GB2228989A - Apparatus for maintaining a desired temperature in a chamber - Google Patents
Apparatus for maintaining a desired temperature in a chamber Download PDFInfo
- Publication number
- GB2228989A GB2228989A GB8905613A GB8905613A GB2228989A GB 2228989 A GB2228989 A GB 2228989A GB 8905613 A GB8905613 A GB 8905613A GB 8905613 A GB8905613 A GB 8905613A GB 2228989 A GB2228989 A GB 2228989A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluid
- fluid path
- chamber
- heating
- temperature
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/14—Incubators; Climatic chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
- F25D31/005—Combined cooling and heating devices
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
- B01L1/02—Air-pressure chambers; Air-locks therefor
- B01L1/025—Environmental chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
- F25D2317/0682—Two or more fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
Abstract
Apparatus (10) for maintaining a desired temperature in a chamber (12) defined by said apparatus, wherein the apparatus comprises means (14) isolated from said chamber, heating means (16, 17), first fluid drive means (26) to drive fluid along a first fluid path, such that said fluid being driven along said first fluid path is cooled by said cooling means, and second fluid drive means (28) to drive fluid along a second fluid path (24), such that said fluid being driven along said second fluid path is heated by said heating means. The first fluid path and said second fluid path are arranged so that the fluid being driven along said paths is discharged into said chamber. The apparatus also comprises control means adapted to sense the temperature in the chamber and selectively to operate said first and second fluid drive means to achieve said desired temperature. <IMAGE>
Description
APPARATUS FOR MAINTAINING A DESIRED TEMPERATURE IN A CHAMBER
CHAMBER This apparatus relates to apparatus for maintaining a desired temperature in a chamber. More particularly, this invention relates to incubators and, in particular to low temperature incubators.
Low temperature incubators are used in the pharmaceutical and allied industries in order to grow cultures of bacteria and the like. These cultures have to be grown in environments in which the temperature in accurately controlled.
In prior art low temperature incubators, the temperature was kept low by means of compressors. However, these have the disadvantage that the temperature control is not very accurate and the temperature within the incubator could vary by 5 to lOOC (due to the intermittent use of the compressor).
One way of improving the temperature control is to run the compressor continuously to provide a steady state low temperature and to provide a heater to blow warm air across the evaporator. The warm air provided a more sensitive temperature control, but the fact that the compressor has to be run continuously means that there is a large power consumption and also that it collects ice quickly and has to be de-iced regularly on a frequent basis. The length of time between de-icings is usually in the range of several days to about two or three weeks. This is obviously not very satisfactory when it is necessary to grow cultures for several months.
It is an object of this invention to provide improved apparatus which overcomes the above problems.
According to one aspect of this invention there is provided an apparatus for maintaining desired temperature in a chamber defined by said apparatus, wherein the apparatus comprises: cooling means isolated from said chamber; first fluid drive means to drive fluid along a first fluid path such that said fluid being driven along said first fluid path is cooled by said cooling means; heating means, second fluid drive means to drive fluid along a second fluid path such that said fluid being driven along said second fluid path is heated by said heating means; said first path being separate from said second fluid path and said fluid paths being arranged such that fluid being driven along said paths is discharged separately into said chamber; and control means adapted to sense the temperature within the chamber and selectively to operate said first and second fluid drive means to achieve said desired temperature.
Preferably said chamber is thermally insulated from said cooling means and said cooling means comprises a sensor adapted to sense the temperature within said first fluid path and to control the cooling means to achieve a cooling temperature in said first fluid path below said level.
Conveniently said first fluid path is defined adjacent said cooling means and said second fluid path is defined adjacent said heating means.
Desirably when said control means operates said second fluid drive means said control means operates said heating means simultaneously therewith.
In the preferred embodiment, the first fluid path is defined between the cooling means and the heating means and the second fluid path is defined between the first fluid path and the heating means.
The first fluid drive means may be carried by a separator member which separates the first and second fluid paths. The separator member is preferably made of a material such that the first and second fluid paths are normally insulated from each other. Conveniently, the separator member is substantially planar and may be of rectangular configuration.
The cooling means may comprise a refrigerator member which is conveniently substantially planar and may be of rectangular configuration.
The refrigerator member may be in the form of an evaporator and may be of substantially the same size as the separator member. The first fluid path may be defined between the separator member and the refrigerator member.
The heating means may comprise a heating member which is conveniently substantially planar and may be of a rectangular configuration. The heating member may carry a heating coil and may be substantially the same size as the separator member. The second fluid path may be defined between the separator member and the heating member.
The second fluid drive means may be carried by the heating member. The heating member may define an aperture such that said first fluid drive means is disposed in register with said aperture to enable fluid to flow through said aperature to said first fluid path.
Preferably, the first and second fluid drive means comprise respectively first and second fans each of which is conveniently driven by a motor.
Control means may be provided to control the first ad second fluid drive means. The control means may also control the heating means. Preferably the control means is in the form of at least one thermostat electrically connected to the first fluid drive means, the second fluid drive means and the heating means.
In the preferred embodiment of this invention, the first and second fluid drive means are operated alternatively as the temperature within the chamber reaches desired temperature.
According to another aspect of this invention, there is provided an apparatus for maintaining a desired temperature in a chamber defined by said apparatus, wherein said apparatus comprises : cooling means; heating means disposed adjacent said cooling means; a separator member disposed between said heating means and said cooling means to define a first fluid path between said cooling means and said separator member and to define a second fluid path between said separator member and said heating means wherein said first and second fluid paths discharge separately into said chamber; first fluid drive means to drive fluid along said first fluid path; second fluid drive means to drive fluid along said second fluid path; and control means to sense the temperature within said chamber and selectively to operate said first fluid drive means, said second fluid drive means and said heating means simultaneously with said second fluid drive means.
According to another aspect of this invention there is provided a method of maintaining a desired temperature in a chamber comprising; driving fluid by first fluid drive means along a first fluid path; driving fluid by second fluid drive means along a second fluid path separate from said first fluid path; discharging separately into said chamber said fluid being driven along said fluid paths; cooling by said cooling means said fluid being drien along said first fluid path; heating by heating means said fluid being driven along said second fluid path, sensing the temperature within the chamber and selectively operating said first and second fluid drive means to achieve said desired temperature.
Preferably, the method comprises sensing the temperature within said first fluid path and controlling said cooling means to achieve a cooling temperature in said first fluid path below said desire temperature in said chamber.
Conveniently said cooling means is operated intermittently to achieve said cooling temperature.
Desirably when said second fluid drive means is operated said heating means is operated simultaneously therewith.
Reference is now made to the accompanying drawings in which
Figure 1 is an isometric view of the apparatus according to the invention in which the heating means and the cooling means are shown spaced apart for ease of reference;
Figure 2 is a view along the lines II - II in Figure 1,
Figure 3 is a view along the lines III-III
in Figure 1;
Figure 4d is a sketch of a graph showing temperature
variations for the chamber;
Figure 4b is a sketch of a graph showing temperature
variations of the cooling means.
Referring to the drawings, Figure 1 shows apparatus for maintaiing a stable temperature in a chamber. The apparatus is in the form of a low temperature incubator 10. The incubator 10 defines a chamber 12, and comprises cooling means in the form of an evaporator 14, and a compressor (not shown) to pump fluid around the evaporator 14, heating means in the form of a heating member 16 carrying a heating coil 17, and a separator member 18. The separator member 18 isolates and thermally insulates the evaporator 16 from the heating means and the inside of the chamber 12.
As can be seen from the drawings the evaporator 14, heating member 16 and separator member 18 are all substantially the same size and are substantially planar and of a rectangular configuration. The separator member 18 carries flanges 20,21,22. As can be seen in Figures 2 and 3, the evaporator 14 is received in a recess defined between the flanges 20, 21, 22. The heating member carries flanges 23 and 24 which define a recess to receive the separator member 18. The reason for this will be explained below.
The separator member 18 carries first fluid drive means in the form of a first motorised fan 26. The heating member 16 carries second fluid drive means in the form of a second motorised fan 28. The heating member 16 also defines an aperture 30 disposed in register with the first fan 26.
A first fluid path 32 (see Figure 2) is defined between the evaporator 14 and the separator member 18. When the first fan 26 is operating, air flows from the chamber 12 through the aperture 30 driven by the first fan 26.
The air passes through the first fan 26 and is driven along the first fluid path in the direction indicated by the arrows A. The evaporator 14 will cool the air driven along the first fluid path 32.
A second fluid path 34 (see Figure 3) is defined between the heating member 16 and the separator member 18.
When the second fan 28 is operating, air flows from the chamber and is driven by the second fan 28 along the second fluid path 28 in the direction indicated by the arrows B.
In the embodiment described when the second fan 28 is operating, the heating coil 17 will also be operating to heat up the air flowing along second fluid path 34.
The cold air being discharged from the first fluid path 32 at first exit 36 alternates with the hot air being distcharged from the second fluid path 34 at second exit 38 to maintain a desired temperature in the chamber 12.
Control means in the form of a main thermostat (not shown) is disposed within the chamber 12 and is electrically connected to the first fan 26, the second fan 28, the heating coil 17 to control the temperature in the chamber 12.
Sensing means in the form of a secondary thermostat (not shown) to control the evaporator 14 is also provided.
This embodiment of the invention will now be described in operation. If it is assumed that when the incubator 10 is switched on, it is at ambient temperture (ie approximately 250C), then the main thermostat will switch on the first fan 26 and the secondary thermostat will switch on the evaporator 14 to bring the temperature in the chamber 12 down to the desired working temperature, (for example approximately 50C). The secondary thermostat will be set at the desired cooling temperature of the evaporator 14 which will be less than the working temperature in the chamber 14. For example, the operating temperature of the evaporator could be approximately -10 C.
When the first fan 26 is switched on, air will be driven from the chamber 12 along the first fluid path 32 (see Figure 2) and will be discharged therefrom into the chamber 12 at exit 36. While the air is being driven along the first fluid path 32, it will be cooled by the evaporator 14. Thus, the cold air being discharged from the first fluid path 32 will cause the temperature in the chamber 12 to fall.
When the temperature in the chamber 12 has fallen to the desired working temperature inside the chamber 12, the main thermostat will switch off the first fan 26. The temperature within the chamber continues to fall and as soon as it falls below 50C, the main thermostat switches on the heating coil 17 and the second fan 28. Air is then driven from the chamber 12 along the second fluid path 34 where it is warmed by the heating coil 17.
The air which is discharged from the second fluid path 34 at exit 38 is warmed by the heating coil 17 and causes the temperature within the chamber to rise. As soon as the temperature of the chamber reaches 50C, the thermostat switches off the heating coil 17 and the second fan 28.
The temperature within the chamber 12 continues to rise and as soon as it rises above 50C, the thermostat switches on the first fan 26 to drive air along the first fluid path 32 past the evaporator 14 to cause the temperature in the chamber 12 to fall.
As will be appreciated, the first fan 26 is operated alternately with the second fan 28 and the heating coil 17.
This causes the temperature within the chamber 12 to oscillate between the two temperatures, either side of the desired working temperature within the chamber 12. The use of two fans 26, 28, means that the apparatus is very sensitive and an oscillation of temperature of 0.05or can be achieved although O.loC is more usual.
The provision of the flanges 20, 21 and 22 on the separator member 18 to receive the evaporator 14 means that the first fluid path is enclosed on five sides by the evaporator 14, the separator member 18 and the flanges 20, 21, 22. Thus, cold air cannot discharge from the first fluid path 32 at the sides of the fluid path 26 and can only do so at the exit 36. This prevents air which has not been completely cooled from being re-circulated into the chamber 12. Similarly, the flanges 23, 24 on the heating member 16 prevent the discharge of air from the second fluid path 34 at the sides thereof, which means that air which has not been warmed completely cannot be re-circulated into the chamber 12.
The evaporator 14 operates independently from the rest of the incubator 10. The evaporator 14 is set to operate at a cooling temperature below that of the desired working temperature of the chamber 12. As indicated above, the cooling temperature of the evaporator is, for example, -10 C.
When the incubator 10 is first switched on, the secondary thermostat causes the evaporator 14 to cool down to -100C the temperature in the first fluid path 32.
When this temperature has been reached, the secondary thermostat switches off the compressor pumping fluid to the evaporator 14 and the temperature continues to fall until it reaches a minimum and it will then begin to rise again. As soon as the temperature has risen to -10 C, the thermostat causes the compressor pumping fluid to the evaporator 14 to switch on again. The temperature rises until it reaches a maximum and then falls. Thus, the temperature in the first fluid path 32 oscillates about the cooling temperature.
These oscillations are relatively large in comparison to those in the chamber 12, and could be approximately 10 to 150 C.
Figures 4a and 4b show the variations in temperature of the chamber and in the immediate vicinity of the evaporator 14 when the incubator is running and has reached steady working conditions.
At point X in Figure 4a, the temperature within the chamber 12 is rising and is above the desired working temperature of 50C. This means that the fan 26 is switched on and is driving air along the first fluid path 26. Thus, the cold air which is discharged from the first fluid path 32 starts to slow down the increase in temperature and eventually causes the temperature to fall, as at point Y.
When the temperature has fallen until the chamber 12 is at 50C, the thermostat switches off the first fan 26. The temperature continues to fall which causes the thermostat to switch on the heating coil 17 and the second fan 28 to drive air along the second fluid path 34 to be heated by the heating coil 17. The air which is discharged from the second fluid path 34 slows down the cooling until at Z, the temperature starts to rise gain to the desired working temperature and the thermostat then switches off the heating coil 17 and the second fan 28 and switches on the first fan 26. The process is then repeated.
The temperature of the chamber 12 can be accurately controlled by a LEEC Solid State Proportional Temperature
Controller. This is a zero-switching TRIAC controller circuit which uses the signal from a thermistor sensor in the chamber 12 to control the current supplied to the heating coil 17. The heating coil can be in the form of an electrical reistance heating element. A suitable circuit which can be used is an integrated circuit such as made by
Texas Instruments or Fairchild.
Referring to Figure 4b, which relates to the evaporator 14 only, the graph shown is similar to that in Figure 4a except that the temperature variation above and below the cooling temperature in the first fluid path 32 is larger than for the desired temperature in the chamber 12.
This invention has the advantage that it allows the temperature within the chamber 12 to be accurate to within 0-050C and also does not have the problem of ice being collected on the evaporator 14 at an excessive rate.
Furthermore, the fact that the compressor pumping fluid to the evaporator 14 and the heating coil 16 are not in use continuously means that less power is used and so the incubator is less expensive to run than prior art incubators.
Claims (20)
1. Apparatus for maintaining a desired temperature in a
chamber defined by said apparatus, wherein said
apparatus comprises: cooling means isolated from said
chamber; first fluid drive means to drive fluid
along a first fluid path such that said fluid being
driven along said first fluid path is cooled by said
cooling means; heating means; second fluid drive
means to drive fluid along a second fluid path such
that said fluid bring driven along said second fluid
path is heated by said heating means; said first,
fluid path being separate from said second fluid path
and said fluid paths being arranged such that fluid
being driven along said paths is discharged
separately into said chamber; and control means
adapted to sense the temperature within the chamber
and selectively to operate said first and second fluid
drive means to achieve said desired temperature.
2. Apparatus according to Claim 1 wherein said chamber is
thermally insulated from said cooling means and said
cooling means comprises a sensor adapted to sense
the temperature within said first fluid path and to
control the cooling means to achieve a cooling
temperature in said first fluid path below said desired
temperature in said chamber.
3. Apparatus according to Claim 1 or 2 wherein said
first fluid path is defined adjacent said cooling means
and said second fluid path is defined adjacent said
heating means.
4. Apparatus according to any preceding claim wherein when
said control means operates said second fluid drive
means said control means operates said heating means
simultaneously therewith.
5. Apparatus according to any preceding claim whererein the first fluid path is defined between the cooling
means and the heating means and the second fluid path
is defined between said first fluid path and said
heating means.
6. Apparatus according to any preceding claim wherein
the first fluid drive means is carried by a
separator member which separates the first and second
fluid paths, and the separator member is made of a
material such the first and second fluid paths are
thermally insulated from each other.
7. Apparatus according to Claim 6 wherein the cooling
means comprises a refrigerator member, and the first
fluid path is defined between the refrigerator member
and the separator member.
8. Apparatus according to Claim 7 wherein the refrigerator
member is in the form of an evaporator which is
substantially planar and of a rectangular
configuration.
9. Apparatus according to Claim 6 or 7 wherein the heating
means comprises a heating member and the second fluid
path is defined between the separator member and the
heating member.
10. Apparatus according to Claim 9 wherein the heating
member carries a heating coil and the heating member is
substantially planar and of a rectangular
configuration.
11. Apparatus according to Claim 9 or 10 wherein the second
fluid drive means is carried by the heating member
and the heating member defines an aperture such that
the first fluid drive means is disposed in register
with the aperture to enable fluid to flow through
said aperture to said first fluid path.
12. Apparatus according to any of Claims 9 to 11 wherein
the separator member is substantially planar and of
a rectangular configuration and is substantially the
same size as the refrigerator member and the heating
size as the refrigerator member and the heating
member.
13 . Apparatus according to any preceding claim wherein the
first and second fluid drive means comprise
respectively first and second fans powered by motors.
14. Apparatus for maintaining a desired temperature in a
chamber defined by said apparatus, wherein said
apparatus comprises : cooling means; heating means
disposed adjacent said cooling means; a separator
member disposed between said heating means and said
cooling means to define a first fluid path between
said cooling means and said separator member and to
define a second fluid path between said separator
member and said heating means wherein said first and
second fluid paths discharge separately into said
chamber; first fluid drive means to drive fluid along
said first fluid path; second fluid drive means to
drive fluid along said second fluid path; and control
means to sense the temperature within said chamber
and selectively to operate said first fluid drive
means, said second fluid drive means and said heating
means simultaneously with said second fluid drive
means.
15. A method of maintaining a desired temperature in a
chamber comprising driving fluid by first fluid drive
means along first fluid path; driving fluid by
second drive means along a second fluid path separate
from said first fluid path; discharging separately
into said chamber said fluid being driven along said
fluid paths; cooling by cooling means said fluid
being driven along said first fluid path; heating by
heating means said fluid being driven along said
second fluid path; sensing the temperature within the
chamber and selectively operating said first and
second fluid drive means to achieve said desired
temperature.
16. A method according to Claim 2 further comprising
sensing the temperature within said first fluid
path and controlling said means to achieve a cooling
temperature in said first fluid path below said
desired temperature in said chamber.
17. A method according to Claim 16 wherein said cooling
means is operated intermittently to achieve said
cooling temperature.
18. A method according to any of Claims 15 to 17 wherein
when said second fluid drive means is operated said
heating means is operated simultaneously therewith.
19. Apparatus for maintaining a desired temperature in a
chamber substantially as herein described with
reference to and as shown in the accompanying
drawings.
20. A method of maintaining a desired temperature within
a chamber substantially as herein described with
reference to and as shown in the accompanying
drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8905613A GB2228989B (en) | 1989-03-11 | 1989-03-11 | Apparatus for maintaining a desired temperature in a chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8905613A GB2228989B (en) | 1989-03-11 | 1989-03-11 | Apparatus for maintaining a desired temperature in a chamber |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8905613D0 GB8905613D0 (en) | 1989-04-26 |
| GB2228989A true GB2228989A (en) | 1990-09-12 |
| GB2228989B GB2228989B (en) | 1992-11-25 |
Family
ID=10653159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8905613A Expired - Lifetime GB2228989B (en) | 1989-03-11 | 1989-03-11 | Apparatus for maintaining a desired temperature in a chamber |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2228989B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1897935A3 (en) * | 2001-01-26 | 2008-04-09 | Liconic Ag | Air-conditioned storage cabinet |
| EP2180038A2 (en) * | 2008-10-27 | 2010-04-28 | Société J.F. Cesbron Holding | Installation for generating a climatic environment comprising at least one environmental research cell capable of receiving a sample to be studied |
| CN102080045A (en) * | 2009-11-30 | 2011-06-01 | 三洋电机株式会社 | Incubator |
| CN102213965A (en) * | 2011-04-13 | 2011-10-12 | 苏州捷美电子有限公司 | Thermostatic equipment and control method thereof |
| EP2687797A1 (en) * | 2012-07-16 | 2014-01-22 | Thermosecure medical equipment GmbH | Transport and storage container for temperature-sensitive goods |
| US8857208B2 (en) | 2007-03-20 | 2014-10-14 | Liconic Ag | Automated substance storage |
| US9995525B2 (en) | 2009-01-19 | 2018-06-12 | Liconic Ag | Low-temperature automated storage for laboratory samples with automated access |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1434356A (en) * | 1972-09-16 | 1976-05-05 | Hillier C N | Temperature controlled cabinets |
| GB1529122A (en) * | 1976-02-05 | 1978-10-18 | Rockwell International Corp | Temperature control apparatus |
| EP0061708A1 (en) * | 1981-03-26 | 1982-10-06 | Kunststoff- und Kältetechnik Grosskopf GmbH | Refrigerator lorry with two compartments |
-
1989
- 1989-03-11 GB GB8905613A patent/GB2228989B/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1434356A (en) * | 1972-09-16 | 1976-05-05 | Hillier C N | Temperature controlled cabinets |
| GB1529122A (en) * | 1976-02-05 | 1978-10-18 | Rockwell International Corp | Temperature control apparatus |
| EP0061708A1 (en) * | 1981-03-26 | 1982-10-06 | Kunststoff- und Kältetechnik Grosskopf GmbH | Refrigerator lorry with two compartments |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7544329B2 (en) | 2001-01-26 | 2009-06-09 | Liconic Ag | Air-conditioned storage cupboard |
| EP1897935A3 (en) * | 2001-01-26 | 2008-04-09 | Liconic Ag | Air-conditioned storage cabinet |
| US8857208B2 (en) | 2007-03-20 | 2014-10-14 | Liconic Ag | Automated substance storage |
| EP2180038A2 (en) * | 2008-10-27 | 2010-04-28 | Société J.F. Cesbron Holding | Installation for generating a climatic environment comprising at least one environmental research cell capable of receiving a sample to be studied |
| FR2937653A1 (en) * | 2008-10-27 | 2010-04-30 | J F Cesbron Holding Soc | GENERATING APPARATUS FOR A CLIMATIC ENVIRONMENT COMPRISING AT LEAST ONE ENVIRONMENTAL STUDY CELL SUITABLE FOR RECEIVING A SAMPLE TO BE STUDIED |
| EP2180038A3 (en) * | 2008-10-27 | 2010-09-29 | Société J.F. Cesbron Holding | Installation for generating a climatic environment comprising at least one environmental research cell capable of receiving a sample to be studied |
| US10792662B2 (en) | 2009-01-19 | 2020-10-06 | Liconic Ag | Low-temperature automated storage for laboratory samples with automated access |
| US9995525B2 (en) | 2009-01-19 | 2018-06-12 | Liconic Ag | Low-temperature automated storage for laboratory samples with automated access |
| EP2327759A1 (en) * | 2009-11-30 | 2011-06-01 | SANYO Electric Co., Ltd. | Incubator |
| US8733117B2 (en) | 2009-11-30 | 2014-05-27 | Panasonic Healthcare Co., Ltd. | Incubator |
| KR101241548B1 (en) * | 2009-11-30 | 2013-03-11 | 파나소닉 헬스케어 주식회사 | Incubator |
| CN102080045A (en) * | 2009-11-30 | 2011-06-01 | 三洋电机株式会社 | Incubator |
| CN102213965B (en) * | 2011-04-13 | 2013-08-14 | 苏州捷美电子有限公司 | Thermostatic equipment and control method thereof |
| CN102213965A (en) * | 2011-04-13 | 2011-10-12 | 苏州捷美电子有限公司 | Thermostatic equipment and control method thereof |
| EP2687797A1 (en) * | 2012-07-16 | 2014-01-22 | Thermosecure medical equipment GmbH | Transport and storage container for temperature-sensitive goods |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2228989B (en) | 1992-11-25 |
| GB8905613D0 (en) | 1989-04-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19970311 |