Hot water heat storage tank of photo-thermal hot water absorption heat pump

Abstract

The utility model relates to the technical field of solar heat utilization, in particular to a hot water heat storage tank of a photo-thermal hot water absorption heat pump. The system comprises a solar water heater and a first-stage hot water heat storage tank installed on the solar water heater, the first-stage hot water heat storage tank is connected with an absorption heat pump through a hot water pipeline of the first-stage hot water heat storage tank, and the system further comprises at least one independently-arranged second-stage hot water heat storage tank. And the second-stage hot water heat storage tank is connected with the absorption heat pump through a hot water pipeline of the second-stage hot water heat storage tank and a hot water pipeline of the first-stage hot water heat storage tank. According to the hot water heat storage tank system of the photo-thermal hot water absorption heat pump, at least two hot water supply pipelines are adopted, the operation mode of the system is freely switched under the condition that the absorption heat pump works or is idle, the annual utilization rate of a solar water heater can be remarkably improved, the application range of the solar water heater is expanded, and the energy consumption is reduced. Heating in winter and refrigerating in non-heating seasons.

Description

TECHNICAL FIELD

[0001] The utility model relates to solar energy heat utilization technical field especially relates to a kind of hot water storage tank of light heat water absorption type heat pump. BACKGROUND

[0002] Current solar energy heat utilization system is mainly low-temperature heat utilization system, and the water temperature of hot water heated by solar water heater can be 60-80 ℃, which is used for building heating in winter. However, after the winter heating is over, this part of hot water cannot be utilized, and if there is no suitable use, on the one hand, this part of solar hot water resource is wasted, and on the other hand, if the solar water heater is stopped, the service life of the solar water heater will be affected. Therefore, finding a hot water use of solar energy in non-heating season is an important problem of annual solar energy utilization.

[0003] At present, in non-heating season, especially in summer, the hot water generated by solar water heater is refrigerated by absorption heat pump. However, the water supply of solar water heater is often discontinuous, and it takes a certain period of time to heat the water to a certain temperature, so in order to continuously operate the absorption heat pump in the cooling stage, hot water needs to be continuously supplied as a driving heat source, so a hot water storage tank of solar water heater needs to be set to cooperate with the continuous operation of the absorption heat pump, so as to achieve the purpose of continuous utilization of winter heating and non-heating season refrigeration. SUMMARY

[0004] The utility model aims at the technical problem that the water supply of solar water heater is often discontinuous in the background art, and provides a hot water storage tank of light heat water absorption type heat pump.

[0005] The technical scheme of the utility model: a hot water storage tank of light heat water absorption type heat pump, comprising a solar water heater and a first-stage hot water storage tank installed on the solar water heater, the first-stage hot water storage tank is connected with an absorption heat pump through a first-stage hot water storage tank hot water pipeline, and further comprising at least one second-stage hot water storage tank independently arranged, the second-stage hot water storage tank is connected with the absorption heat pump through a second-stage hot water storage tank hot water pipeline and a first-stage hot water storage tank hot water pipeline.

[0006] Optionally, one side of the second-stage hot water storage tank is connected with a second-stage hot water storage tank water inlet pipe, and the other side is connected with a second-stage hot water storage tank water outlet pipe, an inlet valve is installed on the second-stage hot water storage tank water inlet pipe, and an outlet valve is installed on the second-stage hot water storage tank water outlet pipe.

[0007] Optionally, the second-stage hot water storage tank is internally provided with a water distributor and a tilted temperature layer, wherein the water distributor is arranged on one side of the tilted temperature layer close to the second-stage hot water storage tank water inlet pipe.

[0008] Optionally, one side of the absorption heat pump is connected with an absorption heat pump water supply pipe, and the absorption heat pump water supply pipe is connected with the second-stage hot water storage tank hot water pipeline and the first-stage hot water storage tank hot water pipeline respectively.

[0009] Optionally, the first-stage hot water storage tank hot water pipeline is respectively provided with an adjusting valve one and an adjusting valve two, and the adjusting valve one is connected with the inlet valve and the adjusting valve two in series, and the inlet valve and the adjusting valve two are arranged in parallel.

[0010] Optionally, when the absorption heat pump works, hot water is supplied by the first-stage hot water storage tank first, and then by the second-stage hot water storage tank.

[0011] Optionally, when the absorption heat pump does not work, hot water is supplied from the first-stage hot water storage tank to the second-stage hot water storage tank.

[0012] Compared with the prior art, the application has the following beneficial technical effects:

[0013] The hot water storage tank system of the light-heat hot water absorption heat pump adopts at least two hot water supply pipelines, can freely switch the operation mode of the system when the absorption heat pump works or is idle, can significantly improve the annual utilization rate of the solar water heater, expand the application range of the solar water heater, provide heating in winter and refrigeration in non-heating seasons. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The system schematic diagram of the light-heat hot water absorption heat pump hot water storage tank structure is given.

[0015] Mark: 1, solar water heater; 2, first-stage hot water storage tank; 3, first-stage hot water storage tank hot water pipeline; 4, absorption heat pump; 5, second-stage hot water storage tank; 6, water distributor; 7, inclined temperature layer; 8, second-stage hot water storage tank water inlet pipe; 9, second-stage hot water storage tank water outlet pipe; 10, adjusting valve one; 11, inlet valve; 12, second-stage hot water storage tank hot water pipeline; 13, adjusting valve two; 14, outlet valve; 15, absorption heat pump water supply pipe. DETAILED DESCRIPTION

[0016] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiments are a part of the embodiments of the utility model, rather than all the embodiments.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] like Figure 1 As shown, this utility model proposes a hot water storage tank for a solar thermal absorption heat pump, comprising a solar water heater 1 and a first-stage hot water storage tank 2 installed on the solar water heater 1. The first-stage hot water storage tank 2 is connected to an absorption heat pump 4 via a first-stage hot water storage tank hot water pipe 3. It also includes at least one independently installed second-stage hot water storage tank 5, which is connected to the absorption heat pump 4 via a second-stage hot water storage tank hot water pipe 12 and a first-stage hot water storage tank hot water pipe 3. The first-stage hot water storage tank 2 is a built-in hot water storage tank of the solar water heater 1, while the second-stage hot water storage tank 5 is separately installed, generally comprising two or more independent solar water heater units. One side of the absorption heat pump 4 is connected to an absorption heat pump water supply pipe 15, which is connected to both the second-stage hot water storage tank hot water pipe 12 and the first-stage hot water storage tank hot water pipe 3. Both hot water pipes can supply hot water to the absorption heat pump 4 simultaneously or individually.

[0019] In this embodiment, the second-stage hot water storage tank 5 is equipped with a water distributor 6 and a temperature gradient layer 7. The water distributor 6 is located on the side of the temperature gradient layer 7 near the inlet pipe 8 of the second-stage hot water storage tank. The water distributor 6 can evenly supply hot water into the second-stage hot water storage tank 5, and at the same time, in conjunction with the changes in the temperature gradient layer 7, it can control the temperature and safety of the second-stage hot water storage tank 5.

[0020] Furthermore, one side of the second-stage hot water storage tank 5 is connected to the inlet pipe 8, and the other side is connected to the outlet pipe 9. An inlet valve 11 is installed on the inlet pipe 8, and an outlet valve 14 is installed on the outlet pipe 9. A regulating valve 10 and a regulating valve 2 13 are installed on the hot water pipeline 3 of the first-stage hot water storage tank. The regulating valve 10 is connected in series with both the inlet valve 11 and the regulating valve 2 13, while the inlet valve 11 and the regulating valve 2 13 are connected in parallel.

[0021] When the absorption heat pump 4 is working, hot water is supplied first by the first-stage hot water storage tank 2, and then by the second-stage hot water storage tank 5.

[0022] When the absorption heat pump 4 is not working, the first stage hot water storage tank 2 supplies hot water to the second stage hot water storage tank 5.

[0023] The working principle of the embodiment is as follows: in the non-heating season, the hot water generated by the solar water heater 1 is stored in the first stage hot water storage tank 2. When the absorption heat pump 4 starts working, the first stage hot water storage tank 2 supplies water, at this time, the regulating valve one 10 and the regulating valve two 13 are opened, and the inlet valve 11 and the outlet valve 14 are closed. The hot water in the first stage hot water storage tank 2 passes through the first stage hot water storage tank hot water pipeline 3, the regulating valve one 10, the regulating valve two 13, and enters the absorption heat pump water supply pipeline 15.

[0024] When the temperature of the first stage hot water storage tank 2 is reduced and cannot meet the driving water temperature requirement of the absorption heat pump 4, the second stage hot water storage tank 5 supplies water to the absorption heat pump 4, at this time, the regulating valve one 10, the inlet valve 11, and the regulating valve two 13 are closed, and the outlet valve 14 is opened. The hot water in the second stage hot water storage tank 5 passes through the second stage hot water storage tank water outlet pipeline 9, the second stage hot water storage tank hot water pipeline 12, and the outlet valve 14, and enters the absorption heat pump water supply pipeline 15.

[0025] When the absorption heat pump 4 stops working, the regulating valve two 13 and the outlet valve 14 are closed, the regulating valve one 10 and the inlet valve 11 are opened, and the hot water in the first stage hot water storage tank 2 passes through the first stage hot water storage tank hot water pipeline 3, the regulating valve one 10, and the inlet valve 11 to inject water and store heat in the second stage hot water storage tank 5.

[0026] The above only describes the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hot water storage tank of a photo-thermal hot water absorption heat pump, comprising a solar water heater (1) and a first stage hot water storage tank (2) installed on the solar water heater (1), the first stage hot water storage tank (2) being connected to an absorption heat pump (4) through a first stage hot water storage tank hot water pipeline (3), characterized in that, The second level hot water storage tank (5) is connected with the absorption heat pump (4) through the second level hot water storage tank hot water pipeline (12) and the first level hot water storage tank hot water pipeline (3).

2. The hot water storage tank of a photo-thermal hot water absorption heat pump according to claim 1, characterized in that, One side of the second level hot water storage tank (5) is connected with the second level hot water storage tank water inlet pipeline (8), and the other side is connected with the second level hot water storage tank water outlet pipeline (9). An inlet valve (11) is installed on the second level hot water storage tank water inlet pipeline (8), and an outlet valve (14) is installed on the second level hot water storage tank water outlet pipeline (9).

3. A hot water storage tank for a photo-thermal water absorption heat pump according to claim 2, wherein The second level hot water storage tank (5) is internally provided with a water distributor (6) and a temperature gradient layer (7), wherein the water distributor (6) is arranged on the side of the temperature gradient layer (7) close to the second level hot water storage tank water inlet pipeline (8).

4. The hot water storage tank of a photo-thermal hot water absorption heat pump according to claim 1, characterized in that, One side of the absorption heat pump (4) is connected with the absorption heat pump water supply pipeline (15), and the absorption heat pump water supply pipeline (15) is connected with the second level hot water storage tank hot water pipeline (12) and the first level hot water storage tank hot water pipeline (3) respectively.

5. The hot water storage tank of a photo-thermal hot water absorption heat pump according to claim 2, characterized in that, The first level hot water storage tank hot water pipeline (3) is respectively provided with an adjusting valve one (10) and an adjusting valve two (13), wherein the adjusting valve one (10) is connected with the inlet valve (11) and the adjusting valve two (13) in series, and the inlet valve (11) and the adjusting valve two (13) are arranged in parallel.

6. The hot water storage tank of a photo-thermal hot water absorption heat pump according to claim 1, characterized in that, When the absorption heat pump (4) works, hot water is preferentially supplied by the first level hot water storage tank (2), and then hot water is supplied by the second level hot water storage tank (5).

7. The hot water storage tank of a photo-thermal hot water absorption heat pump according to claim 1, characterized in that, When the absorption heat pump (4) does not work, hot water is supplied from the first level hot water storage tank (2) to the second level hot water storage tank (5).

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