JP2013530375A5

JP2013530375A5 -

Info

Publication number: JP2013530375A5
Application number: JP2013518304A
Authority: JP
Filing date: 2011-07-01
Publication date: 2014-08-21
Anticipated expiration: 2031-07-01

Claims

A heat pump system for raising the temperature of a load containing liquid indoors to at least a desired temperature,
A first working fluid circuit including an outdoor unit configured to receive thermal energy from an external thermal energy source, wherein if the temperature of the load is lower than an intermediate temperature, some of the thermal energy is A first working fluid circuit configured to directly transmit to a load to raise the temperature of the load to at least the intermediate temperature, the first working fluid circuit including a controllable expansion valve ;
An indoor second working fluid circuit configured to directly receive some of the thermal energy from the first working fluid circuit, the temperature of the load being lower than the desired temperature; A second working fluid circuit configured to directly transfer some of the thermal energy to the load to raise the temperature of the load from the intermediate temperature to at least the desired temperature, and including a controllable expansion valve A working fluid circuit ,
A pump for controlling the flow rate of the load liquid in the load circuit to assist in controlling the temperature of the load liquid in the load circuit in a load circuit for circulating the load liquid to be heated A load circuit comprising:
Optimizing the heat pump system by controlling the controllable expansion valve of the first working fluid circuit, the controllable expansion valve of the second working fluid circuit and the pump of the load circuit A control device to
A heat pump system comprising:

The beat pump system of claim 1, wherein the indoor second working fluid circuit is located indoors near the load.

The heat pump system of claim 1 or 2, comprising a first heat exchanger configured to directly transfer thermal energy from the first working fluid circuit to the load.

The heat pump system of claim 3 , comprising a second heat exchanger configured to directly transfer thermal energy from the first working fluid circuit to the second working fluid circuit.

The heat pump system of claim 4, comprising a third heat exchanger configured to directly transfer thermal energy from the second working fluid circuit to the load.

The first working fluid circuit is configured to exchange most of its thermal energy directly with the load and exchange less of its heat energy directly with the second working fluid circuit. The heat pump system according to claim 5, wherein

The heat pump system according to any one of claims 1 to 6, wherein the load circuit is configured to bring the working fluid in the first working fluid circuit into a subcooled state.

8. The load circuit according to claim 1, wherein the load circuit is configured to reduce overheating, condense, and further subcool the working fluid in the second working fluid circuit. 9. Heat pump system as described in

The second working fluid circuit comprises a working fluid compressor, and the heat pump system circulates the load liquid through a working fluid compressor jacket of the second working fluid circuit; 9. The heat pump system of claim 8, configured to transfer thermal energy from the working fluid in two working fluid circuits to a load liquid in the load circuit.

The heat pump system of claim 9, wherein the jacket comprises a heat transfer coil wound around a working fluid compressor in the second working fluid circuit.

The heat pump system of claim 5, wherein the load circuit is in communication with or comprises a fluid reservoir for storing the heated load liquid.

The heat pump system of claim 11, wherein the first, second and third heat exchangers are provided in a housing, the housing being positioned immediately adjacent to the fluid reservoir. .

The system includes a load liquid temperature before the load liquid passes through the first heat exchanger, a load liquid temperature after the load liquid passes through the first heat exchanger, and the load liquid 13. The load liquid temperature after passing through a third heat exchanger is monitored to determine when the load liquid in the fluid reservoir has been sufficiently heated. Heat pump system.

14. The heat pump system according to claim 13, configured to control a compressor and / or the expansion valve of the first and / or second working fluid circuit based on a load liquid temperature. .

The load circuit is in communication with or includes a fluid reservoir for storing the heated load liquid, and the load liquid in the fluid reservoir is relatively hot. 11. A heat pump as claimed in any one of claims 7 to 10, wherein the heat pump is stratified by forming a water climatic layer comprising a separate upper region and a lower region of a relatively cooler cold load liquid. ·system.

It is configured to maintain the load liquid in at least the upper region of the fluid reservoir at the desired temperature or above, further removing cooler load liquid from the lower region of the fluid reservoir, and Circulating liquid along the load fluid circuit to raise the cooler load liquid to at least the desired temperature, and returning the heated load liquid to the upper region of the fluid reservoir. The heat pump system of claim 15.

The controllable expansion valve of the first working fluid circuit is located in the outdoor unit, the outdoor unit controlling the controllable expansion valve of the first working fluid circuit and the heat pump A heat pump system according to any preceding claim, comprising a controller in communication with the controller of the system.

A device used in a heat pump system for raising the temperature of a load containing liquid at least to a desired temperature, the device being adapted to be placed indoors near the load and external Operably connectable to an existing outdoor heat exchanger configured to collect thermal energy from a thermal energy source, the device comprising:
When the temperature of the load is lower than the intermediate temperature, it receives some thermal energy collected by the existing outdoor heat exchanger, and further transfers the thermal energy directly to the load to bring the temperature of the load to the intermediate temperature. A first heat exchanger configured to increase the temperature;
A second heat exchanger configured to receive some thermal energy collected by the existing outdoor heat exchanger;
When the temperature of the load is lower than the desired temperature, the thermal energy collected by the second heat exchanger is received, and the thermal energy is directly transferred to the load so that the temperature of the load is reduced from the intermediate temperature. A third heat exchanger configured to increase to at least the desired temperature,
The apparatus is operably connectable to the existing outdoor heat exchanger, wherein the existing outdoor heat exchanger, the first heat exchanger, and the second heat exchanger are in a first operation. The first working fluid circuit is provided with a controllable expansion valve;
The second heat exchanger and the third heat exchanger are components of a second working fluid circuit, and the second working fluid circuit includes a controllable expansion valve,
The device further comprises:
A load circuit that circulates the load liquid to be heated and that includes a pump and that controls the flow rate of the load liquid in the load circuit to help control the temperature of the load liquid in the load circuit The circuit,
Controlling the controllable expansion valve of the first working fluid circuit, the controllable expansion valve of the second working fluid circuit and the pump of the load circuit to optimize the system A control device;
A device comprising:

The apparatus of claim 18, configured to control a compressor and / or the expansion valve of the first and / or second working fluid circuit based on a load liquid temperature.

The second working fluid circuit comprises a working fluid compressor, and the apparatus further circulates the load liquid through a working fluid compressor jacket of the second working fluid circuit and the second working fluid circuit. 20. An apparatus according to claim 18 or 19, configured to transfer thermal energy from the working fluid in a fluid circuit to the load liquid.

21. The apparatus of claim 20, wherein the jacket comprises a heat transfer coil wound around a working fluid compressor in the second working fluid circuit.

The load circuit is in communication with or includes a fluid reservoir for storing the heated load liquid, and the load liquid in the fluid reservoir is relatively hot. 22. An apparatus according to claim 20 or 21, wherein the apparatus is stratified by forming a water climatic layer comprising a separate upper region and a lower region of a relatively cooler cold load liquid.

The controllable expansion valve of the first working fluid circuit is located in the outdoor unit, the outdoor unit controlling the controllable expansion valve of the first working fluid circuit and the heat pump 23. A device according to any one of claims 18 to 22, comprising a control device in communication with the control device of the system.

24. Apparatus according to any one of claims 18 to 23, which can be integrated into an existing air-air heat pump system.

25. An apparatus according to any one of claims 18 to 24, wherein the first, second and third heat exchangers are placed in the housing.