CN201637193U - A heat pump system with multiple heat sources - Google Patents

Abstract

A heat pump system with multiple heat sources, including air-conditioning heat pumps, solar heat collectors, floor heating heat exchangers and domestic hot water tanks, air-conditioning heat pumps including outdoor units, indoor units and fan coils, hot water devices, and domestic hot water tanks A water tank heat exchanger is installed inside, and the water channel of the indoor unit communicates with the water channel of the hot water device, the water channel of the floor heating heat exchanger, the water channel of the solar collector, the water channel of the water tank heat exchanger, and the water channel of the fan coil unit; Water pumps are respectively set in the waterway, the waterway of the hot water device and the waterway of the solar collector; a first solenoid valve is set between the waterway of the indoor unit and the waterway of the fan coil unit; the waterway of the indoor unit and the waterway of the floor heating heat exchanger A second solenoid valve is arranged between them; a third solenoid valve is arranged between the waterway of the indoor unit and the waterway of the solar heat collector. The utility model has the characteristics of flexible operation, high efficiency, energy saving, comfort and environmental protection.

Description

A heat pump system with multiple heat sources

technical field

The utility model relates to a heat pump system, in particular to a heat pump system with multiple heat sources.

Background technique

The heating mode of the traditional heat pump system is relatively simple, and there are obvious defects, and it is restricted by some objective factors when used. Ordinary heat pump systems can only heat the space or make hot water through the refrigerant absorbing heat from the air. When the ambient temperature is relatively low, the heating efficiency is very low and the heating capacity is obviously insufficient, which affects the comfort of use. And energy consumption is big, thus its limitation is bigger. Although the solar collector system is energy-saving and environmentally friendly, it is greatly affected by weather factors and has relatively large limitations.

In response to this situation, some manufacturers have made some improvements. For example, Chinese Patent Document No. CN101403521A disclosed a solar absorption refrigeration and ground source heat pump coupling system on April 18, 2009, including solar collectors, buried type heat exchanger, and evaporator, compressor and condenser connected end to end, the solar collector is connected in series with the heat storage and hot water tank through the first inlet and outlet tube group, and the heat storage and hot water tank is connected with the absorber through the second inlet and outlet tube group The absorption refrigeration unit is connected in series with the cooling tower through the third inlet and outlet pipe group, the absorption refrigeration unit is connected with the air conditioner in the air-conditioned room through the fourth inlet and outlet pipe group, and the buried heat exchanger is connected through the fifth inlet and outlet pipe group The group communicates with the condenser, and the evaporator communicates with the air conditioner in the air-conditioned room through the sixth inlet and outlet tube group; the first inlet and outlet tube group, the second inlet and outlet tube group, the third inlet and outlet tube group, the fourth inlet and outlet tube group, the fifth inlet and outlet A water pump, a reversing valve and/or an electromagnetic valve are arranged between the pipe group and the sixth inlet and outlet pipe group or in each pipe group. This kind of cogeneration system can use renewable energy and run efficiently and energy-saving throughout the year, but its pipe network is relatively complicated.

Utility model content

The purpose of this utility model is to provide a multi-heat source heat pump system with simple and reasonable structure, multiple heat sources, flexible operation, high efficiency and energy saving, comfort and environmental protection, providing both heating and domestic hot water, and a wide range of applications, so as to overcome the existing There are deficiencies in the technology.

A multi-heat source heat pump system designed for this purpose includes air-conditioning heat pumps, solar heat collectors, floor heating heat exchangers and domestic hot water tanks. The air-conditioning heat pumps include outdoor units, indoor units and fan coils. The structural features are: Including the hot water device, the domestic hot water tank is equipped with a water tank heat exchanger, the water circuit of the indoor unit and the water circuit of the hot water device, the water circuit of the floor heating heat exchanger, the water circuit of the solar collector, the water circuit of the water tank heat exchanger, and the fan The waterways of the coils are connected; the waterways of the indoor unit, the waterway of the hot water device and the waterway of the solar collector are respectively provided with water pumps; the first solenoid valve is arranged between the waterway of the indoor unit and the waterway of the fan coil; the indoor unit A second electromagnetic valve is arranged between the waterway of the ground heating heat exchanger and the waterway of the ground heating heat exchanger; a third electromagnetic valve is arranged between the waterway of the indoor unit and the waterway of the solar heat collector.

A first check valve is arranged in the water circuit of the indoor unit.

The indoor unit includes a first ball valve, a second ball valve, a first water pump, a first plate heat exchanger and a second electric heater, and the first ball valve and the second ball valve are respectively arranged at the water inlet and outlet of the water circuit of the indoor unit. end.

The water path of the indoor unit is connected in parallel with the water path of the hot water device.

A second check valve is arranged in the water circuit of the hot water device.

The hot water device includes a gas furnace or a wall-hung furnace.

There is more than one fan coil unit, one end of the fan coil unit is connected to the air pan water separator, and the other end of the fan coil unit is connected to the air pan water collector.

There is more than one floor heating heat exchanger, one end of the floor heating heat exchanger is connected with the floor heating water separator, and the other end of the floor heating heat exchanger is connected with the floor heating water collector.

The domestic hot water tank is an insulated and pressurized water tank, and a first electric heater is also arranged in the domestic hot water tank.

The utility model integrates the air-conditioning heat pump, solar heat collector, and hot water device into one system, takes the air-conditioning heat pump as the main body, and can independently provide heating for the terminal equipment; there are four kinds of heat sources: solar heat collector, air-conditioning heat pump, and hot water The device, floor heating heat exchanger, can provide four operating modes: fan coil cooling, domestic hot water heating, fan coil and floor heating heating, fan coil floor heating + domestic hot water heating, which can be selected according to different heating According to the requirements and heating conditions, the system performs intelligent regulation according to the actual situation to ensure the comfort and efficiency of use. When the air conditioner heat pump, solar collector, gas furnace or other heat source devices are all connected to the system, when the sun is sufficient, the system will first choose to use the solar collector to heat domestic hot water, and when the air conditioner heat pump is working, the system will choose the air conditioner The heat pump supplies heat to fan coil units or floor heating, giving full play to the advantages of each heat source, truly achieving high efficiency, energy saving, comfort and environmental protection, and meeting different heating needs of users.

The hot water from the outlet of the indoor unit in the utility model can be adjusted by the first solenoid valve, the second solenoid valve and the third solenoid valve to control the heating of the fan coil, the heating of the floor heating or the heating of the domestic hot water tank. Simultaneously or separately, intelligent control is carried out according to different loads and different heat pump capacity outputs. In the fan coil unit, more than one fan coil unit can be connected. When multiple fan coil units are connected, the water flow of each fan coil unit is allocated through the fan coil water separator and the fan coil water collector. In the way of floor heating, the water flow of each pipeline is also allocated through the floor heating water separator and the floor heating water collector.

The heating end of the utility model can be connected to a domestic hot water tank, a fan coil unit, and a floor heating heat exchanger. Among them, the domestic hot water tank can produce high-temperature and high-quality hot water, the fan coil unit can be used for both cooling and heating, and the floor heating heat exchanger can improve the comfort of room heating, and can be used for space heating or cooling as well as producing domestic hot water.

The utility model has the characteristics of simple and reasonable structure, multiple heat sources, flexible operation, high efficiency and energy saving, comfortable and environment-friendly, provides both heating and domestic hot water, and has a wide application range.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the utility model.

In the figure: 1 is the outdoor unit, 2 is the solar collector, 3 is the indoor unit, 4 is the hot water device, 5 is the solar module, 6 is the domestic hot water tank, 7 is the solar pump station, 8 is the floor heating heat exchanger , 9 is the first fan coil unit, 10 is the second fan coil unit, 11 is the third fan coil unit, 12 is the floor heating water separator, 13 is the floor heating water collector, 14 is the air plate water separator, and 15 is the fan coil Pan water collector, 16 is the first solenoid valve, 17 is the second solenoid valve, 18 is the third solenoid valve, 19 is the first electric heater, 20 is the first ball valve, 21 is the first check valve, 22 is The second check valve, 23 is the second ball valve, 24 is the first water pump, 25 is the first plate heat exchanger, 26 is the second electric heater, 27 is the water tank heat exchanger, 28 is the second water pump, 29 is Circulating water pump, 39 is the second plate heat exchanger.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Referring to Figure 1, the heat pump system with multiple heat sources includes an air-conditioning heat pump, a solar collector 2, a floor heating heat exchanger 8, a domestic hot water tank 6 and a hot water device 4, and the air-conditioning heat pump includes an outdoor unit 1, an indoor unit 3 and a fan Coil, the domestic hot water tank 6 is provided with a water tank heat exchanger 27, the water channel of the indoor unit 3, the water channel of the hot water device 4, the water channel of the floor heating heat exchanger 8, the water channel of the solar collector 2, and the water tank heat exchanger The waterway of 27 and the waterway of the fan coil unit are connected; the waterway of the indoor unit 3, the waterway of the water heater 4 and the waterway of the solar heat collector 2 are respectively provided with water pumps.

A first electromagnetic valve 16 is arranged between the waterway of the indoor unit 3 and the waterway of the fan coil unit; a second electromagnetic valve 17 is arranged between the waterway of the indoor unit 3 and the waterway of the floor heating heat exchanger 8; A third electromagnetic valve 18 is arranged between the waterways of the solar heat collector 2 . The outdoor unit 1 in this embodiment adopts a full DC frequency conversion outdoor unit.

A first check valve 21 is provided in the water path of the indoor unit 3 . The indoor unit 3 includes a first ball valve 20, a second ball valve 23, a first water pump 24, a first plate heat exchanger 25 and a second electric heater 24. The first ball valve 20 and the second ball valve 23 are respectively arranged on the The water inlet and outlet of the waterway.

The hot water coming out of the waterway outlet of the indoor unit 3 can be adjusted by the first solenoid valve 16, the second solenoid valve 17 and the third solenoid valve 18 to control the heating of the fan coil, the floor heating heat exchanger 8 for heating or domestic hot water Box heating, the three can be carried out at the same time or independently, and intelligent control can be carried out according to different loads and different capacity outputs of air-conditioning heat pumps.

The water path of the indoor unit 3 is connected in parallel with the water path of the water heater 4, so that the water heater 4 can supply heat to the domestic hot water tank 6, the floor heating heat exchanger 8 and the fan coil 9.

A second check valve 22 and a second water pump 28 are provided in the water circuit of the hot water device 4 . The hot water device 4 includes a gas furnace or a wall-hung furnace or the like.

There is more than one fan coil unit, one end of the fan coil unit is connected to the fan coil water separator 14 , and the other end of the fan coil unit is connected to the fan coil water collector 15 . In this embodiment, there are three fan coil units, respectively the first fan coil unit 9, the second fan coil unit 10 and the third fan coil unit 11, which are allocated through the fan coil water separator 14 and the fan coil water collector 15 Water flow for each fan coil unit.

There are more than one floor heating heat exchanger 8, one end of the floor heating heat exchanger 8 is connected to the floor heating water separator 12, and the other end of the floor heating heat exchanger 8 is connected to the floor heating water collector 13; the floor heating heat exchanger 8 is When there are more than two, the water flow of each floor heating heat exchanger is allocated through the floor heating water distributor 12 and the floor heating water collector 13 . There are three floor heating heat exchangers 8 in this embodiment.

The domestic hot water tank 6 is an insulated and pressurized water tank, and a water tank heat exchanger 27 and a first electric heater 19 are arranged in the domestic hot water tank 6 . The domestic hot water tank 6 can be connected with the solar heat collector 2 and the indoor unit 3 by connecting the solar module 5 . A solar pumping station 7 and a solar module 5 are connected between the solar heat collector 2 and the domestic hot water tank 6 , and the solar module includes a second plate heat exchanger 30 and a circulating water pump 29 . The circulating water pump is arranged in the waterway of the solar heat collector 2 .

The solar pump station 7 is connected between the solar heat collector 2 and the solar module 5 . When heating domestic water, you can choose to use air-conditioning heat pumps or solar collectors. The water tank heat exchanger 27 is connected to one end of the second plate heat exchanger 30 in the solar module 5 , and the circulating water pump 29 is connected in between. The water path of the solar heat collector 2 is connected in parallel with the water path of the indoor unit 3 . Since the domestic hot water tank 6 has a first electric heater 19, the first electric heater 19 can be turned on to make hot water when the load is insufficient.

The control method of the solar module 5: that is, when it is detected that the temperature of the solar collector 2 is ΔT1 higher than the temperature of the domestic hot water tank, it is detected by the temperature sensing package of the domestic hot water tank 6 and the temperature sensing package on the solar thermal collector 2 Temperature difference, the solar pumping station 7 sends a signal to the indoor unit 3, the air conditioner heat pump stops heating the domestic hot water tank 6, and at the same time turns on the solar pumping station and the water pump of the solar module, and uses the heat of the solar collector 2 to heat the domestic hot water tank . The range of ΔT1 is 5-15°C.

The control method of the hot water device 4: Judging by the temperature detection of the water outlet of the indoor unit 3, after a period of time Δτ, the difference between the total water outlet temperature of the water outlet of the indoor unit 3 and the set temperature is maintained at a relatively low temperature. When the temperature difference range ΔT2 is large, the control panel of the indoor unit 3 sends a start signal to the hot water device 4 to supplement heat for space heating. The range of Δτ is 20 to 80 minutes, and the range of ΔT2 is 5 to 15°C.

When the utility model works, there are several working modes as follows:

Fan coil cooling mode: Outdoor unit 1 is in cooling mode, other heat sources are turned off, the first solenoid valve 16 is turned on, the second solenoid valve 17 and the third solenoid valve 18 are closed, and the chilled water flowing from the water outlet of the indoor unit 3 flows through The refrigeration cycle is completed after the fan coil unit.

Domestic hot water heating mode: When the system is connected to solar energy, you can choose to use solar collector heating or air-conditioning heat pump heating, and the machine can judge by itself according to the set conditions. When using air-conditioning heat pump heating, the first electromagnetic valve 16, the second electromagnetic valve The valve 17 is closed, the third solenoid valve 18 is opened, and when both cannot meet the heating requirement, the first electric heater 19 in the domestic hot water tank 6 is turned on.

Fan coil and floor heating heating mode: When the system is connected to the hot water device 4, the air-conditioning heat pump or the hot water device 4 can be selected for heating, and the machine can judge by itself according to the set conditions. During operation, the first solenoid valve 16 and the second solenoid valve 17 are opened, and the third solenoid valve 18 is closed.

Fan coil unit + floor heating + domestic hot water heating mode: When the system is connected to the hot water device 4, the air-conditioning heat pump or the hot water device 4 can be selected for heating, and the machine can judge by itself according to the set conditions. During operation, the first solenoid valve 16, the second solenoid valve 17 and the third solenoid valve 18 are opened. When the domestic hot water fails to meet the set requirements, the first electric heater 19 in the domestic hot water tank 6 is turned on.

The utility model is not limited to the above-mentioned examples, and within the essential scope of the utility model, any changes, modifications, additions or replacements also belong to the protection scope of the utility model.

Claims (9)

1. the heat pump of thermal source more than a kind, comprise air-conditioning heat pump, solar thermal collector (2), floor heating heat exchanger (8) and domestic hot-water's case (6), air-conditioning heat pump comprises off-premises station (1), indoor set (3) and fan coil, it is characterized in that also comprising hot water apparatus (4), be provided with water tank heat exchanger (27) in domestic hot-water's case, the water route of indoor set communicates with the water route of the water route of hot water apparatus, floor heating heat exchanger, the water route of solar thermal collector, the water route of water tank heat exchanger, the water route of fan coil;

Be respectively arranged with water pump in the water route of the water route of indoor set, the water route of hot water apparatus and solar thermal collector;

Be provided with first magnetic valve (16) between the water route of indoor set and the water route of fan coil; Be provided with second magnetic valve (17) between the water route of the water route of indoor set and floor heating heat exchanger; Be provided with the 3rd magnetic valve (18) between the water route of indoor set and the water route of solar thermal collector.

2. the heat pump of many thermals source according to claim 1 is characterized in that being provided with first check-valves (21) in the water route of described indoor set (3).

3. the heat pump of many thermals source according to claim 1, it is characterized in that described indoor set (3) comprises first ball valve (20), second ball valve (23), first water pump (24), first plate type heat exchanger (25) and second electric heater (24), first ball valve and second ball valve are separately positioned on the water inlet end and the water side in the water route of indoor set.

4. according to the heat pump of the described many thermals source of the arbitrary claim of claim 1 to 3, it is characterized in that the water route of described indoor set (3) is in parallel with the water route of hot water apparatus (4).

5. the heat pump of many thermals source according to claim 1 is characterized in that being provided with second check-valves (22) in the water route of described hot water apparatus (4).

6. the heat pump of many thermals source according to claim 1 or 5 is characterized in that described hot water apparatus (4) comprises gas furnace or wall hanging stove.

7. the heat pump of many thermals source according to claim 1 is characterized in that described fan coil is more than one, and an end of this fan coil and wind dish water knockout drum (14) join, and the other end of fan coil and wind dish water collector (15) join.

8. the heat pump of many thermals source according to claim 1 is characterized in that described floor heating heat exchanger (8) is more than one, and an end of this floor heating heat exchanger and floor heating water knockout drum (12) join, and the other end of floor heating heat exchanger and floor heating water collector (13) join.

9. the heat pump of many thermals source according to claim 1 is characterized in that described domestic hot-water's case (6) for the insulation press-bearing water tank, also is provided with first electric heater (19) in this domestic hot-water's case.

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