CN219976624U - Water system air conditioner - Google Patents

Abstract

The utility model provides a water system air conditioner, relates to the technical field of air conditioners, and aims to solve the problem of low cleaning efficiency of a filter in a water circulation loop. The water system air conditioner comprises a water circulation loop and a filter screen cleaning device, wherein the water circulation loop comprises a water pump, a heat exchanger and a filter which are sequentially connected, and the filter screen cleaning device is connected with the filter. The water system air conditioner provided by the utility model can improve the cleaning efficiency of the filter.

Description

Water system air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a water system air conditioner.

Background

In water system air conditioners, a filter screen is generally arranged in a water pipeline to filter impurities in water flow. After long-time use, the filter screen is easy to be dirty and blocked, so that water flow is unsmooth, and the heat exchange effect is affected. Currently, in order to solve the problem of filter screen filth blockage, the filter screen is generally cleaned manually by a user or a maintenance person. However, by adopting a manual cleaning mode, the operation is complex, the working environment is poor, cleaning is easy and not timely, and the high-efficiency operation of the water system air conditioner cannot be ensured.

Disclosure of Invention

The first object of the present utility model is to provide a water system air conditioner, which solves the technical problem of low cleaning efficiency of the filter in the existing water circulation loop.

The water system air conditioner comprises a water circulation loop and a filter screen cleaning device, wherein the water circulation loop comprises a water pump, a heat exchanger and a filter which are sequentially connected, and the filter screen cleaning device is connected with the filter.

The water system air conditioner has the beneficial effects that:

through setting up filter screen belt cleaning device, can appear filth blocking up at the filter, influence the flow resistance of hydrologic cycle return circuit, when reducing discharge, self-cleaning filter screen is clear away the plug on the filter screen for the flow resistance of hydrologic cycle return circuit reduces to normal level, and hydrologic cycle return circuit keeps unblocked.

In a preferred technical scheme, the water circulation loop comprises a first stop valve, and the first stop valve is positioned between the first liquid outlet of the filter and the water pump.

By arranging the first stop valve between the first liquid outlet of the filter and the water pump, the water circulation loop between the first liquid outlet and the water pump can be cut off by the stop valve, so that after the filter screen is flushed by the flushing water, the flushing water is not discharged from the first liquid outlet which is normally output, and the flushing water cannot continuously enter the water pump.

In the preferred technical scheme, filter screen belt cleaning device includes scrubbing pump and second stop valve, the export of scrubbing pump with the liquid inlet intercommunication of filter, the second stop valve intercommunication in the second liquid outlet of filter.

Through setting up the scrubbing pump, can directly input outside fluid in the hydrologic cycle return circuit to wash the filter, the loss of fluid energy is less, is favorable to more thoroughly with the deposit on the filter screen clean. And the second stop valve can control the on-off of the second liquid outlet of the filter, when the second stop valve is closed, the second liquid outlet of the filter is blocked, and water entering the filter cannot be discharged from the second liquid outlet. And when the second shut-off valve is opened, the second liquid outlet of the filter is opened, and water entering the filter can be discharged from the second liquid outlet. Therefore, when the filter is required to be cleaned by the filter screen cleaning device, the dirt removing pump can be turned on to fill water into the filter, and the second stop valve is turned on to close the first stop valve, so that the washed water only flows out of the second liquid outlet and does not flow out of the first liquid outlet, and the water mixed with dirt and blockage is discharged.

In the preferred technical scheme, filter screen belt cleaning device still includes the washwater tank, the entry of scrubbing pump with the washwater tank intercommunication, the export of second stop valve with the washwater tank intercommunication.

Through setting up the wash tank in order to communicate with the entry of scrubbing pump and the export of second stop valve, can directly utilize the scrubbing pump to draw water in order to wash the filter from the wash tank, because the sewage that contains dirty plug that discharges after washing the filter can deposit, wash the interval and also be enough to realize more complete deposit moreover, so need not to draw water again in order to wash when washing at every turn, practiced thrift the water resource.

In a preferred technical scheme, the filter screen cleaning device further comprises a third stop valve, and the third stop valve is located between the outlet of the decontamination pump and the water circulation loop.

By arranging the third stop valve, the communication between the decontamination pump and the water circulation loop can be independently controlled, and the normal operation of the water circulation loop can not be influenced when the decontamination pump and the water circulation loop are blocked. When need not to wash the filter, can all close second stop valve and third stop valve to cut off the interact between hydrologic cycle return circuit and the filter screen belt cleaning device, guarantee hydrologic cycle return circuit's normal operating.

In a preferred technical scheme, the water circulation loop further comprises a fourth stop valve, wherein the fourth stop valve is positioned between the heat exchanger and a connecting point of the third stop valve and the water circulation loop.

By arranging the fourth stop valve in the water circulation loop, when the filter screen cleaning device cleans the filter screen, the fourth stop valve is closed and matched with the closing of the first stop valve, and the rest part of the water circulation loop is separated from the cleaning related area, so that the influence of cleaning liquid is avoided.

In the preferred technical scheme, filter screen belt cleaning device still includes electronic three-way valve, electronic three-way valve's first port with the heat exchanger is connected, electronic three-way valve's second port with the filter is connected, electronic three-way valve's third port then with the exit linkage of scrubbing pump, electronic three-way valve is used for in the intercommunication the heat exchanger with the filter, with the intercommunication the scrubbing pump with switch between the filter.

Through setting up an electronic three-way valve, connect in the junction point department of the export pipeline of scrubbing pump and hydrologic cycle return circuit, can realize the function of two valves of foretell third stop valve and fourth stop valve, be favorable to simplifying the system configuration, reduction in production cost.

In a preferred technical scheme, the connecting line of the liquid inlet and the first liquid outlet of the filter and the filter screen of the filter form an acute included angle.

When the connecting line and the filter screen are arranged at an acute angle, and the water flow entering from the liquid inlet impacts the dirty and blocked matters on the filter screen, the dirty and blocked matters are more easily separated from the filter screen, so that the cleaning efficiency is improved. In addition, the area of the filter screen is larger, and even if the same total amount of filth blockage is accumulated, the blockage degree of the filter screen is reduced, so that the cleaning interval is prolonged.

In the preferred technical scheme, the water pump is a variable-frequency water pump.

The variable-frequency water pump is arranged, so that the duty ratio of the water pump can be obtained, and the water running condition in the water circulation loop can be judged according to the duty ratio of the driving signal of the water pump, so as to judge whether the filter needs to be cleaned or not.

In the preferred technical scheme, an inlet of the heat exchanger is provided with an inlet temperature sensor, and an outlet of the heat exchanger is provided with an outlet temperature sensor.

Through setting up import temperature sensor and export temperature sensor, can detect the difference in temperature between the export and the entry of heat exchanger, can judge the smooth and easy degree of rivers in hydrologic cycle return circuit according to the difference in temperature to the jam degree of supplementary judgement filter.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or background art of the present utility model, the drawings that are needed in the description of the embodiments or background art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a water air conditioner according to a first embodiment of the present utility model;

fig. 2 is a schematic structural diagram of another implementation manner of a water air conditioner according to a first embodiment of the present utility model.

Reference numerals illustrate:

11-a water pump; 12-a heat exchanger; 13-a filter; 14-a first shut-off valve; 15-a fourth shut-off valve; 16-an outlet temperature sensor; 17-an inlet temperature sensor;

21-a decontamination pump; 22-a second shut-off valve; 23-a third stop valve; 24-cleaning a water tank; 25-an electric three-way valve;

31-fin heat exchanger; 32-an electronic expansion valve; 33-compressor.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Embodiment one:

fig. 1 is a schematic structural diagram of a water system air conditioner according to an embodiment of the present utility model. As shown in fig. 1, the water system air conditioner provided by the embodiment of the utility model comprises a water circulation loop and a filter screen cleaning device, wherein the water circulation loop comprises a water pump 11, a heat exchanger 12 and a filter 13 which are sequentially connected, and the filter screen cleaning device is connected with the filter 13.

In this embodiment, the heat exchanger 12 may be a plate heat exchanger, and an inlet temperature sensor 17 and an outlet temperature sensor 16 are further disposed at the inlet and the outlet of the plate heat exchanger, respectively.

Through setting up filter screen belt cleaning device, can appear filth blocking up at filter 13, influence the flow resistance of hydrologic cycle return circuit, when reducing water flow, self-cleaning filter screen is clear away the plug on the filter screen for the flow resistance of hydrologic cycle return circuit reduces to normal level, and hydrologic cycle return circuit keeps unblocked.

As shown in fig. 1, the water circulation circuit preferably includes a first shut-off valve 14, the first shut-off valve 14 being located between the first liquid outlet of the filter 13 and the water pump 11.

Wherein the filter 13 has a liquid inlet and two liquid outlets, a first liquid outlet and a second liquid outlet, a screen of the filter 13 is located between the liquid inlet and the first liquid outlet, at least part of dirt in the water flow is left on the screen when the water flow passes through the screen, and the remaining cleaner water passes through the screen and flows to the water pump 11 through the first liquid outlet. Moreover, the second liquid outlet of the first shut-off valve 14 is offset from the water circulation circuit, and when the filter screen is rinsed by the water flow for rinsing, the plugs adhering to the filter screen can be rinsed off and discharged from the second liquid outlet together with the rinsing water.

By providing the first shut-off valve 14 between the first liquid outlet of the filter 13 and the water pump 11, the water circulation circuit between the first liquid outlet and the water pump 11 can be shut off by the shut-off valve, so that after flushing the filter screen with flushing water, the flushing water is not discharged from the first liquid outlet which is normally output, and does not continue to enter the water pump 11.

In addition to the implementation described later, for example, the water pump 11 may be used to output water to clean the filter screen of the filter 13, so that the first stop valve 14 is closed at this time, and the rinsed water is discharged from the second liquid outlet. Of course, with this implementation, since the path through which the water output from the water pump 11 flows is long, the fluid pressure loss is large, which is not preferable to the implementation described later.

As shown in fig. 1, the screen cleaning apparatus preferably includes a dirt removing pump 21 and a second shut-off valve 22, the outlet of the dirt removing pump 21 being in communication with the liquid inlet of the filter 13, and the second shut-off valve 22 being in communication with the second liquid outlet of the filter 13.

In this embodiment, the filter screen in the second filter 13 may be disposed obliquely, and specifically, a line connecting the liquid inlet and the first liquid outlet of the filter 13 forms an acute included angle with the filter screen.

By arranging the dirt removing pump 21, external fluid can be directly input into the water circulation loop to wash the filter 13, so that the loss of fluid energy is small, and the filter screen is beneficial to thoroughly cleaning residues on the filter screen. And the second stop valve 22 can control the on-off of the second liquid outlet of the filter 13, when the second stop valve 22 is closed, the second liquid outlet of the filter 13 is blocked, and the water entering the filter 13 cannot be discharged from the second liquid outlet. And the second shut-off valve 22 is opened, the second liquid outlet of the filter 13 is opened, and water entering the filter 13 can be discharged from the second liquid outlet. Therefore, when the filter 13 needs to be cleaned by the screen cleaning device, the dirt removing pump 21 can be turned on to fill water into the filter 13, and the second stop valve 22 can be turned on to close the first stop valve 14, so that the washed water only flows out from the second liquid outlet and not flows out from the first liquid outlet, and the water mixed with dirt and blockage can be discharged.

As shown in fig. 1, the screen washing apparatus preferably further includes a washing water tank 24, an inlet of the soil removing pump 21 is communicated with the washing water tank 24, and an outlet of the second shut-off valve 22 is communicated with the washing water tank 24.

The inlet of the decontamination pump 21 is connected to the cleaning water tank 24, and the outlet of the second shut-off valve 22 is also connected to the cleaning water tank 24, but the sewage discharged from the second shut-off valve 22 to the cleaning water tank 24 can be deposited in the cleaning water tank 24 due to the large cleaning water tank 24, and the dirty and blocked matter falls to the bottom of the cleaning water tank 24 and is not sucked by the decontamination pump 21.

By arranging the cleaning water tank 24 to communicate with the inlet of the scrubbing pump 21 and the outlet of the second shut-off valve 22, the scrubbing pump 21 can be directly utilized to pump water from the cleaning water tank 24 to flush the filter 13, and since the sewage containing dirt and blockage discharged after flushing the filter 13 can be precipitated, and the flushing interval is sufficient to achieve relatively complete precipitation, the water does not need to be pumped again for flushing during each flushing, thereby saving water resources.

Of course, in another implementation, the sewage pump 21 may be externally connected with a water source, or the sewage at the outlet of the second stop valve 22 may be discharged.

As shown in fig. 1, the screen washing apparatus preferably further includes a third shut-off valve 23, and the third shut-off valve 23 is located between the outlet of the soil removal pump 21 and the water circulation circuit.

Specifically, the third shut-off valve 23 is located between the outlet of the desmutting pump 21 and the connection point of the outlet line of the desmutting pump 21 and the water circulation circuit.

By providing the third stop valve 23, the communication between the decontamination pump 21 and the water circulation loop can be independently controlled, and the normal operation of the water circulation loop is not affected when the decontamination pump 21 and the water circulation loop are blocked. When the filter 13 is not required to be cleaned, the second stop valve 22 and the third stop valve 23 can be closed to block the interaction between the water circulation loop and the filter screen cleaning device, so that the normal operation of the water circulation loop is ensured.

As shown in fig. 1, the water circulation circuit preferably further comprises a fourth shut-off valve 15, the fourth shut-off valve 15 being located between the heat exchanger 12 and the connection point of the third shut-off valve 23 to the water circulation circuit.

By providing the fourth stop valve 15 in the water circulation circuit, when the filter screen cleaning device cleans the filter screen, the fourth stop valve 15 is closed and the first stop valve 14 is closed, so that the rest part of the water circulation circuit is separated from the cleaning area, and the influence of the cleaning liquid is avoided.

Preferably, the line connecting the liquid inlet of the filter 13 and the first liquid outlet forms an acute angle with the screen of the filter 13.

When the connecting line and the filter screen are arranged at an acute angle, and the water flow entering from the liquid inlet impacts the dirty and blocked matters on the filter screen, the dirty and blocked matters are more easily separated from the filter screen, so that the cleaning efficiency is improved. In addition, the area of the filter screen is larger, and even if the same total amount of filth blockage is accumulated, the blockage degree of the filter screen is reduced, so that the cleaning interval is prolonged.

Preferably, the water pump 11 is a variable frequency water pump 11.

The variable frequency water pump 11 is provided, so that the duty ratio of the water pump 11 can be obtained, and the water running condition in the water circulation loop can be judged according to the duty ratio of the driving signal of the water pump 11, so as to judge whether the filter 13 needs to be cleaned or not.

Preferably, the inlet of the heat exchanger 12 is provided with an inlet temperature sensor 17 and the outlet of the heat exchanger 12 is provided with an outlet temperature sensor 16.

By providing the inlet temperature sensor 17 and the outlet temperature sensor 16, the temperature difference between the outlet and the inlet of the heat exchanger 12 can be detected, and the degree of smoothness of the water flow of the water circulation circuit can be judged based on the temperature difference, so as to assist in judging the degree of clogging of the filter 13.

The first stop valve 14, the second stop valve 22, the third stop valve 23, and the fourth stop valve 15 may be electric two-way valves.

In addition, in this embodiment, the water system air conditioner further includes a refrigerant system, where the refrigerant system includes an electronic expansion valve 32, a fin heat exchanger 31, a compressor 33, and a plate heat exchanger sequentially connected, and the plate heat exchanger is used for performing heat exchange with circulating water in the water circulation loop. When the water circulation loop is required to heat, the refrigerant system transfers heat to the water circulation loop through the plate heat exchanger, and when the water circulation loop is required to refrigerate, the circulating water in the water circulation loop transfers heat to the refrigerant system through the plate heat exchanger.

The action principle of the embodiment is as follows:

when the water circulation circuit supports water circulation, the first and fourth shut-off valves 14 and 15 are in an open state, and the second and third shut-off valves 22 and 23 are in a closed state. The water circulation loop is conducted. Therefore, the circulating water is sent to the heat exchanger 12 under the action of the water pump 11, exchanges heat with the refrigerant in the heat exchanger 12, then flows through the fourth stop valve 15, is filtered by the filter screen of the filter 13 in the filter 13, and filters the filter residues, thereby avoiding returning to the water pump 11.

When it is necessary to clean the filter 13, the first shut-off valve 14 and the fourth shut-off valve 15 are closed, the second shut-off valve 22 and the third shut-off valve 23 are opened, and the water pump 11 is closed. The scrubbing pump 21 is turned on, and the scrubbing pump 21 sucks water in the washing tank 24 and washes the screen of the filter 13 through the third shut-off valve 23 and into the filter 13. Flushing the surface of the screen, clearing the plugs, and flowing through the second liquid outlet and the second shut-off valve 22 into the purge tank 24. Because the purge tank 24 is relatively bulky, the purge tank 24 can be utilized to precipitate plugs without consuming fresh water.

Embodiment two:

as shown in fig. 2, a second embodiment of the present utility model further provides a water system air conditioner, which is mostly the same as the first embodiment, and differs only in that: the filter screen cleaning device further comprises an electric three-way valve 25, a first port of the electric three-way valve 25 is connected with the heat exchanger 12, a second port of the electric three-way valve 25 is connected with the filter 13, a third port of the electric three-way valve 25 is connected with an outlet of the decontamination pump 21, and the electric three-way valve is used for switching between communicating the heat exchanger 12 with the filter 13 and communicating the decontamination pump 21 with the filter 13.

By arranging the electric three-way valve 25, the functions of the third stop valve 23 and the fourth stop valve 15 can be realized by connecting the outlet pipeline of the decontamination pump 21 with the connecting point of the water circulation loop, which is beneficial to simplifying the system structure and reducing the production cost.

Although the present utility model is disclosed above, the present utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model should be assessed accordingly to that of the appended claims.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the above embodiments, descriptions of orientations such as "up", "down", and the like are shown based on the drawings.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model.

Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a water system air conditioner which characterized in that, includes water circulation circuit and filter screen belt cleaning device, water circulation circuit is including water pump (11), heat exchanger (12) and filter (13) that connect gradually, filter screen belt cleaning device with filter (13) are connected.

2. The water system air conditioner according to claim 1, characterized in that the water circulation circuit comprises a first shut-off valve (14), the first shut-off valve (14) being located between the first liquid outlet of the filter (13) and the water pump (11).

3. The water system air conditioner according to claim 2, wherein the screen cleaning device comprises a dirt removing pump (21) and a second stop valve (22), the outlet of the dirt removing pump (21) is communicated with the liquid inlet of the filter (13), and the second stop valve (22) is communicated with the second liquid outlet of the filter (13).

4. A water system air conditioner according to claim 3, wherein the filter screen cleaning device further comprises a cleaning water tank (24), the inlet of the dirt removing pump (21) is communicated with the cleaning water tank (24), and the outlet of the second shut-off valve (22) is communicated with the cleaning water tank (24).

5. A water system air conditioner according to claim 3, characterized in that the screen washing device further comprises a third shut-off valve (23), the third shut-off valve (23) being located between the outlet of the dirt removal pump (21) and the water circulation circuit.

6. The water system air conditioner according to claim 5, characterized in that the water circulation circuit further comprises a fourth shut-off valve (15), the fourth shut-off valve (15) being located between the heat exchanger (12) and the connection point of the third shut-off valve (23) to the water circulation circuit.

7. A water system air conditioner according to claim 3, characterized in that the filter screen cleaning device further comprises an electric three-way valve (25), a first port of the electric three-way valve (25) is connected with the heat exchanger (12), a second port of the electric three-way valve (25) is connected with the filter (13), a third port of the electric three-way valve (25) is connected with an outlet of the dirt removing pump (21), and the electric three-way valve is used for switching between communicating the heat exchanger (12) with the filter (13) and communicating the dirt removing pump (21) with the filter (13).

8. A water system air conditioner according to claim 3, characterized in that the line connecting the liquid inlet of the filter (13) and the first liquid outlet forms an acute angle with the screen of the filter (13).

9. The water system air conditioner according to any one of claims 1 to 8, wherein the water pump (11) is a variable frequency water pump (11).

10. A water system air conditioner according to any one of claims 1-8, characterized in that the inlet of the heat exchanger (12) is provided with an inlet temperature sensor (17) and the outlet of the heat exchanger (12) is provided with an outlet temperature sensor (16).