Humidifier Humidification Capacity Testing Device and Testing Method

Abstract

The present invention provides a humidification capacity testing device for a humidifier. The testing device is used to test the humidifier to be tested and includes an environmental temperature adjustment box, a first heat exchange component, and a second heat exchange component arranged in the environmental temperature adjustment box. The first heat exchange component includes a container, a first heat exchange tube, and a second heat exchange tube. The container contains a first liquid heat exchange medium. At least part of the first heat exchange tube is arranged in the container. The first heat exchange tube is used for passing gas through it. The second heat exchange tube is used for passing the first liquid heat exchange medium through it. The gas can exchange heat with the first liquid heat exchange medium through the first heat exchange tube. The first heat exchange tube is connected to the humidifier to be tested, and the gas can be input into the humidifier to be tested through the first heat exchange tube. The second heat exchange component is used to exchange heat with the first liquid heat exchange medium in the second heat exchange tube. This solution can not only ensure that the flow rate of the gas input into the humidifier to be tested is not restricted, but also ensure the precise control of the temperature of the gas input into the humidifier to be tested.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device detection, and particularly to a humidification capacity testing device and a testing method for a humidifier. Background Art

[0002] The humidifier to be tested is a medical device that adds moisture to the inhaled gas of patients in the respiratory department, mainly used to keep the respiratory tract of patients moist and reduce the damage that may be caused by respiratory tract dryness when patients use a ventilator for a long time or have respiratory insufficiency. Therefore, the humidification capacity and heat energy output safety of the humidifier are the core technical indicators for evaluating the quality of the humidifier to be tested.

[0003] In the related art, for example, a patent with the application number 201510248962.3 discloses a humidification capacity testing device for a humidifier. This testing device can separately adjust the ambient temperature and the temperature of the gas input into the humidifier to be tested, and solves the problem that the required gas temperature during testing may deviate from the ambient temperature.

[0004] However, the adjustment of the temperature of the gas input into the humidifier to be tested by this humidification capacity testing device for a humidifier is achieved by heat exchange between the spiral tube in the gas temperature buffer box and the air. Due to the limitation of the heat exchange chamber capacity of the gas temperature buffer box, it may cause a certain limitation on the flow range of the gas input into the humidifier to be tested; in addition, due to the small heat capacity of the gas and the large thermal inertia generated by the heating element, when the compressor or heater is turned on or off, the temperature fluctuation range of the gas in the heat exchange chamber may be relatively large (generally about ±2 degrees), which is not conducive to the precise control of the temperature of the gas input into the humidifier to be tested. Summary of the Invention

[0005] The embodiments of the present invention provide a humidification capacity testing device and a testing method for a humidifier, which can not only ensure that the flow rate of the gas input into the humidifier to be tested is not restricted, but also ensure the precise control of the temperature of the gas input into the humidifier to be tested.

[0006] In a first aspect, the embodiments of the present invention provide a humidification capacity testing device for a humidifier, which is used to test the humidifier to be tested. The humidification capacity testing device for a humidifier includes an ambient temperature adjustment box and a first heat exchange component and a second heat exchange component disposed in the ambient temperature adjustment box;

[0007] The first heat exchange component includes a container, a first heat exchange tube, and a second heat exchange tube. The container contains a first liquid heat exchange medium. At least part of the first heat exchange tube is disposed in the container. The first heat exchange tube is for passing a gas through it. The second heat exchange tube is for passing the first liquid heat exchange medium through it. The gas can exchange heat with the first liquid heat exchange medium through the first heat exchange tube. The first heat exchange tube is connected to the humidifier to be tested, and the gas can be input into the humidifier to be tested through the first heat exchange tube.

[0008] The second heat exchange component is used to exchange heat with the first liquid heat exchange medium in the second heat exchange tube.

[0009] In a possible implementation, the second heat exchange component includes a thermoelectric cooler, which is used to exchange heat with the first liquid heat exchange medium in the second heat exchange tube.

[0010] In a possible implementation, the second heat exchange component further includes a first heat exchange block, which is attached to the thermoelectric cooler.

[0011] The first heat exchange block has a first cavity, and the second heat exchange tube communicates with the first cavity.

[0012] In a possible implementation, the number of thermoelectric coolers is two. The first heat exchange block is disposed between the two thermoelectric coolers and is respectively attached to the two thermoelectric coolers. The end faces of the two thermoelectric coolers attached to the first heat exchange block are both cooling surfaces or heating surfaces.

[0013] In a possible implementation, the second heat exchange component further includes two second heat exchange blocks. Each thermoelectric cooler is attached to one second heat exchange block, and the thermoelectric cooler is disposed between the first heat exchange block and the second heat exchange block.

[0014] In a possible implementation, the second heat exchange component further includes:

[0015] A third heat exchange tube. The second heat exchange block has a second cavity, and the third heat exchange tube communicates with the second cavity. The third heat exchange tube is for passing a second liquid heat exchange medium through it. The third heat exchange tube has a plurality of bent sections connected in sequence.

[0016] A fan, which is disposed on one side of the bent section.

[0017] In a possible implementation, both the first heat exchange tube and the second heat exchange tube are made of a metal material, and the first heat exchange tube disposed in the container is in a spiral shape.

[0018] In a possible implementation, the humidifier humidification capacity testing device further includes an air compressor, which is disposed outside the environmental temperature adjustment box, and the air compressor is connected to one end of the first heat exchange tube.

[0019] In a possible implementation, the humidifier humidification capacity testing device further includes:

[0020] A flow regulating valve for regulating the flow rate of the gas input into the humidifier to be tested;

[0021] A flow meter for measuring the flow rate of the gas input into the humidifier to be tested.

[0022] In a possible implementation, the humidifier humidification capacity testing device further includes:

[0023] A balance, on which the humidifier to be tested is placed;

[0024] A temperature sensor, which is disposed in the container and contacts the first liquid heat exchange medium.

[0025] In a second aspect, an embodiment of the present invention provides a testing method based on the above-mentioned humidifier humidification capacity testing device, including:

[0026] Determine the set conditions, where the set conditions include the set environmental temperature of the environmental temperature adjustment box, the set intake air temperature of the gas input into the humidifier to be tested, and the set intake air flow rate of the gas input into the humidifier to be tested;

[0027] Inject water into the humidifier to be tested and weigh the humidifier to be tested;

[0028] Measure the temperature of the gas input into the humidifier to be tested, measure the flow rate of the gas input into the humidifier to be tested, and start the test under the conditions of the set environmental temperature, the set intake air temperature, and the set intake air flow rate;

[0029] After a set period of time, stop the test, and record the mass of the humidifier to be tested at this time, the volume of the gas input into the humidifier to be tested, and the temperature of the gas input into the humidifier to be tested;

[0030] Calculate the humidification capacity of the humidifier to be tested under the set conditions according to the mass of the humidifier to be tested before starting the test, the mass of the humidifier to be tested after stopping the test, the volume of the gas input into the humidifier to be tested, and the temperature of the gas input into the humidifier to be tested.

[0031] As can be seen from the above technical solution, the first heat exchange component includes a container, a first heat exchange tube, and a second heat exchange tube. The container contains a first liquid heat exchange medium. At least part of the first heat exchange tube is disposed in the container. The first heat exchange tube is for passing a gas, and the second heat exchange tube is for passing the first liquid heat exchange medium. The gas can exchange heat with the first liquid heat exchange medium through the first heat exchange tube. By using the method of heat exchange between the first liquid heat exchange medium and the gas in the first heat exchange tube, compared with the method of heat exchange through air, the heat exchange efficiency can be significantly improved, so that the gas flow rate that can be processed can be larger, and the temperature fluctuation of the gas in the first heat exchange tube is smaller, so as to accurately control the temperature of the gas input into the humidifier to be tested. Furthermore, the above technical solution can not only ensure that the gas flow rate input into the humidifier to be tested is not restricted, but also ensure the accurate control of the temperature of the gas input into the humidifier to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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 some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 is a schematic structural diagram of a humidification capacity testing device for a humidifier provided by an embodiment of the present invention;

[0034] Figure 2 is a schematic structural diagram of a first heat exchange component and a second heat exchange component provided by an embodiment of the present invention;

[0035] Figure 3 is a schematic structural diagram of a first heat exchange component and a second heat exchange component provided by another embodiment of the present invention;

[0036] Figure 4 is a schematic structural diagram of a first heat exchange component and a second heat exchange component provided by still another embodiment of the present invention;

[0037] Figure 5 is a schematic structural diagram of a first heat exchange component and a second heat exchange component provided by yet another embodiment of the present invention;

[0038] Figure 6 is Figure 5 a schematic structural diagram of the second heat exchange component after removing the third heat exchange tube and the fan;

[0039] Figure 7 is a flowchart of a method for testing the humidification capacity of a humidifier provided by an embodiment of the present invention.

[0040] Reference Signs:

[0041] 1 - Environmental temperature regulation box;

[0042] 2 - First heat exchange component;

[0043] 21 - Container;

[0044] 211 - First liquid heat exchange medium;

[0045] 22 - First heat exchange tube;

[0046] 23 - Second heat exchange tube;

[0047] 3 - Second heat exchange component;

[0048] 31 - Semiconductor refrigeration chip;

[0049] 32 - First heat exchange block;

[0050] 321 - First cavity;

[0051] 322 - First connector;

[0052] 33 - Second heat exchange block;

[0053] 331 - Second cavity;

[0054] 332 - Second connector;

[0055] 34 - Third heat exchange tube;

[0056] 341 - Bent section;

[0057] 35 - Fan;

[0058] 4 - Humidifier to be tested;

[0059] 5 - Air compressor;

[0060] 6 - Flow regulating valve;

[0061] 7 - Flowmeter;

[0062] 8 - Balance;

[0063] 9 - Temperature sensor. Specific implementation mode

[0064] As described above, the humidifier humidification capacity test device disclosed in the patent with the application number 201510248962.3 adjusts the temperature of the gas input into the humidifier to be tested by heat exchange between the spiral tube in the gas temperature buffer box and the air. Due to the limitation of the heat exchange cavity capacity of the gas temperature buffer box, it may cause a certain limitation on the flow range of the gas input into the humidifier to be tested; in addition, due to the small gas heat capacity and large thermal inertia, when the compressor or heater is turned on and off, the temperature fluctuation range of the gas in the heat exchange cavity may be relatively large (generally about ±2 degrees), which is not conducive to the precise control of the temperature of the gas input into the humidifier to be tested.

[0065] Therefore, when a large flow range of gas needs to be input into the humidifier to be tested, on the one hand, the gas input into the humidifier to be tested may not reach the set temperature, and on the other hand, it may cause errors in the test of the humidification capacity of the humidifier.

[0066] In the embodiment of the present invention, the humidifier humidification capacity test device includes an ambient temperature adjustment box, and further includes a first heat exchange component, a second heat exchange component and a humidifier to be tested arranged in the ambient temperature adjustment box; the first heat exchange component includes a container, a first heat exchange tube and a second heat exchange tube, the container contains a first liquid heat exchange medium, at least part of the first heat exchange tube is arranged in the container, the first heat exchange tube is used for passing gas, the second heat exchange tube is used for passing the first liquid heat exchange medium, and the gas can exchange heat with the first liquid heat exchange medium through the first heat exchange tube; the second heat exchange component is used for exchanging heat with the first liquid heat exchange medium in the second heat exchange tube. The humidifier humidification capacity test device provided by the above technical solution adopts the method of exchanging heat between the first liquid heat exchange medium and the gas in the first heat exchange tube. Compared with the method of exchanging heat through air, the heat exchange efficiency can be significantly improved, so that the processable gas flow can be larger, and the temperature fluctuation of the gas in the first heat exchange tube is smaller, so as to precisely control the temperature of the gas input into the humidifier to be tested. Furthermore, the above technical solution can not only ensure that the gas flow input into the humidifier to be tested is not restricted, but also ensure the precise control of the temperature of the gas input into the humidifier to be tested.

[0067] The following will describe in detail the humidifier humidification capacity test device provided by the embodiment of the present invention with reference to the accompanying drawings.

[0068] As Figure 1 and Figure 2 shown, an embodiment of the present invention provides a humidifier humidification capacity test device, which includes an ambient temperature adjustment box 1, and further includes a first heat exchange component 2, a second heat exchange component 3 and a humidifier to be tested 4 arranged in the ambient temperature adjustment box 1, wherein:

[0069] The first heat exchange assembly 2 includes a container 21, a first heat exchange tube 22, and a second heat exchange tube 23. The container 21 contains a first liquid heat exchange medium 211. At least part of the first heat exchange tube 22 is disposed within the container 21. The first heat exchange tube 22 is for passing a gas therethrough, and the second heat exchange tube 23 is for passing the first liquid heat exchange medium 211 therethrough. The gas can exchange heat with the first liquid heat exchange medium 211 through the first heat exchange tube 22.

[0070] The second heat exchange assembly 3 is used to exchange heat with the first liquid heat exchange medium 211 in the second heat exchange tube 23.

[0071] In the embodiment of the present invention, the humidifier humidification capacity testing device adopts the method of exchanging heat between the first liquid heat exchange medium 211 and the gas in the first heat exchange tube 22. Compared with the method of exchanging heat through air, the heat exchange efficiency can be significantly improved, so that the gas flow rate that can be processed can be larger, and the temperature fluctuation of the gas in the first heat exchange tube 22 is smaller, so as to accurately control the temperature of the gas input into the humidifier 4 to be tested. Furthermore, the above technical solution can not only ensure that the gas flow rate input into the humidifier 4 to be tested is not restricted, but also ensure the accurate control of the temperature of the gas input into the humidifier 4 to be tested.

[0072] In some implementation solutions, the first liquid heat exchange medium 211 can be water, and of course it can also be other liquid heat exchange media, which are not specifically limited herein. As Figure 1 shown, the direction of the solid arrow is the direction of gas flow, and the dotted part is the direction of the first liquid heat exchange medium 211 flow.

[0073] In some embodiments, both the first heat exchange tube 22 and the second heat exchange tube 23 are made of metal materials. This is beneficial to the heat exchange between the gas and the first liquid heat exchange medium 211, and is also beneficial to the heat exchange between the first liquid heat exchange medium 211 and the second heat exchange assembly 3. For example, the first heat exchange tube 22 and the second heat exchange tube 23 can be made of metal materials such as copper, aluminum, or steel. Moreover, the first heat exchange tube 22 disposed within the container 21 is in a spiral shape, so that the heat exchange length or heat exchange area of the first heat exchange tube 22 can be increased, thereby enabling the heat exchange between the gas and the first liquid heat exchange medium 211 to be more sufficient. Of course, the first heat exchange tube 22 disposed within the container 21 can also be in other shapes, such as having multiple bent segments, as long as it can ensure sufficient heat exchange between the gas and the first liquid heat exchange medium 211.

[0074] In some embodiments, the humidifier humidification capacity test device further includes a flow regulating valve 6 and a flowmeter 7, where: the flow regulating valve 6 is used to regulate the flow rate of the gas input into the humidifier 4 to be tested, and the flowmeter 7 is used to measure the flow rate of the gas input into the humidifier 4 to be tested. The flow regulating valve 6 can be arranged before the air inlet of the first heat exchange component 2 or between the first heat exchange component 2 and the humidifier 4 to be tested, as long as it can regulate the flow rate of the gas input into the humidifier 4 to be tested. In this embodiment, the flow regulating valve 6 is arranged between the first heat exchange component 2 and the humidifier 4 to be tested. Similarly, the flowmeter 7 can be arranged before the air inlet of the first heat exchange component 2 or between the first heat exchange component 2 and the humidifier 4 to be tested, as long as it can measure the flow rate of the gas input into the humidifier 4 to be tested. In this embodiment, the flowmeter 7 is arranged between the first heat exchange component 2 and the humidifier 4 to be tested.

[0075] In some embodiments, the humidifier humidification capacity test device further includes a balance 8 and a temperature sensor 9, where: the humidifier 4 to be tested is placed on the balance 8, and the temperature sensor 9 is arranged in the container 21 and contacts the first liquid heat exchange medium 211. The change in the mass of water in the humidifier 4 to be tested can be measured by the balance 8, and the temperature sensor 9 is used to monitor the temperature of the first liquid heat exchange medium 211 in real time to characterize the temperature of the gas input into the humidifier 4 to be tested (it can be considered that the two temperatures are the same).

[0076] In some embodiments, the humidifier humidification capacity test device further includes an air compressor 5. The air compressor 5 is arranged outside the ambient temperature regulation box 1, and the air compressor 5 is connected to one end of the first heat exchange tube 22. Placing the air compressor 5 outside the ambient temperature regulation box 1 can greatly reduce the volume of the ambient temperature regulation box 1. Since the embodiment of the present invention uses the method of heat exchange between the first liquid heat exchange medium 211 and the gas in the first heat exchange tube 22, the influence of the temperature of the gas generated by the air compressor 5 can be ignored. That is, when the gas generated by the air compressor 5 is introduced into the first heat exchange component 2, the temperature of the gas can be made consistent with the temperature of the first liquid heat exchange medium 211. However, for the humidifier humidification capacity test device disclosed in the patent with the application number 201510248962.3, since it uses the method of air heat exchange and considers that the heat exchange effect of the air may not be sufficient to always make the temperature of the gas in the heat exchange tube consistent with the air temperature, the air compressor 5 needs to be placed inside the ambient temperature regulation box 1, which undoubtedly is not conducive to reducing the volume of the ambient temperature regulation box 1.

[0077] In some embodiments, such as Figure 2As shown, the second heat exchange component 3 includes a thermoelectric cooler 31, which is used to exchange heat with the first liquid heat exchange medium 211 in the second heat exchange tube 23. The thermoelectric cooler 31 is made of two different semiconductor materials and is powered by a power supply component (not shown in the figure, such as a storage battery). When direct current passes through the electric couple formed by connecting two different semiconductor materials in series, heat can be absorbed and released at both ends of the electric couple respectively, thus achieving the purpose of refrigeration and heating. When the gas in the first heat exchange tube 22 needs to be heated, one end of the second heat exchange tube 23 can be attached to the heating end of the thermoelectric cooler 31; when the gas in the first heat exchange tube 22 needs to be cooled, one end of the second heat exchange tube 23 can be attached to the cooling end of the thermoelectric cooler 31. To ensure that when the first heat exchange component 2 and the second heat exchange component 3 are working, there is no need to change the position of the second heat exchange tube 23, only the current direction of the power supply component needs to be changed, that is, only by attaching the second heat exchange tube 23 to one end of the thermoelectric cooler 31 and changing the current direction of the power supply component, the heating and cooling of the gas in the first heat exchange tube 22 can be achieved. That is to say, only by setting the thermoelectric cooler 31 can the heating and cooling of the gas in the first heat exchange tube 22 be realized.

[0078] In the embodiment of the present invention, using the thermoelectric cooler 31 to replace the coupling of the compressor and the heater in the original scheme can further reduce the volume of the first heat exchange component 2 and the second heat exchange component 3, which is beneficial to reducing the volume of the environmental temperature regulation box 1. That is to say, the environmental temperature regulation box 1 provided by the embodiment of the present invention can greatly reduce its volume compared with the original scheme. For example, the volume of the environmental temperature regulation box 1 can be reduced to one cubic meter, so as to achieve the purpose of testing the humidifier with a small temperature regulation box.

[0079] In addition, the refrigeration scheme of the original scheme also has the following problems: 1) The refrigeration response time of the compressor is long. After the compressor starts, it takes a certain time for the cold source to output, and after shutdown, only the compressor stops, but the cold source will still conduct heat exchange; at the same time, due to the small heat capacity of air, the temperature will continue to drop, and the drop amplitude is large. 2) The influence of the compressor shutdown protection measure during the hot and cold switching. The compressor shutdown protection function restricts the frequent start and stop of the compressor, which is not conducive to the precise control of temperature.

[0080] The above problems can be well solved by adopting the refrigeration and heating scheme of the semiconductor refrigeration sheet 31. Specifically, the semiconductor refrigeration sheet 31 has at least the following advantages: 1) Based on the characteristics of the semiconductor refrigeration sheet, its refrigeration and heating speed response time is fast; 2) The thermal inertia of the semiconductor refrigeration sheet is small, and the residual cold and heat sources have little influence on the first liquid heat exchange medium 211 after the output ends. Therefore, the temperature control of the first liquid heat exchange medium 211 can be controlled very precisely and the fluctuation range is small, that is, the temperature of the gas in the first heat exchange tube 22 can be controlled very precisely and the fluctuation range is small. At the same time, there is no problem of frequent cold and heat switching.

[0081] In some embodiments, as Figure 3 shown, the second heat exchange assembly 3 further includes a first heat exchange block 32, and the first heat exchange block 32 is attached to the semiconductor refrigeration sheet 31; the first heat exchange block 32 has a first cavity 321, and the second heat exchange tube 23 communicates with the first cavity 321. In the embodiment of the present invention, by adding the first heat exchange block 32, the heat exchange between the second heat exchange tube 23 and the semiconductor refrigeration sheet 31 is carried out in the first heat exchange block 32. Specifically, the first liquid heat exchange medium 211 enters the first cavity 321 through the second heat exchange tube 23, and the first liquid heat exchange medium 211 in the first cavity 321 exchanges heat with the semiconductor refrigeration sheet 31. The advantage of this scheme compared with Figure 2 the scheme shown is that: by adding the first heat exchange block 32, the heat exchange area of the first liquid heat exchange medium 211 is increased, so that the heat exchange effect between the semiconductor refrigeration sheet 31 and the first liquid heat exchange medium 211 can be increased.

[0082] In some embodiments, as Figure 4 shown, the number of semiconductor refrigeration sheets 31 is two, the first heat exchange block 32 is arranged between the two semiconductor refrigeration sheets 31 and is respectively attached to the two semiconductor refrigeration sheets 31, and the end faces of the two semiconductor refrigeration sheets 31 attached to the first heat exchange block 32 are both refrigerating surfaces or heating surfaces. In the embodiment of the present invention, by arranging two semiconductor refrigeration sheets 31, compared with Figure 3 the scheme shown, the advantage is that: the heat exchange area of the first heat exchange block 32 is increased, so that the heat exchange effect between the semiconductor refrigeration sheet 31 and the first liquid heat exchange medium 211 can be increased.

[0083] In some embodiments, as Figure 5As shown, the second heat exchange component 3 further includes two second heat exchange blocks 33. Each semiconductor refrigeration sheet 31 is attached to one second heat exchange block 33, and the semiconductor refrigeration sheet 31 is disposed between the first heat exchange block 32 and the second heat exchange block 33. To prevent the heat or cold generated at the end face of each semiconductor refrigeration sheet 31 that is not attached to the first heat exchange block 32 from being transferred to the first heat exchange block 32 through air or its own manufacturing materials, which may lead to poor heat exchange effect of the first heat exchange block 32, it is necessary to consider adding a second heat exchange block 33 to the end face of each semiconductor refrigeration sheet 31 that is not attached to the first heat exchange block 32 to transfer the heat or cold generated at this end face. In the embodiment of the present invention, by providing two second heat exchange blocks 33, compared with Figure 4 The advantage of the shown solution is that it increases the dissipation of the heat or cold generated at the end face of the semiconductor refrigeration sheet 31 that is not attached to the first heat exchange block 32, thereby preventing the heat or cold generated at this end face from affecting the heat exchange effect of the first heat exchange block 32.

[0084] In some embodiments, the second heat exchange component 3 further includes a third heat exchange tube 34 and a fan 35. The second heat exchange block 33 has a second cavity 331. The third heat exchange tube 34 is in communication with the second cavity 331. The third heat exchange tube 34 is used for passing a second liquid heat exchange medium. The third heat exchange tube 34 has a plurality of bent sections 341 connected in sequence. The fan 35 is disposed on one side of the bent section 341. In some implementation solutions, the wind direction of the fan 35 is away from the semiconductor refrigeration sheet 31, so as to prevent the heat or cold of the bent section 341 from affecting the semiconductor refrigeration sheet 31. By providing a plurality of bent sections 341 connected in sequence, the heat exchange area of the third heat exchange tube 34 can be increased, that is, heat dissipation or cold dissipation can be achieved at a plurality of bent sections 341.

[0085] In some implementation solutions, the third heat exchange tube 34 can also be made of a metal material. For example, the third heat exchange tube 34 can be made of a metal material such as copper, aluminum or steel, which is beneficial to the heat dissipation or cold dissipation of the second liquid heat exchange medium in the third heat exchange tube 34. In addition, the second liquid heat exchange medium can be water, and of course it can also be other liquid heat exchange media, which are not specifically limited herein.

[0086] As Figure 6 shown, the first heat exchange block 32 further includes a first connector 322. By providing the first connector 322, it is beneficial to the communication between the second heat exchange tube 23 and the first cavity 321. Similarly, the second heat exchange block 33 further includes a second connector 332. By providing the second connector 332, it is beneficial to the communication between the third heat exchange tube 34 and the second cavity 331.

[0087] In addition, as Figure 7The embodiment of the present invention also provides a test method based on a humidifier humidification capacity test device, and the humidifier humidification capacity test device mentioned above can be tested by using this test method. The humidifier humidification capacity test method includes the following steps:

[0088] S1. Determine the set conditions, where the set conditions include the set ambient temperature of the environmental temperature adjustment box 1, the set intake air temperature of the gas input into the humidifier 4 to be tested, and the set intake air flow rate of the gas input into the humidifier 4 to be tested;

[0089] For example, the adjustment range of the ambient temperature of the environmental temperature adjustment box 1 is 5°C to 40°C. The temperature of the gas input into the humidifier 4 to be tested, that is, the temperature of the first liquid heat exchange medium 211 in the first heat exchange component 2, has an adjustment range of 16°C to 30°C. The adjustment range of the intake air flow rate of the gas input into the humidifier 4 to be tested is 0 L / min to 30 L / min. To ensure that the humidification capacity of the humidifier 4 to be tested can be comprehensively tested, the test can be carried out under the following eight set conditions:

[0090] 1) The lowest ambient temperature, the lowest intake air temperature, and the lowest intake air flow rate;

[0091] 2) The lowest ambient temperature, the lowest intake air temperature, and the highest intake air flow rate;

[0092] 3) The lowest ambient temperature, the highest intake air temperature, and the lowest intake air flow rate;

[0093] 4) The lowest ambient temperature, the highest intake air temperature, and the highest intake air flow rate;

[0094] 5) The highest ambient temperature, the lowest intake air temperature, and the lowest intake air flow rate;

[0095] 6) The highest ambient temperature, the lowest intake air temperature, and the highest intake air flow rate;

[0096] 7) The highest ambient temperature, the highest intake air temperature, and the lowest intake air flow rate;

[0097] 8) The highest ambient temperature, the highest intake air temperature, and the highest intake air flow rate.

[0098] S2. Inject water into the humidifier 4 to be tested and weigh the humidifier 4 to be tested;

[0099] Inject a certain amount of water into the humidifier 4 to be tested, and record the weight m0 of the humidifier 4 to be tested at this time.

[0100] S3. Measure the temperature of the gas input into the humidifier 4 to be tested, measure the flow rate of the gas input into the humidifier 4 to be tested, and start the test under the conditions of the set ambient temperature, the set intake air temperature, and the set intake air flow rate; among them, measuring the temperature of the gas input into the humidifier 4 to be tested includes:

[0101] Gas is introduced into the first heat exchange tube 22, and the gas is heat-exchanged by the first liquid heat exchange medium 211.

[0102] The first liquid heat exchange medium 211 in the container 21 is heat-exchanged with the second heat exchange assembly 3 through the second heat exchange tube 23.

[0103] Measure the temperature of the first liquid heat exchange medium 211 in the container 21, and use the temperature of the first liquid heat exchange medium 211 as the inlet gas temperature of the gas input into the humidifier 4 to be tested.

[0104] As described above, the temperature T of the first liquid heat exchange medium 211 can be measured by the temperature sensor 9 to represent the temperature of the gas input into the humidifier 4 to be tested; for example, the flow rate q of the gas input into the humidifier 4 to be tested can be measured by the flow meter 7, and the test is started under the conditions of the set ambient temperature, the set inlet gas temperature, and the set inlet gas flow rate in one of the above eight set conditions.

[0105] S4. After a set period of time, stop the test, and record the mass of the humidifier 4 to be tested at this time, the volume of the gas input into the humidifier 4 to be tested, and the temperature of the gas input into the humidifier 4 to be tested.

[0106] After a set period of time t, stop the test, and record the mass m1 of the humidifier to be tested at this time, the volume V of the gas input into the humidifier to be tested, and the temperature T of the gas input into the humidifier to be tested, where V = q * t.

[0107] S5. Calculate the humidification capacity of the humidifier 4 to be tested under the set conditions according to the mass of the humidifier 4 to be tested before the start of the test, the mass of the humidifier 4 to be tested after the stop of the test, the volume of the gas input into the humidifier 4 to be tested, and the temperature of the gas input into the humidifier 4 to be tested.

[0108] Specifically, the humidification capacity n BTPS is calculated using the following formula:

[0109]

[0110] where: m2 = m0 - m1, m0 represents the mass of the humidifier 4 to be tested before the start of the test, m1 represents the mass of the humidifier 4 to be tested after the stop of the test, V represents the volume of the gas input into the humidifier 4 to be tested, T represents the temperature of the gas input into the humidifier 4 to be tested, and n BTPS represents the humidification capacity of the humidifier 4 to be tested under the set conditions.

[0111] In summary, the humidifier humidification capacity test device provided by each of the present inventions has at least the following beneficial effects:

[0112] 1. In the embodiment of the present invention, the humidification capacity test device of the humidifier uses the method of heat exchange between the first liquid heat exchange medium 211 and the gas in the first heat exchange tube 22. Compared with the method of heat exchange through air, the heat exchange efficiency can be significantly improved, so that the gas flow that can be processed can be larger, and the temperature fluctuation of the gas in the first heat exchange tube 22 is smaller, so as to accurately control the temperature of the gas input into the humidifier 4 to be tested. Furthermore, the above technical solution can not only ensure that the gas flow input into the humidifier 4 to be tested is not restricted, but also ensure the accurate control of the temperature of the gas input into the humidifier 4 to be tested.

[0113] 2. In the embodiment of the present invention, using the thermoelectric cooler 31 to replace the coupling of the compressor and the heater in the original scheme can further reduce the volume of the first heat exchange component 2 and the second heat exchange component 3, which is beneficial to reducing the volume of the environmental temperature adjustment box 1. That is to say, the environmental temperature adjustment box 1 provided by the embodiment of the present invention can greatly reduce its volume compared with the original scheme. For example, the volume of the environmental temperature adjustment box 1 can be reduced to one cubic meter, so as to achieve the purpose of testing the humidifier with a small temperature adjustment box.

[0114] 3. In the embodiment of the present invention, the thermoelectric cooler 31 has at least the following advantages: 1) Based on the characteristics of the thermoelectric cooler, its response time for refrigeration and heating is fast; 2) The thermoelectric cooler has small thermal inertia, and the residual cold and heat sources have little influence on the first liquid heat exchange medium 211 after the output ends. Therefore, the temperature control of the first liquid heat exchange medium 211 can be controlled very precisely and the fluctuation range is small, that is, the temperature control of the gas in the first heat exchange tube 22 can be controlled very precisely and the fluctuation range is small, and at the same time, there is no problem of frequent switching between cold and heat.

[0115] 4. In the embodiment of the present invention, by adding the first heat exchange block 32, the heat exchange area of the first liquid heat exchange medium 211 is increased, so that the heat exchange effect between the thermoelectric cooler 31 and the first liquid heat exchange medium 211 can be increased.

[0116] 5. In the embodiment of the present invention, in order to prevent the heat or cold generated at the end face of each thermoelectric cooler 31 that is not in contact with the first heat exchange block 32 from being transferred to the first heat exchange block 32 through air or its own manufacturing material, which may lead to poor heat exchange effect of the first heat exchange block 32, it is necessary to consider adding a second heat exchange block 33 to the end face of each thermoelectric cooler 31 that is not in contact with the first heat exchange block 32 to transfer the heat or cold generated at this end face.

[0117] In the above embodiments, unless otherwise clearly specified and defined, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance; unless otherwise specified or stated, the term "plurality" means two or more; the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0118] In the description of this specification, it should be understood that the orientation terms such as "upper" and "lower" described in the embodiments of the present invention are described from the angles shown in the drawings and should not be construed as limiting the embodiments of the present invention. In addition, in the context, it should also be understood that when it is mentioned that one element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element.

[0119] The present invention has been shown and described in detail above through the drawings and preferred embodiments. However, the present invention is not limited to these disclosed embodiments. Based on the above-mentioned multiple embodiments, those skilled in the art can know that the code review means in the above different embodiments can be combined to obtain more embodiments of the present invention, and these embodiments are also within the protection scope of the present invention.

Claims

1. A humidifier humidification capacity testing device, characterized in that, For testing the humidifier (4) to be measured, the humidifier humidification capacity testing device includes an environmental temperature adjustment box (1) and a first heat exchange component (2) and a second heat exchange component (3) arranged in the environmental temperature adjustment box (1); The first heat exchange component (2) includes a container (21), a first heat exchange tube (22) and a second heat exchange tube (23). The container (21) contains a first liquid heat exchange medium (211). At least part of the first heat exchange tube (22) is arranged in the container (21). The first heat exchange tube (22) is used for passing gas. The second heat exchange tube (23) is used for passing the first liquid heat exchange medium (211). The gas can exchange heat with the first liquid heat exchange medium (211) through the first heat exchange tube (22). The first heat exchange tube (22) is connected to the humidifier (4) to be measured, and the gas can be input into the humidifier (4) to be measured through the first heat exchange tube (22); The second heat exchange component (3) is used for exchanging heat with the first liquid heat exchange medium (211) in the second heat exchange tube (23); Wherein, the second heat exchange component (3) includes a semiconductor refrigeration sheet (31), and the semiconductor refrigeration sheet (31) is used for exchanging heat with the first liquid heat exchange medium (211) in the second heat exchange tube (23); The semiconductor refrigeration sheet (31) is powered by a power supply component; one end of the second heat exchange tube (23) is attached to the refrigerating end of the semiconductor refrigeration sheet (31). By changing the current direction of the power supply component, heating and cooling of the gas in the first heat exchange tube (22) can be realized; The second heat exchange component (3) further includes a first heat exchange block (32), and the first heat exchange block (32) is attached to the semiconductor refrigeration sheet (31); The first heat exchange block (32) has a first cavity (321), and the second heat exchange tube (23) communicates with the first cavity (321); The second heat exchange component (3) further includes two second heat exchange blocks (33). Each semiconductor refrigeration sheet (31) is attached to one of the second heat exchange blocks (33) on the end face not attached to the first heat exchange block (32). The semiconductor refrigeration sheet (31) is arranged between the first heat exchange block (32) and the second heat exchange block (33); The second heat exchange component (3) further includes: A third heat exchange tube (34). The second heat exchange block (33) has a second cavity (331). The third heat exchange tube (34) communicates with the second cavity (331). The third heat exchange tube (34) is used for passing a second liquid heat exchange medium. The third heat exchange tube (34) has a plurality of bent sections (341) connected in sequence; A fan (35) is arranged on one side of the bent section (341).

2. The humidifier humidification capacity testing device according to claim 1, characterized in that, The number of the semiconductor refrigeration chips (31) is two. The first heat exchange block (32) is arranged between the two semiconductor refrigeration chips (31) and is in contact with the two semiconductor refrigeration chips (31) respectively. The end faces of the two semiconductor refrigeration chips (31) in contact with the first heat exchange block (32) are both refrigerating faces or heating faces.

3. The humidifier humidification capacity testing device according to claim 1, characterized in that, Both the first heat exchange tube (22) and the second heat exchange tube (23) are made of metal materials, and the first heat exchange tube (22) arranged in the container (21) is in a spiral shape.

4. The humidifier humidification capacity testing device according to any one of claims 1-3, characterized in that, The humidifier humidification capacity testing device further includes an air compressor (5). The air compressor (5) is arranged outside the ambient temperature adjustment box (1), and the air compressor (5) is connected to one end of the first heat exchange tube (22).

5. A testing method based on the humidifier humidification capacity testing device according to any one of claims 1-4, characterized in that, Including: S1. Determine the set conditions, where the set conditions include the set ambient temperature of the ambient temperature adjustment box (1), the set intake air temperature of the gas input into the humidifier under test (4), and the set intake air flow rate of the gas input into the humidifier under test (4); S2. Inject water into the humidifier under test (4) and weigh the humidifier under test (4); S3. Measure the temperature of the gas input into the humidifier under test (4) and measure the flow rate of the gas input into the humidifier under test (4), and start the test under the conditions of the set ambient temperature, the set intake air temperature, and the set intake air flow rate; where the measurement of the temperature of the gas input into the humidifier under test (4) includes: Pass gas into the first heat exchange tube (22) and exchange heat for the gas by using the first liquid heat exchange medium (211); Enable the first liquid heat exchange medium (211) in the container (21) to exchange heat with the second heat exchange assembly (3) through the second heat exchange tube (23); Measure the temperature of the first liquid heat exchange medium (211) in the container (21) and use the temperature of the first liquid heat exchange medium (211) as the intake air temperature of the gas input into the humidifier under test (4); S4. Stop the test after a set time period, and record the mass of the humidifier under test (4) after stopping the test, the volume of the gas input into the humidifier under test (4), and the temperature of the gas input into the humidifier under test (4); S5. Calculate the humidification capacity of the humidifier under test (4) under the set conditions according to the mass of the humidifier under test (4) before starting the test, the mass of the humidifier under test (4) after stopping the test, the volume of the gas input into the humidifier under test (4), and the temperature of the gas input into the humidifier under test (4).

6. The humidifier humidification capacity testing method according to claim 5, characterized in that, Calculate the humidification capacity of the humidifier under test (4) under the set conditions according to the following formula: wherein, m2 = m0 - m1, m0 represents the mass of the humidifier (4) to be tested at the start of the test, m1 represents the mass of the humidifier (4) to be tested after the test is stopped, V represents the volume of gas input into the humidifier (4) to be tested, T represents the temperature of the gas input into the humidifier (4) to be tested, and n BTPS represents the humidification capacity of the humidifier (4) to be tested under the set conditions.

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