CN206755576U - Fool type heat pump water heater - Google Patents

Abstract

The utility model discloses a fool formula heat pump water heater, this water heater includes the water tank, a condenser, a compressor, the evaporimeter, the solenoid valve, the flow controller, the pressure-relief valve, jump formula pressure push rod device suddenly, the pressure-relief valve drain pipe, the clean pipe of evaporimeter, the controller and the rivers detection switch who is connected with the controller electricity, the inside slurcam and the push rod that is equipped with of casing of jump formula pressure push rod device suddenly, the slurcam can promote the push rod when casing internal pressure increases, make the handle of push rod promotion pressure-relief valve, and then open the delivery port of pressure-relief valve, the delivery port at the pressure-relief valve is connected to the one end of pressure-relief valve drain pipe, the other end of pressure-relief valve drain pipe is connected with the one end of the clean pipe of evaporimeter through rivers detection switch. The utility model discloses can realize that heat pump key formula heats, pressure-relief valve automated inspection, evaporimeter self-cleaning, the user operation of being convenient for can avoid the water heater efficiency to descend and the water tank takes place to expand the condition of exploding and take place.

Description

Fool type heat pump water heater

technical field

The utility model relates to the technical field of heat pump water heaters, in particular to a fool-type heat pump water heater.

Background technique

At present, common heat pump water heaters on the market usually include a water tank, a condenser, a compressor, an evaporator, a solenoid valve and a throttle. Flow devices are sequentially connected through pipelines to form a water heater circulation system, and a pressure relief valve is installed at the pressure relief port of the water tank. Among them, the heat pump water heater can use the inverse Carnot principle to transfer heat from a low-temperature object to high-temperature water through a medium.

However, the existing heat pump water heaters do not have the automatic cleaning function of the evaporator and the self-test function of the pressure relief valve at all, so the user can only manually clean the evaporator and manually check whether the pressure relief valve is damaged. But the user that has is old man, and child (more users do not have time), does not know how to carry out pressure relief valve detection, more can not be cleaned up for evaporator. Users only want to press a switch, and the device will automatically complete all the work. In addition, since most users do not have the habit of cleaning the evaporator, the energy efficiency of many heat pump water heaters continues to decline; in addition, most users do not know how to detect the pressure relief valve, and when the water inlet is closed and the water inlet is often equipped with a valve (Including the one-way valve to prevent backflow), when the pressure relief valve is damaged, the water will expand when heated, and the water tank will easily explode.

Utility model content

The purpose of the utility model is to overcome the above-mentioned defects in the prior art, and provide a fool-type heat pump water heater with the self-checking function of the pressure relief valve and the automatic cleaning function of the evaporator.

In order to achieve the above object, the utility model provides a fool-type heat pump water heater, including a water tank, a condenser, a compressor, an evaporator, a solenoid valve and a throttle, the condenser is installed inside the water tank, and the condenser , a compressor, an evaporator, a solenoid valve and a restrictor are sequentially connected through pipelines to form a water heater circulation system, and a pressure relief valve is installed at the pressure relief port of the water tank, and the fool-type heat pump water heater also includes a sudden jump pressure push rod device, pressure relief valve drain pipe, evaporator cleaning pipe, water flow detection switch and a controller for controlling the operation of the heat pump water heater. The shell of the jump-type pressure push rod device is provided with a push plate and one end protruding from the shell The push rod of the sudden jump pressure push rod device is connected to the solenoid valve and the restrictor through a pipeline, and the push piece can press the pressure inside the housing of the sudden jump pressure push rod device. When increasing the height, push the push rod to move upwards, so that the push rod pushes the handle of the pressure relief valve, and then opens the water outlet of the pressure relief valve. One end of the drain pipe of the pressure relief valve is connected to the water outlet of the pressure relief valve. The other end of the valve drain pipe is connected to one end of the evaporator cleaning pipe through a water flow detection switch, the other end of the evaporator cleaning pipe extends to the upper part of the evaporator, and the water flow detection switch is electrically connected to the controller.

Preferably, the water flow detection switch is set as a magnetic water flow switch.

Preferably, the magnetic water flow switch includes a special-shaped tube, a magnetic float and a reed switch, the special-shaped tube is connected between the drain pipe of the pressure relief valve and the cleaning pipe of the evaporator, and the magnetic float is installed inside the special-shaped tube, The dry reed switch is packaged on the outer wall of the special-shaped tube and is electrically connected to the controller. The magnetic float can be pushed up by the water flow in the cleaning tube of the evaporator and driven by the magnetic field force to close the dry reed switch.

Preferably, the throttle is configured as a throttle capillary.

Preferably, the water tank is configured as a pressurized water tank.

Preferably, the water inlet pipe and the water outlet pipe of the water tank are respectively provided with valves.

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

The fool-type heat pump water heater of the utility model is equipped with a sudden jump pressure push rod device, a pressure relief valve drain pipe, an evaporator cleaning pipe, a water flow detection switch and a controller. When the heat pump water heater runs to the preset time and/or preset When the temperature is high, the solenoid valve can be controlled to close, so that the internal pressure of the shell of the sudden jump pressure push rod device increases, so that the push piece pushes the push rod to move upward, thereby pushing the handle of the pressure relief valve to open the water outlet of the pressure relief valve; If the water flow detection switch detects that the water in the water tank flows out to the evaporator cleaning pipe through the outlet of the pressure relief valve, the water flow detection switch sends a signal to the controller, and the controller judges that the pressure relief valve has passed the self-test and allows the heat pump water heater to continue heating ; If the water flow detection switch does not detect that the water in the water tank flows out to the evaporator cleaning pipe through the outlet of the pressure relief valve, the controller determines that the self-test of the pressure relief valve is unqualified, and stops the heating of the heat pump water heater to protect the water tank; The water flowing out of the water outlet of the pressure relief valve to the evaporator cleaning pipe can be sprayed from the upper part of the evaporator to clean the evaporator. The fool-type heat pump water heater of the utility model can realize one-button heating of the heat pump, automatic detection of the pressure relief valve, and automatic cleaning of the evaporator.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present utility model. Those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Fig. 1 is the structural representation of the fool type heat pump water heater provided by the utility model;

Fig. 2 is an enlarged view of the structure of the pressure relief valve and the sudden jump pressure push rod device provided by the utility model;

Fig. 3 is an enlarged view of the structure of the magnetic water flow switch provided by the utility model.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, the embodiment of the utility model provides a kind of fool type heat pump water heater, this fool type heat pump water heater comprises water tank 1, condenser 2, compressor 3, evaporator 4, solenoid valve 5 and restrictor, condensing The water heater 2 is installed inside the water tank 1, and the condenser 2, the compressor 3, the evaporator 4, the solenoid valve 5 and the restrictor are sequentially connected through pipelines to form a water heater circulation system, and a pressure relief valve is installed at the pressure relief port of the water tank 1 7. The pressure relief valve 7 has a handle 71 capable of opening/closing the water outlet and a spring 72 arranged inside.

In this embodiment, the water tank 1 can be set as a pressure-bearing water tank, and the water inlet pipe and the water outlet pipe of the water tank 1 are respectively provided with valves 13 .

In this embodiment, the throttling device can preferably be set as a throttling capillary 6. The main function of the throttling capillary 6 is throttling. The inner diameter of the throttling capillary 6 is small, so it is easy to form a high pressure in the condenser 2, which is beneficial to the cooling of the refrigerant. Condensation in condenser 2 releases heat. Since the compressor 3 sucks the refrigerant in the evaporator 4 , a low pressure zone is formed in the evaporator 4 . The refrigerant flowing through the throttling capillary 6 enters the evaporator to vaporize and absorb heat.

As a further improvement of this embodiment, the fool-type heat pump water heater also includes a sudden jump pressure push rod device 8, a pressure relief valve drain pipe 11, an evaporator cleaning pipe 9, a water flow detection switch and a controller for controlling the operation of the heat pump water heater 10.

As shown in Fig. 1 and Fig. 2, the housing 81 of the sudden jump pressure push rod device 8 is provided with a push piece 82 (which can be made of sheet metal) and a push rod 83 with one end protruding from the housing 81. The connection port of the housing 81 of the pressure push rod device 8 is connected between the solenoid valve 5 and the throttle through a pipeline. Push the push rod 83 to move upwards, so that the push rod 83 pushes the handle 71 of the pressure relief valve 7, and then opens the water outlet of the pressure relief valve 7.

As shown in Figure 1, one end of the pressure relief valve drain pipe 11 is connected to the water outlet of the pressure relief valve, and the other end of the pressure relief valve drain pipe 11 is connected to one end of the evaporator cleaning pipe 9 through the water flow detection switch 12, and the evaporator The other end of the cleaning pipe 9 extends to the upper part of the evaporator 4 , and the water flow detection switch is electrically connected with the controller 10 .

In this embodiment, the water flow detection switch can preferably be set as a magnetic water flow switch 12 . As shown in Figure 3, specifically, the magnetic water flow switch 12 includes a special-shaped tube 121, a magnetic float 122 and a reed switch 123, and the special-shaped tube 121 is connected between the pressure relief valve drain pipe 11 and the evaporator cleaning pipe 9. The float 122 is installed inside the special-shaped tube 121 , the specific gravity of the magnetic float 122 is slightly larger than that of water, and the reed switch 123 is packaged on the outer wall of the special-shaped tube 121 and electrically connected with the controller 10 .

When the magnetic float 122 is pushed up by the water flow in the evaporator cleaning tube 9 , the reed switch 123 will be closed and conducted by the magnetic field force of the magnetic float 122 , and a signal can be sent to the controller 10 at this time. When there is no water flow, the magnetic float 122 sinks, and the magnetic field force of the magnetic float 122 is weakened, and the reed switch 123 is disconnected.

It should be noted here that the water flow detection switch can also adopt other structures or other common detectors on the market, as long as it can accurately detect whether there is water flowing through the evaporator cleaning tube, it can be implemented, and is not limited to the ones in this embodiment. The magnetic water flow switch described above.

The embodiment of the present utility model also provides a self-checking and cleaning method using the above-mentioned fool-type heat pump water heater, which includes the following steps:

(1) When the heat pump water heater runs to the preset time and/or preset temperature, the control solenoid valve 5 is closed, so that the internal pressure of the shell 81 of the sudden jump pressure push rod device 8 increases, and the push piece 82 pushes the push rod 83 Move upwards to push the handle 71 of the pressure relief valve 7 to open the water outlet of the pressure relief valve 7;

(2) Detect whether the water in the water tank 1 flows out to the evaporator cleaning pipe 9 through the water outlet of the pressure relief valve 7 through the water flow detection switch;

(3) If the water flow detection switch detects that the water in the water tank 1 flows out to the evaporator cleaning pipe 9 through the water outlet of the pressure relief valve 7 (that is, when the magnetic float 122 is pushed up by the water to make the reed switch 123 close), then The water flow detection switch sends a signal to the controller 10, and the controller 10 judges that the self-test of the pressure relief valve 7 is qualified, allowing the heat pump water heater to continue heating;

If the water flow detection switch does not detect that the water in the water tank 1 flows out to the evaporator cleaning pipe 9 through the water outlet of the pressure relief valve 7 (that is, the reed switch 123 is not closed), then the controller 10 determines that the pressure relief valve 7 is not self-tested. Qualified, stop the heating of the heat pump water heater to protect the water tank 1, and the display shows that the pressure relief valve is faulty;

(5) The water flowing out to the evaporator cleaning pipe 9 is evenly sprayed from the top of the evaporator 4 to clean the evaporator 4;

(6) When the self-test of the pressure relief valve 7 is completed, the control solenoid valve 5 is opened to reduce the internal pressure of the housing 81 of the sudden jump pressure push rod device 8, so that the push piece 82 drives the push rod 83 to move downward, and at the same time unloads The handle 71 of the pressure valve 7 resets under the action of the inner spring 72 .

The volume of the water in the heat pump water tank will expand after being heated. The initial expansion is elastic and will not exceed 0.7MPa. Therefore, the heat pump water heater can perform a self-test of the pressure relief valve when it runs to a preset temperature of 35°C to 40°C. When the compressor starts for more than 3 minutes, it can power on the solenoid valve and close the solenoid valve. During specific implementation, the self-inspection process of the pressure relief valve 7 can be controlled within 5 seconds to 10 seconds.

To sum up, the utility model fool-type heat pump water heater can realize one-button heating of the heat pump, automatic detection of the pressure relief valve, automatic cleaning of the evaporator, which is convenient for users to operate, and can avoid the decline in energy efficiency of the heat pump water heater and the expansion of the water tank. occur.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (6)

1. A fool-type heat pump water heater, comprising a water tank, a condenser, a compressor, an evaporator, a solenoid valve and a throttle, the condenser is installed inside the water tank, the condenser, the compressor, the evaporator, the electromagnetic The valve and the restrictor are sequentially connected through pipelines to form a water heater circulation system. A pressure relief valve is installed at the pressure relief port of the water tank, and it is characterized in that it also includes a sudden jump pressure push rod device, a pressure relief valve drain pipe, an evaporation Cleaning pipe of the device, a water flow detection switch and a controller used to control the operation of the heat pump water heater. The shell of the sudden jump pressure push rod device is provided with a push piece and a push rod with one end protruding from the shell. The connection port of the housing of the pressure push rod device is connected to the solenoid valve and the restrictor through a pipeline, and the push piece can push the push rod to move upward when the pressure inside the housing of the sudden jump pressure push rod device increases, Make the push rod push the handle of the pressure relief valve, and then open the water outlet of the pressure relief valve, one end of the drain pipe of the pressure relief valve is connected to the water outlet of the pressure relief valve, and the other end of the drain pipe of the pressure relief valve passes the water flow detection The switch is connected with one end of the evaporator cleaning pipe, the other end of the evaporator cleaning pipe extends to the upper part of the evaporator, and the water flow detection switch is electrically connected with the controller. 2. The fool-type heat pump water heater according to claim 1, wherein the water flow detection switch is set as a magnetic water flow switch. 3. The fool-type heat pump water heater according to claim 2, wherein the magnetic water flow switch includes a special-shaped pipe, a magnetic float and a reed switch, and the special-shaped pipe is connected between the drain pipe of the pressure relief valve and the cleaning pipe of the evaporator Between, the magnetic float is installed inside the special-shaped tube, the reed switch is packaged on the outer wall of the special-shaped tube and electrically connected to the controller, the magnetic float can be pushed up by the water flow in the evaporator cleaning tube and pass through The magnetic force drives the reed switch to close and conduct. 4. The fool-type heat pump water heater according to claim 1, characterized in that, the throttle is set as a throttle capillary. 5. The fool-type heat pump water heater according to claim 1, characterized in that, the water tank is configured as a pressurized water tank. 6. The fool-type heat pump water heater according to claim 1, characterized in that valves are respectively provided on the water inlet pipe and the water outlet pipe of the water tank.