GB581498A - Improvements in electric heating and cooling systems for horticultural houses and cloches - Google Patents
Improvements in electric heating and cooling systems for horticultural houses and clochesInfo
- Publication number
- GB581498A GB581498A GB11105/44A GB1110544A GB581498A GB 581498 A GB581498 A GB 581498A GB 11105/44 A GB11105/44 A GB 11105/44A GB 1110544 A GB1110544 A GB 1110544A GB 581498 A GB581498 A GB 581498A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- thermostat
- fan
- panel
- heaters
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/26—Electric devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Greenhouses (AREA)
Abstract
581,498. Ventilating buildings. JOHNSON, E. G. June 9, 1944, No. 11105. [Class 137] [Also in Groups XI and XXXV] Air in a horticultural house or the like is maintained between a higher and a lower temperature by an electric fan 15 circulating air over electric heaters 18 on operation of a thermostat at the lower temperature, and when the higher temperature is reached, a second thermostat opens a valve so that the fan draws in and circulates air from the outside, the heater being switched off. Each thermostat has a lag in operation so that it opens and closes at slightly different temperatures. No circulation or heating of air or admission of fresh air takes place between the two temperatures, e.g., 65'-75'F. The air heaters comprising resistance heaters 18 with pins 19 are connected in parallel to terminals 20 and are held by rods 17 below a panel 16 with perforations 23. A motor 13 above panel 16 drives through a shaft 14 a fan 15 below the panel. The roof 10 of the cloche has an opening 12 leading to a duct 11 in which is mounted the motor having ventilation apertures 22 so that fresh air may be drawn through it. A slide valve 24 with apertures 25 is mounted on the lower side of the panel 16 and is moved by a solenoid 27 against a spring 34 so that on operation of a thermostatic switch 33 at the higher temperature, the perforations 23, 25 register and fresh air is drawn in by the fan. The thermostat acts through a cable 28 and a rod 26. When fresh air enters, a ventilator at the lower part of the cloche may be opened by the thermostat 33 to allow air to escape. Air is drawn in centrally and is dispersed sideways. When the temperature falls below 75' the current is cut off and the spring 34 moves the slide 24 so that the apertures no longer register. When the temperature falls below 65', the thermostat 32 switches on the fan and heaters 18. The thermostats are connected in parallel, as shown in Fig. 4. Specification 435,496 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB11105/44A GB581498A (en) | 1944-06-09 | 1944-06-09 | Improvements in electric heating and cooling systems for horticultural houses and cloches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB11105/44A GB581498A (en) | 1944-06-09 | 1944-06-09 | Improvements in electric heating and cooling systems for horticultural houses and cloches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB581498A true GB581498A (en) | 1946-10-15 |
Family
ID=9980127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11105/44A Expired GB581498A (en) | 1944-06-09 | 1944-06-09 | Improvements in electric heating and cooling systems for horticultural houses and cloches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB581498A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107347513A (en) * | 2017-07-31 | 2017-11-17 | 王瑞 | A kind of moveable multifunctional agriculture culture apparatus |
CN110916945A (en) * | 2019-11-04 | 2020-03-27 | 厦门市妇幼保健院(厦门市计划生育服务中心) | Intelligent temperature-control baby incubator |
CN114532127A (en) * | 2022-03-14 | 2022-05-27 | 吉林农业大学 | Winter protection equipment for cold region fruit trees |
-
1944
- 1944-06-09 GB GB11105/44A patent/GB581498A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107347513A (en) * | 2017-07-31 | 2017-11-17 | 王瑞 | A kind of moveable multifunctional agriculture culture apparatus |
CN110916945A (en) * | 2019-11-04 | 2020-03-27 | 厦门市妇幼保健院(厦门市计划生育服务中心) | Intelligent temperature-control baby incubator |
CN114532127A (en) * | 2022-03-14 | 2022-05-27 | 吉林农业大学 | Winter protection equipment for cold region fruit trees |
CN114532127B (en) * | 2022-03-14 | 2023-02-24 | 吉林农业大学 | Winter protection equipment for cold region fruit trees |
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