electric heaters to heat the water in the water tank, consuming a large amount of electricity. Each time the water tank is low, the system replenishes the water, causing the water temperature to drop. Due to the power rating of the electric heater, this can result in insufficient steam flow and large humidity fluctuations. This utility model achieves humidification without the need for electric heating, and offers high control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings to be used in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0014] Figure 1 This is a schematic structural diagram of a constant temperature and humidity system for a powertrain engine and vehicle test chamber according to an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the air and water circulation paths of a constant temperature and humidity system in a powertrain engine and vehicle test chamber according to an embodiment of the present utility model;

[0016] In the picture:

[0017] 1-water tank; 2-low liquid level sensor; 3-normal liquid level sensor; 4-high liquid level sensor; 5-solenoid valve; 6-water pump; 7-solenoid proportional valve; 8-atomizer; 9-guide plate; 10-humidity sensor; 11-controller; 12-tap water pipeline; 13-supply fan; 14-return air fan. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0019] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0020] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0022] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Example

[0024] like Figure 1 As shown, this embodiment is a constant temperature and humidity system for a powertrain engine and vehicle test room, comprising a combined air conditioner arranged outside the test room vent and a constant humidity device added inside the combined air conditioner; the constant humidity device comprises a water tank 1, a liquid level sensor, a solenoid valve 5, a water pump 6, an electromagnetic proportional valve 7, an atomizer, a guide plate 9, a humidity sensor 10, a tap water pipe 12 and a controller 11; the water tank 1 is installed on the air inlet side of the combined air conditioner, the water tank 1 is connected to the outside through the tap water pipe 12, tap water is injected into the water tank 1, and a solenoid valve is provided on the tap water pipe 12; the water tank 1 is respectively provided with a low liquid level sensor 2, a normal Liquid level sensor 3 and high liquid level sensor 4; the water tank 1 is connected to the water pump 6 through a pipeline, the water pump 6 is connected to the atomizer 8 through a pipeline and an electromagnetic proportional valve 7 is provided on the connecting pipeline, the guide plate 9 is arranged on one side of the atomizer 8, the spray from the atomizer 8 is sprayed onto the guide plate 9, and the atomized fresh air is blown to the air inlet of the test room through the guide plate 9 by the blower 13 of the combined air conditioner; the humidity sensor 10 is arranged at the air supply port of the combined air conditioner to the test room; the controller 11 is respectively connected to the humidity sensor 10, the low liquid level sensor 2, the normal liquid level sensor 3 and the high liquid level sensor 4 signals, and is also connected to the electromagnetic valve 5, the water pump 6 and the electromagnetic proportional valve 7.

[0025] like Figure 2 As shown, the working principle of this embodiment is briefly described below:

[0026] The target temperature and target humidity are set in the controller 11; the humidity sensor 10 detects the humidity at the air outlet of the combined air conditioner to the test room and sends it to the controller. The controller determines whether humidification is needed based on the set target humidity. If the detected humidity is lower than the target humidity, the water pump 6 is controlled to run, and the water pump 6 pumps the tap water in the water tank 1 into the sprayer 8. The controller 11 controls the opening of the electromagnetic proportional valve 7 through a closed-loop PID to control the amount of water pumped into the sprayer 8; the sprayer 8 atomizes the tap water and sprays it to the guide plate 9. Finally, the air blower 13 blows the atomized fresh air through the guide plate 9 to the air outlet of the test room to humidify the test room. The air in the test room is discharged to the combined air conditioner through the exhaust port, and then the return air fan 14 discharges the air from the return air port.

[0027] Humidity levels are controlled by the opening of solenoid proportional valve 7. The amount of water in water tank 1 is detected by a water level sensor, and water injection is controlled by solenoid valve 5 on tap water line 12. If low-level sensor 2 detects no water in the water tank, controller 11 opens solenoid valve 5, beginning water replenishment. If normal-level sensor 3 detects water, solenoid valve 5 closes, stopping water replenishment. If high-level sensor 4 detects water, the controller sounds an alarm, prompting the user to inspect the device.

[0028] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the scope of protection of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention. These simple variations all fall within the scope of protection of the present invention.

[0029] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0030] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A constant temperature and humidity system for powertrain engine and vehicle test chamber, characterized in that: The invention comprises a combined air conditioner arranged outside the ventilation port of a test room and a constant humidity device added inside the combined air conditioner; the constant humidity device comprises a water storage tank (1), a water pump (6), an electromagnetic proportional valve (7), an atomizer, a humidity sensor (10) and a controller (11); the water storage tank (1) is installed on the air inlet side of the combined air conditioner, the water storage tank (1) is connected to the outside through a tap water pipe (12), and tap water is injected into the water storage tank (1); the water storage tank (1) is connected to the water pump (6) through a pipe, the water pump (6) is connected to the atomizer (8) through a pipe, and an electromagnetic proportional valve (7) is provided on the connecting pipe; the air blower (13) of the combined air conditioner blows the atomized fresh air to the air inlet of the test room; the humidity sensor (10) is arranged at the air supply port of the combined air conditioner to the test room; the controller (11) is respectively connected to the humidity sensor (10), the water pump (6) and the electromagnetic proportional valve (7).

2. A constant temperature and humidity system for a powertrain engine and vehicle test chamber as claimed in claim 1, characterized in that: The tap water pipeline (12) is provided with a solenoid valve (5), which is connected to the controller (11).

3. A constant temperature and humidity system for a powertrain engine and vehicle test chamber as claimed in claim 1, characterized in that: A liquid level sensor is provided in the water storage tank (1), and the liquid level sensor is connected to the controller (11).

4. A constant temperature and humidity system for a powertrain engine and vehicle test chamber as claimed in claim 3, characterized in that: The liquid level sensor consists of a low liquid level sensor (2), a normal liquid level sensor (3) and a high liquid level sensor (4).

5. The constant temperature and humidity system for a powertrain engine and vehicle test chamber according to claim 1, characterized in that: A guide plate (9) is provided on one side of the atomizer (8), and the blower (13) of the combined air conditioner blows the atomized fresh air through the guide plate (9) to the air inlet of the test room.

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