Back to results
US 10,852,007 B2Granted
Heat pump device
AssigneeMitsubishi Electric Corporation
InventorMitsuru Kawashima
Life of this patent
Estimating the term…
Abstract
A heat pump device can discharge air in a heat medium circuit regardless of the height positions of two bodies of the heat pump device and prevents refrigerant outflow when the refrigerant enters the heat medium circuit in the liquid heat exchanger. A pump causes the liquid heat medium to flow in a predetermined circulatory direction in a heat medium pipe, and a liquid heat exchanger, a first air vent valve and a second air vent valve are arranged in this order along a circulatory direction.
Claims13
A heat pump device comprising:
- a compressor configured to compress refrigerant;
- a decompressor configured to decompress the refrigerant;
- an air heat exchanger configured to exchange heat between the refrigerant and air;
- a liquid heat exchanger configured to exchange heat between the refrigerant and liquid heat medium;
- a refrigerant pipe connecting the compressor, the decompressor, the air heat exchanger and the liquid heat exchanger circularly, wherein the refrigerant pipe is filled with the refrigerant;
- a pump configured to cause the liquid heat medium to flow in the liquid heat exchanger;
- a heat medium pipe connecting the liquid heat exchanger and the pump circularly, wherein the heat medium pipe is filled with the liquid heat medium;
- a first air vent valve and a second air vent valve which are able to discharge gas in the heat medium pipe outside, wherein the first air vent valve and the second air vent valve are self-control valves;
- a first body housing the compressor, the decompressor, the air heat exchanger, the liquid heat exchanger, the refrigerant pipe and the first air vent valve, and
- a second body arranged outside of the first body, wherein the second body houses the second air vent valve, and wherein
- the pump is configured to cause the liquid heat medium to flow in a predetermined circulatory direction in the heat medium pipe,
- the liquid heat exchanger, the first air vent valve and the second air vent valve arranged in this order along the circulatory direction,
- an air passage is formed in the first body, and the air passage is configured to discharge air, taken from the outside of the first body, to the outside of the first body after exchanging heat of the air in the air heat exchanger;
- and
- the first air vent valve is arranged on a windward side of the air heat exchanger in the air passage.
12 more elements
A heat pump device comprising:
- a compressor configured to compress refrigerant;
- a decompressor configured to decompress the refrigerant;
- an air heat exchanger configured to exchange heat between the refrigerant and air;
- a liquid heat exchanger configured to exchange heat between the refrigerant and liquid heat medium;
- a refrigerant pipe connecting the compressor, the decompressor, the air heat exchanger and the liquid heat exchanger circularly, wherein the refrigerant pipe is filled with the refrigerant;
- a pump configured to cause the liquid heat medium to flow in the liquid heat exchanger;
- a heat medium pipe connecting the liquid heat exchanger and the pump circularly, wherein the heat medium pipe is filled with the liquid heat medium;
- a first air vent valve and a second air vent valve which are able to discharge gas in the heat medium pipe outside, wherein the first air vent valve and the second air vent valve are self-control valves;
- a first body housing the compressor, the decompressor, the air heat exchanger, the liquid heat exchanger, the refrigerant pipe and the first air vent valve;
- a second body arranged outside of the first body, wherein the second body houses the second air vent valve;
- a first shut-off valve capable of closing the heat medium pipe;
- a refrigerant pressure sensor configured to detect an internal pressure of the refrigerant pipe, and
- a heat medium pressure sensor configured to detect an internal pressure of the heat medium pipe, wherein
- the pump is configured to cause the liquid heat medium to flow in a predetermined circulatory direction in the heat medium pipe,
- the first shut-off valve, the liquid heat exchanger, the first air vent valve, and the second air vent valve arranged in this order along the circulatory direction, and
- the first shut-off valve closes the heat medium pipe when the internal pressure of the refrigerant pipe is equal to or less than a preset refrigerant pressure reference value and the internal pressure of the heat medium pipe is equal to or more than a preset heat medium pressure reference value.
13 more elements
A heat pump device comprising:
- a compressor configured to compress refrigerant;
- a decompressor configured to decompress the refrigerant;
- an air heat exchanger configured to exchange heat between the refrigerant and air;
- a liquid heat exchanger configured to exchange heat between the refrigerant and liquid heat medium;
- a refrigerant pipe connecting the compressor, the decompressor, the air heat exchanger and the liquid heat exchanger circularly, wherein the refrigerant pipe is filled with the refrigerant;
- a pump configured to cause the liquid heat medium to flow in the liquid heat exchanger;
- a heat medium pipe connecting the liquid heat exchanger and the pump circularly, wherein the heat medium pipe is filled with the liquid heat medium;
- a first air vent valve and a second air vent valve which are able to discharge gas in the heat medium pipe outside, wherein the first air vent valve and the second air vent valve are self-control valves;
- a first body housing the compressor, the decompressor, the air heat exchanger, the liquid heat exchanger, the refrigerant pipe and the first air vent valve;
- a second body arranged outside of the first body, wherein the second body houses the second air vent valve, and
- a first shut-off valve capable of closing the heat medium pipe, wherein
- the pump is configured to cause the liquid heat medium to flow in a predetermined circulatory direction in the heat medium pipe,
- the first shut-off valve, the liquid heat exchanger, the first air vent valve, and the second air vent valve arranged in this order along the circulatory direction,
- the heat medium pipe further includes a branch pipe housed in the second body, connected to the heat medium pipe, and extending vertically upward;
- the second air vent valve is arranged on an uppermost end portion of the branch pipe, and
- the first shut-off valve is arranged in the middle of the branch pipe.
13 more elements
Dependencies are inferred from the claim text.