Air conditioner testing device

Abstract

The utility model discloses an air conditioner test device, which relates to the technical field of rail transit, and comprises a mounting bracket, an air supply shell and an air return shell, the air supply shell is arranged on the mounting bracket, and the air supply shell is provided with an air inlet, an air supply channel and an air outlet which are communicated in sequence. The air return shell is arranged on the mounting bracket, the air return shell is provided with an air return inlet, a first air return channel, a second air return channel, a third air return channel and an air return outlet which are communicated in sequence, and the first air return channel, the second air return channel and the third air return channel are arranged at included angles pairwise. Due to the fact that the air return shell is provided with the first air return channel, the second air return channel and the third air return channel, the number of the air return channels is large, and the length of the channels is large; and every two of the three air return channels are arranged at an included angle, so that the actual application scene of the rail transit vehicle can be truly simulated, and the performance test of the tested air conditioner is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, specifically to an air conditioning testing device. Background Technology

[0002] Before leaving the factory, the air conditioning units of railway vehicles need to undergo cooling capacity testing, and only those that meet the required standards can be shipped. Current testing methods for the cooling capacity of railway vehicle air conditioning systems typically use the enthalpy difference method. For example, three methods can be used: wind tunnel enthalpy difference test, loop enthalpy difference test, or room enthalpy difference test. The loop enthalpy difference test requires first drawing the exhaust air from the air conditioning inlet into a loop. The heating, humidification, and airflow control system within the loop maintains a constant enthalpy value for the cold air from the air conditioning inlet before introducing it into the air return vent for air circulation. This process allows for the control of variables and accurate measurement of the actual cooling capacity of the air conditioning system.

[0003] The prior art disclosed in announcement number CN209336743U is an air conditioning test vehicle for rail transit vehicles, which includes a frame and a top plate mounted on the frame. The top plate has two air supply duct openings, and air supply ducts are installed in the two openings respectively. The two air supply ducts are arranged in a figure-eight shape. The top plate also has a return air duct opening, and a return air longitudinal duct is provided below the return air duct opening. The return air longitudinal duct connects to the return air transverse duct. The return air transverse duct is a rectangular return air pipe, which is mounted on the frame through a return air duct support beam. An air conditioning pad beam is provided on the frame for installing the air conditioner. A caster wheel is provided at the bottom of the frame, and the caster wheel is mounted on the frame through a wheel seat plate.

[0004] However, the existing air conditioning test vehicle for rail transit vehicles still has shortcomings. For example, the return air channel of the air conditioning test vehicle is only a vertical channel with a short path. During the test, the short return air path cannot truly simulate the actual application scenario of rail transit vehicles. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an air conditioning test device to solve the technical problem that the return air channel of the existing air conditioning test vehicle is only a vertical channel with a short path, and the short return air path during testing makes it impossible to truly simulate the actual application scenario of rail transit vehicles.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides an air conditioning testing device, comprising:

[0008] Mounting bracket;

[0009] An air supply housing, disposed on the mounting bracket, wherein the air supply housing has an air inlet, an air supply channel, and an air outlet connected in sequence; and

[0010] The return air housing is provided on the mounting bracket. The return air housing has a return air inlet, a first return air channel, a second return air channel, a third return air channel and a return air outlet connected in sequence. The first return air channel, the second return air channel and the third return air channel are all arranged vertically in pairs.

[0011] In some embodiments, the connection between the first return air duct and the second return air duct is arc-shaped, and the connection between the second return air duct and the third return air duct is arc-shaped.

[0012] In some embodiments, the return air housing is further provided with a fourth return air passage, which connects the third return air passage and the return air outlet, and the fourth return air passage is arranged perpendicularly to the third return air passage.

[0013] In some embodiments, the return air housing is further provided with a fifth return air passage, one end of which is connected to the fourth return air passage, and the other end is the return air outlet. The fifth return air passage is arranged perpendicularly to the fourth return air passage.

[0014] In some embodiments, the first return air duct, the second return air duct, and the third return air duct are sequentially connected to form a return air unit. There are two return air units, which are respectively disposed on both sides of the mounting bracket. One end of each of the two return air units is connected to the return air inlet, and the other end is respectively connected to both ends of the fourth return air duct. The two ends of the fourth return air duct are connected to the return air outlet.

[0015] In some embodiments, the air conditioning test apparatus further includes a return air box, with two return air units connected to the left and right sides of the return air box respectively, and a return air inlet between the two sides of the return air box.

[0016] In some embodiments, the air supply channel includes a first air supply channel and a second air supply channel that are connected and both are arc-shaped. The first air supply channel and the second air supply channel have opposite arc-shaped bending directions. The first air supply channel is connected to the air inlet, and the second air supply channel is connected to the air outlet.

[0017] In some embodiments, the air supply channel further includes a third air supply channel and a fourth air supply channel that are connected to each other. The third air supply channel is straight, and the fourth air supply channel is arc-shaped. The fourth air supply channel and the second air supply channel are symmetrically arranged about the third air supply channel. The third air supply channel is connected to the second air supply channel, and the fourth air supply channel is connected to the air outlet.

[0018] In some embodiments, the mounting bracket is equipped with reinforcing ribs.

[0019] In some embodiments, the bottom of the mounting bracket is equipped with omnidirectional casters.

[0020] Compared with existing technologies, the air supply shell of the air conditioning test device provided by this utility model has an air inlet that can be connected to the air supply outlet of the air conditioner under test, an air outlet that connects to the inlet of the test equipment, an outlet that connects to the return air inlet of the return air shell, and a return air outlet that connects to the air inlet of the air conditioner under test. The airflow blown out by the air conditioner under test passes sequentially through the air inlet of the air supply shell, the air supply channel, the air outlet, the test equipment, the return air inlet of the return air shell, the first return air channel, the second return air channel, the third return air channel, and the return air outlet, and finally enters the air inlet of the air conditioner under test to form an air circulation. When the airflow passes through the test equipment, the test equipment can stabilize the enthalpy difference of the airflow to objectively evaluate the performance of the air conditioner under test. Since the return air shell of this application has three channels: the first return air channel, the second return air channel, and the third return air channel, the number of return air channels is large and the channel length is long; and the three return air channels are arranged perpendicularly to each other, which can realistically simulate the actual application scenario of rail transit vehicles, and the performance test of the air conditioner under test is more accurate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the air conditioning test device provided in an embodiment of the present invention from one perspective;

[0022] Figure 2 This is a structural schematic diagram of the air conditioning test device provided in another embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] To address the technical problem that existing air conditioning test vehicles only have a single vertical return air channel with a short path, making it difficult to realistically simulate the actual application scenarios of rail transit vehicles during testing, this invention provides an air conditioning test device that can achieve a larger number of return air channels with longer channel lengths; moreover, multiple return air channels are arranged at an angle to each other, which can realistically simulate the actual application scenarios of rail transit vehicles, resulting in more accurate performance testing of the air conditioner under test.

[0025] It should be noted that the air conditioning test device described in this utility model is used for, but not limited to, air conditioning testing of rail transit vehicles. For ease of explanation, this utility model only uses the application of the air conditioning test device to air conditioning testing of rail transit vehicles as an example. The principle of the air conditioning test device applied to testing other types of equipment is essentially the same as that applied to air conditioning testing of rail transit vehicles, and will not be described in detail here.

[0026] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of an air conditioning test device in one embodiment of the present invention. The air conditioning test device includes a mounting bracket 1, an air supply shell 2, and a return air shell 3. The air supply shell 2 and the return air shell 3 are both mounted on the mounting bracket 1. The mounting bracket 1 is mainly used to bear loads to support the air supply shell 2 and the return air shell 3.

[0027] Air supply housing 2 is mounted on mounting bracket 1, and air supply housing 2 has an air inlet 21, an air supply channel 22, and an air outlet 23 connected in sequence; and

[0028] The return air housing 3 is mounted on the mounting bracket 1. The return air housing 3 has a return air inlet 31, a first return air passage 32, a second return air passage 33, a third return air passage 34 and a return air outlet 35 connected in sequence. The first return air passage 32, the second return air passage 33 and the third return air passage 34 are all set at an angle to each other.

[0029] In this embodiment, the air inlet 21 of the air supply housing 2 can be used to connect to the air outlet of the air conditioner under test, the air outlet 23 of the air supply housing 2 is connected to the inlet of the test equipment, the outlet of the test equipment is connected to the return air inlet 31 of the return air housing 3, and the return air outlet 35 of the return air housing 3 is connected to the air inlet of the air conditioner under test, thus forming a closed airflow loop. During testing, the air conditioner under test is turned on, and the airflow blown out by the air conditioner under test passes sequentially through the air inlet 21 of the air supply housing 2, the air supply channel 22, the air outlet 23, the test equipment, the return air inlet 31 of the return air housing 3, the first return air channel 32, the second return air channel 33, the third return air channel 34, and the return air outlet 35, and finally enters the air inlet of the air conditioner under test to form an airflow circulation. When the airflow passes through the test equipment, the test equipment can stabilize the enthalpy difference of the test airflow to facilitate objective evaluation of the performance of the air conditioner under test. The experimental equipment in this embodiment is similar to the enthalpy difference method experimental detection equipment in the existing patent with announcement number CN203798820U. The working principles of the two are similar, and will not be described in detail here.

[0030] The return air housing 3 has three sequentially connected return air channels. The number of return air channels is relatively large and the channel length is relatively long. In addition, the first return air channel 32, the second return air channel 33 and the third return air channel 34 are all set at an angle to each other, which can realistically simulate the actual application scenario of rail transit vehicles, and make the performance test of the air conditioner under test more accurate.

[0031] In one embodiment, please refer to Figure 1 and Figure 2 The first return air duct 32, the second return air duct 33, and the third return air duct 34 are arranged vertically in pairs to better reflect the actual application scenarios of rail transit vehicles, making the performance testing of the air conditioner under test more accurate.

[0032] In one embodiment, please refer to Figure 1 and Figure 2 The connection between the first return air duct 32 and the second return air duct 33 is arc-shaped, as is the connection between the second return air duct 33 and the third return air duct 34. In this embodiment, the connection between adjacent return air ducts is set in an arc shape to allow airflow to pass smoothly through the connection during its flow. This is essentially how the air conditioning ducts of actual rail transit vehicles are designed, making the design more closely resemble the actual application scenario of rail transit vehicles and resulting in more accurate performance testing of the air conditioning system under test.

[0033] In one embodiment, please refer to Figure 1 and Figure 2 The return air housing 3 also has a fourth return air duct 36, with its two ends connected to the third return air duct 34 and the return air outlet 35, respectively. The fourth return air duct 36 is perpendicular to the third return air duct 34. In this embodiment, by adding the fourth return air duct 36, the flow path of the return airflow can be further extended. Furthermore, the fourth return air duct 36 is perpendicular to the third return air duct 34 and parallel to the first return air duct 32, which facilitates a more realistic simulation of the actual application scenario of rail transit vehicles, resulting in more accurate performance testing of the air conditioner under test.

[0034] In one embodiment, please refer to Figure 1 and Figure 2 The return air housing 3 also has a fifth return air duct 37. One end of the fifth return air duct 37 is connected to the fourth return air duct 36, and the other end is the return air outlet 35. The fifth return air duct 37 is perpendicular to the fourth return air duct 36. In this embodiment, by adding the fifth return air duct 37, the flow path of the return airflow can be further extended. Furthermore, the fifth return air duct 37 is perpendicular to the fourth return air duct 36 and parallel to the second return air duct 33, which facilitates a more realistic simulation of the actual application scenario of rail transit vehicles, resulting in more accurate performance testing of the air conditioner under test.

[0035] In one embodiment, please refer to Figure 1 and Figure 2 The first return air duct 32, the second return air duct 33, and the third return air duct 34 are connected in sequence to form a return air unit. Figure 1The illustrated embodiment has two return air units, which are respectively located on both sides of the mounting bracket 1. One end of each return air unit is connected to the return air inlet 31, and the other end is connected to both ends of the fourth return air duct 36. The two ends of the fourth return air duct 36 are connected to the return air outlet 35. In this embodiment, the fourth return air duct 36 is approximately T-shaped, with both ends connected to the two return air units, and the middle part connected to one end of the fifth return air duct 37. The other end of the fifth return air duct 37 is the return air outlet 35.

[0036] In one embodiment, please refer to Figure 1 and Figure 2 The air conditioning test apparatus also includes a return air box 4, with two return air units connected to its left and right sides respectively. The return air box 4 has the aforementioned return air inlet 31 between its two sides. In this embodiment, by setting up the return air box 4, two return air units can be connected to both sides of the return air box 4 simultaneously. The outlet of the test equipment can be connected to the return air inlet 31 of the return air box 4. The airflow output from the test equipment can enter through the return air inlet 31 and simultaneously flow into the two return air units, thus facilitating the simulation of more complex air conditioning duct application scenarios in rail transit vehicles.

[0037] In one embodiment, please refer to Figure 1 and Figure 2 The air supply channel 22 includes a first air supply channel 221 and a second air supply channel 222 that are connected and both are arc-shaped. The arc-shaped bending directions of the first air supply channel 221 and the second air supply channel 222 are opposite. The first air supply channel 221 is connected to the air inlet 21, and the second air supply channel 222 is connected to the air outlet 23. In this embodiment, the air inlet 21 is connected to the air outlet of the air conditioner under test, and the air outlet 23 is connected to the inlet of the test equipment. The airflow blown out from the air outlet of the air conditioner under test can pass through the curved first air supply channel 221 and the second air supply channel 222 in sequence before entering the test equipment. The first air supply channel 221 and the second air supply channel 222 can buffer the airflow so that the airflow entering the test equipment is gentler, which is beneficial for the test equipment to stabilize the enthalpy difference of the airflow.

[0038] In one embodiment, please refer to Figure 1 and Figure 2The air supply channel 22 also includes a third air supply channel 223 and a fourth air supply channel 224 that are connected to each other. The third air supply channel 223 is straight, and the fourth air supply channel 224 is arc-shaped. The fourth air supply channel 224 and the second air supply channel 222 are symmetrically arranged about the third air supply channel 223. The third air supply channel 223 is connected to the second air supply channel 222, and the fourth air supply channel 224 is connected to the air outlet 23. In this embodiment, by adding the third air supply channel 223 and the fourth air supply channel 224, the length of the air supply channel 22 is extended, making the airflow blowing into the test equipment through the air supply channel 22 gentler, which is beneficial to improving the enthalpy difference stability of the airflow in the test equipment.

[0039] In one embodiment, please refer to Figure 1 and Figure 2 The mounting bracket 1 has universal casters 11 installed at its bottom. In this embodiment, by installing universal casters 11 at the bottom of the mounting bracket 1, the mounting bracket 1 can be moved on the ground via the universal casters 11, so as to adjust the position of the air conditioning test device and test air conditioners in different locations. In addition, the mounting bracket 1 is equipped with multiple reinforcing ribs 12, which are inclined to enhance the structural strength of the mounting bracket 1.

[0040] To better understand this utility model, the following is combined with... Figures 1 to 2 The technical solution of this utility model is described in detail below:

[0041] The air supply housing 2 of the air conditioning test device provided by this utility model has an air inlet 21 that can be connected to the air supply outlet of the air conditioner under test, an air outlet 23 that connects to the inlet of the test equipment, an outlet of the test equipment that connects to the return air inlet 31 of the return air housing 3, and a return air outlet 35 that connects to the air inlet of the air conditioner under test. The airflow blown out by the air conditioner under test passes sequentially through the air inlet 21, air supply channel 22, air outlet 23, test equipment, return air inlet 31, first return air channel 32, second return air channel 33, third return air channel 34, and return air outlet 35 of the return air housing 3, and finally enters the air inlet of the air conditioner under test to form an air circulation. When the airflow passes through the test equipment, the test equipment can stabilize the enthalpy difference of the airflow and objectively evaluate the performance of the air conditioner under test. Since the return air shell 3 of this application has three channels: the first return air channel 32, the second return air channel 33 and the third return air channel 34, the number of return air channels is large and the resulting return air channels are long; and the three return air channels are set at an angle to each other, which can truly simulate the actual application scenario of rail transit vehicles, and the performance test of the air conditioner under test is more accurate.

[0042] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An air conditioning testing apparatus, characterized in that, include: Mounting bracket; An air supply housing is provided on the mounting bracket, and the air supply housing has an air inlet, an air supply channel and an air outlet connected in sequence. and The return air housing is provided on the mounting bracket. The return air housing has a return air inlet, a first return air channel, a second return air channel, a third return air channel and a return air outlet connected in sequence. The first return air channel, the second return air channel and the third return air channel are all arranged vertically in pairs.

2. The air conditioning testing apparatus according to claim 1, characterized in that, The connection between the first return air duct and the second return air duct is arc-shaped, and the connection between the second return air duct and the third return air duct is arc-shaped.

3. The air conditioning testing apparatus according to claim 1, characterized in that, The return air casing is also provided with a fourth return air channel. The third return air channel and the return air outlet are connected through the fourth return air channel. The fourth return air channel is arranged perpendicularly to the third return air channel.

4. The air conditioning testing apparatus according to claim 3, characterized in that, The return air casing is also provided with a fifth return air channel. One end of the fifth return air channel is connected to the fourth return air channel, and the other end is the return air outlet. The fifth return air channel is arranged perpendicularly to the fourth return air channel.

5. The air conditioning testing apparatus according to claim 3, characterized in that, The first return air duct, the second return air duct, and the third return air duct are connected in sequence to form a return air unit. There are two return air units, which are respectively located on both sides of the mounting bracket. One end of each of the two return air units is connected to the return air inlet, and the other end is connected to both ends of the fourth return air duct. The two ends of the fourth return air duct are connected to the return air outlet.

6. The air conditioning testing apparatus according to claim 5, characterized in that, The air conditioning test device also includes a return air box, with two return air units connected to the left and right sides of the return air box respectively, and a return air inlet between the two sides of the return air box.

7. The air conditioning testing apparatus according to claim 1, characterized in that, The air supply channel includes a first air supply channel and a second air supply channel that are connected and both are arc-shaped. The arc-shaped bending directions of the first air supply channel and the second air supply channel are opposite. The first air supply channel is connected to the air inlet, and the second air supply channel is connected to the air outlet.

8. The air conditioning testing apparatus according to claim 7, characterized in that, The air supply channel also includes a third air supply channel and a fourth air supply channel that are connected to each other. The third air supply channel is straight and the fourth air supply channel is arc-shaped. The fourth air supply channel and the second air supply channel are symmetrically arranged about the third air supply channel. The third air supply channel is connected to the second air supply channel and the fourth air supply channel is connected to the air outlet.

9. The air conditioning testing apparatus according to claim 1, characterized in that, The mounting bracket is equipped with reinforcing ribs.

10. The air conditioning testing apparatus according to claim 1, characterized in that, The bottom of the mounting bracket is equipped with omnidirectional casters.

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