CN209541161U - A kind of heat pump heat distribution system preparing constant-temperature hot water - Google Patents

A kind of heat pump heat distribution system preparing constant-temperature hot water Download PDF

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Publication number
CN209541161U
CN209541161U CN201821726135.6U CN201821726135U CN209541161U CN 209541161 U CN209541161 U CN 209541161U CN 201821726135 U CN201821726135 U CN 201821726135U CN 209541161 U CN209541161 U CN 209541161U
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water
temperature
heat pump
pipe
constant
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刘志斌
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Dalian Minzu University
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Dalian Nationalities University
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Abstract

The utility model discloses a kind of heat pump heat distribution systems for preparing constant-temperature hot water, belong to energy source use technical field.Have technical point that raw water box connects water-water jet by water supply pipe, the water supply pipe is equipped with Constant pressure tank a, the two sides the Constant pressure tank a are respectively equipped with temperature sensor a and electric control valve a, the water-water jet connects the condenser water inlet end of heat pump system by water inlet pipe, the water outlet connection outlet pipe of the condenser and mixed water pipe, the outlet pipe connects boiler, mixes water pipe and connects water-water jet.Beneficial effect is: realizing constant temperature water supply under conditions of an only heat storage water tank;Under the conditions of same hot water supply water temperature, heat pump unit power consumption 7% or so can be reduced;Flow in system is adjusted to be realized with control using feed pump, Constant pressure tank and electric control valve jointly, ensure that flow is adjusted accurate;The pump energy consumption in flow adjustment process is greatly reduced.

Description

A kind of heat pump heat distribution system preparing constant-temperature hot water
Technical field
The utility model relates to a kind of hot spring constant temperature heating systems, belong to energy source use technical field.
Background technique
Domestic hot-water supply system based on bathing demand is widely present in hotel, hospital, school and common plunge bath etc.. The heating method of hot water generally includes fire coal, combustion gas, fuel oil, electric boiler, electric heat pump etc..Due to the energy conservation of heat pump system, ring It protects with the obvious advantage, is more and more widely used in such system.Following characteristics are primarily present in heat pump heating system: (1) former Coolant-temperature gage is larger with seasonal variations, and raw water temperature change is more than 15 DEG C between the four seasons;(2) hot water load changes greatly, and hot water is used Measurer has randomness;(3) heat pump unit starting operation when, because raw water temperature lower than environment low-grade heat source temperature (source, air Source, other heat sources), cause condenser side refrigerant pressure to be less than or equal to vaporizer side refrigerant pressure.
Feature (1) and (2) on the one hand need heat pump unit to have good control characteristic, meet load needs;Another party Face, heat pump unit condenser have minimum discharge requirement, and minimum discharge requires to limit the inlet and outlet temperature difference of heat pump unit condenser, Usually 5~15 DEG C of cold water can not be quickly heated up to 45 DEG C or so, need to be arranged heat storage water tank, and in heat storage water tank and heat pump Hot water circulating pump is set between train condenser, and the temperature of boiler can be only achieved use process after repeatedly recycling, in heat accumulation Before water tank temperature not up to uses temperature, hot water supply not can be carried out;Usually be arranged to overcome the problems, such as this, in system two with Upper heat storage water tank, is used alternatingly, i.e. a heat storage water tank heating run, a heat storage water tank between heat supply running, water tank, It is completed between water pump alternately through valve transfer, although this method can guarantee the supply of hot water used in system, increases and be The investment and operating cost of system.During hot water heating, water temperature is gradually risen in heat storage water tank, leads to the exhaust of heat pump unit Pressure and temperature gradually rises, and condenser inlet and outlet pipes are connected with same water tank, and hot and cold water mixes in water tank, to guarantee Water temperature reaches set temperature, such as 45 DEG C in water tank, and when condenser supply backwater temperature difference is 5 DEG C, the supply water temperature of condenser is at least Reach 47.5 DEG C or more, just can guarantee that water tank temperature reaches 45 DEG C of sets requirement, the energy consumption of heat pump unit is caused to increase by 7% Left and right;It is mixed in the non-uniform situation of water in water tank, it is unstable to will lead to hot water supply water temperature.
The usual condenser supply backwater temperature difference of conventional heat pump unit is 5~8 DEG C, and condenser inner refrigerant pressure is greater than evaporator Inner refrigerant pressure, the presence of feature (3) start conventional heat pump unit can not normally under the operating condition.
Utility model content
To solve defect of the existing technology, the purpose of the utility model is to provide a kind of heat pumps for preparing constant-temperature hot water Heating system, system solves the problem heating water tanks and heat supply water tank switching problem, can be entered according to raw water temperature automatic adjustment The inflow temperature of the condenser of heat pump unit, overcome because raw water temperature it is too low caused by condenser in heat pump unit start-up course Middle refrigerant side pressure cannot normal starting problem lower than heat pump unit caused by vaporizer side refrigerant pressure.
The technical solution of the utility model is: a kind of heat pump heat distribution system preparing constant-temperature hot water, raw water box pass through water supply Piping connection water-water jet, the water supply pipe be equipped with Constant pressure tank a, the two sides the Constant pressure tank a be respectively equipped with temperature sensor a and Electric control valve a, the water-water jet connect the condenser water inlet end of heat pump system, the water outlet of the condenser by water inlet pipe Outlet pipe and mixed water pipe are connected, the outlet pipe connects boiler, mixes water pipe and connects water-water jet, on the water inlet pipe and outlet pipe It is respectively equipped with temperature sensor b and temperature sensor c, water pipe is mixed and is equipped with multifunctional pump, temperature sensor d, Constant pressure tank b and electricity Dynamic regulating valve b, the boiler connection temperature sensor e and liquid level sensor, the temperature sensor a, temperature sensor b, Temperature sensor c, temperature sensor d, temperature sensor e, electric control valve a, electric control valve b, multifunctional pump and liquid level pass Sensor connects controller.
The water supply pipe is equipped with raw water feed pump connected to the controller.
Pressure sensor a and pressure sensor b connected to the controller are respectively equipped on the Constant pressure tank a and Constant pressure tank b.
The boiler connects user terminal by hot water supplying pump.
The evaporimeter thermal source of the heat pump system includes soil source, air-source, earth surface water source, bathing waste heat.
The earth surface water source includes the water in river, river, lake, sea.
The beneficial effects of the utility model are: 1. under conditions of an only heat storage water tank, using heat pump hot water System in, realize constant temperature water supply;2. independent hot and cold water mixing device is arranged, guarantee the water inlet temperature of heat pump unit condenser Constant, heat pump unit effluent temperature constancy is spent, heat pump unit condenser side operating condition is stablized, and there is no cold and hot in boiler Water mixed problem can reduce heat pump unit power consumption 7% or so under the conditions of same hot water supply water temperature;3. the stream in system Amount is adjusted to be realized with control using feed pump, Constant pressure tank and electric control valve jointly, on the one hand ensure that flow is adjusted accurate; On the other hand, the pressure in Constant pressure tank belongs to unpowered equipment, and the pump energy consumption in flow adjustment process can be greatly reduced;4. control Device K processed calculates hot water load according to the actual numerical value of water temperature and water level in boiler, and then adjusts to system running state It is whole, it can be achieved that hot water supply is precisely controlled and adjusts, loss caused by avoiding that hot water is excessive and radiating in boiler is also kept away The generation of hot water insufficient supply problem is exempted from;5. the setting of multifunctional pump is solved because raw water temperature is lower than environment low-grade heat source temperature It spends (such as: ground source, air-source, other heat sources), condenser side refrigerant pressure is caused to be less than or equal to vaporizer side refrigerant The problem of pressure, unit can not normally start.
Detailed description of the invention
Fig. 1 is the utility model principle figure.
Appended drawing reference is as follows in figure: 1, raw water box, 2, raw water feed pump, 3, Constant pressure tank a, 4, Constant pressure tank b, 5, water-water jet, 6, multifunctional pump, 7, heat pump system, 8, boiler, 9, hot water supplying pump, 10, water supply pipe, 11, temperature sensor a, 12, electronic Regulating valve a, 13, water inlet pipe, 14, outlet pipe, 15, mixed water pipe, 16, temperature sensor b, 17, temperature sensor c, 18, temperature biography Sensor d, 19, electric control valve b, 20, temperature sensor e, 21, liquid level sensor, 22, controller, 23, pressure sensor a, 24, pressure sensor b.
Specific embodiment
1 pair of the utility model is described further with reference to the accompanying drawing:
A kind of heat pump heat distribution system preparing constant-temperature hot water, raw water box 1 connects water-water jet 5 by water supply pipe 10, described The raw water feed pump 2 that water supply pipe 10 is equipped with Constant pressure tank a3 and connect with controller 22, the two sides the Constant pressure tank a3 are set respectively Have a temperature sensor a11 and electric control valve a12, the water-water jet 5 by water inlet pipe 13 connect the condenser of heat pump system 7 into Water end (W.E.), the evaporimeter thermal source of heat pump system 7 include soil source, air-source, earth surface water source (such as: river, river, lake, sea water), bathing Waste heat, the water outlet connection outlet pipe 14 and mixed water pipe 15 of the condenser 5, the outlet pipe 14 connect boiler 8, mix water pipe 15 connect water-water jets 5, are respectively equipped with temperature sensor b16 and temperature sensor c17 on the water inlet pipe 13 and outlet pipe 14, mix Water pipe 15 is equipped with multifunctional pump 6, temperature sensor d18, Constant pressure tank b4 and electric control valve b19, Constant pressure tank a3 and Constant pressure tank The pressure sensor a23 connecting with controller 22 and pressure sensor b24 are respectively equipped on b4, the boiler 8 connects temperature Sensor e20 and liquid level sensor 21, boiler 8 connect user terminal, the temperature sensor a11, temperature by hot water supplying pump 9 Spend sensor b16, temperature sensor c17, temperature sensor d18, temperature sensor e20, electric control valve a12, motorized adjustment Valve b19, multifunctional pump 6 and liquid level sensor 21 connect controller 22.
The working principle of the utility model is: raw water feed pump 2 by the cold water in raw water box 1 be delivered in water-water jet 5 with After mixing pump 6 is mixed the part hot water in heat pump unit leaving condenser water in water-water jet 5, reach heat pump unit condensation Device allows temperature to be then again introduced into heat pump unit condenser, and the outlet pipeline of condenser is divided into two branches, all the way connection heat Water tank 8, for directly feeding user;Another way is delivered in water-water jet again by multifunctional pump, to guarantee heat pump unit condenser Inflow temperature requirement.
The utility model is achieved in that: under system running state, controller 22 is according to 8 medium temperature of current time boiler The numerical value of sensor e20 and liquid level sensor 21 are spent, determining heat pump unit leaving condenser water temperature c17 is calculated and enters boiler 8 hot water flow;Controller 22 determines the stream of the raw water entered in water-water jet 5 according to the flow for entering hot water in boiler is calculated Amount, the flow is equal with the flow of boiler 8 is entered, into raw water flow in water-water jet 5 by raw water feed pump 2, Constant pressure tank a3 It is completed with electric control valve a12 collective effect;Flow into 5 hot water of water-water jet is that heat pump unit condenser allows minimum discharge The flow for subtracting raw water, the flow into 5 hot water of water-water jet are made jointly by multifunctional pump 6, Constant pressure tank b4, motor regulated valve b19 With completion;The adjusting of heat pump unit compressor, which can be used variable frequency adjustment, or number of units is adjusted keeps it consistent with hot water load, Not being inconsistent rate should control ± 5%.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change It also should be regarded as the protection scope of the utility model into modification.

Claims (6)

1. a kind of heat pump heat distribution system for preparing constant-temperature hot water, which is characterized in that raw water box (1) is connected by water supply pipe (10) Water-water jet (5), the water supply pipe (10) are equipped with Constant pressure tank a (3), and Constant pressure tank a (3) two sides are respectively equipped with temperature sensing Device a (11) and electric control valve a (12), the water-water jet (5) by water inlet pipe (13) connection heat pump system (7) condenser into Water end (W.E.), water outlet connection outlet pipe (14) of the condenser 5 and mixed water pipe (15), the outlet pipe (14) connect boiler (8), water pipe (15) connection water-water jet (5) is mixed, is respectively equipped with temperature sensor b on the water inlet pipe (13) and outlet pipe (14) (16) and temperature sensor c (17), mix water pipe (15) be equipped with multifunctional pump (6), temperature sensor d (18), Constant pressure tank b (4) with And electric control valve b (19), boiler (8) connection temperature sensor e (20) and liquid level sensor (21), the temperature pass Sensor a (11), temperature sensor b (16), temperature sensor c (17), temperature sensor d (18), temperature sensor e (20), electricity Dynamic regulating valve a (12), electric control valve b (19), multifunctional pump (6) and liquid level sensor (21) connection controller (22).
2. the heat pump heat distribution system of preparation constant-temperature hot water according to claim 1, which is characterized in that the water supply pipe (10) it is equipped with the raw water feed pump (2) connecting with controller (22).
3. the heat pump heat distribution system of preparation constant-temperature hot water according to claim 1, which is characterized in that the Constant pressure tank a (3) With the pressure sensor a (23) and pressure sensor b (24) connecting with controller (22) are respectively equipped on Constant pressure tank b (4).
4. the heat pump heat distribution system of preparation constant-temperature hot water according to claim 1, which is characterized in that the boiler (8) User terminal is connected by hot water supplying pump (9).
5. the heat pump heat distribution system of preparation constant-temperature hot water according to claim 1, which is characterized in that the heat pump system (7) evaporimeter thermal source includes soil source, air-source, earth surface water source, bathing waste heat.
6. the heat pump heat distribution system of preparation constant-temperature hot water according to claim 5, which is characterized in that the earth surface water source packet Include the water in river, river, lake, sea.
CN201821726135.6U 2018-10-24 2018-10-24 A kind of heat pump heat distribution system preparing constant-temperature hot water Active CN209541161U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109237782A (en) * 2018-10-24 2019-01-18 大连民族大学 A kind of heat pump heat distribution system preparing constant-temperature hot water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109237782A (en) * 2018-10-24 2019-01-18 大连民族大学 A kind of heat pump heat distribution system preparing constant-temperature hot water

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