CN2152805Y

CN2152805Y - Adjustable thermostated container

Info

Publication number: CN2152805Y
Application number: CN 93208045
Authority: CN
Inventors: 赵贤; 陶卫国; 吴龙; 任伟德; 宋美伦
Original assignee: JIEFANG ELECTRONIC INSTRUMENT FACTORY HANGZHOU
Current assignee: JIEFANG ELECTRONIC INSTRUMENT FACTORY HANGZHOU
Priority date: 1993-03-27
Filing date: 1993-03-27
Publication date: 1994-01-12
Anticipated expiration: 2003-03-27

Abstract

The utility model discloses an adjustable thermostatic box for biological experiments, microbial cultivation, etc. The adjustable thermostatic box is composed of a box body, refrigerating elements and a controller, wherein, the refrigerating elements use a semiconductor temperature difference refrigerating assembly produced according to the peltier effect, and the current direction of the pole sheet of the semiconductor temperature difference refrigerating assembly is controlled by the controller composed of a temperature sensor, a digital display regulator and a relay. The thermostatic box eliminates the defects that the harmful gas freon in traditional refrigerating elements pollute environment, and has double-way automatic thermostatic control function of refrigeration and heating.

Description

Adjustable thermostated container

The utility model relates to a kind of adjustable thermostat container that is used for Bioexperiment, microorganism culturing etc.

The existing thermostat container that is made of casing, thermoregulating system divides refrigeration or heats two kinds, and its Thermal Control Element adopts cooling element or heating unit, reaches the unidirectional constant temperature purpose that is lower than room temperature or is higher than room temperature by refrigeration or heating respectively, has greatly influenced use.And the cooling element of existing refrigeration thermostat container adopts fluorine Lyons cooling agent more, and ecotope is brought pollution.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of elimination fluorine Lyons obnoxious flavour to pollute, the adjustable thermostat container of the two-way automatic control constant temperature function that having can refrigeration, can heat again.

The purpose of this utility model is achieved through the following technical solutions: constitute adjustable thermostat container by casing, thermoregulating system, thermoregulating system is made up of cooling element and controller, cooling element is without fluorine Lyons cooling agent, the thermoelectric refrigeration of semiconductor assembly that employing is made according to paltie effect, the pole piece sense of current of thermoelectric refrigeration of semiconductor assembly is controlled by controller.

Description of drawings:

Fig. 1 is the utility model thermostat container cabinet panel synoptic diagram.

Fig. 2 is the utility model thermostat container structure sectional view.

Fig. 3 is the utility model thermostat container embodiment schematic circuit diagram.

In conjunction with the embodiments the utility model is described in further detail with reference to the accompanying drawings:

A kind of adjustable thermostat container is made of casing, thermoregulating system.Thermoregulating system is made up of cooling element and controller, and cooling element adopts thermoelectric refrigeration of semiconductor assembly TC, and the pole piece sense of current of semiconductor refrigerating assembly TC is controlled by controller.The controller of control semiconductor refrigerating assembly TC is by the relay K of temperature sensor RT, digital display regulator XMT and digital display regulator XTM control ₁, K ₂Form.The relay K of controller ₁, K ₂Between string advance by resistance R ₅, relay indicating light V ₉, the temperature of doing that is in series of hummer B sets sound, the light crossing-signal that transfer in the school.Assembly has power switch SA, relay indicating light V on the cabinet panel ₇, V ₈, V ₉, V ₁₀The temperature of numeral display regulator XTM shows charactron 01, lower limit temperature is set adjusting knob 02, on, lower limit temperature is set and is selected tumbler switch 03, ceiling temperature is set adjusting knob 04, aluminium alloy decoration type frame 2 is housed on the outer case 1 of casing, have the chamber door 3 that to open, chamber door backing plate 4, square rubber ring 6 of door and casing back shroud 9, good metal inner tube that is inserted with temperature sensor RT 5 of heat conductivity and the square rubber ring 7 of inner bag are arranged in the casing, fixing blower fan M is equipped with in metal inner tube 5 back of casing, opening part has the box partition 8 of the energy storage block 10 of being close to metal inner tube 5, be fixed with semiconductor refrigerating assembly TC by the fastening piece 12 that has packing ring 13 on the energy storage board 10, heat radiation backing plate 11, the packing ring 13 outer scatterers 14 that are connected with, the printed-wiring board (PWB) 15 of controller is fixed on digital display regulator XMT back in the casing.

The embodiment power supply is civil power 220V ± 22V, forms an overload, short-circuit protection and on/off circuit by fusible cut-out FU, power switch SA.Power switch SA is ship shape tape light K switch CD250V6A, and transformer T is BK-150 220V/2 * 40V, and semiconductor refrigerating assembly TC adopts three serial connection TC ₁, TC ₂, TC ₃Be TEC ₁-12703, digital display regulator is XMTA2202, relay K ₁, K ₂Select for use JQX-10DC36V, blower fan M to select single-phase exhaust fan 220V40W, relay indicating light V for use ₇, V ₈, V ₉, V ₁₀With photodiode, hummer B is FMQ-20 DC6-15V.

During use, connect switch SA, digital display regulator XMT and transformer T work, Circuit Fault on Secondary Transformer output 36V voltage is through rectifying tube V ₁, V ₂Rectification, capacitor C ₂, C ₃Be filtered into thermoelectric refrigeration of semiconductor assembly TC ₁, TC ₂, TC ₃Provide one to exchange the less direct supply of ripple voltage.Numeral display regulator normally closed interlock XMT-1, XMT-2 and normally open contact XMT-1 ', XMT-2 ' make cold or hot two-way thermometric control and relay K ₁, K ₂The control contact of coil.When upper limit set temperature value was lower than room temperature, thermostat container was in refrigeration condition, and normally closed, the normally open contact of XMT are in raw state, K ₁Coil gets electric, K _{1-1 '}, K _1-2Normal switching is closed, K _1-1Normally closed disconnection, TC ₁, TC ₂, TC ₃The energising, (electric current is from TC ₁To TC ₃) relay indicating light V ₇Bright, blower fan M starts, and carries out air cooling, after constant temperature the temperature inside the box reaches upper limit design temperature, and XMT ₁Action, normally closed interlock XMT _-1Disconnect normally open contact XMT _{-1 '}Closure, K ₁Coil losing electricity, TC ₁, TC ₂, TC ₃Dead electricity, V ₇Go out, M stops, relay indicating light V ₁₀Bright, the indication thermostat container enters temperature constant state, and temperature raises gradually in constant temperature for some time rear cabinet, and when height arrived set(ting)value, thermostat container entered refrigeration condition again, so repeatedly.When the lower limit set temperature value was higher than room temperature, thermostat container was in heated condition, XMT _-1, the normally closed disconnection of XMT-2, XMT _{-1 '}, XMT _{-2 '}The normal switching closed K ₂Coil gets electric, K _2-1', K _2-2Normal switching is closed, K _2-1Normally closed disconnection, TC ₁, TC ₂, TC ₃(electric current is from TC in energising ₃To TC ₁, semiconductor refrigerating assembly enters adverse state work), relay indicating light V ₈Bright, blower fan M starts, after calorstat temperature reaches the lower limit set temperature value, and XMT _-2Normally closedly reset, XMT _{-2 '}Often open and reset K ₂Coil losing electricity, TC ₁, TC ₂, TC ₃Dead electricity, V ₈Go out, M stops, V ₁₀Bright, the expression thermostat container enters temperature constant state, and constant temperature is after for some time, and the temperature inside the box descends gradually, and after the lower limit set value of falling, thermostat container enters heated condition again, works so repeatedly.When combined aural and visual alarm is lower than lower limit set value in upper limit set value, XMT ₁Be failure to actuate, XMT ₂Action, relay indicating light V ₉Bright, hummer B rings, and sends guard signal, at this moment K ₁, K ₂Two rly.s are worked simultaneously, the TC of serial connection ₁, TC ₂, TC ₃The idiostatic akinesia in two ends, V after setting correctly ₉Go out, B does not ring.

The utility model compared with prior art has the following advantages: 1, cooling element adopts the thermoelectric refrigeration of semiconductor element to replace traditional chlorofluoromethane refrigerant, has effectively overcome the pollution that fluorine Lyons pernicious gas brings to environment. 2, the pole piece sense of current of semiconductor refrigerating assembly is by the controller control change, realized using the two-way temperature incubation function that can refrigeration can heat again in the bigger occasion of the temperature difference. 3, adopt digital display regulator control, be designed with audible-visual annunciator, the accuracy of temperature control height, easy to adjust, indication is bright hasty and careless.

Claims

1, a kind of adjustable thermostat container, constitute by casing, thermoregulating system, it is characterized in that: thermoregulating system is made up of cooling element and controller, and cooling element adopts thermoelectric refrigeration of semiconductor assembly TC, and the pole piece sense of current of semiconductor refrigerating assembly TC is controlled by controller.

2, adjustable thermostat container according to claim 1 is characterized in that: the controller of control semiconductor refrigerating assembly TC is by the relay K of temperature sensor RT, digital display regulator XMT and digital display regulator XMT control ₁, K ₂Form.

3, adjustable thermostat container according to claim 1 is characterized in that: assembly has power switch SA, relay indicating light V on the cabinet panel ₇, V ₈, V ₉, V ₁₀The temperature of numeral display regulator XMT shows charactron 01, lower limit temperature is set adjusting knob 02, on, lower limit temperature is set and is selected tumbler switch 03, ceiling temperature is set adjusting knob 04, aluminium alloy decoration type frame 2 is housed on the outer case 1 of casing, have the chamber door 3 that to open, chamber door backing plate 4, square rubber ring 6 of door and casing back shroud 9, good metal inner tube that is inserted with temperature sensor RT 5 of heat-conductive characteristic and the square rubber ring 7 of inner bag are arranged in the casing, fixing blower fan M is equipped with in metal inner tube 5 back of casing, opening part has the box partition 8 of the energy storage block 10 of being close to metal inner tube 5, be fixed with semiconductor refrigerating assembly TC by the fastening piece 12 that has packing ring 13 on the energy storage board 10, heat radiation backing plate 11, the packing ring 13 outer scatterers 14 that are connected with, the printed-wiring board (PWB) 15 of controller is fixed on digital display regulator XMT back in the casing.

4, according to the described adjustable thermostat container of claim 2, it is characterized in that: the relay K of controller ₁, K ₂Between string advance by resistance R ₅, relay indicating light V ₉, hummer B be in series set sound, the light crossing-signal that transfer in the school as temperature.