Fresh air introduction device for testing air conditioner

Abstract

The utility model relates to the technical field of air conditioner testing, in particular to a fresh air introduction device for air conditioner testing, which comprises a constant-temperature water tank, a testing chamber, an air-cooled chiller unit, a surface cooling coil, a surface cooling coil heat exchange water system, a tested machine water system and a constant-temperature water tank heating system. The constant-temperature water tank exchanges heat with the surface cooling coil through the surface cooling coil heat exchange water system, the constant-temperature water tank is connected with the air-cooled chiller unit through the tested machine water system, and the constant-temperature water tank is connected with the constant-temperature water tank heating system; the fresh air leading-in device for air conditioner testing comprises at least one fresh air leading-in assembly, and each fresh air leading-in assembly comprises an air feeder used for leading air into the testing chamber; the air supply pipe is connected to the air feeder; the air supply pipe is provided with an air inlet communicated with the inner side space of the air feeder and at least one air outlet communicated with the inner side space of the test chamber; the air inlet valve is arranged at the air inlet; and at least one air outlet valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioner testing technical field, concretely relates to a fresh air introduction device for air conditioner testing. BACKGROUND

[0002] In the current air conditioner testing field, in order to simulate real use environment, the control of the environmental temperature in the test room is crucial. In the prior art, a common environmental temperature control mode is to utilize the constant temperature water tank and the surface cooling coil in the test room to exchange heat through the intermediate plate, and in this mode, the cold quantity in the constant temperature water tank is transferred to the surface cooling coil in the test room through the intermediate plate, so as to realize the purpose of reducing the environmental temperature in the test room.

[0003] When the air-cooled chiller in the test room is refrigerated, the condenser is in the heating state and thus releases a large amount of heat to the test room. In theory, the heat exchange quantity Qcc of the condenser (fins) and air is equal to the heat exchange quantity Qec of the evaporator and the constant temperature water tank plus the operating power P of the unit, i.e. Qcc=Qec+P. This means that the heat released by the unit to the test room is greater than the cold quantity released to the test room, and the excess heat is approximately equal to the operating power of the unit. In this case, the cold quantity of the constant temperature water tank often cannot meet the cooling demand of the test room.

[0004] To solve the problem of insufficient cold quantity, the current common method is to open the compression condensing unit to increase the cold quantity input and simultaneously open the energy-saving heat dissipation system, but this method has some drawbacks. On the one hand, the compression condensing unit and the energy-saving heat dissipation system consume more energy in operation, increasing the testing cost. On the other hand, the structures of the two are complex, involving multiple components and complex connection relationships, which not only increases the difficulty of installation, debugging and maintenance of the equipment, but also makes the equipment more prone to failure in long-term operation, reducing the stability and reliability of the equipment.

[0005] Therefore, how to solve the above-mentioned problems of the prior art, such as increased testing cost, has become a research topic of the utility model. UTILITY MODEL CONTENT

[0006] The utility model aims to provide a fresh air introduction device for air conditioner testing.

[0007] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0008] The application discloses a fresh air introduction device for air conditioner testing, which comprises a constant temperature water tank, a test chamber, an air-cooled cold water unit, a surface cooling coil, a surface cooling coil heat exchange water system, a measured machine water system and a constant temperature water tank heating system, wherein the surface cooling coil is arranged in the test chamber, the constant temperature water tank exchanges heat with the surface cooling coil through the surface cooling coil heat exchange water system, the constant temperature water tank is connected with the air-cooled cold water unit through the measured machine water system, and the constant temperature water tank is connected with the constant temperature water tank heating system.

[0009] The fresh air introduction device for air conditioner testing comprises at least one fresh air introduction assembly, and the fresh air introduction assembly comprises:

[0010] An air supply fan is arranged outside the test chamber and used for supplying air outside the test chamber into the test chamber;

[0011] An air supply pipe is connected with the air supply fan and used for guiding the air supplied by the air supply fan; the air supply pipe is provided with an air inlet communicating with an inner space of the air supply fan and at least one air outlet communicating with an inner space of the test chamber;

[0012] An air inlet valve is arranged at the air inlet and used for adjusting the air inlet amount of the air inlet per unit time;

[0013] At least one air outlet valve is arranged at the air outlet and used for adjusting the air outlet amount of the air outlet per unit time.

[0014] It is emphasized that the constant temperature water tank, the test chamber, the air-cooled cold water unit, the surface cooling coil, the surface cooling coil heat exchange water system, the measured machine water system and the constant temperature water tank heating system are all prior art known by those skilled in the art, and the application can appropriately adjust the structures in the prior art. The application focuses on the fresh air introduction assembly.

[0015] During the testing, the temperature in the test chamber needs to reach a set temperature, and the air-cooled cold water unit releases more heat to the test chamber than cold air, so that additional cold air needs to be supplied to the test chamber. Compared with the prior art of arranging a compression condensing unit and an energy-saving heat dissipation system, the fresh air introduction assembly is arranged to replace the compression condensing unit and the energy-saving heat dissipation system, so that the number of structures used for testing is reduced, the testing cost, the resource consumption and the stability and reliability of the equipment are reduced.

[0016] Compared with the way that air enters the test chamber naturally through the ventilation opening, the way that air is sucked by the air blower can increase the transfer amount of unit actual indoor air and improve the cooling speed in the test chamber.

[0017] By setting the air inlet valve and the air outlet valve, the air intake amount at the air inlet per unit time and the air exhaust amount at the air outlet per unit time can be flexibly adjusted, the use effect and the application range of the application are improved, and the application can also flexibly cope with the situation that the temperature in the test chamber rises or falls rapidly.

[0018] Further technical solutions, the air blower and the air supply pipe are both placed in the test chamber;

[0019] The air blower is attached to the inner side surface of the test chamber.

[0020] The size of the ventilation opening is less than or equal to the cross-sectional size of the air blower.

[0021] The air blower and the air supply pipe are both placed in the test chamber, so that the overall space required by the fresh air introduction device in the technical solution of the application is reduced, and the overall aesthetic degree is improved.

[0022] The air blower is attached to the inner side surface of the test chamber, so that the air blower can suck air outside the test chamber, and the air blower can also block the ventilation opening.

[0023] The size of the ventilation opening is less than or equal to the cross-sectional size of the air blower, and the contact surfaces of the two can be circular. By setting the size as described above, air outside the test chamber can be prevented from entering the test chamber directly without passing through the air blower, thereby preventing the air intake amount per unit time from being unable to be accurately adjusted.

[0024] A small-sized air outlet hole can be formed on the test chamber.

[0025] Further technical solutions, the air supply pipe is provided with an air supply section for reducing the resistance of air, and / or the air supply pipe is provided with a filter section for filtering impurities in the air.

[0026] When air flows in the air supply pipe, air molecules will rub against the inner wall surface of the air supply pipe, and this friction will cause a loss of air pressure.

[0027] The purpose of setting the air supply section includes reducing the indoor negative pressure generated by the resistance of the air supply pipe during the circulation of indoor and outdoor air.

[0028] By setting the air supply section, the following effects can be achieved:

[0029] The air supply section can overcome the air supply resistance to promote the relatively uniform air volume of each air outlet in the air supply pipe, so that the air volume of each air outlet can meet the predetermined requirements.

[0030] The air supply section helps to maintain normal flow speed of air in the air supply pipe, and is beneficial to keep the air clean;

[0031] Reasonable overcoming of the air supply pipe resistance can optimize the energy consumption of the air supply system, and can reduce the power of the air supply fan under the premise of ensuring the air supply amount, thereby saving energy.

[0032] The air supply section can be a flow guide plate arranged in the tubular structure.

[0033] By arranging the filter section, impurities in the air entering the test chamber are filtered, avoiding the need for subsequent cleaning steps or increasing the difficulty of subsequent cleaning steps.

[0034] The filter section can be a filter plate, filter cotton or the like arranged in the tubular structure.

[0035] In a further technical solution, the fresh air introduction assembly is provided in two.

[0036] Along the width direction of the air-cooled chiller, the two fresh air introduction assemblies are respectively arranged on the symmetrically opposite sides of the air-cooled chiller.

[0037] By limiting the number and position of the fresh air introduction assembly in this embodiment, the temperature adjustment speed in the test chamber can be improved, and the uniform temperature field setting in each area of the test chamber can be promoted.

[0038] The air-cooled chiller in the test chamber is generally a single one, at this time, the better setting is to arrange two fresh air introduction assemblies on the symmetrically opposite sides of the air-cooled chiller along the width direction of the air-cooled chiller, and the number of the introduced fresh air introduction assemblies is less but the temperature adjustment effect is better.

[0039] In a further technical solution, along the width direction of the air-cooled chiller, temperature detection assemblies are arranged on the symmetrically opposite sides of the air-cooled chiller, and the temperature detection assemblies serve as a mechanism for adjusting the fresh air introduction assembly by detecting the temperature in different areas of the test chamber.

[0040] The arrangement of the temperature detection assembly enables the fresh air introduction assembly to dynamically adjust the temperature in the test chamber more flexibly, improves the timeliness of the adjustment, and further promotes the uniform temperature field setting in each area of the test chamber.

[0041] In a further technical solution, at least two air outlets are arranged on the air supply pipe and are uniformly distributed along the length direction of the air-cooled chiller.

[0042] The temperature detection assembly includes at least two temperature detection members which are uniformly distributed along the length direction of the air-cooled chiller.

[0043] The increase in the number of air outlets further facilitates the uniform setting of the temperature field in each area of the test chamber.

[0044] The temperature detection members are arranged in multiple, which also further facilitates the uniform setting of the temperature field in each area of the test chamber, and the number and position of the temperature detection members are adjusted according to the number and position of the air outlets.

[0045] In a further aspect, the number of temperature detection members is equal to the sum of the number of air outlets and the number of air inlets.

[0046] In the width direction of the air-cooled water chiller, the projection of each air outlet on any one of the air supply pipes and the projection of each temperature detection member in any one of the temperature detection assemblies are staggered.

[0047] This part is more suitable for the case where the number of air outlets and the number of temperature detection members is small, which can reduce the number of air outlets to be invested, and further reduce the number of air outlet valves and other components, thereby further reducing the cost. The number of air outlets can also be increased for the purpose of increasing accurate control and uniform temperature control.

[0048] In a further aspect, the air outlets are arranged towards the space where the air-cooled water chiller is located.

[0049] Through this part, the temperature regulation effect is improved.

[0050] In a further aspect, the air outlets are each provided with a detector.

[0051] Through this part, the uniformity of the temperature field in the test chamber is further ensured.

[0052] As for the "first", "second", etc. used in this text, it does not mean to particularly indicate the order or sequence, nor to limit the case, but only to distinguish the components or operations described by the same technical terms.

[0053] As for the "connection" or "positioning" used in this text, it can mean that two or more components or devices are in direct physical contact with each other, or are indirectly in physical contact with each other, or can mean that two or more components or devices are in operation or action with each other.

[0054] As for the "contain", "include", "have" and the like used in this text, they are all open terms, that is, they mean to include but not limited to.

[0055] As used herein, the terms have their ordinary meaning in the field of use, unless otherwise indicated. Certain terms used to describe the application are discussed below or elsewhere in the specification, to provide additional guidance to the skilled worker in the art regarding the description of the application.

[0056] As used herein, the terms "front", "back", "up", "down", "left", "right" and the like refer to directions in the drawings to which the application relates, and are not intended to mean specific orientations of the application as embodied or as can be carried out, unless otherwise specified.

[0057] The working principle and advantages of the utility model are as follows: when the temperature in the test chamber is higher than the set temperature, the fresh air introduction assembly is started, the air outside the test chamber is transferred to the test chamber through the suction of the air supply fan and the guidance of the air supply pipe, and the purpose of gradually reducing the temperature in the test chamber to the set temperature is achieved. The technical scheme of the application sets the fresh air introduction assembly to replace the compression condensing unit and the energy-saving heat dissipation system, reduces the number of structures used for testing, realizes the purposes of reducing the structure and testing cost, reducing resource consumption and improving the stability and reliability of the equipment. Compared with the way of allowing air to enter the test chamber through the ventilation opening, the way of using the air supply fan to suck air can improve the transfer amount of unit actual air and improve the cooling speed in the test chamber. BRIEF DESCRIPTION OF DRAWINGS

[0058] Figure 1 It is a structural schematic view of the air conditioner testing device in the prior art;

[0059] Figure 2 It is a structural schematic view of the fresh air introduction device for air conditioner testing of the utility model embodiment;

[0060] Figure 3 It is a sectional view of the air supply pipe, the air supply section and the filter section of the utility model embodiment.

[0061] In the above drawings: 1, constant temperature water tank; 2, test chamber; 21, ventilation opening; 3, air-cooled water chiller; 4, surface cooling coil; 5, surface cooling coil heat exchange water system; 6, measured machine water system; 7, constant temperature water tank heating system; 8, fresh air introduction assembly; 81, air supply fan; 82, air supply pipe; 821, air outlet; 83, air inlet valve; 84, air outlet valve; 85, air supply section; 86, filter section; 9, temperature detection assembly; 91, temperature detection piece; 10, detector. DETAILED DESCRIPTION

[0062] The utility model will be further described below in combination with the drawings and embodiments:

[0063] Embodiment: The following will be clearly explained to the present case in the figure and detailed description, any person skilled in the art after understanding the embodiment of the present case, when can be taught by the technology of the present case, to change and modify, it does not deviate from the spirit and scope of the present case.

[0064] The terms used herein are only for describing specific embodiments, and are not intended to limit the present case. The singular form such as "a", "this", "this", "this" and "the" as used herein also includes the plural form.

[0065] Reference Figures 1-3 A new air introduction device for air conditioner test, comprising a constant temperature water tank 1, a test chamber 2, an air-cooled cold water unit 3, a surface cooling coil 4, a surface cooling coil heat exchange water system 5, a measured machine water system 6, a constant temperature water tank heating system 7, the constant temperature water tank 1 exchanges heat with the surface cooling coil 4 through the surface cooling coil heat exchange water system 5, the constant temperature water tank 1 is connected with the air-cooled cold water unit 3 through the measured machine water system 6, and the constant temperature water tank 1 is connected with the constant temperature water tank heating system 7; the new air introduction device for air conditioner test comprises at least one new air introduction assembly 8, and the new air introduction assembly 8 comprises:

[0066] A blower 81 is used as a component for sending air outside the test chamber 2 into the test chamber 2; a ventilation opening 21 is arranged on the test chamber 2 corresponding to the blower 81;

[0067] A supply air pipe 82 is connected to the blower 81 and used as a component for guiding the air sent by the blower 81; the supply air pipe 82 has an air inlet communicating with the inner space of the blower 81 and at least one air outlet 821 communicating with the inner space of the test chamber 2;

[0068] An air inlet valve 83 is arranged at the air inlet and used as a component for adjusting the air inlet amount per unit time at the air inlet;

[0069] At least one air outlet valve 84 is used as a component for adjusting the air outlet amount per unit time at the air outlet 821; the air outlet 821 is provided with the air outlet valve 84.

[0070] It should be emphasized that the constant temperature water tank 1, the test chamber 2, the air-cooled cold water unit 3, the surface cooling coil 4, the surface cooling coil heat exchange water system 5, the measured machine water system 6, and the constant temperature water tank heating system 7 are prior art known to those skilled in the art, and the present application may make appropriate adjustments to the structure in these prior art. The focus of the present application is the new air introduction assembly 8.

[0071] The air volume of the blower 81 is automatically adjusted according to the set temperature of the test chamber 2.

[0072] When the temperature in the test chamber 2 needs to reach the set temperature, the air in the test chamber 2 needs to be cooled, and the air in the test chamber 2 needs to be cooled. Compared with the existing setting of the compression condensing unit and the energy-saving heat dissipation system, the new air introduction assembly 8 of the present application is arranged to replace the compression condensing unit and the energy-saving heat dissipation system, thereby reducing the number of structures used for testing, achieving the purposes of reducing the structure and testing cost, reducing the resource consumption and improving the stability and reliability of the equipment.

[0073] When the temperature in the test chamber 2 is higher than the set temperature, the new air introduction assembly 8 is started, the air outside the test chamber 2 is transferred into the test chamber 2 through the suction of the air supply fan 81 and the guidance of the air supply pipe 82, and the temperature in the test chamber 2 is gradually reduced to the set temperature.

[0074] Compared with the natural air entering the test chamber 2 through the air vent 21, the air suction by the air supply fan 81 can improve the transfer amount of the unit actual air and improve the cooling speed in the test chamber 2.

[0075] Through the setting of the air inlet valve 83 and the air outlet valve 84, the air inlet amount per unit time at the air inlet and the air outlet amount per unit time at the air outlet 821 can be flexibly adjusted, the use effect and the application range of the present application can be improved, and the rapid temperature rise and rapid temperature drop in the test chamber 2 can be flexibly coped with.

[0076] Optionally, the air supply fan 81 is provided as an existing fan.

[0077] Optionally, the air inlet valve 83 and the air outlet valve 84 are provided as existing control valves.

[0078] Optionally, the number of air vents 21 is the same as the number of air supply fans 81.

[0079] For the control of the air supply fan 81 (the air volume can be 10000-80000m3 / h, and the static pressure can be 600pa), it is supplemented that the ambient temperature (the refrigeration working condition ambient temperature is usually 24.5-43℃) can be pre-set, the air inlet valve 83 opening size can be changed through the PLC control program, and the fan speed can be changed by controlling the frequency of the frequency converter, so as to control the air introduction amount and mix the indoor circulating air, so that the temperature in the test chamber 2 gradually reaches the set temperature. The PLC control is a prior art known to those skilled in the art, and will not be described here.

[0080] The temperature control of the constant temperature water tank 1 is as follows: the temperature of the constant temperature water tank 1 (usually controlled at 15-20℃) is set through the PLC control program, the heat exchange amount of the constant temperature water tank 1 and the surface cooling coil 4 is controlled by controlling the frequency of the fan frequency converter, so that the constant temperature water tank 1 gradually reaches the set temperature.

[0081] See Figure 2 In this embodiment, both the blower 81 and the air duct 82 are placed inside the test chamber 2;

[0082] The blower 81 is attached to the inner surface of the test chamber 2;

[0083] The size of the vent 21 is less than or equal to the cross-sectional size of the blower 81.

[0084] Both the blower 81 and the air supply duct 82 are placed inside the test chamber 2. This arrangement reduces the overall space required for the fresh air introduction device in the technical solution of this application and improves the overall aesthetics.

[0085] The blower 81 is attached to the inner surface of the test chamber 2. This arrangement facilitates the blower 81 to draw in air from outside the test chamber 2 and also makes it easier for the blower 81 to block the opening of the ventilation port 21.

[0086] The size of the vent 21 opening is less than or equal to the cross-sectional size of the blower 81. Here, the contact surfaces of both can be set to be circular. By setting the above dimensions, the air outside the test chamber 2 can be prevented from entering the test chamber 2 directly without passing through the blower 81, thereby avoiding the inability to accurately adjust the air volume entering the test chamber 2 per unit time.

[0087] Smaller air vents can be made in test chamber 2.

[0088] See Figure 3 In this embodiment, the air supply duct 82 is provided with an air supply section 85 for reducing air resistance, and / or the air supply duct 82 is provided with a filter section 86 for filtering impurities in the air.

[0089] When air flows inside the air supply duct 82, air molecules will rub against the inner wall surface of the air supply duct 82, and this friction will lead to a loss of air pressure.

[0090] The purpose of setting up the air supply section 85 is to reduce the indoor negative pressure generated during the indoor-outdoor air circulation process due to the resistance of the air supply duct 82.

[0091] The effect of setting the air supply section to 85 is as follows:

[0092] The air supply section 85 overcomes the air supply resistance, which can promote a relatively uniform air volume in each air outlet 821 in the air supply duct 82, so that the air volume of each air outlet 821 meets the predetermined requirements.

[0093] The air supply section 85 overcomes the air supply resistance, which helps maintain the normal air flow speed in the air supply duct 82 and helps maintain the cleanliness of the air.

[0094] Overcoming the resistance of the air supply duct 82 in a reasonable way can optimize the energy consumption of the air supply system. It can reduce the power of the blower 81 while ensuring the air supply volume, thereby saving energy.

[0095] By setting up filter section 86, impurities are filtered from the air entering test chamber 2, avoiding the need to increase subsequent cleaning steps or the difficulty of subsequent cleaning steps.

[0096] See Figure 2 In this embodiment, the fresh air introduction component 8 is configured as two;

[0097] Along the width direction of the air-cooled chiller unit 3, the two fresh air introduction components 8 are respectively arranged on the symmetrical sides of the air-cooled chiller unit 3.

[0098] By limiting the number and location of the fresh air introduction components 8 in this embodiment, the speed of temperature adjustment in the test chamber 2 can be improved and the uniform temperature field setting in each area of ​​the test chamber 2 can be promoted.

[0099] The air-cooled chiller unit 3 in the test chamber 2 is usually a single unit. In this case, a better arrangement is to set two fresh air introduction components 8 on the symmetrical sides of the air-cooled chiller unit 3 along the width direction. The number of fresh air introduction components 8 is small, but the temperature regulation effect is better.

[0100] See Figure 2 In this embodiment, along the width direction of the air-cooled chiller unit 3, temperature detection components 9 are provided on both symmetrical sides of the air-cooled chiller unit 3. The temperature detection components 9 serve as mechanisms for adjusting the fresh air introduction components 8 by detecting the temperature of different areas in the test chamber 2.

[0101] The adjustment of the fresh air intake component 8 includes adjusting the intake and exhaust air volumes.

[0102] The temperature detection component 9 prompts the fresh air introduction component 8 to make adjustments, which can be accomplished through a controller or other structure. This is a conventional setting and is known to those skilled in the art, so it will not be described in detail here.

[0103] The temperature detection component 9 allows the fresh air introduction component 8 to more flexibly adjust the temperature in the test chamber 2, improving the timeliness of the adjustment and further promoting the uniform setting of the temperature field in each area of ​​the test chamber 2.

[0104] See Figure 2 In this embodiment, the air supply pipe 82 is provided with at least two air outlets 821 that are evenly distributed along the length of the air-cooled chiller unit 3.

[0105] The temperature detection component 9 includes at least two temperature detection elements 91 that are evenly distributed along the length of the air-cooled chiller unit 3.

[0106] Optionally, all air outlets 821 are horizontally oriented towards the air-cooled chiller unit 3.

[0107] Optionally, all temperature sensing elements 91 are horizontally oriented towards the air supply duct 82.

[0108] Optionally, the length of the air supply duct 82 is parallel to the length of the air-cooled chiller unit 3.

[0109] Optionally, the number of air outlets 821 is the same as the number of temperature sensors 91, and each temperature sensor 91 is directly opposite to each air outlet 821.

[0110] The increased number of air outlets 821 further facilitates the uniform setting of the temperature field in each area of ​​the test chamber 2.

[0111] Multiple temperature sensors 91 are provided, which further promotes the uniform setting of temperature field in each area of ​​the test chamber 2. The number and position of temperature sensors 91 are adjusted according to the number and position of air outlets 821.

[0112] Temperature detection element 91 is an existing configuration, such as a thermocouple, temperature sensor, sampling valve, or thermocouple combined with sampling valve, which is known to those skilled in the art and will not be described in detail here.

[0113] The installation of temperature sensing element 91 is a standard setting and will not be described in detail here.

[0114] See Figure 2 In this embodiment, the number of temperature detection elements 91 is equal to the sum of the number of air outlets 821 and the number of air inlets;

[0115] In the width direction of the air-cooled chiller unit 3, the projections of each air outlet 821 on any air supply duct 82 and the projections of each temperature detection element 91 in any temperature detection assembly 9 are staggered.

[0116] This embodiment is more suitable for situations where the number of air outlets 821 and the number of temperature sensing elements 91 are relatively small. It can reduce the number of air outlets 821 that need to be installed, thereby reducing the number of air outlet valves 84, etc., and further reducing costs. Alternatively, the number of air outlets 821 can be increased to improve precise control and temperature uniformity.

[0117] See Figure 2Taking a single air supply duct 82 with two air outlets 821 and a single temperature detection assembly 9 including three temperature sensors 91 as an example: In this case, the middle temperature sensor is located in the central area of ​​the test chamber 2, while the other temperature sensors 91 are located in or near the edge of the test chamber 2. The two air outlets 821 are respectively positioned between the other temperature sensors 91 and the middle temperature sensor (referring to the above projection). If the temperature of the middle temperature sensor (the second temperature sensor from the left) is lower than the set temperature, since the middle temperature sensor is centrally located and the air outlet 821 has a small opening, the air inlet valve 83 is directly operated, causing the air inlet valve... The opening of valve 83 is reduced when the temperature is higher than the set temperature, and the opening of valve 83 is increased when the temperature is higher than the set temperature. This allows for temperature adjustment in multiple areas within test chamber 2 and accelerates the adjustment process. If there is a temperature deviation between the two temperature sensors (e.g., a temperature difference greater than 3°C), the corresponding outlet valve 84 can be adjusted. For example, if the temperature of the first temperature sensor on the left is higher than that of the third temperature sensor on the left, the opening of the corresponding second outlet valve 84 on the left can be reduced or increased. The adjustment method is reversed when the temperature of the first temperature sensor on the left is lower than that of the third temperature sensor on the left. The operation method is similar when there is a temperature difference between the two temperature sensors and the middle temperature sensor. Taking the second temperature sensor on the left as an example, "second from the left" refers to the second one from the left. Both the left and right directions are based on the viewpoint shown in the figure.

[0118] In this embodiment, the air outlet 821 is positioned facing the space where the air-cooled chiller unit 3 is located.

[0119] The temperature control effect is improved by setting it in this embodiment.

[0120] See Figure 2 In this embodiment, a detector 10 is provided at each of the air outlets 821.

[0121] The detector 10 uses an existing anemometer or pressure monitoring point. Based on the detection information from the detector 10, the air volume at the corresponding air outlet 821 is adjusted to ensure that the air volume at each air outlet 821 is consistent.

[0122] The configuration in this embodiment further ensures the uniformity of the temperature field in test chamber 2.

[0123] It should be emphasized that the above-mentioned controls (such as controlling the opening degree of the air outlet valve 84 based on the detection information of the detector 10) can all be implemented using existing control devices, which are conventional technologies and well known to those skilled in the art, and will not be described in detail here.

[0124] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fresh air introduction device for testing an air conditioner, comprising a test chamber (2) and an air-cooled chiller unit (3), characterized in that: The fresh air introduction device for air conditioner testing includes at least one fresh air introduction component (8), the fresh air introduction component (8) comprising: A blower (81) is used to deliver air from outside the test chamber (2) into the test chamber (2); the test chamber (2) is provided with a vent (21) corresponding to the blower (81). An air supply duct (82) is connected to the blower (81) and serves as a component for guiding the air supplied by the blower (81); the air supply duct (82) has an air inlet communicating with the inner space of the blower (81) and at least one air outlet (821) communicating with the inner space of the test chamber (2). An air inlet valve (83) is provided at the air inlet and serves as a component for adjusting the amount of air intake at the air inlet per unit time. At least one air outlet valve (84) is provided as a component for adjusting the amount of air output at the air outlet (821) per unit time; the air outlet (821) is provided with the air outlet valve (84).

2. The fresh air introduction device for testing an air conditioner according to claim 1, characterized in that: The blower (81) and the air duct (82) are both placed inside the test chamber (2); The blower (81) is attached to the inner surface of the test chamber (2); The size of the vent (21) opening is less than or equal to the cross-sectional size of the blower (81).

3. The fresh air introduction device for testing an air conditioner according to claim 1, characterized in that: The air supply duct (82) is provided with an air supply section (85) for reducing air resistance, and / or the air supply duct (82) is provided with a filter section (86) for filtering impurities in the air.

4. A fresh air introduction device for testing an air conditioner according to any one of claims 1-3, characterized in that: The fresh air introduction component (8) is configured in two parts; Along the width direction of the air-cooled chiller unit (3), the two fresh air introduction components (8) are respectively arranged on the symmetrical sides of the air-cooled chiller unit (3).

5. The fresh air introduction device for testing an air conditioner according to claim 4, characterized in that: Along the width direction of the air-cooled chiller unit (3), temperature detection components (9) are provided on both symmetrical sides of the air-cooled chiller unit (3). The temperature detection components (9) are used to adjust the fresh air introduction components (8) by detecting the temperature of different areas in the test chamber (2).

6. The fresh air introduction device for testing an air conditioner according to claim 5, characterized in that: The air supply pipe (82) is provided with at least two air outlets (821) that are evenly distributed along the length of the air-cooled chiller unit (3). The temperature detection assembly (9) includes at least two temperature detection elements (91) that are evenly distributed along the length of the air-cooled chiller unit (3).

7. A fresh air introduction device for testing an air conditioner according to claim 6, characterized in that: The number of temperature sensing elements (91) is equal to the sum of the number of air outlets (821) and the number of air inlets; In the width direction of the air-cooled chiller unit (3), the projections of each air outlet (821) on any air supply pipe (82) and the projections of each temperature detection element (91) in any temperature detection component (9) are staggered.

8. A fresh air introduction device for testing an air conditioner according to any one of claims 1-3, characterized in that: The air outlet (821) is positioned facing the space where the air-cooled chiller unit (3) is located.

9. A fresh air introduction device for testing an air conditioner according to any one of claims 1-3, characterized in that: Each of the air outlets (821) is equipped with a detector (10).

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