CN103828500B - Casing refrigerating unit - Google Patents

Casing refrigerating unit Download PDF

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Publication number
CN103828500B
CN103828500B CN201280046297.4A CN201280046297A CN103828500B CN 103828500 B CN103828500 B CN 103828500B CN 201280046297 A CN201280046297 A CN 201280046297A CN 103828500 B CN103828500 B CN 103828500B
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CN
China
Prior art keywords
described
casing
fan
driving
element
Prior art date
Application number
CN201280046297.4A
Other languages
Chinese (zh)
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CN103828500A (en
Inventor
前田隆志
Original Assignee
古河电气工业株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2011207695A priority Critical patent/JP5653872B2/en
Priority to JP2011-207695 priority
Application filed by 古河电气工业株式会社 filed Critical 古河电气工业株式会社
Priority to PCT/JP2012/072872 priority patent/WO2013042553A1/en
Publication of CN103828500A publication Critical patent/CN103828500A/en
Application granted granted Critical
Publication of CN103828500B publication Critical patent/CN103828500B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B21/00Machines, plant, or systems, using electric or magnetic effects
    • F25B21/02Machines, plant, or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20536Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardized dimensions, e.g. 19-inch electronic racks
    • H05K7/206Air circulating in closed loop within cabinets wherein heat is removed through air-to-air heat-exchanger
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2321/00Details of machines, plants, or systems, using electric or magnetic effects
    • F25B2321/02Details of machines, plants, or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
    • F25B2321/021Control thereof
    • F25B2321/0211Control thereof of fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/12Sensors measuring the inside temperature
    • F25D2700/123Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/14Sensors measuring the temperature outside the refrigerator or freezer

Abstract

The present invention provides a kind of casing refrigerating unit, and casing refrigerating unit (1) has: air heat exchanger (20); Electronic cooler (30), it is equipped with Peltier's element (35) between heat absorbing side scatterer (31) and heat extraction side scatterer (33); And control unit (40), the driving of the fan (22,23) of air heat exchanger (20), heat absorption fan (32), sending out the hot fan (34) and Peltier's element (35) is controlled by it based on the cold air temperature (T3) of the temperature (T1) of box house, external air temperature (T2), Peltier's element (35). In the usual operating temperature range of control unit (40) in the casing set in advance, when rising to the first design temperature, drive fan (22,23) taking (T2<T1) as condition, when rising to the 2nd design temperature higher than the first design temperature, stop the driving of fan (22,23), and with (T3>=SVB; SVB is predefined condensation judgment value) it is condition, Peltier's element (35) is carried out cooling and drives.

Description

Casing refrigerating unit

Technical field

The present invention relates to a kind of casing refrigerating unit cooled by the casing of the parts (also referred to as heating element) being accommodated with the heatings such as control substrate.

Background technology

In the past, the refrigerating unit of below steady temperature it is known to be cooled to the box house being accommodated with heating element as described above. Such as, in patent documentation 1, disclose the refrigerating unit that refrigerating unit air heat exchange type air conditioning machinery being set to one with refrigerant-type air conditioning machinery and become is arranged in casing. This refrigerating unit is configured to use air heat exchange type air conditioning machinery and refrigerant-type air conditioning machinery respectively according to temperature in casing and external air temperature, and such refrigerating unit is correspondingly provided with multiple stage with heating load (quantity of heating element). In addition, in patent documentation 2, disclose following structure: from the internal gas path in casing with independently configure from the outside air path outside casing, at the partial configuration air heat exchange element that both intersect, and to make the internal gas path of its rear side faced by endothermic section, heat unit be configured with Peltier's element in the way of the outside air path of rear side. In such refrigerating unit, when the temperature of the internal gas that have passed air heat exchange element is higher, Peltier's element is utilized to cool.

In addition, in patent documentation 3, disclose the refrigerating unit that also can carry out moisture management beyond the temperature in casing. This refrigerating unit make use of Peltier's element, arranges humidity sensor in casing, carries out running control in the way of to carry out dehumidifying running when being in more than specified humidity. In addition, disclose in patent documentation 4 and make the heat absorbing side of Peltier's element directly contact with the heating element being accommodated in casing and obtain the refrigerating unit of cooling performance.

At first technical literature

Patent documentation

Patent documentation 1: No. 2001-193995, Japanese Unexamined Patent Publication

Patent documentation 2: No. 2005-55025, Japanese Unexamined Patent Publication

Patent documentation 3: No. 2008-141089, Japanese Unexamined Patent Publication

Patent documentation 4: No. 2003-8275, Japanese Unexamined Patent Publication

The summary of invention

The problem that invention to be solved

But, refrigerating unit disclosed in above-mentioned patent documentation 1 is arrange, according to load, the structure that air heat exchange type air conditioning machinery is set to the refrigerating unit that one becomes by multiple stage with refrigerant-type air conditioning machinery, therefore the installation space of refrigerating unit increases, and cost also becomes high, and control during cooling also becomes complicated.In addition, the refrigerating unit disclosed in above-mentioned patent documentation 2, when outside air temperature is higher than internal gas, utilizes air heat exchange element to heat internal gas, it is necessary to utilize Peltier's element to cool the internal gas after heating. That is, in the structure disclosed in patent documentation 2, when external air temperature is higher, compare with the situation directly utilizing Peltier's element to carry out cooled interior gas, it is necessary to more energy.

In addition, the refrigerating unit disclosed in above-mentioned patent documentation 3 is provided with humidity sensor, operates Peltier's element when exceeding the humidity of regulation and dehumidifies, but produces water of condensation in the casing that resistance to air loss is higher, has problems in the discharge etc. of water of condensation. In addition, refrigerating unit disclosed in above-mentioned patent documentation 4 has multiple heating element in casing, also Peltier's element and scatterer is needed to make to have identical number, magnitude setting, the method to set up of heating element is produced restriction, and also improving cost, control during cooling also becomes complicated. In addition, owing to making Peltier's element directly contact with heating element, therefore likely heating element is had an impact by producing condensation.

Summary of the invention

The present invention is conceived to the problems referred to above and makes, its object is to provide a kind of do not make the heating element arranged in casing arrange pattern etc. affected and can the refrigerating unit in cooling box efficiently. In addition, it is an object of the invention to provide a kind of can efficiently in cooling box and prevent the refrigerating unit of the generation of water of condensation.

For solving the means of problem

In order to realize above-mentioned purpose, the casing refrigerating unit of the present invention is characterised in that, this casing refrigerating unit has: air heat exchanger, and it is arranged at the casing being accommodated with heating element, it is possible to carry out the heat exchange based on air between described casing outside, electronic cooler, it makes the heat absorbing side scatterer possessing heat absorption fan expose at described box inside, the heat extraction side scatterer possessing sending out the hot fan is exposed outside described casing, between described heat absorbing side scatterer and described heat extraction side scatterer, is configured with cooling element, and control portion, it is based on the temperature T1 of described box house, external air temperature T2, the cold air temperature T3 of described cooling element and to the fan of described air heat exchanger, described heat absorption fan, the driving of described sending out the hot fan and cooling element controls, in the usual operating temperature range of described control portion in the casing set in advance, upper rise to the first design temperature time, taking (T2<T1) as condition, the fan of described air heat exchanger is driven, upper rise to the 2nd design temperature higher than described first design temperature time, stop the driving of the fan of described air heat exchanger, and with (T3>=SVB, SVB is predefined condensation judgment value) it is condition, described cooling element is carried out cooling and drives.

The casing refrigerating unit of said structure is being accommodated with in the casing of heating element to configure air heat exchanger and electronic cooler, control portion according to the rules condition and running is carried out switching control, therefore, it is possible to efficiently in cooling box. in this case, the switching control of air interchanger and electronic cooler is based on the temperature T1 of box house, external air temperature T2, the cold air temperature T3 of described cooling element performs, therefore, it is possible to obtain efficient cooling performance, especially in the usual operating temperature range in the casing set in advance, upper rise to the first design temperature time, the fan of air heat exchanger is driven, and, the driving of this fan is taking (T2 < T1) as condition, therefore when external air temperature is higher compared with the temperature in casing, can not unnecessarily be imported to by the outside air of high-temperature makes the temperature in casing sharply rise in casing.In addition, when rising to the 2nd design temperature higher than the first design temperature on further, stop the driving of the fan of air heat exchanger and cooling element is carried out cooling and drives (switching running), it is possible to efficiently in cooling box. It should be noted that, when the cooling of cooling element drives the cold air temperature at cooling element to become lower than condensation judgment value (SVB), this cooling is driven and carries out stopping control, therefore, it is possible to prevent from producing water of condensation in casing.

In the casing refrigerating unit of said structure, it is possible to so that described control portion is in described usual operating temperature range, when being reduced to the 3rd design temperature lower than described first design temperature, described cooling element is carried out heat driven.

In this case, even if the temperature in casing is in usual operating temperature range, owing to the temperature in casing is in the state of reduction, therefore by cooling element is carried out heat driven, it is possible to make the rise in temperature in casing to suitable temperature and maintain.

In addition, in the casing refrigerating unit of said structure, it is also possible to described cooling element is provided with multiple system side by side, each system is carried out ON/OFF driving according to the temperature T1 of described box house by described control portion.

In such a configuration, load (temperature load) according to the heating element of storage in casing, each system is operated successively, it is possible to carry out control running with the minimum formation (optimum capacity mated mutually with load) suitable mutually with load, it is possible to realize energy-saving. Especially, by each system stages being carried out control running, compared with the structure that once cooling element is carried out ON/OFF driving, improve the degree of the vibration of storehouse temperature.

And, in the structure that cooling element is arranged side by side multiple system, it is possible to be connected in series so that the cooling element being provided with multiple system side by side is multiple separately.

By such formation, it is possible to realize the raising of cooling and heating efficiency.

In addition, in the casing refrigerating unit of said structure, it is possible to so that described control portion is in described usual operating temperature range, described heat absorption fan is maintained driving state.

By such formation, in casing, internal gas is made to keep the state circulated all the time by the driving of the fan that absorbs heat, it is possible to make the temperature T1 stabilization of box house.

In addition, in the casing refrigerating unit of said structure, it is possible to so that described control portion is in described usual operating temperature range, upper rise to described first design temperature time, drive described sending out the hot fan.

By such formation, the cooling element at electronic cooler carries out cooling the last stage driven, the scatterer cooling of the heat extraction side of electronic cooler, carries out cooling cooling efficiency when driving therefore, it is possible to improve electronic cooler, and plays cooling performance rapidly. In addition, after the cooling stopping cooling element driving, also owing to temporarily driving sending out the hot fan, therefore, it is possible in long-term scope the performance of stable maintenance cooling element.

In addition, in the casing refrigerating unit of said structure, described control portion can also be made when exceeding the higher limit of described usual operating temperature range, and the cooling maintaining the driving of the fan of described air heat exchanger, the driving of described heat absorption fan, the driving of described sending out the hot fan and cooling element drives.

In such structure, the temperature in casing exceeds usual operating temperature range and rises, and therefore both air heat exchanger and electronic cooler is driven, it is possible to the temperature of cooling box inside rapidly, makes to return usual operating temperature range in casing. That is, when the both sides of air heat exchanger and electronic cooler drive and are only limitted to exceed usual operating temperature range and rise, therefore, it is possible to realize cooling running efficiently.

In addition, in the casing refrigerating unit of said structure, can also make described control portion when lower than the lower value of described usual operating temperature range, stop the driving of the fan of described air heat exchanger, the driving of described heat absorption fan, the driving of described sending out the hot fan and the heat driven of cooling element.

Usually, the temperature of box house utilizes the running of heating element and rises gradually, but when being in the state of the lower value lower than usual operating temperature range, each driving factor likely produces to add thermal anomaly, therefore by being set to stopping state, it is possible to realize the raising of energy-saving operation and security.

Invention effect

According to the present invention, it is possible to do not make the heating element arranged in casing arrange pattern etc. affected and efficiently in cooling box. In addition, the casing refrigerating unit utilizing high efficiency cooling in casing and the generation of water of condensation can be prevented is obtained.

Accompanying drawing explanation

Fig. 1 is the overall brief configuration figure of an enforcement mode of the casing refrigerating unit representing the present invention.

Fig. 2 is the block diagram of the formation representing the control unit that each driving part to casing refrigerating unit carries out running control.

Fig. 3 is the control diagram of the pattern of the control running representing air heat exchanger and the electronic cooler implemented in control portion.

Fig. 4 is the graphic representation of the relation between the control running of temperature and the electronic cooler representing in casing.

Embodiment

Hereinafter, with reference to accompanying drawing, one enforcement mode of casing refrigerating unit involved in the present invention is specifically described.

Fig. 1 is the integrally-built concise and to the point figure of the casing representing and having refrigerating unit.

The casing 1 of present embodiment is configured to the box of the cross section substantially rectangular shape being separated out by thermal insulation barriers wall 3, and its internal space (hereinafter referred to as in storehouse) 4 can be undertaken airtight by being assemblied in the shutter door 3A ' of front surface part 3A. The various heating element such as 4 modulator-demodulator units being such as accommodated with signal equipment, supply unit in storehouse, in the present embodiment, in storehouse, 4 configurations have the frame 5 of multiple frame plate 5a, are provided with various heating element on this plate 5a.

The refrigerating unit 10 of the temperature being configured with to dispersion in control, management casing in described casing 1. This refrigerating unit 10 possesses: air heat exchanger 20, and it is configured in the top plate portion 3B of casing 1, inside and outside connect box; Electronic cooler 30, it is configured in back part 3C, inside and outside connect box; And control unit 40, it controls the running of described air heat exchanger 10 and electronic cooler 20. In this case, as long as control unit 40 is arranged on the optional position of casing 1, in the present embodiment, be arranged in storehouse 4 frame 5 frame plate 5a on. In addition, refrigerating unit 10 possesses sensor S1, the sensor S2 measured by external air temperature T2 that the temperature T1 to box house measures and the sensor S3 that the cold air temperature T3 to the cooling element forming described electronic cooler 30 measures, the temperature information detected by these sensors S1��S3 is as described later, to the control portion input forming control unit 40, become the triggering signal that the running to each driving factor controls.

Described air heat exchanger 20 possesses the shell 21 arranged on top plate portion 3B, in this shell 21, utilizes the fan 22 arranged in the inner side of top plate portion 3B to be discharged by internal gas 22A, and utilizes the fan 23 arranged on shell 21 that outside air 23A is passed through. In this case, shell 21 in present embodiment has makes the stream road 21A that outside air 23A passes through and the stream road 21B that internal gas 22A is passed through, and Ge Liu road 21A, 21B preferably become does not make outside air and internal gas mixedly independently be formed up and down and carry out the structure of heat exchange by the wall face 21C of adjacent flow passages.In addition, for Ge Liu road 21A, 21B, preferably it is configured to fin shape to easily dispel the heat.

It should be noted that, above-mentioned fan 22 and fan 23 are synchronously driven by the control portion of described control unit 40.

Described electronic cooler 30 possesses the heat extraction side scatterer 33 of the heat absorbing side scatterer (heat radiation fan) 31 in inside-of-refrigerator configuration and configuration outside storehouse, and these structural allocation are the upper opening 3d formed of installation plate (not shown) being passed in the back part 3C being located at casing 1. In this case, electronic cooler 30 possesses Peltier's element 35 as cooling element, this Peltier's element 35 be configured in be connected with plate via liner and described installation between metal sheet 36 and heat absorbing side scatterer (heat radiation fan) 31. In addition, described heat extraction side scatterer 33 be arranged on metal sheet 36 with on the face of face opposite side being provided with Peltier's element 35. It should be noted that, Peltier's element 35 and radiating fin combination, radiator element by the different structure of various fin shape or can utilize and has the structure of heat conduction pipe to form.

At the one end of described heat absorbing side scatterer 31, by make the internal gas in storehouse by the way of arrange heat absorption fan 32, the internal gas 32A in storehouse flows in heat absorbing side scatterer 31, discharges from the other end. In this case, in the other end, it is configured with the sensor S3 that the cold air temperature T3 to cooling element (Peltier's element 35) measures as described above. In addition, in the end side of described heat extraction side scatterer 33, sending out the hot fan 34 is set in order to discharge the air being detained in heat extraction side scatterer 33, and the air 34A cooled and heat by described Peltier's element 35 is discharged outside storehouse.

Above-mentioned cooling element 35 and heat absorption fan 32 and sending out the hot fan 34 independently driven by the control portion of described control unit 40. In this case, preferably being in, in each scatterer 31,33, the courant making air puts such position relation in pairs for heat absorption fan 32 and sending out the hot fan 34, especially, for sending out the hot fan 34, in order to the air in heat extraction side scatterer 33 is discharged and carry out efficient heat extraction upward, it is preferable that be configured to make internal gas rise from bottom.

It should be noted that, in above-mentioned structure, the material forming described casing 1 payes attention to weathering resistance, intensity, it is desirable to outside plate is set to stainless steel. Wherein, lightness is considered for the frame unit of tinted shade, box house, it is preferred to use aluminium. In addition, for the material forming inner frame plate 5a (frame 5) etc., from intensity and dust-proof viewpoint, it is preferred to use stainless steel. In addition, for above-mentioned metal sheet 36, from heat conduction, it is desirable to use copper coin, but aluminium is preferably used owing to weight increases.

Fig. 2 is the block diagram of the structure representing the control unit that each driving part to above-mentioned refrigerating unit carries out running control.

Control unit 40 has control portion 41, and this control portion 41 possesses the operation program storing regulation and controls the function of the driving of the heat absorption fan 32 of the fan 22,23 of described air heat exchanger 20 and described electronic cooler 30, sending out the hot fan 34 and cooling element (Peltier's element) 35 based on the detected temperatures signal sent from each sensor S1��S3. Namely, the fan 22,23 of air heat exchanger 20 is undertaken synchronous and ON/OFF drives by the fans drive portion 42 possessing driving circuit, and the heat absorption fan 32 of electronic cooler 30 and sending out the hot fan 34 independently carry out ON/OFF driving by the fans drive portion 43,44 possessing driving circuit respectively.

In addition, the Peltier's element 35 of present embodiment is provided with multiple system (representing the four systems of Peltier's element 35A��35D in fig. 2) side by side, and the Peltier's element of multiple system is carried out ON/OFF drived control by described control portion 41 in units of each system. That is, the Peltier's element 35A��35D of each system is respectively by the amber ear note driving part 45��48 of the driving circuit possessing the reversal of poles that can make electric current, independently carries out heating/cooling driving and ON/OFF driving.

It should be noted that, in the present embodiment, furthermore, arrange side by side multiple system cooling element 35A��35D is configured to make multiple Peltier's element respectively, in each system, two Peltier's elements (35A, 35a1), (35B, 35b1), (35C, 35c1), (35D, 35d1) connect in the way of connecting specifically. Certainly, the number of the system quantity of Peltier's element, the Peltier's element of series connection suitably can be out of shape according to specification of refrigerating unit etc.

Next, with reference to Fig. 3, the control running method based on above-mentioned control unit 40 is specifically described.

Fig. 3 represents control diagram, and this control diagram represents an embodiment example of the control running of the heat absorption fan 32 of the fan 22,23 of the air heat exchanger 20 and electronic cooler 30 implemented in the control portion 41 of control unit 40, sending out the hot fan 34 and Peltier's element 35.

In the usual operating temperature range R of described control portion 41 in the casing set in advance, when temperature T1 in casing rises to the first design temperature (SV2), the temperature T1 (T2<T1) being less than in casing taking external air temperature T2, as condition, drives the fan 22,23 (with reference to control diagram (a)) of air heat exchanger 20. In addition, when temperature T1 in casing rises to two design temperature (SV3) higher than the first design temperature (SV2), stop the driving (with reference to control diagram (b)) of the fan 22,23 of air heat exchanger 20, and as condition (T3>=SVB) more than being predefined condensation judgment value (SVB) taking the cold air temperature T3 of Peltier's element 35, Peltier's element 35 is carried out cooling and drives (with reference to control diagram (c)).

As mentioned above, it is necessary, in usual operating temperature range R in casing 1, when temperature T1 rises to the first design temperature (SV2) therein, by driving the fan 22,23 of air heat exchanger 20, it is possible to the storehouse temperature risen is cooled. Like this, temperature in casing and have the region of difference between external air temperature, is set to only running based on air heat exchanger 20, does not implement the running of electronic cooler 30, therefore, it is possible to realize energy-saving. In this case, the driving of fan 22,23 is as described above taking external air temperature T2 < internal air temperature T1 as condition, therefore when outside air temperature is higher than temperature in casing, can not unnecessarily the outside air of high temperature be imported in casing 1, the temperature in casing 1 can not be made sharply to increase. That is, until external air temperature becomes lower than storehouse temperature, stop the driving of the fan 22,23 of air heat exchanger 20, do not make outside heat move to box house as much as possible.

Then, by stopping the driving of fan 22,23, temperature T1 in casing rises, when rising to two design temperature (SV3) higher than the first design temperature (SV2), Peltier's element 35 carries out cooling drive, control in the way of remaining steady temperature in cold room (with reference to control diagram (c)).It should be noted that, when there is fault in whole system scope in Peltier's element 35, the driving of fan 22,23 continues former state and drives taking external air temperature T2 < internal air temperature T1 as condition, implements the cooling in storehouse (with reference to control diagram (b) �� 1).

When the cooling carrying out this Peltier's element 35 drives, when the cold air temperature T3 of Peltier's element 35 becomes lower than predefined condensation judgment value (SVB), condensation is likely produced at the part place of heat absorbing side scatterer (heat release fan) 31, therefore carry out stopping control to cooling driving, prevent from storehouse, produce water of condensation (with reference to control diagram (c)). That is, in the present embodiment, easily producing the part place of condensation so that not becoming the mode controlled cooling model running of the temperature province (below condensation judgment value) producing condensation, by make storehouse temperature keep constant in the way of control.

It should be noted that, for the judgement of condensation, such as can also judge dew-point temperature by the detection of humidity sensor and storehouse temperature, carry out running control, but as in this embodiment, by predefined condensation judgment value (SVB), carry out running control by being set to dew-point temperature below this temperature such that it is able to simplify item controlled. In addition, in the present embodiment, even if fault occurs the sensor S1 contingency for the temperature T1 detected in casing, it is also possible to substitute the sensor S3 using and being measured by cold air temperature T3.

In addition, described control portion 41 is controlled to, when exceeding higher limit (SV3+10 DEG C) of usual operating temperature range R, maintain the driving of fan 22,23 of air heat exchanger 20 and namely the absorb heat cooling of the driving of fan 32, the driving of sending out the hot fan 34 and Peltier's element 35 of the driving part of electronic cooler 30 drives.

Like this, the temperature T1 in casing 1 exceedes usual operating temperature range R and rises, and therefore drives both air heat exchanger 20 and electronic cooler 30, the temperature of box house is cooled rapidly, makes to return usual operating temperature range R in casing. That is, when the temperature T1 that driving both air heat exchanger 20 and electronic cooler 30 is only limitted in casing exceedes usual operating temperature range R and rises, therefore, it is possible to implement to cool running efficiently.

As mentioned above, it is necessary, according to above-mentioned refrigerating unit 10, in the casing 1 being accommodated with heating element, configuration air heat exchanger 20 and electronic cooler 30, control portion 40 according to the rules condition and running is carried out switching control, therefore, it is possible to reduce operating cost, and can efficiently in cooling box. In addition, air heat exchanger 20 and electronic cooler 30 switch driving, the both sides' driving of either one respectively with the state of the best, the refrigerating unit become without the need to air heat exchanger and electronic cooler are set to one arranges multiple stage according to the load of heating element, can not produce the installation space in casing and become big, the surging such situation of cost. In addition, the switching control of air interchanger 20 and electronic cooler 30 performs based on the cold air temperature T3 of the temperature T1 in casing, external air temperature T2, Peltier's element 35, therefore, it is possible to obtain efficient cooling performance, cooling for Peltier's element drives, when its cold air temperature becomes lower than condensation judgment value (SVB), carry out stopping control to its cooling driving, therefore, it is possible to prevent from producing water of condensation in casing.

In addition, in the present embodiment, described control portion 41 is in usual operating temperature range R, when being reduced to the 3rd design temperature (SV1) lower than described first design temperature (SV2), control in the way of Peltier's element 35 is carried out heat driven (with reference to control diagram (d)).

In this case, in usual operating temperature range R, owing to the temperature in casing 1 quite reduces, therefore by heat driven Peltier's element 35, it is possible to make the rise in temperature in casing 1 to more suitable temperature and maintain. It should be noted that, based on the heating running of above-mentioned Peltier's element 35, the situation that the temperature in casing does not rise is (less than SV1-5 DEG C), and this is the scope that can not cause under common running condition. In such a case, it is possible to produce add thermal anomaly (exceeding the specification operating temperature range of equipment), in the present embodiment, therefore, therefore control in the way of making the stopping of whole driving factor, it is to increase security. Or, when the situation that storehouse temperature becomes (less than SV1-5 DEG C) have passed through the constant time, add thermal anomaly as likely producing, it is also possible to make control portion 41 externally send abnormality alarm.

In addition, described control portion 41 is in usual operating temperature range R, it is also possible to control by the heat absorption fan 32 of electronic cooler 30 is maintained the mode of driving state. By such formation, in casing 1, drive heat absorption fan 32 all the time, therefore keep the state that internal gas circulates all the time, it is possible to make the temperature T1 stabilization of box house.

Additionally, it is preferred that, described control portion 41, in usual operating temperature range R, when the temperature T1 in casing rises to described first design temperature (SV2), controls in the way of driving the sending out the hot fan 34 of electronic cooler 30. This is because, when Peltier's element 35 is carried out cooling driving with described 2nd design temperature (SV3), heated side (heat extraction side scatterer 33) at Peltier's element comprises the fin portions of Peltier's element, even if Peltier's element running stops rear (even if storehouse temperature is reduced to the first design temperature SV2), also can temporarily continue higher state; And when Peltier's element 35 does not dispel the heat in heated side rapidly, performance and life-span to element have an impact, therefore, (with reference to control diagram (e)) and before and after it (reference control diagram (f)) in the cooling of Peltier's element 35 operates, by sending out the hot fan 34 is controlled to driving state, can dispel the heat rapidly in heated side, and prevent the temperature T1 in casing from rising and maintaining cooling performance, and the performance of Peltier's element 35 stabilization in long-term scope can be made. It should be noted that, the driving of sending out the hot fan 34 can drive even dynamic with the cooling of Peltier's element 35, it is also possible to after the cooling stopping Peltier's element driving, and utilizes delay timer etc. and controls in the way of carrying out constant time driving.

In addition, for above-mentioned heat absorption fan 32 and sending out the hot fan 34, controlled by the mode that synchronously drives when driving fan 22, the 23 of air heat exchanger 20, it is possible to by heat conduction, the temperature in casing is externally discharged such that it is able to make storehouse temperature stabilization.

In addition, the Peltier's element 35 forming electronic cooler 30 is provided with multiple system by the refrigerating unit of present embodiment side by side. in this case, described control portion 41 can also control by each system carries out the mode of ON/OFF driving according to the temperature T1 in casing. specifically, such as, as shown in Figure 4, temperature T1 in casing declines gradually, if Peltier's element 35 being carried out heat driven when declining from the 3rd design temperature (SV1), then control portion 41 is controlled to, Peltier's element 35A system is being driven from decline moment of 2 DEG C of the 3rd design temperature (SV1), Peltier's element 35B system is being driven from decline moment of 3 DEG C of the 3rd design temperature (SV1), Peltier's element 35C system is being driven from decline moment of 4 DEG C of the 3rd design temperature (SV1), from the 3rd design temperature (SV1) decline 5 DEG C moment drive Peltier's element 35D system and become maximum heating state.Then, when utilizing such control running to make the temperature T1 in casing increase, carry out heat driven successively equally stopping control in units of each system.

Like this, by Peltier's element being arranged multiple system, each system stages is carried out control running, thus compared with the structure that once Peltier's element is carried out ON/OFF driving, it is possible to improve the degree of oscillation of the temperature in casing. In addition, in such a configuration, load (temperature load) according to the heating element of storage in casing 1, also each system can be made to operate successively, control running can be carried out, it is possible to realize reduction and the energy-saving of operating cost with the minimal structure (optimum capacity mated mutually with load) fitted mutually with load. Certainly, it is also possible to the 2nd design temperature (SV3) that the temperature T1 in casing rises gradually and becomes above-mentioned taking the temperature in casing operates as Peltier's element 35 is carried out implementing above-mentioned interim control when cooling and drive by target.

It should be noted that, in the present embodiment, it is provided with that the Peltier's element 35A��35D of multiple system is multiple separately to be connected in series side by side, therefore the raising of cooling power and heating efficiency can be realized.

Above, embodiments of the present invention are illustrated, but the present invention is not limited to above-mentioned enforcement mode, it is possible to carry out various distortion.

Such as, in above-mentioned electronic cooler 30, for the structure of multiple system configuration Peltier's element 35 and interim control running, also can implement in the refrigerating unit that air heat exchanger 20 is not set. That is, in such a configuration, it is possible to realize cooling (heating) drived control corresponding to the load of heating element, it is possible to improve the degree of vibration and cool efficiently in (heating) casing. In addition, electronic cooler 30 is except using Peltier's element, it is also possible to use the cooling construction such as circulated based on general refrigerant.

In addition, above-mentioned air heat exchanger 20 is configured to not make internal gas 22A directly contact and carry out heat exchange by the wall face 21C separated by heat conduction with outside air 23A, but the mode for heat exchange can carry out various distortion. Such as, it is also possible to the grid fin of various radiator element, such as lit-par-lit structure is set in shell 21, thus in grid Jian Liu road, carry out heat exchange.

In addition, it is also possible to be configured to, by improving the resistance to air loss of above-mentioned casing 1, in casing 1, moisture adsorbent is set and has humidity adjustment function.

Description of reference numerals:

1 casing

10 refrigerating units

20 air heat exchangers

22,23 fan

30 electronic coolers

31 heat absorbing side scatterers

32 heat absorption fans

33 heat extraction side scatterers

34 sending out the hot fan

35 Peltier's elements

40 control units

41 control portions

Claims (8)

1. a casing refrigerating unit, it is characterised in that,
This casing refrigerating unit has:
Air heat exchanger, it is arranged at the casing being accommodated with heating element, and possesses shell, in described shell, by the internal gas in described casing is discharged and outside air is passed through, thus can carry out the heat exchange based on air between the outside of described casing;
Electronic cooler, it makes the heat absorbing side scatterer possessing heat absorption fan expose at described box inside, the heat extraction side scatterer possessing sending out the hot fan is exposed outside described casing, between described heat absorbing side scatterer and described heat extraction side scatterer, is equipped with cooling element; And
Control portion, the driving of the fan of described air heat exchanger, described heat absorption fan, described sending out the hot fan and cooling element is controlled by it based on the cold air temperature T3 of the temperature T1 of described box house, external air temperature T2, described cooling element,
Described control portion according to the rules condition the running of described air heat exchanger and described electronic cooler is carried out switching control, make in the usual operating temperature range in the casing set in advance, upper rise to the first design temperature time, taking T2 < T1 as condition, the fan of described air heat exchanger is driven, upper rise to the 2nd design temperature higher than described first design temperature time, stop the driving of the fan of described air heat exchanger, and with T3 >=SVB;The condensation judgment value that SVB is predefined is condition, described cooling element carries out cooling and drives.
2. casing refrigerating unit according to claim 1, it is characterised in that,
Described cooling element, in described usual operating temperature range, when being reduced to the 3rd design temperature lower than described first design temperature, is carried out heat driven by described control portion.
3. casing refrigerating unit according to claim 1 and 2, it is characterised in that,
Described cooling element is provided with multiple system side by side,
Each system is carried out ON/OFF driving according to the temperature T1 of described box house by described control portion.
4. casing refrigerating unit according to claim 3, it is characterised in that,
The described cooling element being provided with multiple system side by side is multiple separately to be connected in series.
5. casing refrigerating unit according to claim 1 and 2, it is characterised in that,
Described heat absorption fan, in described usual operating temperature range, is maintained driving state by described control portion.
6. casing refrigerating unit according to claim 1 and 2, it is characterised in that,
Described control portion in described usual operating temperature range, upper rise to described first design temperature time, drive described sending out the hot fan.
7. casing refrigerating unit according to claim 1 and 2, it is characterised in that,
Described control portion is when exceeding the higher limit of described usual operating temperature range, and the cooling maintaining the driving of the fan of described air heat exchanger, the driving of described heat absorption fan, the driving of described sending out the hot fan and cooling element drives.
8. casing refrigerating unit according to claim 1 and 2, it is characterised in that,
Described control portion, when lower than the lower value of described usual operating temperature range, stops the driving of the fan of described air heat exchanger, the driving of described heat absorption fan, the driving of described sending out the hot fan and the heat driven of cooling element.
CN201280046297.4A 2011-09-22 2012-09-07 Casing refrigerating unit CN103828500B (en)

Priority Applications (3)

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JP2011207695A JP5653872B2 (en) 2011-09-22 2011-09-22 Case cooling system
JP2011-207695 2011-09-22
PCT/JP2012/072872 WO2013042553A1 (en) 2011-09-22 2012-09-07 Cooling device for housing

Publications (2)

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CN103828500A CN103828500A (en) 2014-05-28
CN103828500B true CN103828500B (en) 2016-06-08

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WO (1) WO2013042553A1 (en)

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CN103828500A (en) 2014-05-28
JP5653872B2 (en) 2015-01-14
JP2013069890A (en) 2013-04-18
WO2013042553A1 (en) 2013-03-28
TW201319479A (en) 2013-05-16

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