# US 2014/0196494 A1 · Heat pumping unit and variants thereof

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- Number: US 2014/0196494 A1
- Document ID: US20140196494A1
- Status: Published application
- Kind: A1
- Application number: 13/740,545
- Filed: 2013-01-14
- Published: 2014-07-17
- Earliest claimed: 2013-01-14
- Inventors: Serguei A. Popov
- Web page: https://patentgrep.com/patent/US20140196494A1

## CPC

- F25B 1/06: with compressor of jet type, e.g. using liquid under pressure ({F25B1/005,} F25B1/10 take precedence)
- F25B 30/02: of the compression type
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS

## Abstract

A heat pumping unit includes a first heat exchanger, a second heat exchanger and a pump. An outlet of the first heat exchanger is connected to a vapor inlet of a liquid jet-ejector. A liquid outlet of the ejector is connected to an inlet of the second heat exchanger. An outlet of the second heat exchanger is connected at the same time to an inlet of the pump and through a pressure reducing device to an inlet of the first heat exchanger. The pump outlet is connected to the liquid-jet ejector liquid inlet.

## Claims

### Claim 1

A heat pumping unit comprising:
a first heat exchanger;
a second heat exchanger;
a pump;
wherein an outlet of the first heat exchanger is connected to a vapor inlet of a liquid jet-ejector, a liquid outlet of the ejector is connected to an inlet of the second heat exchanger, an outlet of the second heat exchanger is connected at the same time to an inlet of the pump and through a pressure reducing device to an inlet of the first heat exchanger, wherein an outlet of the pump is connected to the liquid-jet ejector liquid inlet.

### Claim 2 (depends on 1)

The heat pumping unit of claim 1, further comprising an accumulator connected between the outlet of the first heat exchanger and the vapor inlet of the liquid-jet ejector.

### Claim 3 (depends on 1)

The heat pumping unit of claim 1, further comprising a liquid knock out drum connected between an outlet of the second heat exchanger and the pump inlet and the first heat exchanger inlet.

### Claim 4 (depends on 1)

The heat pumping unit of claim 1 wherein the first heat exchanger is a multi-pass heat exchanger.

### Claim 5 (depends on 1)

The heat pumping unit of claim 1 wherein the first heat exchanger comprises a pair of heat exchangers each having an inlet connected to an outlet of the second heat exchanger through a pressure reducing device, an outlet of each of the pair of heat exchangers coupled to the vapor inlet of the liquid-jet ejector.

### Claim 6 (depends on 1)

The heat pumping unit of claim 1 further comprising a fan to move air through the second heat exchanger.

### Claim 7 (depends on 1)

The heat pumping unit of claim 1 wherein the pressure reducing device comprises a valve.