US3023592A

US3023592A - Combined cooling and heating system with four solenoid valves

Info

Publication number: US3023592A
Application number: US4346A
Authority: US
Inventors: Fred J Schordine
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-01-25
Filing date: 1960-01-25
Publication date: 1962-03-06
Anticipated expiration: 1979-03-06

Description

March 6, 1962 F. J. SCHORDINE COMBINED COOLING AND HEATING SYSTEM WITH FOUR SOLENOID VALVES Filed Jan. 25, 1960 45 2 INVENTOR.

3,023,592 COMBINED COOLEWG I-EATING SYSTEM WITH FOUR SOLENOID VALVES Fred J. Schordine, 134 Waverly Ave, Patchogue, N.Y. Filed Jan. 25, 1960, Ser. No. 4,346 4 Claims. (til. 62324) The present invention relates to improvements in heat pump systems adapted for cooling and heating and, more specifically, it relates to a new and improved system of this type which can be used also as a defrosting device for any refrigeration system.

Hitherto these heat pump systems have required complicated four-way valves of special construction which were difiicult to exchange, expensive to install, heavy, space requiring, and usually not so reliable in operation as to give satisfaction to users for considerable periods of time.

Therefore, one object of the present invention is the pro vision of a cooling and heating system of the character described which instead of an expensive four-way valve uses only four ordinary, simple solenoid valves that will control the heating and cooling of the system and that also can be used for defrosting any refrigeration system at any set temperature. Moreover, my new and improved system can be used in connect-ion with any size, model, make or unit in the field of refrigeration or air conditioning, either automatical or manual.

Another object of the present invention is the provision of a cooling and heating system of the character described which is highly reliable and fool-proof in operation, and which in the service field will save time and money to the user, which allows a simple, fast and easy exchange of any one of the solenoid valves, and which makes it possible for service personnel to keep on hand only standard solenoid valves, instead of high-priced special valves as has been necessary before my invention.

A further object of the present invention is the provision of a cooling and heating system of the character described which can be used on any condensing unit, for winter heating and summer cooling, all in one heat pump system, and which is durable and well adapted to withstand the rough usage to which devices of this type ordinarily are subjected.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangements of parts without departing from the spirit of the invention as claimed.

In the accompanying drawing a preferred form of the invention has been shown.

In said drawing the single figure is a schematic illustration of a preferred embodiment of my invention.

In the drawing the numerals 1, 2, 3 and 4 denote four separate solenoid valves, which may be of standard construction, and the numeral 5 denotes a compressor, which may be of any suitable type or construction. Only one compressor 5 is necessary for the cooling and heating cycles. T he compressor 5 has an outlet 7 and an inlet 10. The outlet 7 is connected by a pipe line 11 to

branch lines

15 and 16, which terminate at the solenoid valves 1 and 2 respectively, while the inlet is connected by a line 17 to branch lines 21 and 22 which terminate at the solenoid valves 3 and 4 respectively.

The solenoid valve 1 controls a line 23, which is divided at 24 into

branch lines

25 and 27. The branch line 25 leads to, and is controlled by, the valve 3, whereas the branch line 27 leads to a condenser 29.

The valve 2 controls a line 30, which is divided at 31 into

branch lines

32 and 33. The line 32 leads to, and is tates Patent 0 controlled by, the valve 4, whereas the line 33 leads to a coil 34 of a tray 35.

A line 37 connects the end of the coil 34 to a coil 38 of a unit 39, and a reduced line 40 connects the lower end of the coil 38 to the condenser 29.

During a heating cycle the unit 39 is a heating unit, and the solenoid valves 2 and 3 are open, while the solenoid valves 1 and 4 are closed, so that a heating medium will flow from the outlet 7 of the compressor 5 through the

lines

11 and 16, the valve 2, the line 33, the coil 34, the line 37, the coil 38, the reduced line 40, the condenser 29, the

lines

27 and 25, the valve 3, and the lines 21 and 17 to the inlet 10 of the compressor 5.

During the cooling cycle the unit 39 is an evaporator unit, and the solenoid valves 1 and 4 are open, while the solenoid valves 2 and 3 are closed, so that a cooling medium will flow from the outlet 7 of the compressor 5 through the

lines

11 and 15, the valve 1, the line 27, the condenser 29, the reduced line 40, the coil 38, the line 37, the coil 34, the

lines

33 and 32, the valve 4, and the lines 22 and 17 to the inlet 10 of the compressor 5.

The tray 35 is heated to melt ice and snow at the bottom of the unit 39, so that water derived from the melting will accumulate at the bottom of the tray 35, from where it can be drained ofi.

The solenoid valves 1, 2, 3 and 4 in the present instance are so constructed that they open when energized, and a wiring diagram for the wiring of these valves is shown in the drawing. There it will be seen that a pair of main wires 41 and 42 connect a source of electric current (not shown) to two pairs of

branch wires

43 and 44 as well as 45 and 47 which are connected to circuit breakers 50 and 51 respectively. The circuit breakers 50 and 51 may be any suitable switches that are operated manually or automatically or thermostatically. If both switches 50 and 51 are open, as shown, the valves 1, 2, 3 and 4 are closed, and the system does not operate. If the switch 50 is closed and the switch 51 is open, the valves 2 and 3 are open, and the valves 1 and 4 are closed so that the heating cycle can openate as referred to hereinbefore. If the switch 51 is open and the switch 50 is closed, the valves 1 and 4 are open, and the valves 2 and 3 are closed. so that the cooling cycle can operate.

The switch 50 is connected by wires 53 and 54 to the solenoid of the valve 2, and by wires 55 and 57, which branch off the wires 53 and 54- respectively, to the solenoid of the valve 3. The switch 51 is connected by wires and 61 to the valve 1, and by

wires

62 and 63, which branch oii the wires 60 and 61 respectively, to the solenoid of the valve 4.

Since certain changes may be made in the above article and different embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which as a matter of language might be said to fall therebetween.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent is:

1. A combined cooling and heating system comprising a compressor, a condenser coil, an evaporator coil, a tray beneath said evaporator, an auxiliary coil connected to said evaporator coil and extended through said tray, a first pipe line connected to an outlet of said compressor and forming two branches, 2. second pipe line connected to an intake of said compressor and forming two branches, a solenoid valve mounted into each one of the branch lines of the first and the second pipe line and controlling a branch line, a pair of third pipe lines connecting the ends of the branch lines of said first pipe line to the ends of the branch lines of said second pipe line, a fourth pipe line connecting one of said third pipe lines to said auxiliary coil, a reduced line connecting said evaporator to said condenser, a fifth pipe line connecting said condenser to one of said third pipe lines and electrical circuits connected to said solenoid valves for energizing the same.

2. A combined cooling and heating system comprising a compressor, a condenser coil, an evaporator coil, a tray beneath said evaporator coil, an auxiliary coil extending through said tray, a rectangle formed by pipe portions having a pair of parallel longitudinal pipe portions and a pair of short pipe portions, a first pair of shut-01f valves in spaced relation to each other being provided in a first one of said longitudinal pipe portions, a second pair of shut-off valves in spaced relation to each other being provided in asecond one of said longitudinal pipe portions, a feed pipe connecting a section of said first longitudinal pipe portion intermediate said first pair of shut-01f valves to an outlet of said compressor, a return pipe connecting a section of said second longitudinal pipe portion intermediate said second pair of shut-off valves to an inlet of said compressor, a first connection pipe connecting one end of said first longitudinal pipe portion to one end of said condenser, a second connection pipe connecting the other end of said first longitudinal pipe portion to one end of said auxiliary coil, a third connection pipe connecting the other end of said auxiliary coil to one terminal of said evaporator, and a reduced pipe connecting the other end of said evaporator to said condenser.

3. A combined cooling and heating system comprisising a compressor, a first heat exchanger, a second heat exchanger, a drip tray mounted beneath said second heat exchanger, a third heat exchanger arranged in said tray, two pairs of shut-off valves of which a first pair is connected to the intake of said compressor and a second pair is connected to the exhaust of said compressor, a pair of first conduits each of which connecting one of said first valves to one of said second valves, a second conduit connecting one end of said first heat exchanger to one of said first conduits, a third conduit connecting one end of said third heat exchanger to the other one of said first conduits, a fourth conduit connecting the other end of said third heat exchanger to one end of said second heat exchanger, and a reduced pipe expansion extending the other end of said second heat exchanger to said first heat exchanger.

4. A combined cooling and heating system comprising a compressor, a first heat exchanger, four solenoid shut-oh valves, a second heat exchanger, a drip tray for collecting moisture and frost removed from said second heat exchanger, a third heat exchanger extended through said tray, T-conduits connecting said valves to the intake and the exhaust of said compressor as Well as to one end of each one of said first and third heat exchanger, a pipe connecting the other end of said third heat exchanger to one end of said second heat exchanger, a reduced pipe expansion connecting the other end of said second heat exchanger to the other end of said first heat exchanger, and electrical means for energizing said solenoid valves independently of each other for alternatingly opening and closing the same.

References Cited in the file of this patent UNITED STATES PATENTS 2,428,876 Hawkins Oct. 14, 1947 2,441,885 Kemler May 18, 1948 2,589,384 Hopkins Mar. 18, 1952 2,653,453 Williams Sept. 29, 1953 2,955,439 Pinter Oct. 11, 1960 FOREIGN PATENTS 1,200,393 France June 29, 1959