A multi-functional enthalpy difference laboratory

Abstract

The present invention discloses a multi-functional enthalpy difference laboratory, which includes: an indoor room, an outdoor room, a spare room, a first compression condensing unit, a second compression condensing unit, a third compression condensing unit, a cooling water tower, a first water distributor, and a second water distributor. A first heat exchanger is provided in the second compression condensing unit, and a second heat exchanger is provided in the third compression condensing unit. The water outlet of the cooling water tower is connected to the cold water inlets of the first compression condensing unit, the second compression condensing unit, and the third compression condensing unit through a water delivery pipe. A water pump is provided at the water outlet of the cooling water tower on the water delivery pipe. The water return port of the cooling water tower is connected to the hot water outlets of the first compression condensing unit, the second compression condensing unit, and the third compression condensing unit through a water return pipe. The first water distributor is connected to the first heat exchanger, and the second water distributor is connected to the second heat exchanger. This enthalpy difference laboratory is not only energy-saving but also can test the performance of different electrical components, greatly meeting the actual needs of users.

Description

Technical Field

[0001] The present invention relates to the technical field of performance testing laboratories for electrical components, and more particularly to a multi-functional enthalpy difference laboratory. Background Art

[0002] An enthalpy difference laboratory is a common laboratory for testing the performance of air conditioners. An enthalpy difference test device is a device that artificially simulates the working environment of one or more test products in a laboratory, and can be used to test the performance of products during operation and develop new products.

[0003] In the layout structure of a traditional enthalpy difference laboratory, the structures and system configurations of the indoor room and the outdoor room are basically the same, and the environmental control systems of the two rooms are separated and independent. Each room has independent compressors, fans, evaporators, humidifiers, electric heaters, condensers, etc. The water-cooling systems of all rooms only share a cooling water tower. The previously widely used equipment system simply discharged the heat energy generated in the laboratory into the environment through the cooling water tower, and the heat energy was not fully utilized. At the same time, the temperature rise in other rooms still required the full operation of electric heating, resulting in high energy consumption in the enthalpy difference laboratory and problems of resource waste. In addition, the traditional enthalpy difference laboratory is only equipped with an experimental room for testing air conditioners and cannot test electrical appliances such as refrigerators and hot and cold water dispensers, making the functionality of the enthalpy difference laboratory relatively single.

[0004] Therefore, how to provide a multi-functional enthalpy difference laboratory with energy conservation and the ability to perform multi-product testing is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a multi-functional enthalpy difference laboratory with energy conservation and the ability to perform multi-product testing.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A multi-functional enthalpy difference laboratory, comprising:

[0008] An indoor room, in which a first air handling unit is provided;

[0009] An outdoor room, which is arranged on one side of the indoor room. A second air handling unit is provided in the outdoor room, and a first heat exchanger is provided in the second air handling unit;

[0010] A spare room, which is arranged on one side of the outdoor room and is arranged away from the indoor room. A third air handling unit is provided in the spare room, and a second heat exchanger is provided in the third air handling unit;

[0011] The first compression and condensation unit is arranged outside the indoor compartment. The refrigerant outlet and inlet of the first compression and condensation unit are respectively connected to the inlet and outlet of the first evaporator in the first air handling unit through the first refrigerant pipeline;

[0012] The second compression and condensation unit is arranged outside the outdoor compartment. The refrigerant outlet and inlet of the second compression and condensation unit are respectively connected to the inlet and outlet of the second evaporator in the second air handling unit through the second refrigerant pipeline;

[0013] The third compression and condensation unit is arranged outside the spare compartment. The refrigerant outlet and inlet of the third compression and condensation unit are respectively connected to the inlet and outlet of the third evaporator in the third air handling unit through the third refrigerant pipeline;

[0014] The cooling water tower. The water outlet of the cooling water tower is connected to the cold water inlets of the first compression and condensation unit, the second compression and condensation unit, and the third compression and condensation unit through the water delivery pipe. A water pump is provided at the water outlet of the cooling water tower on the water delivery pipe. The water return port of the cooling water tower is connected to the hot water outlets of the first compression and condensation unit, the second compression and condensation unit, and the third compression and condensation unit through the water return pipe;

[0015] The first water flow divider is connected to the water return pipe, and the inlet of the first water flow divider is located on the hot water outlet side of the first compression and condensation unit. The bypass outlet of the first water flow divider is connected to the inlet of the first heat exchanger, and the outlet of the first heat exchanger is connected to the water return pipe through the first pipeline;

[0016] The second water flow divider is connected to the water return pipe, and the inlet of the second water flow divider is located on the outlet side of the first heat exchanger. The bypass outlet of the second water flow divider is connected to the inlet of the second heat exchanger, and the outlet of the second heat exchanger is connected to the water return pipe through the second pipeline.

[0017] As can be seen from the above technical solutions, compared with the prior art, the present invention discloses a multi-functional enthalpy difference laboratory. When in use, a water pump pumps the cold water from the cooling water tower to the first compression condensing unit, the second compression condensing unit, and the third compression condensing unit. The cold water exchanges heat with the refrigerant in the compression unit, and the cold water becomes hot water and flows out through the return pipe. The corresponding refrigerant becomes a low-temperature and high-pressure liquid and enters the first evaporator, the second evaporator, and the third evaporator through the first refrigerant pipeline, the second refrigerant pipeline, and the third refrigerant pipeline respectively, providing a refrigeration function for the corresponding air handling units. The hot water flowing out of the first compression condensing unit enters the first water diverter. After being diverted, a part of it flows into the first heat exchanger, and the heat is transferred to the outdoor room through the first heat exchanger, making full use of the heat discharged from the indoor side, thereby reducing the power consumption of the second air handling unit on the outdoor side. Similarly, the heat in the outdoor room is transferred to the standby room through the second heat exchanger, which can reduce the power consumption of the third air handling unit in the standby room. Moreover, through the first water diverter and the second water diverter, the water flow rate flowing into the corresponding rooms can be automatically distributed, so as to realize different application scenarios such as slow heating, rapid heating, and stable state maintenance in the corresponding rooms. In addition, the standby room can be used as a room for testing electrical appliances such as refrigerators and hot and cold water dispensers, enabling the enthalpy difference laboratory to not only test the performance of air conditioners but also test other electrical components at the same time, greatly improving the versatility of the enthalpy difference laboratory. Therefore, the enthalpy difference laboratory is not only energy-saving but also can test the performance of different electrical components, greatly meeting the actual needs of users.

[0018] Further, a first check valve for the water flow in the first heat exchanger to flow to the return pipe is provided on the first pipeline, and a second check valve for the water flow in the second heat exchanger to flow to the return pipe is provided on the second pipeline.

[0019] The beneficial effect of adopting the above technical solution is that only the water flowing out of the first heat exchanger and the second heat exchanger can flow into the return pipe, preventing the hot water in the return pipe from flowing back into the first pipeline and the second pipeline, that is, realizing the function of one-way water flow in the first pipeline and the second pipeline, and ensuring the smooth return of water in the first heat exchanger and the second heat exchanger.

[0020] Further, a standby test bench is provided in the indoor room or / and the outdoor room or / and the standby room.

[0021] The beneficial effect of adopting the above technical solution is that the standby test bench can test electrical appliances such as refrigerators and hot and cold water dispensers, realizing the free conversion of the room test function and improving the convenience of use of the enthalpy difference laboratory.

[0022] Further, a sampling device for parameter sampling and a wind tunnel device for measuring wind speed are provided in both the indoor room and the outdoor room.

[0023] Further, it further includes a controller, and the controller is electrically connected to the first air handling unit, the second air handling unit, the third air handling unit, the first compression condensing unit, the second compression condensing unit, the third compression condensing unit, the water pump, the first water flow divider, the second water flow divider, the sampling device, and the wind tunnel device.

[0024] Further, electric heaters, variable-frequency fans, and humidifiers are provided in the first air handling unit, the second air handling unit, and the third air handling unit, and the electric heaters, the variable-frequency fans, and the humidifiers are all electrically connected to the controller.

[0025] The beneficial effects of adopting the above technical solutions are as follows: intelligent control is carried out through the controller, that is, according to parameters such as the current temperature and humidity in the room where heat is introduced, the set target temperature and humidity in the room, and the water temperature in the water pipe, the controller performs dynamic calculations to adjust the water flow rates flowing into the room by the first water flow divider and the second water flow divider. At the same time, the controller will adjust the input power of the electric heater in the room and the refrigeration input of the environmental control system according to the working condition expectation adjustment time set by the user in the system, so as to intelligently realize different application scenarios such as slow temperature rise, rapid temperature rise, and stable state maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0027] Figure 1 The attached drawing is a schematic structural diagram of a multifunctional enthalpy difference laboratory provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] See Figure 1 , the embodiment of the present invention discloses a multifunctional enthalpy difference laboratory, including:

[0030] An indoor room 1, and a first air handling unit 2 is provided in the indoor room 1;

[0031] An outdoor room 3 is provided on one side of the indoor room 1. A second air handling unit 4 is provided in the outdoor room 3, and a first heat exchanger 5 is provided in the second air handling unit 4;

[0032] A spare room 6 is provided on one side of the outdoor room 3 and is arranged far from the indoor room 1. A third air handling unit 7 is provided in the spare room 6, and a second heat exchanger 8 is provided in the third air handling unit 7;

[0033] A first compression condensing unit 9 is provided outside the indoor room 1. The refrigerant outlet and inlet of the first compression condensing unit 9 are respectively connected to the inlet and outlet of the first evaporator 201 in the first air handling unit 2 through a first refrigerant pipeline 10;

[0034] A second compression condensing unit 11 is provided outside the outdoor room 3. The refrigerant outlet and inlet of the second compression condensing unit 11 are respectively connected to the inlet and outlet of the second evaporator 401 in the second air handling unit 4 through a second refrigerant pipeline 12;

[0035] A third compression condensing unit 13 is provided outside the spare room 6. The refrigerant outlet and inlet of the third compression condensing unit 13 are respectively connected to the inlet and outlet of the third evaporator 1301 in the third air handling unit 7 through a third refrigerant pipeline 14;

[0036] A cooling water tower 15. The water outlet of the cooling water tower 15 is connected to the cold water inlets of the first compression condensing unit 9, the second compression condensing unit 11, and the third compression condensing unit 13 through a water delivery pipe 16. A water pump 17 is provided at the water outlet of the cooling water tower 15 on the water delivery pipe 16. The water return port of the cooling water tower 15 is connected to the hot water outlets of the first compression condensing unit 9, the second compression condensing unit 11, and the third compression condensing unit 13 through a water return pipe 18, and electromagnetic on-off valves 32 are provided at corresponding positions on the water delivery pipe 16 and the water return pipe 18;

[0037] A first water flow divider 19 is connected to the water return pipe 18, and the inlet of the first water flow divider 19 is located on the hot water outlet side of the first compression condensing unit 9. The bypass outlet of the first water flow divider 19 is connected to the inlet of the first heat exchanger 5, and the outlet of the first heat exchanger 5 is connected to the water return pipe 18 through a first pipeline 20;

[0038] A second water flow divider 21 is connected to the water return pipe 18, and the inlet of the second water flow divider 21 is located on the outlet side of the first heat exchanger 5. The bypass outlet of the second water flow divider 21 is connected to the inlet of the second heat exchanger 8, and the outlet of the second heat exchanger 8 is connected to the water return pipe 18 through a second pipeline 22.

[0039] The indoor room for air conditioner testing is often used at 24°C, 32°C, etc., the outdoor room for air conditioner testing is often used at 35°C, 43°C, etc., and the spare room for refrigerator testing is often used at 16°C, 25°C, 43°C, etc. The working process of the above solution is as follows: The water pump pumps the cold water from the cooling water tower to the first compression condensation unit, the second compression condensation unit, and the third compression condensation unit. The cold water exchanges heat with the refrigerant in the compression unit. The cold water becomes hot water and flows out through the return pipe, while the corresponding refrigerant becomes a low-temperature and high-pressure liquid and enters the first evaporator, the second evaporator, and the third evaporator through the first refrigerant pipeline, the second refrigerant pipeline, and the third refrigerant pipeline respectively, providing refrigeration function for the corresponding air handling units; The hot water flowing out of the first compression condensation unit enters the first water distributor. After being distributed, a part of it flows into the first heat exchanger, and the heat is transferred to the outdoor room through the first heat exchanger, that is, the heat discharged from the indoor side is fully utilized, thereby reducing the power consumption of the second air handling unit on the outdoor side (the power consumption of the electric heater). Similarly, the heat of the outdoor room is transferred to the spare room through the second heat exchanger, which can reduce the power consumption of the third air handling unit in the spare room (the power consumption of the electric heater). And, through the first water distributor and the second water distributor, the water flow rate flowing into the corresponding rooms can be automatically distributed, so as to realize different application scenarios such as slow heating, rapid heating, and maintaining a stable state in the corresponding rooms. In addition, the spare room can be used as a room for testing electrical appliances such as refrigerators and hot and cold water dispensers, so that this enthalpy difference laboratory can not only test the performance of air conditioners, but also test other electrical components at the same time, greatly improving the versatility of the enthalpy difference laboratory.

[0040] Preferably, a first check valve 23 for the water flow in the first heat exchanger 5 to flow back to the return pipe 18 is provided on the first pipeline 20, and a second check valve 24 for the water flow in the second heat exchanger 8 to flow back to the return pipe 18 is provided on the second pipeline 22. Therefore, only the water discharged from the first heat exchanger and the second heat exchanger can flow into the return pipe, preventing the hot water in the return pipe from flowing back into the first pipeline and the second pipeline, that is, realizing the function of one-way water flow in the first pipeline and the second pipeline, and ensuring the smooth return of the first heat exchanger and the second heat exchanger.

[0041] In order to improve the versatility of the laboratory, a spare test bench 25 is provided in the indoor room 1 or / and the outdoor room 3 or / and the spare room 6. When considering three rooms, one room is the indoor side of the air conditioner test, one room is the outdoor side of the air conditioner test, and another room is used as a refrigerator laboratory. When the demand for refrigerator testing is large, the three rooms can be changed into three refrigerator laboratories. When considering two rooms, one room is the indoor side of the air conditioner test and one room is the outdoor side of the air conditioner test. When there is a demand for refrigerator testing, both rooms can be changed into two refrigerator laboratories. This makes the enthalpy difference laboratory not only energy-saving, but also can be comprehensively utilized, improving the utilization rate of the laboratory and reducing the overall investment of the laboratory.

[0042] In this embodiment, sampling devices 26 for parameter sampling and wind tunnel devices 27 for measuring wind speed are provided in both the indoor compartment 1 and the outdoor compartment 3.

[0043] In another embodiment, the multi-functional enthalpy difference laboratory further includes a controller 28, and the controller 28 is electrically connected to the first air handling unit 2, the second air handling unit 4, the third air handling unit 7, the first compression condensing unit 9, the second compression condensing unit 11, the third compression condensing unit 13, the water pump 17, the first water flow divider 19, the second water flow divider 21, the sampling device 26, and the wind tunnel device 27.

[0044] Electric heaters 29, variable frequency fans 30, and humidifiers 31 are provided in the first air handling unit 2, the second air handling unit 4, and the third air handling unit 7, and the electric heaters 29, variable frequency fans 30, and humidifiers 31 are all electrically connected to the controller 28.

[0045] In the laboratory, the water pump and the compression condensing unit can adopt a variable frequency form, which helps to reduce energy consumption; and spoiler orifice plates can be installed at the air outlets of the first air handling unit, the second air handling unit, and the third air handling unit, so that the air flow can circulate evenly in the room, ensuring the uniformity of the room temperature and the temperature gradient in the vertical direction.

[0046] Therefore, the enthalpy difference laboratory is intelligently controlled by the controller. That is, according to parameters such as the current temperature and humidity conditions of the heat entering the room, the set target temperature and humidity of the room, and the water temperature in the water pipe, the controller performs dynamic calculations to adjust the water flow rates flowing into the room by the first water flow divider and the second water flow divider. At the same time, the controller will adjust the input power of the electric heater in the room and the refrigeration input of the environmental control system according to the working condition expectation adjustment time set by the user in the system, so as to intelligently realize different application scenarios such as slow temperature rise, fast temperature rise, and stable state maintenance.

[0047] By adding heat exchangers, the multi-functional enthalpy difference laboratory enables the higher temperature environment room to make full use of the condensation heat discharged during the refrigeration of the lower temperature experimental room, and the water flow is divided through the water flow divider to other rooms, thereby providing heat for this room, reducing the power consumption of the electric heater in this room, and achieving an energy-saving effect; and the provided spare rooms and spare test benches can meet the detection needs of multiple products; in addition, the structure of the enthalpy difference laboratory is compact and the layout is reasonable, which can reduce the overall investment of the laboratory, realize the comprehensive utilization of the laboratory, and improve the utilization rate of the laboratory.

[0048] In the present specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For related parts, reference can be made to the description in the method part.

[0049] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-functional enthalpy difference laboratory, characterized in that, Comprising: An indoor room (1) with a first air handling unit (2) installed therein; An outdoor room (3) arranged on one side of the indoor room (1), with a second air handling unit (4) installed in the outdoor room (3), and a first heat exchanger (5) installed in the second air handling unit (4); A spare room (6) arranged on one side of the outdoor room (3) and away from the indoor room (1), with a third air handling unit (7) installed in the spare room (6), and a second heat exchanger (8) installed in the third air handling unit (7); A first compression condensing unit (9) arranged outside the indoor room (1), with the refrigerant outlet and inlet of the first compression condensing unit (9) respectively connected to the inlet and outlet of a first evaporator (201) in the first air handling unit (2) through a first refrigerant pipeline (10); A second compression condensing unit (11) arranged outside the outdoor room (3), with the refrigerant outlet and inlet of the second compression condensing unit (11) respectively connected to the inlet and outlet of a second evaporator (401) in the second air handling unit (4) through a second refrigerant pipeline (12); A third compression condensing unit (13) arranged outside the spare room (6), with the refrigerant outlet and inlet of the third compression condensing unit (13) respectively connected to the inlet and outlet of a third evaporator (1301) in the third air handling unit (7) through a third refrigerant pipeline (14); A cooling water tower (15), with the water outlet of the cooling water tower (15) connected to the cold water inlets of the first compression condensing unit (9), the second compression condensing unit (11), and the third compression condensing unit (13) through a water delivery pipe (16). A water pump (17) is provided at the water outlet of the cooling water tower (15) on the water delivery pipe (16), and the water return port of the cooling water tower (15) is connected to the hot water outlets of the first compression condensing unit (9), the second compression condensing unit (11), and the third compression condensing unit (13) through a water return pipe (18); A first water distributor (19) connected to the water return pipe (18), with the inlet of the first water distributor (19) located on the hot water outlet side of the first compression condensing unit (9). The bypass outlet of the first water distributor (19) is connected to the inlet of the first heat exchanger (5), and the outlet of the first heat exchanger (5) is connected to the water return pipe (18) through a first pipeline (20); A second water flow divider (21), the second water flow divider (21) is connected to the return water pipe (18), and the inlet of the second water flow divider (21) is located on the outlet side of the first heat exchanger (5). The bypass outlet of the second water flow divider (21) is connected to the inlet of the second heat exchanger (8), and the outlet of the second heat exchanger (8) is connected to the return water pipe (18) through a second pipeline (22); Sampling devices (26) for parameter sampling and wind tunnel devices (27) for measuring wind speed are provided in both the indoor compartment (1) and the outdoor compartment (3); It further includes a controller (28), and the controller (28) is electrically connected to the first air handling unit (2), the second air handling unit (4), the third air handling unit (7), the first compression and condensation unit (9), the second compression and condensation unit (11), the third compression and condensation unit (13), the water pump (17), the first water flow divider (19), the second water flow divider (21), the sampling device (26), and the wind tunnel device (27).

2. A multifunctional enthalpy difference laboratory according to claim 1, wherein A first check valve (23) for the water flow in the first heat exchanger (5) to flow to the return water pipe (18) is provided on the first pipeline (20), and a second check valve (24) for the water flow in the second heat exchanger (8) to flow to the return water pipe (18) is provided on the second pipeline (22).

3. A multifunctional enthalpy difference laboratory according to claim 1 or 2, characterized in that, A spare test bench (25) is provided in the indoor compartment (1) or / and the outdoor compartment (3) or / and the spare compartment (6).

4. A multifunctional enthalpy difference laboratory according to claim 1, characterized in that, Electric heaters (29), variable frequency fans (30), and humidifiers (31) are provided in the first air handling unit (2), the second air handling unit (4), and the third air handling unit (7), and the electric heaters (29), the variable frequency fans (30), and the humidifiers (31) are all electrically connected to the controller (28).

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