CN102288444A - Refrigeration system test equipment and method for shortening test time of refrigeration system - Google Patents
Refrigeration system test equipment and method for shortening test time of refrigeration system Download PDFInfo
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- CN102288444A CN102288444A CN2011102490660A CN201110249066A CN102288444A CN 102288444 A CN102288444 A CN 102288444A CN 2011102490660 A CN2011102490660 A CN 2011102490660A CN 201110249066 A CN201110249066 A CN 201110249066A CN 102288444 A CN102288444 A CN 102288444A
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Abstract
The invention provides refrigeration system test equipment, comprising a tank body, a heater and a master controller, wherein the tank body comprises an adiabatic sealed space, the sealed space is cooled by a refrigeration system to be tested; the heater is arranged in the sealed space; the master controller is electrically connected with the heater, and adjusts heating power of the heater to simulate the sealed space into an environment at the designated temperature in the tank body of the refrigeration equipment. The invention also provides a method for shortening test time of the refrigeration system, comprising that: the test equipment of the invention is adopted to test the refrigeration system, and during testing period, when the temperature of the sealed space of the test equipment is reduced to a first preset value, the heating power of the heater is increased until the temperature is increased to a second preset value, and then the heating power is reduced to an initial value. According to the refrigeration system test equipment, different refrigeration systems can be tested without producing a new tank body prototype of the refrigeration equipment.
Description
Technical field
The present invention relates to a kind of refrigeration system testing apparatus, the method for shortening refrigeration system test duration.
Background technology
All refrigerators all are to be installed in after new refrigeration system scheme is produced exemplar in the actual refrigerator in the development and testing process now, test in testing laboratory then.So just exist several problems: a, new refrigeration system scheme needs to produce again; The refrigerator of b, the new refrigeration system scheme of installation also needs to produce, if the words of new product development wait other parts exploitations of refrigerator to finish and end mould aptitude test afterwards with regard to needs; If the refrigerator of c different model just needs to produce different refrigerators and is used for testing.D, test article all will be scrapped at last.So just caused the refrigeration system exploitation to be subjected to the restriction of refrigerator whole development progress and the waste of a lot of refrigerator model machines.
For addressing the above problem, also provide the refrigerator system experiment table in the prior art.But, traditional refrigerator system experiment table is single station separate unit machine test, and the test duration is long, test result needs artificial contrast, when 2 refrigeration systems of contrast, need produce the model machine (model machine of refrigerator body and the refrigeration system that refrigerator body is installed) of two sets of plan in advance, set identical various parameters then, compare after making the result of each refrigeration system to be tested one by one, test length consuming time, complex operation.The course of work of traditional test equipment is as shown in Figure 1: system boot; refrigeration system work; temperature drops to the B degree in the casing; temperature controller control refrigeration system is shut down; along with the heat interchange inside and outside the casing; (process d1 when temperature rises to A and spends in the casing; this process is longer relatively); the work of temperature controller control refrigeration system; when refrigerator temperature clocklike fluctuates in certain design temperature; be called the system stability time (m is to the time of n); most of parameter of experiment all will obtain in this stabilization time, and (m is to the time of n) number of cycles is many more in this unit interval in theory, and experimental result is accurate more; in order to be issued to a plurality of refrigeration cycle in steady state (SS), have to prolong experimental period.
Summary of the invention
At the problem that exists in the correlation technique, the object of the present invention is to provide a kind of refrigeration system testing apparatus, the method for shortening refrigeration system test duration, not needing to produce under the situation of new refrigeration plant casing model machine, can test a plurality of different refrigeration systems of appointment.
For achieving the above object, the invention provides a kind of refrigeration system testing apparatus on the one hand, comprising: casing, have adiabatic seal cavity, seal cavity is by refrigeration system cooling to be tested; Well heater and temperature sensor all are located in the seal cavity; Master controller is electrically connected with well heater and temperature sensor respectively; Master controller is regulated the heating power of well heater, seal cavity is modeled to the temperature environment in the refrigeration plant casing with appointment according to the detected seal cavity temperature of temperature sensor.
Preferably, master controller further is electrically connected with the compressor of refrigeration system to be tested, and according to the comparative result of described seal cavity temperature and preset value, control compressor start or stop.
Preferably, well heater is an electrical heating wire.
Preferably, casing has stainless inner and outer wall, fills to form adiabatic seal cavity with polyurethane foam between the inner and outer wall.
Preferably, casing is two, the seal cavity of these two casings is independent separately, and be equipped with described well heater in each seal cavity, well heater all is electrically connected respectively with master controller, these two well heaters of main controller controls are modeled to the temperature environment that has in the appointment refrigeration plant casing respectively with the seal cavity with these two casings.
Preferably, the refrigeration system testing apparatus also comprises: be electrically connected with master controller, in order to detect refrigeration system＜compressor accumulated running time detecting device; Be electrically connected with master controller, in order to detect refrigeration system＜compressor accumulative total power consumption detecting device; Be electrically connected with master controller, in order to detect well heater＜well heater accumulated running time detecting device; Be electrically connected with master controller, in order to detect well heater＜well heater accumulative total power consumption detecting device; The display that is electrically connected with master controller, master controller is with detected＜compressor accumulated running time 〉,＜compressor accumulative total power consumption 〉,＜well heater accumulated running time 〉,＜well heater accumulative total power consumption〉export to described display, and general＜well heater accumulative total power consumption and＜compressor accumulative total power consumption〉ratio that obtains that is divided by exports to described display.
The invention provides a kind of method that shortens the refrigeration system test duration on the other hand, adopt the arbitrary testing apparatus of the present invention that refrigeration system is tested, and at test period: when the seal cavity temperature of testing apparatus is reduced to first predetermined value, the heating power of heightening well heater is increased to second predetermined value until the seal cavity temperature, in the seal cavity temperature when second predetermined value is reduced to first predetermined value, heating power keeps initial value constant, wherein initial value is: during temperature environment in seal cavity is modeled into the refrigeration plant casing with appointment, and the performance number that well heater has.
Useful technique effect of the present invention is:
(1) refrigeration system testing apparatus of the present invention, temperature sensor detected value according to seal cavity, regulate the well heater in the casing seal cavity, seal cavity is modeled to the temperature environment that has in the appointment refrigeration plant casing, so only produce the exemplar of refrigeration system, just can in testing apparatus, do the test of refrigeration system, and not need again refrigeration system to be installed to test in the refrigeration plant casing model machine, thereby can shorten the whole development cycle and the cost of development of refrigeration plant.
(2) in addition, the method of shortening refrigeration system test duration of the present invention, the heating power of well heater heightened until the seal cavity temperature from initial value be elevated to second predetermined value from first predetermined value, increased the rate of rise in temperature of seal cavity like this, make the frequency of temperature cycle variation of seal cavity accelerate, promptly increased the refrigeration number of cycles in the unit interval, therefore under the prerequisite that does not influence experimental precision, the inventive method has shortened experimental period, quickens the measuring and calculating to refrigeration system;
(3) further, refrigeration system testing apparatus of the present invention, have two casings, the seal cavity of these two casings is not communicated with each other, and each casing has well heater separately, thus can be simultaneously to the test that experimentizes of two systems, than single station separate unit refrigerator experiment table, refrigeration system testing apparatus of the present invention can be in the short period of time, in time of 1-2 days for example, finishes the experiment contrast of two refrigeration systems rapidly and accurately.
Description of drawings
When single station separate unit refrigerator experiment table of Fig. 1 prior art is worked, the temperature variation synoptic diagram in box sealing space;
When Fig. 2 is refrigeration system testing apparatus of the present invention work, the temperature variation synoptic diagram in box sealing space;
Fig. 3 is the synoptic diagram that refrigeration system testing apparatus of the present invention has two casings;
Fig. 4 is in the refrigeration system testing apparatus of the present invention, in order to seal cavity is modeled to the control principle figure of assigned temperature environment.
Embodiment
Below referring to accompanying drawing, the specific embodiment of the present invention is described.
Referring to Fig. 2-Fig. 4, one aspect of the present invention provides a kind of refrigeration system testing apparatus, it comprises: casing (test seal box), master controller, be located at well heater in the casing, be located at the temperature sensor in the casing, wherein well heater and temperature sensor are electrically connected with well heater respectively.Casing has adiabatic seal cavity, and seal cavity is by refrigeration system cooling to be tested; Master controller is regulated the heating power of well heater, seal cavity is modeled to the temperature environment in the refrigeration plant casing with appointment according to the detected seal cavity temperature of temperature sensor.In order to make box sealing space insulation effect good, can be set to have stainless inner and outer wall by casing, and between inner and outer wall, fill with polyurethane foam, the thickness that should fill is greater than 100mm in one embodiment.
Above-mentioned refrigeration system to be tested comprises at least: compressor, evaporator, condenser, when test, compressor and condenser are located at outside the seal cavity of casing, and evaporator is located in the seal cavity of casing, thereby the seal cavity to casing freezes when refrigeration system is worked.Master controller further is electrically connected with the compressor of refrigeration system to be tested, and according to the comparative result of detected seal cavity temperature and preset value, control compressor start or stop (correspondingly making refrigeration system start or stop), for example, when detected seal cavity temperature during more than or equal to first predetermined value (for example B among Fig. 2) and less than second predetermined value (for example A among Fig. 2) refrigeration system keep starting state, close refrigeration system when equaling second predetermined value, wherein first predetermined value is less than second predetermined value.The refrigeration plant casing is meant the assembly of all parts except refrigeration system among the present invention, promptly, described refrigeration plant casing is loaded onto the refrigeration plant that refrigeration system just constitutes complete energy operate as normal, for ease of explanation, refrigeration plant divided into by refrigeration plant casing and refrigeration system constitute in the literary composition.
When the seal cavity of refrigeration system testing apparatus is modeled into the temperature environment that has in the appointment refrigeration plant casing, after refrigeration system to be tested being installed on the refrigeration testing apparatus, just can simulate the operative scenario of actual refrigeration plant fully.In the refrigeration system testing apparatus, the heat interchange between well heater and the cooled seal cavity promptly is equivalent to the heat interchange between the actual refrigeration plant and the external world.Should be appreciated that refrigeration system to be tested can be the refrigeration system of refrigeration plants such as refrigerator or refrigerator-freezer.
Further, in the seal cavity of casing, the blower fan that is electrically connected with main control is installed also, blower fan is by the main controller controls switch, and when test refrigeration system to be tested, this blower fan keeps often opening.In order to make heater power constant, in the seal cavity of casing, also be provided with silicon controlled power modulation device in order to constant heater power, it is electrically connected with master controller.As optimal way, well heater can be made as electric heater, for example electrical heating wire etc.
Further again, refrigeration system checkout equipment of the present invention also comprises: in order to detect refrigeration system＜compressor accumulated running time detecting device, this detecting device is electrically connected with master controller; In order to detect refrigeration system＜compressor accumulative total power consumption detecting device, this detecting device is electrically connected with master controller; In order to detect well heater＜well heater accumulated running time detecting device, this detecting device is electrically connected with master controller; In order to detect well heater＜well heater accumulative total power consumption detecting device, this detecting device is electrically connected with master controller; The display that is electrically connected with master controller, master controller is with detected＜compressor accumulated running time 〉,＜compressor accumulative total power consumption 〉,＜well heater accumulated running time 〉,＜well heater accumulative total power consumption〉export to display, and general＜well heater accumulative total power consumption and＜compressor accumulative total power consumption〉ratio that obtains that is divided by exports to display.And master controller is calculated the actual refrigerating capacity of refrigeration system by the power meter of well heater consumption.Testing apparatus of the present invention in case set after the heating power of well heater, can keep heating power constant at whole test period when the test refrigeration system.
In order to test two refrigeration systems to be tested simultaneously, referring to Fig. 3, refrigeration system testing apparatus of the present invention has two casings 2 and 4, the seal cavity of these two casings is independent separately and be not communicated with each other, be equipped with described well heater in each seal cavity, these two well heaters master controller respectively are electrically connected, these two well heaters of main controller controls, be modeled to the temperature environment that has in the appointment refrigeration plant casing respectively with seal cavity with these two casings, wherein master controller is located in order on the terminal 6 that connects these two casings, and terminal 6 has display 61.To the test that experimentizes of two refrigeration systems to be tested, than single station separate unit refrigerator experiment table, the present invention can be in the short period of time by simultaneously, in time of 1-2 days for example, finishes the experiment contrast of two refrigeration systems rapidly and accurately.In brief, can test two kinds of refrigeration systems simultaneously, rather than test another again after testing one.
On the other hand, the present invention also provides a kind of method that improves the refrigeration system testing efficiency, adopt the aforementioned arbitrary testing apparatus of the present invention that refrigeration system is tested, and at test period: when the seal cavity temperature of testing apparatus (for example is reduced to first predetermined value, temperature B shown in Fig. 2) time, the heating power of heightening well heater (for example is increased to second predetermined value until described seal cavity temperature, temperature A shown in Fig. 2), then heating power is reduced to initial value, wherein initial value is: the performance number that has of well heater when seal cavity is modeled into temperature environment in the refrigeration plant casing with appointment.Should be appreciated that during the temperature of seal cavity was reduced to first predetermined value from second predetermined value, it is constant that well heater remains initial value.The inventive method is by the heating power of rising well heater, shortened the seal cavity temperature is elevated to second predetermined value from first predetermined value time, thereby make the frequency of temperature cycle variation of seal cavity accelerate, as shown in Figure 2, in the time from m to n (system stability time), process d2 consumed time has reduced, so the number in the cycle of freezing has increased, (m is to the time of n) number of cycles is many more in this unit interval in theory, experimental result is accurate more, thereby under the prerequisite that does not influence experimental precision, shortened experimental period, quickened test refrigeration system.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a refrigeration system testing apparatus is characterized in that, comprising:
Casing has adiabatic seal cavity, and described seal cavity is by refrigeration system cooling to be tested;
Well heater and temperature sensor all are located in the described seal cavity; And
Master controller is electrically connected with described well heater and temperature sensor respectively,
Wherein, described master controller is regulated the heating power of described well heater according to the detected described seal cavity temperature of described temperature sensor, described seal cavity is modeled to the temperature environment in the refrigeration plant casing with appointment.
2. refrigeration system testing apparatus according to claim 1 is characterized in that,
Described master controller further is electrically connected with the compressor of described refrigeration system to be tested, and according to the comparative result of described seal cavity temperature and preset value, controls described compressor start or stops.
3. refrigeration system testing apparatus according to claim 2 is characterized in that, described well heater is an electrical heating wire.
4. according to each described refrigeration system testing apparatus among the claim 2-3, it is characterized in that,
Described casing has stainless inner and outer wall, fills to form the seal cavity of described thermal insulation with polyurethane foam between the described inner and outer wall.
5. refrigeration system testing apparatus according to claim 4 is characterized in that,
Described casing is two, and the seal cavity of these two casings is independent separately, and is equipped with described well heater and the temperature sensor that is electrically connected with described master controller in each described seal cavity,
Wherein, described master controller is controlled corresponding well heater according to the detected value of respective temperature sensor, is modeled to respectively with the seal cavity with these two casings to have the temperature environment of specifying in the refrigeration plant casing.
6. according to each described refrigeration system testing apparatus among the claim 1-3,5, it is characterized in that, also comprise:
Be electrically connected with described master controller, in order to detect described refrigeration system＜compressor accumulated running time detecting device;
Be electrically connected with described master controller, in order to detect described refrigeration system＜compressor accumulative total power consumption detecting device;
Be electrically connected with described master controller, in order to detect described well heater＜well heater accumulated running time detecting device;
Be electrically connected with described master controller, in order to detect described well heater＜well heater accumulative total power consumption detecting device; And
The display that is electrically connected with described master controller,
Wherein, described master controller with detected described＜compressor accumulated running time,＜compressor accumulative total power consumption,＜well heater accumulated running time,＜well heater accumulative total power consumption export to described display, and with described＜well heater accumulative total power consumption and＜compressor accumulative total power consumption the ratio that obtains that is divided by exports to described display.
7. a method that shortens the refrigeration system test duration is characterized in that,
Adopt among the claim 1-6 each described testing apparatus that refrigeration system is tested, and at test period:
When the seal cavity temperature of described testing apparatus was reduced to first predetermined value, the heating power of heightening well heater was increased to second predetermined value until described temperature,
In described temperature when second predetermined value is reduced to first predetermined value, described heating power keeps initial value constant, wherein said initial value is: during temperature environment in described seal cavity is modeled into the refrigeration plant casing with appointment, and the performance number that described well heater has.
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| CN201555720U (en) * | 2009-12-18 | 2010-08-18 | 南京师范大学 | Property test cabinet system for refrigerator and ice tank |
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2011
- 2011-08-26 CN CN2011102490660A patent/CN102288444A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1281138A (en) * | 2000-07-20 | 2001-01-24 | 海尔集团公司 | Temp control method of periodic refrigerating and/or heating system |
| JP2004169966A (en) * | 2002-11-19 | 2004-06-17 | Matsushita Electric Ind Co Ltd | Testing device for air-conditioner |
| CN201191241Y (en) * | 2008-05-13 | 2009-02-04 | 上海佐竹冷热控制技术有限公司 | Experiment apparatus for split type air conditioner |
| CN101393083A (en) * | 2008-10-31 | 2009-03-25 | 信息产业部电子第五研究所 | Accelerated aging evaluation test apparatus for miniature Stirling refrigerating machine |
| CN201476977U (en) * | 2009-09-01 | 2010-05-19 | 海信科龙电器股份有限公司 | Refrigerator detection device |
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