CN208139625U - A kind of white energy storage heat pump of release - Google Patents

Abstract

The utility model discloses a frost-free energy storage heat pump, which comprises two sets of heat exchange systems, a refrigerant heat exchange system and a liquid heat exchange system. The utility model does not need to increase the energy consumption of defrosting, and improves the energy efficiency ratio of the whole machine; the heat pump does not need to be shut down to switch the defrosting function, which ensures continuous heating and improves the comfort performance of the equipment; it does not need to use a four-way valve , reducing the pipeline connection of the refrigerant; the liquid heat exchange system and the second coil make the utility model frost-free energy storage heat pump have the energy storage function, which can be independently and automatically adjusted according to the load.

Description

A frost-free energy storage heat pump

technical field

The utility model relates to the field of air energy and solar energy utilization, in particular to a high-efficiency defrosting energy storage heat pump.

Background technique

When the air energy heat pump is running under heating conditions, when the surface temperature of the outdoor heat exchanger is lower than 0°C and lower than the dew point temperature of the outdoor air, frost will form on the surface of the heat exchanger. The formation of the frost layer reduces the air flow through the outdoor heat exchanger, increases the heat transfer resistance between the refrigerant and the outdoor air, and deteriorates the heat transfer of the outdoor heat exchange, resulting in a decrease in the evaporation temperature and heating capacity of the heat pump unit. It is very necessary to periodically defrost the heat exchanger of the outdoor unit of the air source heat pump unit to improve the heating performance and heating stability of the air source heat pump in a low temperature and high temperature environment.

At present, there are many defrosting methods for air energy heat pumps, which are mainly divided into two categories, one is thermal defrosting method, and the other is non-thermal defrosting method. Non-thermal defrosting methods mainly include high-voltage electric field and ultrasonic defrosting method . Due to the influence of technical factors such as excessive discharge power and electrode material insulation, the high-voltage electric field cannot be widely used at present. The ultrasonic defrosting method also has problems such as unclean defrosting and no removal of the base ice layer. Thermal defrosting, whether using electric heaters or reverse cycle hot air defrosting, has the disadvantages of high energy consumption, or lack of heating in indoor gaps, and low energy efficiency of the overall system.

Therefore, the existing air energy heat pump technology needs to be improved and developed.

Utility model content

The purpose of the utility model is to provide a defrosting-free energy storage heat pump, which has a simple structure, high energy efficiency, no defrosting is required for long-term operation, and the indoor unit of the unit can provide uninterrupted heating.

In order to achieve the above object, the utility model proposes the following technical solutions:

A defrost-free energy storage heat pump, including a refrigerant heat exchange system composed of a compressor, a device heat exchanger, a refrigerant liquid storage device, a throttling element, a first solenoid valve, an outdoor heat exchanger, and a gas-liquid separator connected sequentially end to end , an electromagnetic regulating valve is set between the outlet end of the compressor and the inlet end of the outdoor heat exchanger. The coil is coiled on the energy storage water tank, and the end of the first heat exchange tube coil is connected with the gas-liquid separator; the energy storage water tank is also connected with a liquid heat exchange system, and the liquid heat exchange system includes a second heat exchange coil coiled on the energy storage water tank. Coil, the head and tail of the second heat exchange coil are connected to the head and tail of the solar collector through liquid pipes, and the liquid pipe is provided with a liquid circulation pump, solar heat collector, second heat exchange coil and liquid circulation pump The liquid circulation system is formed by communicating with the liquid pipeline.

The outlet end of the throttling element is provided with a drier, and the outlet end of the drier is respectively connected with the first electromagnetic valve and the second electromagnetic valve.

The throttling element is an electronic expansion valve.

The heat exchanger of the device includes a water storage tank and a heat exchange coil coiled on the water storage tank. The head end of the heat exchange coil is connected to the outlet end of the compressor through a refrigerant pipeline, and the tail end of the heat exchange coil is connected to the refrigerant through a pipeline. Reservoir connection.

The refrigerant heat exchange system includes four cycle modes, standard cycle mode, energy storage utilization cycle mode, combined cycle mode of defrosting and energy storage utilization, and combined cycle mode of energy storage utilization and outdoor unit.

When the standard cycle mode works, the high-temperature and high-pressure gas refrigerant of the compressor enters the heat exchange coil through the refrigerant pipe to heat the water in the water storage tank, and the high-temperature and high-pressure gas refrigerant turns into a high-pressure liquid and enters the liquid receiver to be throttled by the electronic expansion valve. Then it flows through the dryer, the first solenoid valve, the outdoor heat exchanger, and the gas-liquid separator, and finally returns to the compressor to complete a standard cycle, and the components in the cycle are connected end to end.

When the energy storage utilization cycle mode works, the high-temperature and high-pressure gas refrigerant of the compressor enters the heat exchange coil through the refrigerant pipe to heat the water in the storage tank, and the high-temperature and high-pressure gas refrigerant turns into a high-pressure liquid and enters the liquid receiver to be throttled by the electronic expansion valve. After passing through the dryer, the second solenoid valve, the first coil pipe entering the energy storage water tank, and then returning to the compressor through the gas-liquid separator, an energy storage utilization cycle is completed, and the components in the cycle are connected end to end in sequence.

When defrosting and energy storage are working in the combined cycle mode, the electromagnetic adjustment work is turned on for automatic adjustment, the first electromagnetic valve is closed, the second electromagnetic valve is opened, the refrigerant gas from the compressor is divided into two parts, and the refrigerant gas is divided into two parts according to the storage capacity. It can be carried out in circulation mode, and another part of the refrigerant enters the outdoor heat exchanger through the electromagnetic regulating valve and returns to the compressor through the gas-liquid separator.

When the combined cycle mode of energy storage utilization and outdoor unit works, both the second solenoid valve and the first solenoid valve are opened, the electromagnetic regulating valve is closed, and the refrigeration works in the energy storage utilization cycle mode and the standard cycle mode.

The liquid heat exchange system includes a solar heat collector, a liquid connecting pipe, a coil, and a circulating water pump. The liquid enters the solar heat collector from the circulating water pump to be heated, passes through the liquid connection, enters the coil to release heat, and then returns to the water pump. The components are connected end to end.

Compared with the prior art, the utility model has the following beneficial effects:

1. The frost-free energy storage heat pump of the utility model does not need to increase the energy consumption of defrosting, and improves the energy efficiency ratio of the whole machine;

2. The heat pump does not need to be shut down to switch the defrosting function, which ensures continuous heating and improves the comfort performance of the equipment;

3. The frost-free energy storage heat pump of the utility model does not need a four-way valve, which reduces the pipeline connection of the refrigerant;

4. The liquid heat exchange system and the second coil make the frost-free energy storage heat pump of the utility model have the energy storage function, which can be independently and automatically adjusted according to the load.

Description of drawings

Fig. 1 is a structural schematic diagram of a frost-free energy storage heat pump of the present invention.

Reference signs:

1-compressor, 2-refrigerant pipeline, 3-water storage tank, 4-heat exchange coil, 5-liquid receiver, 6-electronic expansion valve, 7-dryer, 8-first solenoid valve, 9-outdoor Heat exchanger, 10-gas-liquid separator, 11-electromagnetic regulating valve, 12-second solenoid valve, 13-first heat exchange tube coil, 14-energy storage water tank, 15-solar collector, 16-second Heat exchange coil, 17-liquid connecting pipe, 18-circulating water pump.

Detailed ways

The content of the present utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a high-efficiency defrosting energy storage heat pump includes two sets of heat exchange systems, namely, a refrigerant heat exchange system and a liquid heat exchange system.

The refrigerant heat exchange system includes: a compressor 1 connected end to end in sequence, a refrigerant pipeline 2, a heat exchange coil 4 coiled on a water storage tank 3, a liquid receiver 5, an electronic expansion valve 6, a dryer 7, and a first solenoid valve 8. Outdoor heat exchanger 9 and gas-liquid separator 10. The outlet end of the compressor 1 is communicated with the inlet end of the outdoor heat exchanger 9 through a pipeline, and an electromagnetic regulating valve 11 is arranged on the pipeline. A heat exchange tube coil 13 , the first heat exchange tube coil 13 is coiled on the energy storage water tank 14 .

The liquid heat exchange system includes: a solar heat collector 15 , a liquid connection pipe 17 , a second heat exchange coil 16 , and a circulating water pump 18 . The second heat exchange coil 16 is also coiled on the energy storage water tank 14 . The solar heat collector 15 , the second heat exchange coil 16 , and the circulating water pump 18 are connected through the liquid connection pipe 17 to form a liquid heat exchange circulation system.

The refrigerant heat exchange system includes four cycle modes: standard cycle mode, energy storage utilization cycle mode, defrosting and energy storage utilization combined cycle mode, and energy storage utilization and outdoor unit combined cycle mode.

When the standard circulation mode works, the high-temperature and high-pressure gas refrigerant of the compressor 1 enters the heat exchange coil 4 through the refrigerant pipe 2 to heat the water in the water storage tank 3, and the high-temperature and high-pressure gas refrigerant becomes a high-pressure liquid and enters the liquid receiver 5 through The electronic expansion valve 6 throttles and then flows through the dryer 7, the first solenoid valve 8, the outdoor heat exchanger 9, and the gas-liquid separator 10, and finally returns to the compressor 1 to complete a standard cycle, and the components in the cycle are in order connect.

When the energy storage utilization cycle mode works, the high-temperature and high-pressure gas refrigerant of the compressor 1 enters the heat exchange coil 4 through the refrigerant pipeline 2 to heat the water in the water storage tank 3, and the high-temperature and high-pressure gas refrigerant becomes a high-pressure liquid and enters the liquid receiver 5 Throttle through the electronic expansion valve 6, flow through the dryer 7, the second solenoid valve 8, enter the first coil 13 in the energy storage water tank 14, and then return to the compressor after passing through the gas-liquid separator 10, completing an energy storage utilization cycle. The components in the loop are connected end-to-end.

When defrosting and energy storage are used in the combined cycle mode, the electromagnetic regulating valve 11 is automatically adjusted, the first electromagnetic valve 8 is closed, the second electromagnetic valve 12 is opened, and the refrigerant gas from the compressor 1 is divided into two parts, one part One part of the refrigerant is carried out in the cycle mode of energy storage and utilization, and the other part of the refrigerant enters the outdoor heat exchanger 9 through the electromagnetic regulating valve 11 and returns to the compressor 1 through the gas-liquid separator 10 .

When the combined cycle mode of energy storage utilization and outdoor unit works, both the second solenoid valve 12 and the first solenoid valve 8 are opened, the electromagnetic regulating valve 11 is closed, and the refrigeration works in the energy storage utilization cycle mode and the standard cycle mode.

The liquid heat exchange system includes a solar heat collector 15, a liquid connection pipe 17, a second heat exchange coil 16, and a circulating water pump 18. The liquid enters the solar heat collector 15 to be heated by the circulating water pump 18 and enters the second heat exchange coil through a liquid connection. 16 release heat and get back to the circulating water pump 18 again, and each part is connected end to end in turn.

The frost-free energy storage heat pump of the utility model can change the cycle mode at any time according to the actual situation, and also has the function of energy storage, which can be independently and automatically adjusted according to the load.

This heat pump does not use a four-way valve, which reduces the need to continuously change the pipeline connection between the four-way valve and the refrigerant in the prior art, so that the operation will be more continuous and smooth, and the performance will be improved.

The heat pump does not increase the energy consumption of defrosting, improves the energy efficiency ratio of the whole machine, and improves the performance of the heat pump.

The above detailed description is a specific description of the feasible embodiment of the utility model. This embodiment is not used to limit the patent scope of the utility model. Any equivalent implementation or change that does not deviate from the utility model shall be included in this case within the scope of the patent.

Claims (4)

1. a kind of white energy storage heat pump of release, it is characterised in that：Including by compressor, device heat exchanger, refrigerant liquid storage device, throttling member Part, the first solenoid valve, outdoor heat exchanger and gas-liquid separator are sequentially connected end to end the refrigerant heat-exchange system of composition, the compressor Outlet end and the outdoor heat exchanger input end between be provided with solenoid valve, the outlet end of the restricting element is by setting The piping connection for being equipped with second solenoid valve has the first heat exchange pipe dish, and the first heat exchange pipe dish is coiled on energy-accumulating water tank, described The end of first heat exchange pipe dish is connect with the gas-liquid separator；The energy-accumulating water tank is also connected with liquid heat exchange system, described Liquid heat exchange system includes coiling in the second heat exchange coil on the energy-accumulating water tank, the two ends point of second heat exchange coil The two ends of solar thermal collector are not connected to by fluid pipeline, are provided with liquid circulation pump on the fluid pipeline, it is described Solar thermal collector, the second heat exchange coil and liquid circulation pump pass sequentially through fluid pipeline head and the tail connection and constitute liquid circulation system System.

2. the white energy storage heat pump of release according to claim 1, it is characterised in that：The restricting element outlet end is provided with dry Dry device, the outlet end of the drier are connect with the first solenoid valve with second solenoid valve respectively.

3. the white energy storage heat pump of release according to claim 1, it is characterised in that：The restricting element is electric expansion valve.

4. the white energy storage heat pump of release according to claim 1, it is characterised in that：Described device heat exchanger includes water tank, And coiling, in the heat exchange coil on the water tank, the head end of the heat exchange coil passes through the outlet of refrigerant tubing and compressor The tail end of end connection, the heat exchange coil is connect by pipeline with the refrigerant liquid storage device.