CN216844880U - Multifunctional water tank system based on heat pump unit - Google Patents

Abstract

The utility model relates to a multi-functional water tank system based on heat pump set and control method thereof, multi-functional water tank system based on heat pump set, including water tank, heat exchange coil, double pipe heat exchanger, heat pump set, ground warm, circulating water pump, wherein: the heat exchange coil and the double-pipe heat exchanger are respectively and fixedly arranged at the bottom in the water tank and the middle upper part in the water tank; the water inlet end of the heat exchange coil is connected with the water inlet of the water tank, and the water outlet end of the heat exchange coil is connected with the shell side water inlet end of the double-pipe heat exchanger; the shell pass water outlet end of the double-pipe heat exchanger is connected with a water outlet of the water tank; the two ends of the tube pass of the double-tube heat exchanger are respectively connected with a refrigerant inlet and a refrigerant outlet of the water tank and are connected with a heat pump unit through a heat insulation pipeline; the water tank, the circulating water pump and the floor heating are connected into a closed cycle through a heat insulation pipeline. The utility model discloses realize that a water tank satisfies heating and domestic hot water's two antithetical couplet and supply the demand, design more reasonable, low in manufacturing cost.

Description

Multifunctional water tank system based on heat pump unit

technical field

The utility model relates to the technical field of hot water tanks, in particular to a multifunctional water tank system based on a heat pump unit and a control method thereof.

Background technique

At present, the existing floor heating water heater usually needs to meet the user's domestic hot water demand while meeting the user's floor heating demand. To meet this dual supply requirement, two water tanks need to be designed, one water tank is used for floor heating heating, and the other water tank is used. For the supply of domestic hot water, the water tank system of this kind of floor heating water heater is expensive to manufacture, and the two water tanks occupy more installation space and require higher installation positions.

Utility model content

The utility model aims to solve the technical problems existing in the prior art. Therefore, the utility model provides a heat pump unit-based multifunctional water tank system and a control method thereof with more reasonable design and low manufacturing cost.

The technical scheme adopted by the utility model to solve its technical problems is:

Provide a multifunctional water tank system based on a heat pump unit, including a water tank, a heat exchange coil, a casing heat exchanger, a heat pump unit, floor heating, and a circulating water pump, wherein: the heat exchange coil and the casing heat exchanger They are respectively fixed and installed at the bottom of the water tank and the middle and upper part of the water tank; the water inlet end of the heat exchange coil is connected to the water inlet of the water tank, and the water outlet end is connected to the shell side water inlet end of the casing heat exchanger; The shell-side water outlet of the sleeve-type heat exchanger is connected to the water outlet of the water tank; the two ends of the pipe-side of the sleeve-type heat exchanger are respectively connected to the refrigerant inlet and refrigerant outlet of the water tank, and are connected to the heat pump unit through thermal insulation pipes; The water tank, the circulating water pump and the floor heating are connected to form a closed cycle through a thermal insulation pipeline.

In a preferred embodiment of the multifunctional water tank system based on the heat pump unit provided by the present invention, it also includes a water temperature control system, and the water temperature control system includes a water tank temperature sensing head, an outlet water temperature sensing head, an electromagnetic three-way valve and A controller and a hot water circulation pipe, wherein: the temperature sensing head of the water tank is arranged in the middle of the water tank; the electromagnetic three-way valve is arranged on a hot water pipe connected to a water outlet of the water tank; one end of the hot water circulation pipe The shell side water inlet end of the casing heat exchanger is connected, and the other end is connected to the electromagnetic three-way valve; the water outlet temperature sensing head is arranged on the hot water pipeline and is located at the water inlet end of the electromagnetic three-way valve; so The temperature sensing head of the water tank, the temperature sensing head of the water outlet, the electromagnetic three-way valve and the heat pump unit are all connected with the controller by electrical signals.

In a preferred embodiment of the multifunctional water tank system based on the heat pump unit provided by the present invention, a hot water circulation pump is also provided on the hot water circulation pipeline, and the hot water circulation pump is connected with the electromagnetic tee Valve linkage control.

The control method of the multifunctional water tank system based on the heat pump unit of the present invention is as follows:

When the temperature sensing head of the water tank detects that the water temperature of the water tank is lower than the set water temperature, the controller controls the heat pump unit to turn on, and the casing heat exchanger heats the water temperature of the water tank to the set temperature to meet the floor heating demand;

When the user uses hot water, the cold water first passes through the heat exchange coil, and the cold water in the water tank is preheated and heated to warm water. The water in the water tank heats the warm water in the casing heat exchanger, and the heated water flows to the water outlet temperature sensing head. If the water temperature ≥ the set water temperature, it is directly supplied to the user; if the water temperature < the set water temperature, the controller The electromagnetic three-way valve is controlled to switch the channel, the water is introduced into the casing heat exchanger from the hot water circulation pipeline, and the heat pump unit is controlled to open, and the heat pump unit is heated to the set water temperature and then supplied to the user for use.

Compared with the prior art, the beneficial effects of the multifunctional water tank system based on the heat pump unit provided by the present invention are: the water in the water tank and the floor heating form a closed cycle, and the water in the water tank is only used for the heating of the floor heating, It is not used as the water source of the user's domestic hot water, but the user's domestic hot water is designed to preheat the cold water by designing a heat exchange coil in the water tank, and then use the casing heat exchanger to heat the preheated warm water to the set temperature and send it out. Thereby, a water tank can meet the dual supply demand of heating and domestic hot water.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

FIG. 1 is a schematic structural diagram of a multifunctional water tank system based on a heat pump unit provided by the present invention.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, but not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1

This embodiment provides a multifunctional water tank system 1 based on a heat pump unit, as shown in FIG. 1 , including a water tank 101 , a heat exchange coil 102 , a casing heat exchanger 103 , a heat pump unit 104 , a floor heating 105 , and a circulating water pump 106, of which:

The heat exchange coil 102 and the casing heat exchanger 103 are fixedly installed at the bottom of the water tank 101 and the middle and upper part of the water tank 101 respectively; the water inlet end of the heat exchange coil 102 is connected to the inlet of the water tank 101 The water outlet is connected to the shell-side water inlet end of the casing-type heat exchanger 103 ; the shell-side water outlet end of the casing-type heat exchanger 103 is connected to the water outlet of the water tank 101 .

The two ends of the tube side of the casing heat exchanger 103 are respectively connected to the refrigerant inlet and the refrigerant outlet of the water tank 101, and are connected to the heat pump unit 104 through the heat preservation pipeline; the heat pump unit in this embodiment can be selected from an air energy heat pump unit. In other embodiments, other heat pump units may also be used, the function of which is to use refrigerant to heat the water in the water tank and/or in the shell side of the casing heat exchanger.

The water tank 101 , the circulating water pump 106 and the floor heating 105 are connected to form a closed cycle through a thermal insulation pipeline.

In this embodiment, the water in the water tank is used as the heat energy source for floor heating, which is a closed cycle and is not used as an external supply of domestic water. Compared with the open cycle, the heat energy loss is small, the energy consumption is low, and the heating efficiency is high; The cold water of the domestic water can also be preheated by the heat exchange coil. When the user uses hot water, the heat exchange coil is used to preheat first, and then it is heated by the casing heat exchanger and the heat pump unit. The user's hot water demand.

It is worth noting that: the water tank is equipped with a water replenishing system (not shown in the figure), which is used as a supplement for the lost water in the water tank.

Embodiment 2

On the basis of the first embodiment, in order to meet the user's water temperature requirements, the multifunctional water tank system 1 based on the heat pump unit of this embodiment is also designed with a water temperature control system. The water temperature control system includes a water tank temperature sensing head 107, an outlet water temperature sensing Head 108, electromagnetic three-way valve 109 and controller and hot water circulation pipeline 1010, wherein:

The water tank temperature sensing head 107 is arranged in the middle of the water tank 101 and is used for real-time detection of the water temperature in the water tank.

The electromagnetic three-way valve 109 is arranged on the hot water pipeline connected to the water outlet of the water tank;

One end of the hot water circulation pipe 1010 is connected to the shell side water inlet end of the casing heat exchanger 103, and the other end is connected to the electromagnetic three-way valve 109;

The outlet water temperature sensing head 108 is arranged on the hot water pipeline and is located at the water inlet end of the electromagnetic three-way valve 109, and is used to detect the outlet water temperature in real time.

The temperature sensing head 107 of the water tank, the temperature sensing head 108 of the water outlet, the electromagnetic three-way valve 109 and the heat pump unit 104 are all connected to the controller (not shown in the figure) with electrical signals. The controller in this embodiment can use a PLC Controller or microcontroller or other type of controller.

According to the multifunctional water tank system based on the heat pump unit, the control method of this embodiment is as follows: when the temperature sensing head of the water tank detects that the water temperature of the water tank is lower than the set water temperature of the water tank, the controller controls the heat pump unit to turn on, and the casing type The heat exchanger heats the water temperature of the water tank to the set temperature to meet the needs of floor heating.

When the user uses hot water, the cold water first passes through the heat exchange coil, and the cold water in the water tank is preheated and heated to warm water. The water in the water tank heats the warm water in the casing heat exchanger, and the heated water flows to the water outlet temperature sensing head. If the water temperature ≥ the set water temperature, it is directly supplied to the user; if the water temperature < the set water temperature, the controller The electromagnetic three-way valve is controlled to switch the channel, the water is introduced into the casing heat exchanger from the hot water circulation pipeline, and the heat pump unit is controlled to open, and the heat pump unit is heated to the set water temperature and then supplied to the user for use.

Embodiment 3

On the basis of Embodiment 3, this embodiment is further provided with a hot water circulation pump 1011 on the hot water circulation pipeline 1010, as the power for forced circulation heating, the hot water circulation pump 1011 and the electromagnetic three-way valve 109 Linkage control, that is: when the outlet water temperature is less than the set outlet temperature, the electromagnetic three-way valve switches to the hot water circulation pipeline, and the hot water circulation pump starts to force the hot water circulation heating until the outlet water temperature meets the set outlet water temperature. temperature up to.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description of the present invention, or directly or indirectly applied to other related technologies Fields are similarly included within the scope of patent protection of the present invention.

Claims (3)

1. a multifunctional water tank system based on heat pump unit, is characterized in that: comprise water tank, heat exchange coil, casing type heat exchanger, heat pump unit, floor heating, circulating water pump, wherein: The heat exchange coil and the casing heat exchanger are respectively fixedly installed at the bottom of the water tank and the middle and upper part of the water tank; The water inlet end of the heat exchange coil is connected to the water inlet of the water tank, and the water outlet end is connected to the shell side water inlet end of the casing heat exchanger; the shell side water outlet end of the casing heat exchanger is connected to the water outlet of the water tank. water outlet; The two ends of the tube side of the casing heat exchanger are respectively connected to the refrigerant inlet and the refrigerant outlet of the water tank, and are connected to the heat pump unit through the heat preservation pipeline; The water tank, the circulating water pump and the floor heating are connected to form a closed cycle through a thermal insulation pipeline. 2. The multifunctional water tank system based on a heat pump unit according to claim 1, characterized in that: further comprising a water temperature control system, the water temperature control system comprising a water tank temperature sensing head, a water outlet temperature sensing head, an electromagnetic three-way valve and a control heaters and hot water circulation pipes, including: The temperature sensing head of the water tank is arranged in the middle of the water tank; The electromagnetic three-way valve is arranged on the hot water pipeline connected to the water outlet of the water tank; One end of the hot water circulation pipe is connected to the shell-side water inlet end of the casing heat exchanger, and the other end is connected to the electromagnetic three-way valve; The water outlet temperature sensing head is arranged on the hot water pipeline and is located at the water inlet end of the electromagnetic three-way valve; The temperature sensing head of the water tank, the temperature sensing head of the water outlet, the electromagnetic three-way valve and the heat pump unit are all connected with the controller by electrical signals. 3. The multifunctional water tank system based on a heat pump unit according to claim 2, wherein a hot water circulation pump is further provided on the hot water circulation pipeline, and the hot water circulation pump and the electromagnetic three-way valve are Linkage control.

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